11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Extensible Firmware Interface 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 47d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * Based on Extensible Firmware Interface Specification version 0.9 57d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * April 30, 1999 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1999 VA Linux Systems 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1999-2003 Hewlett-Packard Co. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * David Mosberger-Tang <davidm@hpl.hp.com> 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Stephane Eranian <eranian@hpl.hp.com> 1232e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * (c) Copyright 2006 Hewlett-Packard Development Company, L.P. 1332e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * Bjorn Helgaas <bjorn.helgaas@hp.com> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * All EFI Runtime Services are not implemented yet as EFI only 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * supports physical mode addressing on SoftSDV. This is to be fixed 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * in a future version. --drummond 1999-07-20 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Implemented EFI runtime services and virtual mode calls. --davidm 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Goutham Rao: <goutham.rao@intel.com> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Skip non-WB memory and ignore empty memory ranges. 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 25f4a570997e71b892805a1e71303d09c327af135fHorms#include <linux/bootmem.h> 2693a72052be81823fa1584b9be037d51924f9efa4Olaf Hering#include <linux/crash_dump.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 305a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/time.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/efi.h> 33a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai#include <linux/kexec.h> 34ed7ed365172e27b0efe9d43cc962723c7193e34eMel Gorman#include <linux/mm.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/kregs.h> 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/meminit.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/pgtable.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/processor.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/mca.h> 42c140d87995b68b428f70635c2e4071e4e8b3256eDavid Howells#include <asm/setup.h> 432046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu#include <asm/tlbflush.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EFI_DEBUG 0 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern efi_status_t efi_call_phys (void *, ...); 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct efi efi; 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(efi); 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic efi_runtime_services_t *runtime; 52e088a4ad7fa53c3dc3c29f930025f41ccf01953eMatthew Wilcoxstatic u64 mem_limit = ~0UL, max_addr = ~0UL, min_addr = 0UL; 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define efi_call_virt(f, args...) (*(f))(args) 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 567d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis#define STUB_GET_TIME(prefix, adjust_arg) \ 577d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisstatic efi_status_t \ 587d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisprefix##_get_time (efi_time_t *tm, efi_time_cap_t *tc) \ 597d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis{ \ 607d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis struct ia64_fpreg fr[6]; \ 617d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_time_cap_t *atc = NULL; \ 627d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_status_t ret; \ 637d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 647d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (tc) \ 657d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis atc = adjust_arg(tc); \ 667d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_save_scratch_fpregs(fr); \ 677d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ret = efi_call_##prefix((efi_get_time_t *) __va(runtime->get_time), \ 687d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adjust_arg(tm), atc); \ 697d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_load_scratch_fpregs(fr); \ 707d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return ret; \ 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 737d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis#define STUB_SET_TIME(prefix, adjust_arg) \ 747d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisstatic efi_status_t \ 757d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisprefix##_set_time (efi_time_t *tm) \ 767d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis{ \ 777d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis struct ia64_fpreg fr[6]; \ 787d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_status_t ret; \ 797d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 807d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_save_scratch_fpregs(fr); \ 817d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ret = efi_call_##prefix((efi_set_time_t *) __va(runtime->set_time), \ 827d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adjust_arg(tm)); \ 837d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_load_scratch_fpregs(fr); \ 847d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return ret; \ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 877d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis#define STUB_GET_WAKEUP_TIME(prefix, adjust_arg) \ 887d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisstatic efi_status_t \ 897d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisprefix##_get_wakeup_time (efi_bool_t *enabled, efi_bool_t *pending, \ 907d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_time_t *tm) \ 917d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis{ \ 927d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis struct ia64_fpreg fr[6]; \ 937d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_status_t ret; \ 947d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 957d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_save_scratch_fpregs(fr); \ 967d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ret = efi_call_##prefix( \ 977d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (efi_get_wakeup_time_t *) __va(runtime->get_wakeup_time), \ 987d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adjust_arg(enabled), adjust_arg(pending), adjust_arg(tm)); \ 997d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_load_scratch_fpregs(fr); \ 1007d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return ret; \ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1037d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis#define STUB_SET_WAKEUP_TIME(prefix, adjust_arg) \ 1047d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisstatic efi_status_t \ 1057d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisprefix##_set_wakeup_time (efi_bool_t enabled, efi_time_t *tm) \ 1067d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis{ \ 1077d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis struct ia64_fpreg fr[6]; \ 1087d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_time_t *atm = NULL; \ 1097d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_status_t ret; \ 1107d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 1117d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (tm) \ 1127d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis atm = adjust_arg(tm); \ 1137d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_save_scratch_fpregs(fr); \ 1147d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ret = efi_call_##prefix( \ 1157d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (efi_set_wakeup_time_t *) __va(runtime->set_wakeup_time), \ 1167d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis enabled, atm); \ 1177d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_load_scratch_fpregs(fr); \ 1187d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return ret; \ 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1217d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis#define STUB_GET_VARIABLE(prefix, adjust_arg) \ 1227d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisstatic efi_status_t \ 1237d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisprefix##_get_variable (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, \ 1247d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis unsigned long *data_size, void *data) \ 1257d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis{ \ 1267d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis struct ia64_fpreg fr[6]; \ 1277d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis u32 *aattr = NULL; \ 1287d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_status_t ret; \ 1297d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 1307d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (attr) \ 1317d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis aattr = adjust_arg(attr); \ 1327d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_save_scratch_fpregs(fr); \ 1337d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ret = efi_call_##prefix( \ 1347d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (efi_get_variable_t *) __va(runtime->get_variable), \ 1357d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adjust_arg(name), adjust_arg(vendor), aattr, \ 1367d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adjust_arg(data_size), adjust_arg(data)); \ 1377d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_load_scratch_fpregs(fr); \ 1387d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return ret; \ 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1417d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis#define STUB_GET_NEXT_VARIABLE(prefix, adjust_arg) \ 1427d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisstatic efi_status_t \ 1437d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisprefix##_get_next_variable (unsigned long *name_size, efi_char16_t *name, \ 1447d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_guid_t *vendor) \ 1457d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis{ \ 1467d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis struct ia64_fpreg fr[6]; \ 1477d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_status_t ret; \ 1487d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 1497d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_save_scratch_fpregs(fr); \ 1507d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ret = efi_call_##prefix( \ 1517d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (efi_get_next_variable_t *) __va(runtime->get_next_variable), \ 1527d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adjust_arg(name_size), adjust_arg(name), adjust_arg(vendor)); \ 1537d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_load_scratch_fpregs(fr); \ 1547d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return ret; \ 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1577d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis#define STUB_SET_VARIABLE(prefix, adjust_arg) \ 1587d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisstatic efi_status_t \ 1597d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisprefix##_set_variable (efi_char16_t *name, efi_guid_t *vendor, \ 1601eb9a4b8a3c8a141cf2ab27309f089923b69c707Matthew Garrett u32 attr, unsigned long data_size, \ 1617d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis void *data) \ 1627d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis{ \ 1637d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis struct ia64_fpreg fr[6]; \ 1647d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_status_t ret; \ 1657d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 1667d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_save_scratch_fpregs(fr); \ 1677d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ret = efi_call_##prefix( \ 1687d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (efi_set_variable_t *) __va(runtime->set_variable), \ 1697d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adjust_arg(name), adjust_arg(vendor), attr, data_size, \ 1707d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adjust_arg(data)); \ 1717d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_load_scratch_fpregs(fr); \ 1727d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return ret; \ 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1757d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis#define STUB_GET_NEXT_HIGH_MONO_COUNT(prefix, adjust_arg) \ 1767d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisstatic efi_status_t \ 1777d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisprefix##_get_next_high_mono_count (u32 *count) \ 1787d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis{ \ 1797d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis struct ia64_fpreg fr[6]; \ 1807d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_status_t ret; \ 1817d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 1827d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_save_scratch_fpregs(fr); \ 1837d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ret = efi_call_##prefix((efi_get_next_high_mono_count_t *) \ 1847d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis __va(runtime->get_next_high_mono_count), \ 1857d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adjust_arg(count)); \ 1867d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_load_scratch_fpregs(fr); \ 1877d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return ret; \ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1907d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis#define STUB_RESET_SYSTEM(prefix, adjust_arg) \ 1917d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisstatic void \ 1927d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffisprefix##_reset_system (int reset_type, efi_status_t status, \ 1937d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis unsigned long data_size, efi_char16_t *data) \ 1947d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis{ \ 1957d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis struct ia64_fpreg fr[6]; \ 1967d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_char16_t *adata = NULL; \ 1977d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 1987d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (data) \ 1997d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis adata = adjust_arg(data); \ 2007d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis \ 2017d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_save_scratch_fpregs(fr); \ 2027d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_call_##prefix( \ 2037d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (efi_reset_system_t *) __va(runtime->reset_system), \ 2047d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis reset_type, status, data_size, adata); \ 2057d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis /* should not return, but just in case... */ \ 2067d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_load_scratch_fpregs(fr); \ 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define phys_ptr(arg) ((__typeof__(arg)) ia64_tpa(arg)) 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_TIME(phys, phys_ptr) 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_SET_TIME(phys, phys_ptr) 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_WAKEUP_TIME(phys, phys_ptr) 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_SET_WAKEUP_TIME(phys, phys_ptr) 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_VARIABLE(phys, phys_ptr) 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_NEXT_VARIABLE(phys, phys_ptr) 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_SET_VARIABLE(phys, phys_ptr) 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_NEXT_HIGH_MONO_COUNT(phys, phys_ptr) 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_RESET_SYSTEM(phys, phys_ptr) 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define id(arg) arg 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_TIME(virt, id) 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_SET_TIME(virt, id) 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_WAKEUP_TIME(virt, id) 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_SET_WAKEUP_TIME(virt, id) 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_VARIABLE(virt, id) 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_NEXT_VARIABLE(virt, id) 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_SET_VARIABLE(virt, id) 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_GET_NEXT_HIGH_MONO_COUNT(virt, id) 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsSTUB_RESET_SYSTEM(virt, id) 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsefi_gettimeofday (struct timespec *ts) 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_time_t tm; 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2384b07ae9b9d7b05a63e3ece32a666041949b7f421Li Zefan if ((*efi.get_time)(&tm, NULL) != EFI_SUCCESS) { 2394b07ae9b9d7b05a63e3ece32a666041949b7f421Li Zefan memset(ts, 0, sizeof(*ts)); 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 2414b07ae9b9d7b05a63e3ece32a666041949b7f421Li Zefan } 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2437d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ts->tv_sec = mktime(tm.year, tm.month, tm.day, 2447d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis tm.hour, tm.minute, tm.second); 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ts->tv_nsec = tm.nanosecond; 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 24966888a6e5ffc756b9a4115fc766ee2258eefb928Christoph Lameteris_memory_available (efi_memory_desc_t *md) 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(md->attribute & EFI_MEMORY_WB)) 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (md->type) { 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case EFI_LOADER_CODE: 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case EFI_LOADER_DATA: 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case EFI_BOOT_SERVICES_CODE: 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case EFI_BOOT_SERVICES_DATA: 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case EFI_CONVENTIONAL_MEMORY: 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 265d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Lucktypedef struct kern_memdesc { 266d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 attribute; 267d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 start; 268d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 num_pages; 269d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck} kern_memdesc_t; 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 271d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luckstatic kern_memdesc_t *kern_memmap; 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 27380851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas#define efi_md_size(md) (md->num_pages << EFI_PAGE_SHIFT) 27480851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 27580851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasstatic inline u64 27680851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaaskmd_end(kern_memdesc_t *kmd) 27780851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas{ 27880851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return (kmd->start + (kmd->num_pages << EFI_PAGE_SHIFT)); 27980851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas} 28080851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 28180851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasstatic inline u64 28280851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasefi_md_end(efi_memory_desc_t *md) 28380851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas{ 28480851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return (md->phys_addr + efi_md_size(md)); 28580851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas} 28680851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 28780851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasstatic inline int 28880851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasefi_wb(efi_memory_desc_t *md) 28980851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas{ 29080851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return (md->attribute & EFI_MEMORY_WB); 29180851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas} 29280851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 29380851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasstatic inline int 29480851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasefi_uc(efi_memory_desc_t *md) 29580851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas{ 29680851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return (md->attribute & EFI_MEMORY_UC); 29780851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas} 29880851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 300d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luckwalk (efi_freemem_callback_t callback, void *arg, u64 attr) 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 302d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck kern_memdesc_t *k; 303d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 start, end, voff; 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 305d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck voff = (attr == EFI_MEMORY_WB) ? PAGE_OFFSET : __IA64_UNCACHED_OFFSET; 306d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck for (k = kern_memmap; k->start != ~0UL; k++) { 307d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (k->attribute != attr) 308d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 309d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck start = PAGE_ALIGN(k->start); 310d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck end = (k->start + (k->num_pages << EFI_PAGE_SHIFT)) & PAGE_MASK; 311d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (start < end) 312d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if ((*callback)(start + voff, end + voff, arg) < 0) 313d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck return; 314d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 318965e7c8affeca27f7e5de75c97954e74d3b8052dAron Griffis * Walk the EFI memory map and call CALLBACK once for each EFI memory 3197d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * descriptor that has memory that is available for OS use. 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsefi_memmap_walk (efi_freemem_callback_t callback, void *arg) 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 324d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck walk(callback, arg, EFI_MEMORY_WB); 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 328965e7c8affeca27f7e5de75c97954e74d3b8052dAron Griffis * Walk the EFI memory map and call CALLBACK once for each EFI memory 3297d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * descriptor that has memory that is available for uncached allocator. 330f14f75b81187cdbe10cc53a521bf9fdf97b59f8cJes Sorensen */ 331d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luckvoid 332d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luckefi_memmap_walk_uc (efi_freemem_callback_t callback, void *arg) 333f14f75b81187cdbe10cc53a521bf9fdf97b59f8cJes Sorensen{ 334d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck walk(callback, arg, EFI_MEMORY_UC); 335f14f75b81187cdbe10cc53a521bf9fdf97b59f8cJes Sorensen} 336f14f75b81187cdbe10cc53a521bf9fdf97b59f8cJes Sorensen 337f14f75b81187cdbe10cc53a521bf9fdf97b59f8cJes Sorensen/* 338965e7c8affeca27f7e5de75c97954e74d3b8052dAron Griffis * Look for the PAL_CODE region reported by EFI and map it using an 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ITR to enable safe PAL calls in virtual mode. See IA-64 Processor 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Abstraction Layer chapter 11 in ADAG 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid * 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsefi_get_pal_addr (void) 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *efi_map_start, *efi_map_end, *p; 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_memory_desc_t *md; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u64 efi_desc_size; 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int pal_code_count = 0; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u64 vaddr, mask; 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_start = __va(ia64_boot_param->efi_memmap); 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_desc_size = ia64_boot_param->efi_memdesc_size; 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) { 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds md = p; 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (md->type != EFI_PAL_CODE) 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (++pal_code_count > 1) { 3617d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis printk(KERN_ERR "Too many EFI Pal Code memory ranges, " 362e088a4ad7fa53c3dc3c29f930025f41ccf01953eMatthew Wilcox "dropped @ %llx\n", md->phys_addr); 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3667d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * The only ITLB entry in region 7 that is used is the one 3677d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * installed by __start(). That entry covers a 64MB range. 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = ~((1 << KERNEL_TR_PAGE_SHIFT) - 1); 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vaddr = PAGE_OFFSET + md->phys_addr; 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3737d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * We must check that the PAL mapping won't overlap with the 3747d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * kernel mapping. 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3767d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * PAL code is guaranteed to be aligned on a power of 2 between 3777d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * 4k and 256KB and that only one ITR is needed to map it. This 3787d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * implies that the PAL code is always aligned on its size, 3797d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * i.e., the closest matching page size supported by the TLB. 3807d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * Therefore PAL code is guaranteed never to cross a 64MB unless 3817d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * it is bigger than 64MB (very unlikely!). So for now the 3827d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * following test is enough to determine whether or not we need 3837d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * a dedicated ITR for the PAL code. 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((vaddr & mask) == (KERNEL_START & mask)) { 386d4ed80841ad4a1d59decccfbe2d010558568c5fbHarvey Harrison printk(KERN_INFO "%s: no need to install ITR for PAL code\n", 387d4ed80841ad4a1d59decccfbe2d010558568c5fbHarvey Harrison __func__); 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 391685c7f5d3629d558b17ee193b6d7f194e82aadf0Li Zefan if (efi_md_size(md) > IA64_GRANULE_SIZE) 392965e7c8affeca27f7e5de75c97954e74d3b8052dAron Griffis panic("Whoa! PAL code size bigger than a granule!"); 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if EFI_DEBUG 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mask = ~((1 << IA64_GRANULE_SHIFT) - 1); 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3977d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis printk(KERN_INFO "CPU %d: mapping PAL code " 3987d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis "[0x%lx-0x%lx) into [0x%lx-0x%lx)\n", 3997d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis smp_processor_id(), md->phys_addr, 4007d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis md->phys_addr + efi_md_size(md), 4017d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis vaddr & mask, (vaddr & mask) + IA64_GRANULE_SIZE); 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return __va(md->phys_addr); 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4059473252f20e8482464415d9030b3957b5593796dHorms printk(KERN_WARNING "%s: no PAL-code memory-descriptor found\n", 406d4ed80841ad4a1d59decccfbe2d010558568c5fbHarvey Harrison __func__); 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4102046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 4112046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yustatic u8 __init palo_checksum(u8 *buffer, u32 length) 4122046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu{ 4132046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu u8 sum = 0; 4142046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu u8 *end = buffer + length; 4152046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 4162046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu while (buffer < end) 4172046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu sum = (u8) (sum + *(buffer++)); 4182046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 4192046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu return sum; 4202046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu} 4212046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 4222046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu/* 4232046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu * Parse and handle PALO table which is published at: 4242046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu * http://www.dig64.org/home/DIG64_PALO_R1_0.pdf 4252046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu */ 4262046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yustatic void __init handle_palo(unsigned long palo_phys) 4272046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu{ 4282046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu struct palo_table *palo = __va(palo_phys); 4292046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu u8 checksum; 4302046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 4312046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu if (strncmp(palo->signature, PALO_SIG, sizeof(PALO_SIG) - 1)) { 4322046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu printk(KERN_INFO "PALO signature incorrect.\n"); 4332046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu return; 4342046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu } 4352046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 4362046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu checksum = palo_checksum((u8 *)palo, palo->length); 4372046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu if (checksum) { 4382046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu printk(KERN_INFO "PALO checksum incorrect.\n"); 4392046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu return; 4402046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu } 4412046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 442a6c75b86ce9f01db4ea9912877b526c2dc4d2f0aFenghua Yu setup_ptcg_sem(palo->max_tlb_purges, NPTCG_FROM_PALO); 4432046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu} 4442046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsefi_map_pal_code (void) 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *pal_vaddr = efi_get_pal_addr (); 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u64 psr; 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!pal_vaddr) 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Cannot write to CRx with PSR.ic=1 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds psr = ia64_clear_ic(); 4587d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_itr(0x1, IA64_TR_PALCODE, 4597d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis GRANULEROUNDDOWN((unsigned long) pal_vaddr), 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pte_val(pfn_pte(__pa(pal_vaddr) >> PAGE_SHIFT, PAGE_KERNEL)), 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IA64_GRANULE_SHIFT); 462dae17da60d1797c9049d21d06de0db1873eee153Isaku Yamahata paravirt_dv_serialize_data(); 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ia64_set_psr(psr); /* restore psr */ 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid __init 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsefi_init (void) 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *efi_map_start, *efi_map_end; 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_config_table_t *config_tables; 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_char16_t *c16; 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u64 efi_desc_size; 4739d78f43d1fd3e028bfd37510ce847d0896f71f78Zou Nan hai char *cp, vendor[100] = "unknown"; 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4752046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu unsigned long palo_phys; 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4777d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis /* 478965e7c8affeca27f7e5de75c97954e74d3b8052dAron Griffis * It's too early to be able to use the standard kernel command line 4797d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * support... 4807d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis */ 481a8d91b8477aa433ee0131b031d782411976e1726Alon Bar-Lev for (cp = boot_command_line; *cp; ) { 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (memcmp(cp, "mem=", 4) == 0) { 4839d78f43d1fd3e028bfd37510ce847d0896f71f78Zou Nan hai mem_limit = memparse(cp + 4, &cp); 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (memcmp(cp, "max_addr=", 9) == 0) { 4859d78f43d1fd3e028bfd37510ce847d0896f71f78Zou Nan hai max_addr = GRANULEROUNDDOWN(memparse(cp + 9, &cp)); 486a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai } else if (memcmp(cp, "min_addr=", 9) == 0) { 487a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai min_addr = GRANULEROUNDDOWN(memparse(cp + 9, &cp)); 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (*cp != ' ' && *cp) 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++cp; 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (*cp == ' ') 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ++cp; 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 495a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai if (min_addr != 0UL) 496e088a4ad7fa53c3dc3c29f930025f41ccf01953eMatthew Wilcox printk(KERN_INFO "Ignoring memory below %lluMB\n", 4977d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis min_addr >> 20); 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (max_addr != ~0UL) 499e088a4ad7fa53c3dc3c29f930025f41ccf01953eMatthew Wilcox printk(KERN_INFO "Ignoring memory above %lluMB\n", 5007d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis max_addr >> 20); 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.systab = __va(ia64_boot_param->efi_systab); 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Verify the EFI Table 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (efi.systab == NULL) 508965e7c8affeca27f7e5de75c97954e74d3b8052dAron Griffis panic("Whoa! Can't find EFI system table.\n"); 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (efi.systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) 510965e7c8affeca27f7e5de75c97954e74d3b8052dAron Griffis panic("Whoa! EFI system table signature incorrect\n"); 511873ec746158403af82c57ce26780166aafc159e1Bjorn Helgaas if ((efi.systab->hdr.revision >> 16) == 0) 512873ec746158403af82c57ce26780166aafc159e1Bjorn Helgaas printk(KERN_WARNING "Warning: EFI system table version " 513873ec746158403af82c57ce26780166aafc159e1Bjorn Helgaas "%d.%02d, expected 1.00 or greater\n", 514873ec746158403af82c57ce26780166aafc159e1Bjorn Helgaas efi.systab->hdr.revision >> 16, 515873ec746158403af82c57ce26780166aafc159e1Bjorn Helgaas efi.systab->hdr.revision & 0xffff); 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds config_tables = __va(efi.systab->tables); 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Show what we know for posterity */ 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds c16 = __va(efi.systab->fw_vendor); 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c16) { 522ecdd5dabd33d67066d476467e447cdcadab90550Zou Nan hai for (i = 0;i < (int) sizeof(vendor) - 1 && *c16; ++i) 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vendor[i] = *c16++; 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds vendor[i] = '\0'; 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "EFI v%u.%.02u by %s:", 5287d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi.systab->hdr.revision >> 16, 5297d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi.systab->hdr.revision & 0xffff, vendor); 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 531b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.mps = EFI_INVALID_TABLE_ADDR; 532b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.acpi = EFI_INVALID_TABLE_ADDR; 533b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.acpi20 = EFI_INVALID_TABLE_ADDR; 534b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.smbios = EFI_INVALID_TABLE_ADDR; 535b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.sal_systab = EFI_INVALID_TABLE_ADDR; 536b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.boot_info = EFI_INVALID_TABLE_ADDR; 537b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.hcdp = EFI_INVALID_TABLE_ADDR; 538b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.uga = EFI_INVALID_TABLE_ADDR; 539b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas 5402046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu palo_phys = EFI_INVALID_TABLE_ADDR; 5412046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < (int) efi.systab->nr_tables; i++) { 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (efi_guidcmp(config_tables[i].guid, MPS_TABLE_GUID) == 0) { 544b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.mps = config_tables[i].table; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" MPS=0x%lx", config_tables[i].table); 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (efi_guidcmp(config_tables[i].guid, ACPI_20_TABLE_GUID) == 0) { 547b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.acpi20 = config_tables[i].table; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" ACPI 2.0=0x%lx", config_tables[i].table); 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (efi_guidcmp(config_tables[i].guid, ACPI_TABLE_GUID) == 0) { 550b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.acpi = config_tables[i].table; 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" ACPI=0x%lx", config_tables[i].table); 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (efi_guidcmp(config_tables[i].guid, SMBIOS_TABLE_GUID) == 0) { 553b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.smbios = config_tables[i].table; 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" SMBIOS=0x%lx", config_tables[i].table); 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) == 0) { 556b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.sal_systab = config_tables[i].table; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" SALsystab=0x%lx", config_tables[i].table); 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) { 559b2c99e3c70d77fb194df5aa1642030080d28ea48Bjorn Helgaas efi.hcdp = config_tables[i].table; 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(" HCDP=0x%lx", config_tables[i].table); 5612046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu } else if (efi_guidcmp(config_tables[i].guid, 5622046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu PROCESSOR_ABSTRACTION_LAYER_OVERWRITE_GUID) == 0) { 5632046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu palo_phys = config_tables[i].table; 5642046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu printk(" PALO=0x%lx", config_tables[i].table); 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("\n"); 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5692046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu if (palo_phys != EFI_INVALID_TABLE_ADDR) 5702046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu handle_palo(palo_phys); 5712046b94e7c4fce92eb8165c2c36c6478f4927178Fenghua Yu 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds runtime = __va(efi.systab->runtime); 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_time = phys_get_time; 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.set_time = phys_set_time; 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_wakeup_time = phys_get_wakeup_time; 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.set_wakeup_time = phys_set_wakeup_time; 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_variable = phys_get_variable; 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_next_variable = phys_get_next_variable; 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.set_variable = phys_set_variable; 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_next_high_mono_count = phys_get_next_high_mono_count; 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.reset_system = phys_reset_system; 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_start = __va(ia64_boot_param->efi_memmap); 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_desc_size = ia64_boot_param->efi_memdesc_size; 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if EFI_DEBUG 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* print EFI memory map: */ 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_memory_desc_t *md; 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *p; 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5937d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis for (i = 0, p = efi_map_start; p < efi_map_end; 5947d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ++i, p += efi_desc_size) 5957d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis { 596818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman const char *unit; 597818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman unsigned long size; 598818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds md = p; 600818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman size = md->num_pages << EFI_PAGE_SHIFT; 601818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman 602818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman if ((size >> 40) > 0) { 603818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman size >>= 40; 604818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman unit = "TB"; 605818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman } else if ((size >> 30) > 0) { 606818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman size >>= 30; 607818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman unit = "GB"; 608818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman } else if ((size >> 20) > 0) { 609818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman size >>= 20; 610818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman unit = "MB"; 611818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman } else { 612818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman size >>= 10; 613818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman unit = "KB"; 614818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman } 615818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman 616818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman printk("mem%02d: type=%2u, attr=0x%016lx, " 617818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman "range=[0x%016lx-0x%016lx) (%4lu%s)\n", 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i, md->type, md->attribute, md->phys_addr, 619818c7e866f920b145424c2c46deda4b27c3fb316Simon Horman md->phys_addr + efi_md_size(md), size, unit); 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_pal_code(); 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_enter_virtual_mode(); 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsefi_enter_virtual_mode (void) 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *efi_map_start, *efi_map_end, *p; 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_memory_desc_t *md; 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_status_t status; 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u64 efi_desc_size; 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_start = __va(ia64_boot_param->efi_memmap); 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_desc_size = ia64_boot_param->efi_memdesc_size; 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) { 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds md = p; 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (md->attribute & EFI_MEMORY_RUNTIME) { 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6447d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * Some descriptors have multiple bits set, so the 6457d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * order of the tests is relevant. 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (md->attribute & EFI_MEMORY_WB) { 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds md->virt_addr = (u64) __va(md->phys_addr); 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (md->attribute & EFI_MEMORY_UC) { 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds md->virt_addr = (u64) ioremap(md->phys_addr, 0); 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (md->attribute & EFI_MEMORY_WC) { 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 6537d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis md->virt_addr = ia64_remap(md->phys_addr, 6547d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (_PAGE_A | 6557d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_P | 6567d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_D | 6577d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_MA_WC | 6587d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_PL_0 | 6597d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_AR_RW)); 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "EFI_MEMORY_WC mapping\n"); 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds md->virt_addr = (u64) ioremap(md->phys_addr, 0); 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (md->attribute & EFI_MEMORY_WT) { 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 0 6667d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis md->virt_addr = ia64_remap(md->phys_addr, 6677d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (_PAGE_A | 6687d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_P | 6697d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_D | 6707d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_MA_WT | 6717d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_PL_0 | 6727d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis _PAGE_AR_RW)); 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "EFI_MEMORY_WT mapping\n"); 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds md->virt_addr = (u64) ioremap(md->phys_addr, 0); 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = efi_call_phys(__va(runtime->set_virtual_address_map), 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ia64_boot_param->efi_memmap_size, 6837d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_desc_size, 6847d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis ia64_boot_param->efi_memdesc_version, 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ia64_boot_param->efi_memmap); 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status != EFI_SUCCESS) { 6877d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis printk(KERN_WARNING "warning: unable to switch EFI into " 6887d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis "virtual mode (status=%lu)\n", status); 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6937d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * Now that EFI is in virtual mode, we call the EFI functions more 6947d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * efficiently: 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_time = virt_get_time; 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.set_time = virt_set_time; 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_wakeup_time = virt_get_wakeup_time; 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.set_wakeup_time = virt_set_wakeup_time; 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_variable = virt_get_variable; 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_next_variable = virt_get_next_variable; 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.set_variable = virt_set_variable; 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.get_next_high_mono_count = virt_get_next_high_mono_count; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi.reset_system = virt_reset_system; 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 7087d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * Walk the EFI memory map looking for the I/O port range. There can only be 7097d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis * one entry of this type, other I/O port ranges should be described via ACPI. 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsu64 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsefi_get_iobase (void) 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *efi_map_start, *efi_map_end, *p; 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_memory_desc_t *md; 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u64 efi_desc_size; 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_start = __va(ia64_boot_param->efi_memmap); 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_desc_size = ia64_boot_param->efi_memdesc_size; 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) { 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds md = p; 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (md->type == EFI_MEMORY_MAPPED_IO_PORT_SPACE) { 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (md->attribute & EFI_MEMORY_UC) 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return md->phys_addr; 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 73232e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaasstatic struct kern_memdesc * 73332e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaaskern_memory_descriptor (unsigned long phys_addr) 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 73532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas struct kern_memdesc *md; 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 73732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas for (md = kern_memmap; md->start != ~0UL; md++) { 73832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (phys_addr - md->start < (md->num_pages << EFI_PAGE_SHIFT)) 73980851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return md; 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 741e037cda559547e6353c5a792802963572d0b750eKeith Owens return NULL; 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 74432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaasstatic efi_memory_desc_t * 74532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaasefi_memory_descriptor (unsigned long phys_addr) 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *efi_map_start, *efi_map_end, *p; 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_memory_desc_t *md; 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u64 efi_desc_size; 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_start = __va(ia64_boot_param->efi_memmap); 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_desc_size = ia64_boot_param->efi_memdesc_size; 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) { 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds md = p; 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 758685c7f5d3629d558b17ee193b6d7f194e82aadf0Li Zefan if (phys_addr - md->phys_addr < efi_md_size(md)) 75932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return md; 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 761e037cda559547e6353c5a792802963572d0b750eKeith Owens return NULL; 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 76380851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 7646d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaasstatic int 7656d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaasefi_memmap_intersects (unsigned long phys_addr, unsigned long size) 7666d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas{ 7676d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas void *efi_map_start, *efi_map_end, *p; 7686d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas efi_memory_desc_t *md; 7696d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas u64 efi_desc_size; 7706d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas unsigned long end; 7716d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas 7726d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas efi_map_start = __va(ia64_boot_param->efi_memmap); 7736d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 7746d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas efi_desc_size = ia64_boot_param->efi_memdesc_size; 7756d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas 7766d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas end = phys_addr + size; 7776d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas 7786d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) { 7796d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas md = p; 7806d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas if (md->phys_addr < end && efi_md_end(md) > phys_addr) 7816d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas return 1; 7826d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas } 7836d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas return 0; 7846d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas} 7856d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas 78680851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasu32 78780851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasefi_mem_type (unsigned long phys_addr) 78880851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas{ 78980851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas efi_memory_desc_t *md = efi_memory_descriptor(phys_addr); 79080851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 79180851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas if (md) 79280851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return md->type; 79380851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return 0; 79480851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas} 79580851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 79680851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasu64 79780851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasefi_mem_attributes (unsigned long phys_addr) 79880851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas{ 79980851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas efi_memory_desc_t *md = efi_memory_descriptor(phys_addr); 80080851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 80180851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas if (md) 80280851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return md->attribute; 80380851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return 0; 80480851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas} 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsEXPORT_SYMBOL(efi_mem_attributes); 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 80732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaasu64 80832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaasefi_mem_attribute (unsigned long phys_addr, unsigned long size) 80980851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas{ 810136939a2b5aa4302281215745ccd567e1df2e8d4Bjorn Helgaas unsigned long end = phys_addr + size; 81180851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas efi_memory_desc_t *md = efi_memory_descriptor(phys_addr); 81232e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas u64 attr; 81332e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas 81432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (!md) 81532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return 0; 81632e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas 81732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas /* 81832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * EFI_MEMORY_RUNTIME is not a memory attribute; it just tells 81932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * the kernel that firmware needs this region mapped. 82032e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas */ 82132e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas attr = md->attribute & ~EFI_MEMORY_RUNTIME; 82232e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas do { 82332e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas unsigned long md_end = efi_md_end(md); 82432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas 82532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (end <= md_end) 82632e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return attr; 82732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas 82832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas md = efi_memory_descriptor(md_end); 82932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (!md || (md->attribute & ~EFI_MEMORY_RUNTIME) != attr) 83032e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return 0; 83132e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas } while (md); 832410ab512e5c5716287a399145df0905c1dcddb04Aron Griffis return 0; /* never reached */ 83332e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas} 83432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas 83532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaasu64 83632e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaaskern_mem_attribute (unsigned long phys_addr, unsigned long size) 83732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas{ 83832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas unsigned long end = phys_addr + size; 83932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas struct kern_memdesc *md; 84032e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas u64 attr; 84180851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 842136939a2b5aa4302281215745ccd567e1df2e8d4Bjorn Helgaas /* 84332e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * This is a hack for ioremap calls before we set up kern_memmap. 84432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * Maybe we should do efi_memmap_init() earlier instead. 845136939a2b5aa4302281215745ccd567e1df2e8d4Bjorn Helgaas */ 84632e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (!kern_memmap) { 84732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas attr = efi_mem_attribute(phys_addr, size); 84832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (attr & EFI_MEMORY_WB) 84932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return EFI_MEMORY_WB; 85080851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas return 0; 851136939a2b5aa4302281215745ccd567e1df2e8d4Bjorn Helgaas } 85280851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 85332e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas md = kern_memory_descriptor(phys_addr); 85432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (!md) 85532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return 0; 85632e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas 85732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas attr = md->attribute; 85880851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas do { 85932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas unsigned long md_end = kmd_end(md); 860136939a2b5aa4302281215745ccd567e1df2e8d4Bjorn Helgaas 861136939a2b5aa4302281215745ccd567e1df2e8d4Bjorn Helgaas if (end <= md_end) 86232e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return attr; 86380851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 86432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas md = kern_memory_descriptor(md_end); 86532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (!md || md->attribute != attr) 866136939a2b5aa4302281215745ccd567e1df2e8d4Bjorn Helgaas return 0; 86780851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas } while (md); 868410ab512e5c5716287a399145df0905c1dcddb04Aron Griffis return 0; /* never reached */ 86980851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas} 87032e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn HelgaasEXPORT_SYMBOL(kern_mem_attribute); 87180851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint 873136939a2b5aa4302281215745ccd567e1df2e8d4Bjorn Helgaasvalid_phys_addr_range (unsigned long phys_addr, unsigned long size) 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 87532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas u64 attr; 87632e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas 87732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas /* 87832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * /dev/mem reads and writes use copy_to_user(), which implicitly 87932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * uses a granule-sized kernel identity mapping. It's really 88032e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * only safe to do this for regions in kern_memmap. For more 88132e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * details, see Documentation/ia64/aliasing.txt. 88232e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas */ 88332e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas attr = kern_mem_attribute(phys_addr, size); 88432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (attr & EFI_MEMORY_WB || attr & EFI_MEMORY_UC) 88532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return 1; 88632e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return 0; 88780851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas} 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 88980851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaasint 89006c67befeeb16f2995c11b0e04a348103ddbfab1Lennert Buytenhekvalid_mmap_phys_addr_range (unsigned long pfn, unsigned long size) 89180851ef2a5a404e6054211ca96ecd5ac4b06d297Bjorn Helgaas{ 8926d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas unsigned long phys_addr = pfn << PAGE_SHIFT; 8936d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas u64 attr; 8946d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas 8956d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas attr = efi_mem_attribute(phys_addr, size); 8966d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas 89732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas /* 8986d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas * /dev/mem mmap uses normal user pages, so we don't need the entire 8996d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas * granule, but the entire region we're mapping must support the same 9006d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas * attribute. 90132e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas */ 9026d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas if (attr & EFI_MEMORY_WB || attr & EFI_MEMORY_UC) 9036d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas return 1; 9046d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas 9056d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas /* 9066d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas * Intel firmware doesn't tell us about all the MMIO regions, so 9076d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas * in general we have to allow mmap requests. But if EFI *does* 9086d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas * tell us about anything inside this region, we should deny it. 9096d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas * The user can always map a smaller region to avoid the overlap. 9106d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas */ 9116d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas if (efi_memmap_intersects(phys_addr, size)) 9126d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas return 0; 9136d40fc514c9ea886dc18ddd20043a411816b63d1Bjorn Helgaas 91432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return 1; 91532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas} 9161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 91732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaaspgprot_t 91832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaasphys_mem_access_prot(struct file *file, unsigned long pfn, unsigned long size, 91932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas pgprot_t vma_prot) 92032e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas{ 92132e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas unsigned long phys_addr = pfn << PAGE_SHIFT; 92232e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas u64 attr; 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 92432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas /* 92532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * For /dev/mem mmap, we use user mappings, but if the region is 92632e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * in kern_memmap (and hence may be covered by a kernel mapping), 92732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * we must use the same attribute as the kernel mapping. 92832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas */ 92932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas attr = kern_mem_attribute(phys_addr, size); 93032e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (attr & EFI_MEMORY_WB) 93132e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return pgprot_cacheable(vma_prot); 93232e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas else if (attr & EFI_MEMORY_UC) 93332e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return pgprot_noncached(vma_prot); 93432e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas 93532e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas /* 93632e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * Some chipsets don't support UC access to memory. If 93732e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas * WB is supported, we prefer that. 93832e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas */ 93932e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas if (efi_mem_attribute(phys_addr, size) & EFI_MEMORY_WB) 94032e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return pgprot_cacheable(vma_prot); 94132e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas 94232e62c636a728cb39c0b3bd191286f2ca65d4028Bjorn Helgaas return pgprot_noncached(vma_prot); 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint __init 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsefi_uart_console_only(void) 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_status_t status; 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *s, name[] = "ConOut"; 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_guid_t guid = EFI_GLOBAL_VARIABLE_GUID; 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds efi_char16_t *utf16, name_utf16[32]; 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char data[1024]; 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long size = sizeof(data); 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct efi_generic_dev_path *hdr, *end_addr; 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int uart = 0; 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Convert to UTF-16 */ 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds utf16 = name_utf16; 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s = name; 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (*s) 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *utf16++ = *s++ & 0x7f; 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *utf16 = 0; 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = efi.get_variable(name_utf16, &guid, NULL, &size, data); 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status != EFI_SUCCESS) { 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "No EFI %s variable?\n", name); 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdr = (struct efi_generic_dev_path *) data; 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds end_addr = (struct efi_generic_dev_path *) ((u8 *) data + size); 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (hdr < end_addr) { 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (hdr->type == EFI_DEV_MSG && 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdr->sub_type == EFI_DEV_MSG_UART) 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uart = 1; 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (hdr->type == EFI_DEV_END_PATH || 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds hdr->type == EFI_DEV_END_PATH2) { 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!uart) 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (hdr->sub_type == EFI_DEV_END_ENTIRE) 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uart = 0; 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9847d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis hdr = (struct efi_generic_dev_path *)((u8 *) hdr + hdr->length); 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_ERR "Malformed %s value\n", name); 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 989d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 990d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck/* 991d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * Look for the first granule aligned memory descriptor memory 992d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * that is big enough to hold EFI memory map. Make sure this 993d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * descriptor is atleast granule sized so it does not get trimmed 994d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck */ 995d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luckstruct kern_memdesc * 996d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luckfind_memmap_space (void) 997d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck{ 998d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 contig_low=0, contig_high=0; 999d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 as = 0, ae; 1000d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck void *efi_map_start, *efi_map_end, *p, *q; 1001d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck efi_memory_desc_t *md, *pmd = NULL, *check_md; 1002d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 space_needed, efi_desc_size; 1003d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck unsigned long total_mem = 0; 1004d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1005d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck efi_map_start = __va(ia64_boot_param->efi_memmap); 1006d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 1007d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck efi_desc_size = ia64_boot_param->efi_memdesc_size; 1008d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1009d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck /* 1010d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * Worst case: we need 3 kernel descriptors for each efi descriptor 1011d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * (if every entry has a WB part in the middle, and UC head and tail), 1012d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * plus one for the end marker. 1013d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck */ 1014d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck space_needed = sizeof(kern_memdesc_t) * 1015d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck (3 * (ia64_boot_param->efi_memmap_size/efi_desc_size) + 1); 1016d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1017d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck for (p = efi_map_start; p < efi_map_end; pmd = md, p += efi_desc_size) { 1018d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck md = p; 1019d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (!efi_wb(md)) { 1020d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 1021d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 10227d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (pmd == NULL || !efi_wb(pmd) || 10237d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_md_end(pmd) != md->phys_addr) { 1024d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck contig_low = GRANULEROUNDUP(md->phys_addr); 1025d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck contig_high = efi_md_end(md); 10267d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis for (q = p + efi_desc_size; q < efi_map_end; 10277d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis q += efi_desc_size) { 1028d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck check_md = q; 1029d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (!efi_wb(check_md)) 1030d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck break; 1031d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (contig_high != check_md->phys_addr) 1032d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck break; 1033d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck contig_high = efi_md_end(check_md); 1034d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1035d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck contig_high = GRANULEROUNDDOWN(contig_high); 1036d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 103766888a6e5ffc756b9a4115fc766ee2258eefb928Christoph Lameter if (!is_memory_available(md) || md->type == EFI_LOADER_DATA) 1038d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 1039d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1040d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck /* Round ends inward to granule boundaries */ 1041d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck as = max(contig_low, md->phys_addr); 1042d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck ae = min(contig_high, efi_md_end(md)); 1043d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1044a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai /* keep within max_addr= and min_addr= command line arg */ 1045a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai as = max(as, min_addr); 1046d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck ae = min(ae, max_addr); 1047d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (ae <= as) 1048d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 1049d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1050d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck /* avoid going over mem= command line arg */ 1051d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (total_mem + (ae - as) > mem_limit) 1052d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck ae -= total_mem + (ae - as) - mem_limit; 1053d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1054d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (ae <= as) 1055d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 1056d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1057d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (ae - as > space_needed) 1058d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck break; 1059d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1060d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (p >= efi_map_end) 1061d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck panic("Can't allocate space for kernel memory descriptors"); 1062d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1063d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck return __va(as); 1064d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck} 1065d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1066d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck/* 1067d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * Walk the EFI memory map and gather all memory available for kernel 1068d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * to use. We can allocate partial granules only if the unavailable 1069d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * parts exist, and are WB. 1070d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck */ 1071cb3808532eeb1719667356157fac9222ccb2c4ffBernhard Walleunsigned long 1072e088a4ad7fa53c3dc3c29f930025f41ccf01953eMatthew Wilcoxefi_memmap_init(u64 *s, u64 *e) 1073d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck{ 1074e037cda559547e6353c5a792802963572d0b750eKeith Owens struct kern_memdesc *k, *prev = NULL; 1075d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 contig_low=0, contig_high=0; 1076d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 as, ae, lim; 1077d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck void *efi_map_start, *efi_map_end, *p, *q; 1078d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck efi_memory_desc_t *md, *pmd = NULL, *check_md; 1079d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck u64 efi_desc_size; 1080d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck unsigned long total_mem = 0; 1081d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1082d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k = kern_memmap = find_memmap_space(); 1083d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1084d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck efi_map_start = __va(ia64_boot_param->efi_memmap); 1085d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 1086d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck efi_desc_size = ia64_boot_param->efi_memdesc_size; 1087d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1088d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck for (p = efi_map_start; p < efi_map_end; pmd = md, p += efi_desc_size) { 1089d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck md = p; 1090d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (!efi_wb(md)) { 10917d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (efi_uc(md) && 10927d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (md->type == EFI_CONVENTIONAL_MEMORY || 10937d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis md->type == EFI_BOOT_SERVICES_DATA)) { 1094d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->attribute = EFI_MEMORY_UC; 1095d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->start = md->phys_addr; 1096d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->num_pages = md->num_pages; 1097d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k++; 1098d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1099d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 1100d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 11017d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (pmd == NULL || !efi_wb(pmd) || 11027d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_md_end(pmd) != md->phys_addr) { 1103d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck contig_low = GRANULEROUNDUP(md->phys_addr); 1104d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck contig_high = efi_md_end(md); 11057d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis for (q = p + efi_desc_size; q < efi_map_end; 11067d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis q += efi_desc_size) { 1107d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck check_md = q; 1108d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (!efi_wb(check_md)) 1109d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck break; 1110d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (contig_high != check_md->phys_addr) 1111d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck break; 1112d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck contig_high = efi_md_end(check_md); 1113d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1114d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck contig_high = GRANULEROUNDDOWN(contig_high); 1115d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 111666888a6e5ffc756b9a4115fc766ee2258eefb928Christoph Lameter if (!is_memory_available(md)) 1117d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 1118d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1119e55fdf11f3029bcd41b1b9547ad9db12c27eea76Tony Luck#ifdef CONFIG_CRASH_DUMP 1120e55fdf11f3029bcd41b1b9547ad9db12c27eea76Tony Luck /* saved_max_pfn should ignore max_addr= command line arg */ 1121e55fdf11f3029bcd41b1b9547ad9db12c27eea76Tony Luck if (saved_max_pfn < (efi_md_end(md) >> PAGE_SHIFT)) 1122e55fdf11f3029bcd41b1b9547ad9db12c27eea76Tony Luck saved_max_pfn = (efi_md_end(md) >> PAGE_SHIFT); 1123e55fdf11f3029bcd41b1b9547ad9db12c27eea76Tony Luck#endif 1124d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck /* 1125d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * Round ends inward to granule boundaries 1126d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck * Give trimmings to uncached allocator 1127d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck */ 1128d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (md->phys_addr < contig_low) { 1129d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck lim = min(efi_md_end(md), contig_low); 1130d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (efi_uc(md)) { 11317d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (k > kern_memmap && 11327d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (k-1)->attribute == EFI_MEMORY_UC && 1133d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck kmd_end(k-1) == md->phys_addr) { 11347d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (k-1)->num_pages += 11357d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis (lim - md->phys_addr) 11367d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis >> EFI_PAGE_SHIFT; 1137d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } else { 1138d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->attribute = EFI_MEMORY_UC; 1139d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->start = md->phys_addr; 11407d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis k->num_pages = (lim - md->phys_addr) 11417d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis >> EFI_PAGE_SHIFT; 1142d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k++; 1143d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1144d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1145d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck as = contig_low; 1146d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } else 1147d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck as = md->phys_addr; 1148d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1149d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (efi_md_end(md) > contig_high) { 1150d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck lim = max(md->phys_addr, contig_high); 1151d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (efi_uc(md)) { 1152d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (lim == md->phys_addr && k > kern_memmap && 1153d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck (k-1)->attribute == EFI_MEMORY_UC && 1154d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck kmd_end(k-1) == md->phys_addr) { 1155d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck (k-1)->num_pages += md->num_pages; 1156d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } else { 1157d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->attribute = EFI_MEMORY_UC; 1158d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->start = lim; 11597d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis k->num_pages = (efi_md_end(md) - lim) 11607d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis >> EFI_PAGE_SHIFT; 1161d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k++; 1162d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1163d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1164d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck ae = contig_high; 1165d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } else 1166d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck ae = efi_md_end(md); 1167d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1168a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai /* keep within max_addr= and min_addr= command line arg */ 1169a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai as = max(as, min_addr); 1170d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck ae = min(ae, max_addr); 1171d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (ae <= as) 1172d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 1173d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1174d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck /* avoid going over mem= command line arg */ 1175d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (total_mem + (ae - as) > mem_limit) 1176d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck ae -= total_mem + (ae - as) - mem_limit; 1177d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1178d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (ae <= as) 1179d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 1180d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck if (prev && kmd_end(prev) == md->phys_addr) { 1181d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck prev->num_pages += (ae - as) >> EFI_PAGE_SHIFT; 1182d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck total_mem += ae - as; 1183d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck continue; 1184d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1185d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->attribute = EFI_MEMORY_WB; 1186d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->start = as; 1187d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->num_pages = (ae - as) >> EFI_PAGE_SHIFT; 1188d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck total_mem += ae - as; 1189d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck prev = k++; 1190d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck } 1191d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck k->start = ~0L; /* end-marker */ 1192d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck 1193d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck /* reserve the memory we are using for kern_memmap */ 1194d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck *s = (u64)kern_memmap; 1195d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck *e = (u64)++k; 1196cb3808532eeb1719667356157fac9222ccb2c4ffBernhard Walle 1197cb3808532eeb1719667356157fac9222ccb2c4ffBernhard Walle return total_mem; 1198d8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7Tony Luck} 1199be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1200be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Azizvoid 1201be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Azizefi_initialize_iomem_resources(struct resource *code_resource, 120200bf4098beb15ca174b54f3af1f1e1908d7d18a3Bernhard Walle struct resource *data_resource, 120300bf4098beb15ca174b54f3af1f1e1908d7d18a3Bernhard Walle struct resource *bss_resource) 1204be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz{ 1205be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz struct resource *res; 1206be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz void *efi_map_start, *efi_map_end, *p; 1207be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz efi_memory_desc_t *md; 1208be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz u64 efi_desc_size; 1209be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz char *name; 1210be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz unsigned long flags; 1211be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1212be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz efi_map_start = __va(ia64_boot_param->efi_memmap); 1213be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 1214be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz efi_desc_size = ia64_boot_param->efi_memdesc_size; 1215be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1216be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz res = NULL; 1217be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1218be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) { 1219be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz md = p; 1220be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1221be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz if (md->num_pages == 0) /* should not happen */ 1222be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz continue; 1223be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1224887c3cb18865a4f9e0786e5a5b3ef47ff469b956Yasunori Goto flags = IORESOURCE_MEM | IORESOURCE_BUSY; 1225be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz switch (md->type) { 1226be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1227be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_MEMORY_MAPPED_IO: 1228be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_MEMORY_MAPPED_IO_PORT_SPACE: 1229be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz continue; 1230be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1231be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_LOADER_CODE: 1232be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_LOADER_DATA: 1233be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_BOOT_SERVICES_DATA: 1234be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_BOOT_SERVICES_CODE: 1235be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_CONVENTIONAL_MEMORY: 1236be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz if (md->attribute & EFI_MEMORY_WP) { 1237be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz name = "System ROM"; 1238be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz flags |= IORESOURCE_READONLY; 1239d3758f87f39c5b072dde74c55bfb988262a3a45cJay Lan } else if (md->attribute == EFI_MEMORY_UC) 1240d3758f87f39c5b072dde74c55bfb988262a3a45cJay Lan name = "Uncached RAM"; 1241d3758f87f39c5b072dde74c55bfb988262a3a45cJay Lan else 1242be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz name = "System RAM"; 1243be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz break; 1244be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1245be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_ACPI_MEMORY_NVS: 1246be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz name = "ACPI Non-volatile Storage"; 1247be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz break; 1248be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1249be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_UNUSABLE_MEMORY: 1250be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz name = "reserved"; 1251887c3cb18865a4f9e0786e5a5b3ef47ff469b956Yasunori Goto flags |= IORESOURCE_DISABLED; 1252be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz break; 1253be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1254be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_RESERVED_TYPE: 1255be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_RUNTIME_SERVICES_CODE: 1256be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_RUNTIME_SERVICES_DATA: 1257be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz case EFI_ACPI_RECLAIM_MEMORY: 1258be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz default: 1259be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz name = "reserved"; 1260be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz break; 1261be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz } 1262be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 12637d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if ((res = kzalloc(sizeof(struct resource), 12647d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis GFP_KERNEL)) == NULL) { 12657d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis printk(KERN_ERR 1266965e7c8affeca27f7e5de75c97954e74d3b8052dAron Griffis "failed to allocate resource for iomem\n"); 1267be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz return; 1268be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz } 1269be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1270be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz res->name = name; 1271be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz res->start = md->phys_addr; 1272685c7f5d3629d558b17ee193b6d7f194e82aadf0Li Zefan res->end = md->phys_addr + efi_md_size(md) - 1; 1273be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz res->flags = flags; 1274be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz 1275be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz if (insert_resource(&iomem_resource, res) < 0) 1276be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz kfree(res); 1277be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz else { 1278be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz /* 1279be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz * We don't know which region contains 1280be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz * kernel data so we try it repeatedly and 1281be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz * let the resource manager test it. 1282be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz */ 1283be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz insert_resource(res, code_resource); 1284be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz insert_resource(res, data_resource); 128500bf4098beb15ca174b54f3af1f1e1908d7d18a3Bernhard Walle insert_resource(res, bss_resource); 1286a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai#ifdef CONFIG_KEXEC 1287a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai insert_resource(res, &efi_memmap_res); 1288a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai insert_resource(res, &boot_param_res); 1289a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai if (crashk_res.end > crashk_res.start) 1290a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai insert_resource(res, &crashk_res); 1291a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai#endif 1292be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz } 1293be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz } 1294be379124c0a5abfbe57dab2823fe8a71ce797aeeKhalid Aziz} 1295a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai 1296a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai#ifdef CONFIG_KEXEC 1297a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai/* find a block of memory aligned to 64M exclude reserved regions 1298a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai rsvd_regions are sorted 1299a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai */ 13002a3a2827c7cbe464610116cc17ca4fac63245a43Hormsunsigned long __init 13017d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffiskdump_find_rsvd_region (unsigned long size, struct rsvd_region *r, int n) 1302a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai{ 13037d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis int i; 13047d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis u64 start, end; 13057d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis u64 alignment = 1UL << _PAGE_SIZE_64M; 13067d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis void *efi_map_start, *efi_map_end, *p; 13077d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_memory_desc_t *md; 13087d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis u64 efi_desc_size; 13097d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis 13107d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_map_start = __va(ia64_boot_param->efi_memmap); 13117d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 13127d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis efi_desc_size = ia64_boot_param->efi_memdesc_size; 13137d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis 13147d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) { 13157d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis md = p; 13167d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (!efi_wb(md)) 13177d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis continue; 13187d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis start = ALIGN(md->phys_addr, alignment); 13197d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis end = efi_md_end(md); 13207d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis for (i = 0; i < n; i++) { 13217d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (__pa(r[i].start) >= start && __pa(r[i].end) < end) { 13227d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (__pa(r[i].start) > start + size) 13237d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return start; 13247d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis start = ALIGN(__pa(r[i].end), alignment); 13257d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (i < n-1 && 13267d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis __pa(r[i+1].start) < start + size) 13277d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis continue; 13287d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis else 13297d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis break; 13307d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis } 1331a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai } 13327d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis if (end > start + size) 13337d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return start; 13347d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis } 13357d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis 13367d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis printk(KERN_WARNING 13377d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis "Cannot reserve 0x%lx byte of memory for crashdump\n", size); 13387d9aed26ed11d7a472104b7078b0c5e4fd416059Aron Griffis return ~0UL; 1339a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai} 1340a79561134f38de12dce14ed72138f38e55ef53fcZou Nan hai#endif 1341cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm 1342d9a9855d0b06ca6d6cc92596fedcc03f8512e062Simon Horman#ifdef CONFIG_CRASH_DUMP 1343cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm/* locate the size find a the descriptor at a certain address */ 13441775fe851632fd906bc5e5c6f77494d8f7ef1275Simon Hormanunsigned long __init 1345cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Dammvmcore_find_descriptor_size (unsigned long address) 1346cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm{ 1347cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm void *efi_map_start, *efi_map_end, *p; 1348cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm efi_memory_desc_t *md; 1349cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm u64 efi_desc_size; 1350cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm unsigned long ret = 0; 1351cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm 1352cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm efi_map_start = __va(ia64_boot_param->efi_memmap); 1353cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size; 1354cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm efi_desc_size = ia64_boot_param->efi_memdesc_size; 1355cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm 1356cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) { 1357cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm md = p; 1358cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm if (efi_wb(md) && md->type == EFI_LOADER_DATA 1359cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm && md->phys_addr == address) { 1360cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm ret = efi_md_size(md); 1361cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm break; 1362cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm } 1363cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm } 1364cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm 1365cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm if (ret == 0) 1366cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm printk(KERN_WARNING "Cannot locate EFI vmcore descriptor\n"); 1367cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm 1368cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm return ret; 1369cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm} 1370cee87af2a5f75713b98d3e65e43872e547122cd5Magnus Damm#endif 1371