11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2000, 2001, 2002, 2003 Broadcom Corporation 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * modify it under the terms of the GNU General Public License 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as published by the Free Software Foundation; either version 2 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of the License, or (at your option) any later version. 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License for more details. 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * along with this program; if not, write to the Free Software 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/linkage.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/blkdev.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/bootmem.h> 25fcdb27ad1d5c66611d3df6400a9b559186f266feRalf Baechle#include <linux/pm.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/smp.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/bootinfo.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/reboot.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/sibyte/board.h> 3187353d8ac39c52784da605ecbe965ecdfad609adRalf Baechle#include <asm/smp-ops.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 33df78b5c8faa72b3c04f82faab126de93af178348Aurelien Jarno#include <asm/fw/cfe/cfe_api.h> 34df78b5c8faa72b3c04f82faab126de93af178348Aurelien Jarno#include <asm/fw/cfe/cfe_error.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Max ram addressable in 32-bit segments */ 37875d43e72b5bf22161a81de7554f88eccf8a51aeRalf Baechle#ifdef CONFIG_64BIT 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MAX_RAM_SIZE (~0ULL) 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_HIGHMEM 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_64BIT_PHYS_ADDR 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MAX_RAM_SIZE (~0ULL) 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MAX_RAM_SIZE (0xffffffffULL) 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MAX_RAM_SIZE (0x1fffffffULL) 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SIBYTE_MAX_MEM_REGIONS 8 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsphys_t board_mem_region_addrs[SIBYTE_MAX_MEM_REGIONS]; 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsphys_t board_mem_region_sizes[SIBYTE_MAX_MEM_REGIONS]; 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned int board_mem_region_count; 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint cfe_cons_handle; 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_BLK_DEV_INITRD 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern unsigned long initrd_start, initrd_end; 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 62b3f6df9f21c6efc4641613188204aa0742bc9e22Robert P. J. Daystatic void __noreturn cfe_linux_exit(void *arg) 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int warm = *(int *)arg; 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (smp_processor_id()) { 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static int reboot_smp; 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Don't repeat the process from another CPU */ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!reboot_smp) { 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get CPU 0 to do the cfe_exit */ 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds reboot_smp = 1; 738691e5a8f691cc2a4fda0651e8d307aaba0e7d68Jens Axboe smp_call_function(cfe_linux_exit, arg, 0); 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Passing control back to CFE...\n"); 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_exit(warm, 0); 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("cfe_exit returned??\n"); 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (1); 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 83b3f6df9f21c6efc4641613188204aa0742bc9e22Robert P. J. Daystatic void __noreturn cfe_linux_restart(char *command) 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const int zero; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_linux_exit((void *)&zero); 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 90b3f6df9f21c6efc4641613188204aa0742bc9e22Robert P. J. Daystatic void __noreturn cfe_linux_halt(void) 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static const int one = 1; 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_linux_exit((void *)&one); 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic __init void prom_meminit(void) 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u64 addr, size, type; /* regardless of 64BIT_PHYS_ADDR */ 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int mem_flags = 0; 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int idx; 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rd_flag; 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_BLK_DEV_INITRD 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long initrd_pstart; 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long initrd_pend; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds initrd_pstart = CPHYSADDR(initrd_start); 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds initrd_pend = CPHYSADDR(initrd_end); 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (initrd_start && 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((initrd_pstart > MAX_RAM_SIZE) 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds || (initrd_pend > MAX_RAM_SIZE))) { 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds panic("initrd out of addressable memory"); 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* INITRD */ 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (idx = 0; cfe_enummem(idx, mem_flags, &addr, &size, &type) != CFE_ERR_NOMORE; 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds idx++) { 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rd_flag = 0; 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (type == CFE_MI_AVAILABLE) { 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * See if this block contains (any portion of) the 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ramdisk 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_BLK_DEV_INITRD 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (initrd_start) { 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((initrd_pstart > addr) && 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (initrd_pstart < (addr + size))) { 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_memory_region(addr, 1307034228792cc561e79ff8600f02884bd4c80e287Ralf Baechle initrd_pstart - addr, 1317034228792cc561e79ff8600f02884bd4c80e287Ralf Baechle BOOT_MEM_RAM); 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rd_flag = 1; 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((initrd_pend > addr) && 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (initrd_pend < (addr + size))) { 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_memory_region(initrd_pend, 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (addr + size) - initrd_pend, 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BOOT_MEM_RAM); 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rd_flag = 1; 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!rd_flag) { 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (addr > MAX_RAM_SIZE) 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (addr+size > MAX_RAM_SIZE) 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size = MAX_RAM_SIZE - (addr+size) + 1; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * memcpy/__copy_user prefetch, which 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * will cause a bus error for 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * KSEG/KUSEG addrs not backed by RAM. 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Hence, reserve some padding for the 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * prefetch distance. 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (size > 512) 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size -= 512; 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_memory_region(addr, size, BOOT_MEM_RAM); 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board_mem_region_addrs[board_mem_region_count] = addr; 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board_mem_region_sizes[board_mem_region_count] = size; 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds board_mem_region_count++; 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (board_mem_region_count == 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SIBYTE_MAX_MEM_REGIONS) { 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Too many regions. Need to configure more 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while(1); 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_BLK_DEV_INITRD 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (initrd_start) { 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds add_memory_region(initrd_pstart, initrd_pend - initrd_pstart, 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BOOT_MEM_RESERVED); 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_BLK_DEV_INITRD 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init initrd_setup(char *str) 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char rdarg[64]; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int idx; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *tmp, *endptr; 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long initrd_size; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Make a copy of the initrd argument so we can smash it up here */ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (idx = 0; idx < sizeof(rdarg)-1; idx++) { 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!str[idx] || (str[idx] == ' ')) break; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rdarg[idx] = str[idx]; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rdarg[idx] = 0; 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds str = rdarg; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *Initrd location comes in the form "<hex size of ramdisk in bytes>@<location in memory>" 1987034228792cc561e79ff8600f02884bd4c80e287Ralf Baechle * e.g. initrd=3abfd@80010000. This is set up by the loader. 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (tmp = str; *tmp != '@'; tmp++) { 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!*tmp) { 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto fail; 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *tmp = 0; 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp++; 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!*tmp) { 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto fail; 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds initrd_size = simple_strtoul(str, &endptr, 16); 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (*endptr) { 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(tmp-1) = '@'; 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto fail; 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(tmp-1) = '@'; 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds initrd_start = simple_strtoul(tmp, &endptr, 16); 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (*endptr) { 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto fail; 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds initrd_end = initrd_start + initrd_size; 22136a885306fdf7bb557c773309c993bfb2d0d693cRalf Baechle printk("Found initrd of %lx@%lx\n", initrd_size, initrd_start); 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fail: 22436a885306fdf7bb557c773309c993bfb2d0d693cRalf Baechle printk("Bad initrd argument. Disabling initrd\n"); 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds initrd_start = 0; 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds initrd_end = 0; 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23287353d8ac39c52784da605ecbe965ecdfad609adRalf Baechleextern struct plat_smp_ops sb_smp_ops; 23387353d8ac39c52784da605ecbe965ecdfad609adRalf Baechleextern struct plat_smp_ops bcm1480_smp_ops; 23487353d8ac39c52784da605ecbe965ecdfad609adRalf Baechle 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * prom_init is called just after the cpu type is determined, from setup_arch() 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid __init prom_init(void) 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uint64_t cfe_ept, cfe_handle; 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int cfe_eptseal; 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int argc = fw_arg0; 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char **envp = (char **) fw_arg2; 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int *prom_vec = (int *) fw_arg3; 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _machine_restart = cfe_linux_restart; 2477034228792cc561e79ff8600f02884bd4c80e287Ralf Baechle _machine_halt = cfe_linux_halt; 248fcdb27ad1d5c66611d3df6400a9b559186f266feRalf Baechle pm_power_off = cfe_linux_halt; 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Check if a loader was used; if NOT, the 4 arguments are 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * what CFE gives us (handle, 0, EPT and EPTSEAL) 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (argc < 0) { 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_handle = (uint64_t)(long)argc; 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_ept = (long)envp; 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_eptseal = (uint32_t)(unsigned long)prom_vec; 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((int32_t)(long)prom_vec < 0) { 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Old loader; all it gives us is the handle, 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * so use the "known" entrypoint and assume 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the seal. 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_handle = (uint64_t)(long)prom_vec; 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_ept = (uint64_t)((int32_t)0x9fc00500); 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_eptseal = CFE_EPTSEAL; 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Newer loaders bundle the handle/ept/eptseal 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: prom_vec is in the loader's useg 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * which is still alive in the TLB. 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_handle = (uint64_t)((int32_t *)prom_vec)[0]; 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_ept = (uint64_t)((int32_t *)prom_vec)[2]; 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_eptseal = (unsigned int)((uint32_t *)prom_vec)[3]; 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cfe_eptseal != CFE_EPTSEAL) { 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* too early for panic to do any good */ 28136a885306fdf7bb557c773309c993bfb2d0d693cRalf Baechle printk("CFE's entrypoint seal doesn't match. Spinning."); 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (1) ; 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_init(cfe_handle, cfe_ept); 28542a3b4f25af8f8d77feddf27f839fa0628dbff1aRalf Baechle /* 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Get the handle for (at least) prom_putchar, possibly for 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * boot console 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cfe_cons_handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE); 2907580c9c3938f45b0d889728d5533cb46b0322a85Dmitri Vorobiev if (cfe_getenv("LINUX_CMDLINE", arcs_cmdline, COMMAND_LINE_SIZE) < 0) { 291e082f188f774544bc2c2edf51176157503c98fe4Ralf Baechle if (argc >= 0) { 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* The loader should have set the command line */ 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* too early for panic to do any good */ 29436a885306fdf7bb557c773309c993bfb2d0d693cRalf Baechle printk("LINUX_CMDLINE not defined in cfe."); 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (1) ; 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_BLK_DEV_INITRD 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *ptr; 3027034228792cc561e79ff8600f02884bd4c80e287Ralf Baechle /* Need to find out early whether we've got an initrd. So scan 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds the list looking now */ 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (ptr = arcs_cmdline; *ptr; ptr++) { 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (*ptr == ' ') { 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ptr++; 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!strncmp(ptr, "initrd=", 7)) { 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds initrd_setup(ptr+7); 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (*ptr && (*ptr != ' ')) { 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ptr++; 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* CONFIG_BLK_DEV_INITRD */ 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Not sure this is needed, but it's the safe way. */ 3217580c9c3938f45b0d889728d5533cb46b0322a85Dmitri Vorobiev arcs_cmdline[COMMAND_LINE_SIZE-1] = 0; 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prom_meminit(); 32487353d8ac39c52784da605ecbe965ecdfad609adRalf Baechle 32587353d8ac39c52784da605ecbe965ecdfad609adRalf Baechle#if defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250) 32687353d8ac39c52784da605ecbe965ecdfad609adRalf Baechle register_smp_ops(&sb_smp_ops); 32787353d8ac39c52784da605ecbe965ecdfad609adRalf Baechle#endif 32887353d8ac39c52784da605ecbe965ecdfad609adRalf Baechle#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80) 32987353d8ac39c52784da605ecbe965ecdfad609adRalf Baechle register_smp_ops(&bcm1480_smp_ops); 33087353d8ac39c52784da605ecbe965ecdfad609adRalf Baechle#endif 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 333c44e8d5e47b8ba672440b92eab0735628469116cAtsushi Nemotovoid __init prom_free_prom_memory(void) 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Not sure what I'm supposed to do here. Nothing, I think */ 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid prom_putchar(char c) 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while ((ret = cfe_write(cfe_cons_handle, &c, 1)) == 0) 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ; 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 345