11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * linux/arch/m68k/sun3/config.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1996,1997 Pekka Pietik{inen 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This file is subject to the terms and conditions of the GNU General Public 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * License. See the file COPYING in the main directory of this archive 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for more details. 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 14813dcf7a6e642feb1ea566b96ce2912249d2b57dAlexey Dobriyan#include <linux/seq_file.h> 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/console.h> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/bootmem.h> 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/oplib.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/setup.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/contregs.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/movs.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/pgtable.h> 2512d810c1b8c2b913d48e629e2b5c01d105029839Roman Zippel#include <asm/pgalloc.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/sun3-head.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/sun3mmu.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/rtc.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/machdep.h> 30c85627fbf5f47045b25bf66f1b4a7001b5b157afGeert Uytterhoeven#include <asm/idprom.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/intersil.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/irq.h> 33c85627fbf5f47045b25bf66f1b4a7001b5b157afGeert Uytterhoeven#include <asm/sections.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/segment.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/sun3ints.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldschar sun3_reserved_pmeg[SUN3_PMEGS_NUM]; 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39c8d5ba1891eda2aa63800f052cb5af128283d130Stephen Warrenextern u32 sun3_gettimeoffset(void); 4007b8125949de66b6552966de8d4280c3a8620359Adrian Bunkstatic void sun3_sched_init(irq_handler_t handler); 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern void sun3_get_model (char* model); 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern int sun3_hwclk(int set, struct rtc_time *t); 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvolatile char* clock_va; 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern unsigned long availmem; 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned long num_pages; 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 48813dcf7a6e642feb1ea566b96ce2912249d2b57dAlexey Dobriyanstatic void sun3_get_hardware_list(struct seq_file *m) 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 50813dcf7a6e642feb1ea566b96ce2912249d2b57dAlexey Dobriyan seq_printf(m, "PROM Revision:\t%s\n", romvec->pv_monid); 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid __init sun3_init(void) 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char enable_register; 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m68k_machtype= MACH_SUN3; 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m68k_cputype = CPU_68020; 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m68k_fputype = FPU_68881; /* mc68881 actually */ 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m68k_mmutype = MMU_SUN3; 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds clock_va = (char *) 0xfe06000; /* dark */ 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_intreg = (unsigned char *) 0xfe0a000; /* magic */ 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_disable_interrupts(); 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prom_init((void *)LINUX_OPPROM_BEGVM); 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds GET_CONTROL_BYTE(AC_SENABLE,enable_register); 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enable_register |= 0x50; /* Enable FPU */ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SET_CONTROL_BYTE(AC_SENABLE,enable_register); 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds GET_CONTROL_BYTE(AC_SENABLE,enable_register); 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* This code looks suspicious, because it doesn't subtract 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memory belonging to the kernel from the available space */ 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(sun3_reserved_pmeg, 0, sizeof(sun3_reserved_pmeg)); 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Reserve important PMEGS */ 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: These should be probed instead of hardcoded */ 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i=0; i<8; i++) /* Kernel PMEGs */ 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_reserved_pmeg[i] = 1; 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_reserved_pmeg[247] = 1; /* ROM mapping */ 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_reserved_pmeg[248] = 1; /* AMD Ethernet */ 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_reserved_pmeg[251] = 1; /* VB area */ 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_reserved_pmeg[254] = 1; /* main I/O */ 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_reserved_pmeg[249] = 1; 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_reserved_pmeg[252] = 1; 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_reserved_pmeg[253] = 1; 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_fs(KERNEL_DS); 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Without this, Bad Things happen when something calls arch_reset. */ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void sun3_reboot (void) 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prom_reboot ("vmlinux"); 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void sun3_halt (void) 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prom_halt (); 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* sun3 bootmem allocation */ 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10907b8125949de66b6552966de8d4280c3a8620359Adrian Bunkstatic void __init sun3_bootmem_alloc(unsigned long memory_start, 11007b8125949de66b6552966de8d4280c3a8620359Adrian Bunk unsigned long memory_end) 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long start_page; 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* align start/end to page boundaries */ 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memory_start = ((memory_start + (PAGE_SIZE-1)) & PAGE_MASK); 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memory_end = memory_end & PAGE_MASK; 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds start_page = __pa(memory_start) >> PAGE_SHIFT; 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds num_pages = __pa(memory_end) >> PAGE_SHIFT; 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds high_memory = (void *)memory_end; 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds availmem = memory_start; 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12412d810c1b8c2b913d48e629e2b5c01d105029839Roman Zippel m68k_setup_node(0); 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds availmem += init_bootmem_node(NODE_DATA(0), start_page, 0, num_pages); 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds availmem = (availmem + (PAGE_SIZE-1)) & PAGE_MASK; 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_bootmem(__pa(availmem), memory_end - (availmem)); 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid __init config_sun3(void) 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long memory_start, memory_end; 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("ARCH: SUN3\n"); 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds idprom_init(); 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Subtract kernel memory from available memory */ 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mach_sched_init = sun3_sched_init; 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mach_init_IRQ = sun3_init_IRQ; 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mach_reset = sun3_reboot; 144c8d5ba1891eda2aa63800f052cb5af128283d130Stephen Warren arch_gettimeoffset = sun3_gettimeoffset; 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mach_get_model = sun3_get_model; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mach_hwclk = sun3_hwclk; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mach_halt = sun3_halt; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mach_get_hardware_list = sun3_get_hardware_list; 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 150c85627fbf5f47045b25bf66f1b4a7001b5b157afGeert Uytterhoeven memory_start = ((((unsigned long)_end) + 0x2000) & ~0x1fff); 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds// PROM seems to want the last couple of physical pages. --m 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memory_end = *(romvec->pv_sun3mem) + PAGE_OFFSET - 2*PAGE_SIZE; 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m68k_num_memory=1; 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds m68k_memory[0].size=*(romvec->pv_sun3mem); 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_bootmem_alloc(memory_start, memory_end); 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16007b8125949de66b6552966de8d4280c3a8620359Adrian Bunkstatic void __init sun3_sched_init(irq_handler_t timer_routine) 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_disable_interrupts(); 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_DISABLE|INTERSIL_24H_MODE); 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds intersil_clock->int_reg=INTERSIL_HZ_100_MASK; 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds intersil_clear(); 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_enable_irq(5); 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds intersil_clock->cmd_reg=(INTERSIL_RUN|INTERSIL_INT_ENABLE|INTERSIL_24H_MODE); 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sun3_enable_interrupts(); 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds intersil_clear(); 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 172