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187 lines
4.6 KiB
187 lines
4.6 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* identify.c: machine identification code. |
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* |
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* Copyright (C) 1998 Harald Koerfgen and Paul M. Antoine |
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* Copyright (C) 2002, 2003, 2004, 2005 Maciej W. Rozycki |
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*/ |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/mc146818rtc.h> |
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#include <linux/export.h> |
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#include <linux/string.h> |
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#include <linux/types.h> |
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#include <asm/bootinfo.h> |
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#include <asm/dec/ioasic.h> |
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#include <asm/dec/ioasic_addrs.h> |
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#include <asm/dec/kn01.h> |
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#include <asm/dec/kn02.h> |
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#include <asm/dec/kn02ba.h> |
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#include <asm/dec/kn02ca.h> |
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#include <asm/dec/kn03.h> |
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#include <asm/dec/kn230.h> |
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#include <asm/dec/prom.h> |
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#include <asm/dec/system.h> |
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#include "dectypes.h" |
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static const char *dec_system_strings[] = { |
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[MACH_DSUNKNOWN] "unknown DECstation", |
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[MACH_DS23100] "DECstation 2100/3100", |
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[MACH_DS5100] "DECsystem 5100", |
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[MACH_DS5000_200] "DECstation 5000/200", |
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[MACH_DS5000_1XX] "DECstation 5000/1xx", |
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[MACH_DS5000_XX] "Personal DECstation 5000/xx", |
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[MACH_DS5000_2X0] "DECstation 5000/2x0", |
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[MACH_DS5400] "DECsystem 5400", |
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[MACH_DS5500] "DECsystem 5500", |
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[MACH_DS5800] "DECsystem 5800", |
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[MACH_DS5900] "DECsystem 5900", |
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}; |
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const char *get_system_type(void) |
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{ |
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#define STR_BUF_LEN 64 |
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static char system[STR_BUF_LEN]; |
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static int called = 0; |
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if (called == 0) { |
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called = 1; |
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snprintf(system, STR_BUF_LEN, "Digital %s", |
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dec_system_strings[mips_machtype]); |
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} |
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return system; |
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} |
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/* |
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* Setup essential system-specific memory addresses. We need them |
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* early. Semantically the functions belong to prom/init.c, but they |
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* are compact enough we want them inlined. --macro |
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*/ |
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volatile u8 *dec_rtc_base; |
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EXPORT_SYMBOL(dec_rtc_base); |
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static inline void prom_init_kn01(void) |
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{ |
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dec_kn_slot_base = KN01_SLOT_BASE; |
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dec_kn_slot_size = KN01_SLOT_SIZE; |
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dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN01_RTC); |
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} |
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static inline void prom_init_kn230(void) |
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{ |
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dec_kn_slot_base = KN01_SLOT_BASE; |
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dec_kn_slot_size = KN01_SLOT_SIZE; |
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dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN01_RTC); |
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} |
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static inline void prom_init_kn02(void) |
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{ |
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dec_kn_slot_base = KN02_SLOT_BASE; |
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dec_kn_slot_size = KN02_SLOT_SIZE; |
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dec_tc_bus = 1; |
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dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + KN02_RTC); |
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} |
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static inline void prom_init_kn02xa(void) |
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{ |
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dec_kn_slot_base = KN02XA_SLOT_BASE; |
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dec_kn_slot_size = IOASIC_SLOT_SIZE; |
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dec_tc_bus = 1; |
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ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL); |
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dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY); |
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} |
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static inline void prom_init_kn03(void) |
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{ |
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dec_kn_slot_base = KN03_SLOT_BASE; |
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dec_kn_slot_size = IOASIC_SLOT_SIZE; |
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dec_tc_bus = 1; |
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ioasic_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_IOCTL); |
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dec_rtc_base = (void *)CKSEG1ADDR(dec_kn_slot_base + IOASIC_TOY); |
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} |
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void __init prom_identify_arch(u32 magic) |
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{ |
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unsigned char dec_cpunum, dec_firmrev, dec_etc, dec_systype; |
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u32 dec_sysid; |
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if (!prom_is_rex(magic)) { |
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dec_sysid = simple_strtoul(prom_getenv("systype"), |
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(char **)0, 0); |
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} else { |
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dec_sysid = rex_getsysid(); |
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if (dec_sysid == 0) { |
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printk("Zero sysid returned from PROM! " |
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"Assuming a PMAX-like machine.\n"); |
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dec_sysid = 1; |
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} |
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} |
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dec_cpunum = (dec_sysid & 0xff000000) >> 24; |
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dec_systype = (dec_sysid & 0xff0000) >> 16; |
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dec_firmrev = (dec_sysid & 0xff00) >> 8; |
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dec_etc = dec_sysid & 0xff; |
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/* |
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* FIXME: This may not be an exhaustive list of DECStations/Servers! |
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* Put all model-specific initialisation calls here. |
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*/ |
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switch (dec_systype) { |
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case DS2100_3100: |
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mips_machtype = MACH_DS23100; |
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prom_init_kn01(); |
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break; |
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case DS5100: /* DS5100 MIPSMATE */ |
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mips_machtype = MACH_DS5100; |
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prom_init_kn230(); |
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break; |
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case DS5000_200: /* DS5000 3max */ |
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mips_machtype = MACH_DS5000_200; |
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prom_init_kn02(); |
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break; |
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case DS5000_1XX: /* DS5000/100 3min */ |
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mips_machtype = MACH_DS5000_1XX; |
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prom_init_kn02xa(); |
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break; |
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case DS5000_2X0: /* DS5000/240 3max+ or DS5900 bigmax */ |
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mips_machtype = MACH_DS5000_2X0; |
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prom_init_kn03(); |
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if (!(ioasic_read(IO_REG_SIR) & KN03_IO_INR_3MAXP)) |
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mips_machtype = MACH_DS5900; |
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break; |
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case DS5000_XX: /* Personal DS5000/xx maxine */ |
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mips_machtype = MACH_DS5000_XX; |
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prom_init_kn02xa(); |
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break; |
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case DS5800: /* DS5800 Isis */ |
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mips_machtype = MACH_DS5800; |
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break; |
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case DS5400: /* DS5400 MIPSfair */ |
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mips_machtype = MACH_DS5400; |
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break; |
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case DS5500: /* DS5500 MIPSfair-2 */ |
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mips_machtype = MACH_DS5500; |
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break; |
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default: |
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mips_machtype = MACH_DSUNKNOWN; |
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break; |
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} |
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if (mips_machtype == MACH_DSUNKNOWN) |
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printk("This is an %s, id is %x\n", |
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dec_system_strings[mips_machtype], dec_systype); |
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else |
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printk("This is a %s\n", dec_system_strings[mips_machtype]); |
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}
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