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Diffstat (limited to 'arch/mips/dec/decstation.c')
| -rw-r--r-- | arch/mips/dec/decstation.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/arch/mips/dec/decstation.c b/arch/mips/dec/decstation.c deleted file mode 100644 index ae64c32f5..000000000 --- a/arch/mips/dec/decstation.c +++ /dev/null @@ -1,200 +0,0 @@ -/* - * arch/mips/dec/decstation.c - * - * Copyright (C) 1996 Paul M. Antoine - * - * Written by Paul Antoine. - * - * FIXME: still plenty to do in this file, as we don't yet fully fill - * the boot info structure with DEC-specific tags. Also still - * too specific to the Person Decstattion 5000/2x!! - */ - -#include <asm/dec/decstation.h> -#include <asm/dec/maxine.h> /* FIXME: what about other decstations? */ -#include <asm/bootinfo.h> - -/* - * dec_setup: Called at boot from dec_entry() in boot.S to do - * DECStation-specific setup, and to fill in the kernel argument - * tags. - * - * FIXME: I'm not sure all DEC workstations are correctly supported. This - * code may not need to be here when booting off floppy or HD?? - */ - -unsigned long mach_mem_upper = 0; -unsigned long mach_mem_lower = 0; -unsigned long mips_dcache_size = 0; -unsigned long mips_icache_size = 0; -unsigned long rex_prom_magic; /* from boot.S */ -unsigned long dec_get_memory_size(void); - -void dec_setup(void) -{ - unsigned long int mem_mask = 0; - unsigned long tag_data_dummy, dec_sysid; - unsigned char dec_cpunum, dec_systype, dec_firmrev, dec_etc; - extern const char *linux_banner; - - pmax_printf("%s\n", linux_banner); - /* First we need the memory upper bound before we can add tag entries... */ - mach_mem_lower = 0x80000000L; - mach_mem_upper = mach_mem_lower + dec_get_memory_size(); - - /* First tag is always memory upper limit, right Stoned?? */ - (void)bi_TagAdd(tag_memupper, ULONGSIZE, &mach_mem_upper); - - /* We're obviously one of the DEC machines */ - tag_data_dummy = MACH_GROUP_DEC; - (void)bi_TagAdd(tag_machgroup, ULONGSIZE, &tag_data_dummy); - - /* Now let's try to figure out what type of DECStation we are */ - pmax_printf("System id is: "); - if ((dec_sysid = pmax_getsysid()) != 0) - pmax_printf("%x\n", dec_sysid); - else - pmax_printf("unknown\n"); - - dec_cpunum = (dec_sysid & 0xff000000) >> 24; - dec_systype = (dec_sysid & 0xff0000) >> 16; - dec_firmrev = (dec_sysid & 0xff00) >> 8; - dec_etc = dec_sysid & 0xff; - - /* - * FIXME: for now use the PROM to determine the CPU type - should - * probably just get the CPU to tell us. - */ - pmax_printf("System has an "); - switch(dec_cpunum) - { - case 0x82: - { - pmax_printf("R3000 CPU\n"); - tag_data_dummy = CPU_R3000A; - break; - } - case 0x84: - { - pmax_printf("R4000 CPU\n"); - /* FIXME: assume a plain R4000PC for now */ - tag_data_dummy = CPU_R4000PC; - break; - } - default: - { - pmax_printf("unknown CPU, code is %x\n", dec_cpunum); - /* FIXME: assume an R2000 for now */ - tag_data_dummy = CPU_R2000; - break; - } - } - /* Add the CPU type */ - (void)bi_TagAdd(tag_cputype, ULONGSIZE, &tag_data_dummy); - - pmax_printf("System has firmware type: "); - if (dec_firmrev == 2) - pmax_printf("TCF0\n"); - else - pmax_printf("TCF1\n"); - - pmax_printf("This DECStation is a: "); - switch(dec_systype) { - case 1: /* DS2100/3100 Pmax */ - pmax_printf("DS2100/3100\n"); - tag_data_dummy = MACH_DECSTATION; - break; - case 2: /* DS5000 3max */ - pmax_printf("DS5000\n"); - tag_data_dummy = MACH_DECSTATION; - break; - case 3: /* DS5000/100 3min */ - pmax_printf("DS5000/1x0\n"); - tag_data_dummy = MACH_DECSTATION; - break; - case 7: /* Personal DS5000/2x */ - pmax_printf("Personal DS5000/2x\n"); - tag_data_dummy = MACH_DECSTATION; - break; - default: - pmax_printf("unknown, id is: %x\n", dec_systype); - tag_data_dummy = MACH_UNKNOWN; - break; - } - - /* Add the machine type */ - (void)bi_TagAdd(tag_machtype, ULONGSIZE, &tag_data_dummy); - - /* Add the number of tlb entries */ - tag_data_dummy = 64; - (void)bi_TagAdd(tag_tlb_entries, ULONGSIZE, &tag_data_dummy); - - /* - * Add the instruction cache size - * FIXME: should determine this somehow - */ - tag_data_dummy = 0x100000; /* set it to 64K for now */ - (void)bi_TagAdd(tag_icache_size, ULONGSIZE, &tag_data_dummy); - mips_icache_size = tag_data_dummy; - - /* - * Add the data cache size - * FIXME: should determine this somehow - */ - tag_data_dummy = 0x100000; /* set it to 64K for now */ - (void)bi_TagAdd(tag_dcache_size, ULONGSIZE, &tag_data_dummy); - mips_dcache_size = tag_data_dummy; - - /* FIXME: should determine vram_base properly */ - tag_data_dummy = 0xa8000000; - (void)bi_TagAdd(tag_vram_base, ULONGSIZE, &tag_data_dummy); - - /* FIXME: dummy drive info tag */ - tag_data_dummy = 0; - (void)bi_TagAdd(tag_drive_info, ULONGSIZE, &tag_data_dummy); - - /* FIXME: do we need a dummy tag at the end? */ - tag_data_dummy = 0; - (void)bi_TagAdd(tag_dummy, 0, &tag_data_dummy); - - pmax_printf("Added tags\n"); -} /* dec_setup */ - -unsigned long dec_get_memory_size() -{ - int i, bitmap_size; - unsigned long mem_size = 0; - struct pmax_bitmap { - int pagesize; - unsigned char bitmap[64*1024*1024 - 4]; - } *bm; - - /* some free 64k */ - bm = (struct pmax_bitmap *)0x8002f000; - bitmap_size = pmax_getbitmap(bm); - - pmax_printf("Page size is: %x\n", bm->pagesize); - pmax_printf("Bitmap size is: %d bytes\n", bitmap_size); - - for (i = 0; i < bitmap_size; i++) - { - /* FIXME: very simplistically only add full sets of pages */ - if (bm->bitmap[i] == 0xff) - mem_size += (8 * bm->pagesize); - } - pmax_printf("Main memory size is: %d KB\n", (mem_size / 1024)); - return(mem_size); -} /* dec_get_memory_size */ - -unsigned char maxine_rtc_read_data(unsigned long addr) -{ - char *rtc = (char *)(PMAX_RTC_BASE); - return(rtc[addr * 4]); -} /* maxine_rtc_read_data */ - -void maxine_rtc_write_data(unsigned char data, unsigned long addr) -{ - char *rtc = (char *)(PMAX_RTC_BASE); - rtc[addr * 4] = data; -} /* maxine_rtc_read_data */ - |