/* * linux/arch/alpha/kernel/setup.c * * Copyright (C) 1995 Linus Torvalds */ /* * Bootup setup stuff. */ #include #include #include #include #include #include #include #include #include #include #include #include /* CONFIG_ALPHA_LCA etc */ #include #include #include #include #include #ifdef CONFIG_RTC #include #endif #ifdef CONFIG_BLK_DEV_INITRD #include #endif #include #include #include #include #include #include #include "proto.h" struct hwrpb_struct *hwrpb; unsigned long srm_hae; #ifdef CONFIG_ALPHA_GENERIC struct alpha_machine_vector alpha_mv; int alpha_using_srm, alpha_use_srm_setup; #endif unsigned char aux_device_present = 0xaa; #define N(a) (sizeof(a)/sizeof(a[0])) static unsigned long find_end_memory(void); static struct alpha_machine_vector *get_sysvec(long, long, long); static struct alpha_machine_vector *get_sysvec_byname(const char *); static void get_sysnames(long, long, char **, char **); /* * This is setup by the secondary bootstrap loader. Because * the zero page is zeroed out as soon as the vm system is * initialized, we need to copy things out into a more permanent * place. */ #define PARAM ZERO_PAGE #define COMMAND_LINE ((char*)(PARAM + 0x0000)) #define COMMAND_LINE_SIZE 256 #define INITRD_START (*(unsigned long *) (PARAM+0x100)) #define INITRD_SIZE (*(unsigned long *) (PARAM+0x108)) static char command_line[COMMAND_LINE_SIZE]; char saved_command_line[COMMAND_LINE_SIZE]; /* * The format of "screen_info" is strange, and due to early * i386-setup code. This is just enough to make the console * code think we're on a VGA color display. */ struct screen_info screen_info = { orig_x: 0, orig_y: 25, orig_video_cols: 80, orig_video_lines: 25, orig_video_isVGA: 1, orig_video_points: 16 }; /* * Declare all of the machine vectors. */ /* GCC 2.7.2 (on alpha at least) is lame. It does not support either __attribute__((weak)) or #pragma weak. Bypass it and talk directly to the assembler. */ #define WEAK(X) \ extern struct alpha_machine_vector X; \ asm(".weak "#X) WEAK(alcor_mv); WEAK(alphabook1_mv); WEAK(avanti_mv); WEAK(cabriolet_mv); WEAK(dp264_mv); WEAK(eb164_mv); WEAK(eb64p_mv); WEAK(eb66_mv); WEAK(eb66p_mv); WEAK(jensen_mv); WEAK(lx164_mv); WEAK(miata_mv); WEAK(mikasa_mv); WEAK(mikasa_primo_mv); WEAK(monet_mv); WEAK(noname_mv); WEAK(noritake_mv); WEAK(noritake_primo_mv); WEAK(p2k_mv); WEAK(pc164_mv); WEAK(rawhide_mv); WEAK(ruffian_mv); WEAK(rx164_mv); WEAK(sable_mv); WEAK(sable_gamma_mv); WEAK(sx164_mv); WEAK(takara_mv); WEAK(webbrick_mv); WEAK(xl_mv); WEAK(xlt_mv); #undef WEAK void __init setup_arch(char **cmdline_p, unsigned long * memory_start_p, unsigned long * memory_end_p) { extern char _end[]; struct alpha_machine_vector *vec = NULL; struct percpu_struct *cpu; char *type_name, *var_name, *p; hwrpb = (struct hwrpb_struct*)(IDENT_ADDR + INIT_HWRPB->phys_addr); /* * Locate the command line. */ /* Hack for Jensen... since we're restricted to 8 or 16 chars for boot flags depending on the boot mode, we need some shorthand. This should do for installation. Later we'll add other abbreviations as well... */ if (strcmp(COMMAND_LINE, "INSTALL") == 0) { strcpy(command_line, "root=/dev/fd0 load_ramdisk=1"); } else { strncpy(command_line, COMMAND_LINE, sizeof command_line); command_line[sizeof(command_line)-1] = 0; } strcpy(saved_command_line, command_line); *cmdline_p = command_line; /* * Process command-line arguments. */ for (p = strtok(command_line, " \t"); p ; p = strtok(NULL, " \t")) { #ifndef alpha_use_srm_setup /* Allow a command-line option to respect the SRM's configuration. */ if (strncmp(p, "srm_setup=", 10) == 0) { alpha_use_srm_setup = (p[10] != '0'); continue; } #endif if (strncmp(p, "alpha_mv=", 9) == 0) { vec = get_sysvec_byname(p+9); continue; } } /* Replace the command line, not that we've killed it with strtok. */ strcpy(command_line, saved_command_line); /* * Indentify and reconfigure for the current system. */ get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, &type_name, &var_name); if (*var_name == '0') var_name = ""; if (!vec) { cpu = (struct percpu_struct*) ((char*)hwrpb + hwrpb->processor_offset); vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation, cpu->type); } if (!vec) { panic("Unsupported system type: %s%s%s (%ld %ld)\n", type_name, (*var_name ? " variation " : ""), var_name, hwrpb->sys_type, hwrpb->sys_variation); } if (vec != &alpha_mv) alpha_mv = *vec; #ifdef CONFIG_ALPHA_GENERIC /* Assume that we've booted from SRM if we havn't booted from MILO. Detect the later by looking for "MILO" in the system serial nr. */ alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0; #endif printk("Booting on %s%s%s using machine vector %s\n", type_name, (*var_name ? " variation " : ""), var_name, alpha_mv.vector_name); printk("Command line: %s\n", command_line); /* * Sync with the HAE */ /* Save the SRM's current value for restoration. */ srm_hae = *alpha_mv.hae_register; __set_hae(alpha_mv.hae_cache); /* Reset enable correctable error reports. */ wrmces(0x7); /* Find our memory. */ *memory_end_p = find_end_memory(); *memory_start_p = (unsigned long) _end; #ifdef CONFIG_BLK_DEV_INITRD initrd_start = INITRD_START; if (initrd_start) { initrd_end = initrd_start+INITRD_SIZE; printk("Initial ramdisk at: 0x%p (%lu bytes)\n", (void *) initrd_start, INITRD_SIZE); if (initrd_end > *memory_end_p) { printk("initrd extends beyond end of memory " "(0x%08lx > 0x%08lx)\ndisabling initrd\n", initrd_end, (unsigned long) memory_end_p); initrd_start = initrd_end = 0; } } #endif /* Initialize the machine. Usually has to do with setting up DMA windows and the like. */ if (alpha_mv.init_arch) alpha_mv.init_arch(memory_start_p, memory_end_p); /* Initialize the timers. */ /* ??? There is some circumstantial evidence that this needs to be done now rather than later in time_init, which would be more natural. Someone please explain or refute. */ #if defined(CONFIG_RTC) rtc_init_pit(); #else alpha_mv.init_pit(); #endif /* * Give us a default console. TGA users will see nothing until * chr_dev_init is called, rather late in the boot sequence. */ #ifdef CONFIG_VT #if defined(CONFIG_VGA_CONSOLE) conswitchp = &vga_con; #elif defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; #endif #endif /* Default root filesystem to sda2. */ ROOT_DEV = to_kdev_t(0x0802); /* * Check ASN in HWRPB for validity, report if bad. * FIXME: how was this failing? Should we trust it instead, * and copy the value into alpha_mv.max_asn? */ if (hwrpb->max_asn != MAX_ASN) { printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn); } /* * Identify the flock of penguins. */ #ifdef __SMP__ setup_smp(); #endif } static unsigned long __init find_end_memory(void) { int i; unsigned long high = 0; struct memclust_struct * cluster; struct memdesc_struct * memdesc; memdesc = (struct memdesc_struct *) (INIT_HWRPB->mddt_offset + (unsigned long) INIT_HWRPB); cluster = memdesc->cluster; for (i = memdesc->numclusters ; i > 0; i--, cluster++) { unsigned long tmp; tmp = (cluster->start_pfn + cluster->numpages) << PAGE_SHIFT; if (tmp > high) high = tmp; } /* Round it up to an even number of pages. */ high = (high + PAGE_SIZE) & (PAGE_MASK*2); return PAGE_OFFSET + high; } static char sys_unknown[] = "Unknown"; static char systype_names[][16] = { "0", "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen", "Pelican", "Morgan", "Sable", "Medulla", "Noname", "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind", "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1", "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake", "Cortex", "29", "Miata", "XXM", "Takara", "Yukon", "Tsunami", "Wildfire", "CUSCO" }; static char unofficial_names[][8] = {"100", "Ruffian"}; static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"}; static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4}; static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"}; static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2}; static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"}; static int eb64p_indices[] = {0,0,1,2}; static char eb66_names[][8] = {"EB66", "EB66+"}; static int eb66_indices[] = {0,0,1}; static char rawhide_names[][16] = { "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci" }; static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4}; static char tsunami_names[][16] = { "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper", "Goldrush", "Webbrick", "Catamaran" }; static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8}; static struct alpha_machine_vector * __init get_sysvec(long type, long variation, long cpu) { static struct alpha_machine_vector *systype_vecs[] __initlocaldata = { NULL, /* 0 */ NULL, /* ADU */ NULL, /* Cobra */ NULL, /* Ruby */ NULL, /* Flamingo */ NULL, /* Mannequin */ &jensen_mv, NULL, /* Pelican */ NULL, /* Morgan */ NULL, /* Sable -- see below. */ NULL, /* Medulla */ &noname_mv, NULL, /* Turbolaser */ &avanti_mv, NULL, /* Mustang */ &alcor_mv, /* Alcor, Bret, Maverick. */ NULL, /* Tradewind */ NULL, /* Mikasa -- see below. */ NULL, /* EB64 */ NULL, /* EB66 -- see variation. */ NULL, /* EB64+ -- see variation. */ &alphabook1_mv, &rawhide_mv, NULL, /* K2 */ NULL, /* Lynx */ &xl_mv, NULL, /* EB164 -- see variation. */ NULL, /* Noritake -- see below. */ NULL, /* Cortex */ NULL, /* 29 */ &miata_mv, NULL, /* XXM */ &takara_mv, NULL, /* Yukon */ NULL, /* Tsunami -- see variation. */ NULL, /* Wildfire */ NULL, /* CUSCO */ }; static struct alpha_machine_vector *unofficial_vecs[] __initlocaldata = { NULL, /* 100 */ &ruffian_mv, }; static struct alpha_machine_vector *alcor_vecs[] __initlocaldata = { &alcor_mv, &xlt_mv, &xlt_mv }; static struct alpha_machine_vector *eb164_vecs[] __initlocaldata = { &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv }; static struct alpha_machine_vector *eb64p_vecs[] __initlocaldata = { &eb64p_mv, &cabriolet_mv, NULL /* AlphaPCI64 */ }; static struct alpha_machine_vector *eb66_vecs[] __initlocaldata = { &eb66_mv, &eb66p_mv }; static struct alpha_machine_vector *tsunami_vecs[] __initlocaldata = { NULL, &dp264_mv, /* dp164 */ &dp264_mv, /* warhol */ &dp264_mv, /* windjammer */ &monet_mv, /* monet */ &dp264_mv, /* clipper */ &dp264_mv, /* goldrush */ &webbrick_mv, /* webbrick */ &dp264_mv, /* catamaran */ }; /* ??? Do we need to distinguish between Rawhides? */ struct alpha_machine_vector *vec; /* Restore real CABRIO and EB66+ family names, ie EB64+ and EB66 */ if (type < 0) type = -type; /* Search the system tables first... */ vec = NULL; if (type < N(systype_vecs)) { vec = systype_vecs[type]; } else if ((type > ST_UNOFFICIAL_BIAS) && (type - ST_UNOFFICIAL_BIAS) < N(unofficial_vecs)) { vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS]; } /* If we've not found one, try for a variation. */ if (!vec) { /* Member ID is a bit-field. */ long member = (variation >> 10) & 0x3f; switch (type) { case ST_DEC_ALCOR: if (member < N(alcor_indices)) vec = alcor_vecs[alcor_indices[member]]; break; case ST_DEC_EB164: if (member < N(eb164_indices)) vec = eb164_vecs[eb164_indices[member]]; break; case ST_DEC_EB64P: if (member < N(eb64p_indices)) vec = eb64p_vecs[eb64p_indices[member]]; break; case ST_DEC_EB66: if (member < N(eb66_indices)) vec = eb66_vecs[eb66_indices[member]]; break; case ST_DEC_TSUNAMI: if (member < N(tsunami_indices)) vec = tsunami_vecs[tsunami_indices[member]]; break; case ST_DEC_1000: cpu &= 0xffffffff; if (cpu == EV5_CPU || cpu == EV56_CPU) vec = &mikasa_primo_mv; else vec = &mikasa_mv; break; case ST_DEC_NORITAKE: cpu &= 0xffffffff; if (cpu == EV5_CPU || cpu == EV56_CPU) vec = &noritake_primo_mv; else vec = &noritake_mv; break; case ST_DEC_2100_A500: cpu &= 0xffffffff; if (cpu == EV5_CPU || cpu == EV56_CPU) vec = &sable_gamma_mv; else vec = &sable_mv; break; } } return vec; } static struct alpha_machine_vector * __init get_sysvec_byname(const char *name) { static struct alpha_machine_vector *all_vecs[] __initlocaldata = { &alcor_mv, &alphabook1_mv, &avanti_mv, &cabriolet_mv, &dp264_mv, &eb164_mv, &eb64p_mv, &eb66_mv, &eb66p_mv, &jensen_mv, &lx164_mv, &miata_mv, &mikasa_mv, &mikasa_primo_mv, &monet_mv, &noname_mv, &noritake_mv, &noritake_primo_mv, &p2k_mv, &pc164_mv, &rawhide_mv, &ruffian_mv, &rx164_mv, &sable_mv, &sable_gamma_mv, &sx164_mv, &takara_mv, &webbrick_mv, &xl_mv, &xlt_mv }; int i, n = sizeof(all_vecs)/sizeof(*all_vecs); for (i = 0; i < n; ++i) { struct alpha_machine_vector *mv = all_vecs[i]; if (strcasecmp(mv->vector_name, name) == 0) return mv; } return NULL; } static void get_sysnames(long type, long variation, char **type_name, char **variation_name) { long member; /* Restore real CABRIO and EB66+ family names, ie EB64+ and EB66 */ if (type < 0) type = -type; /* If not in the tables, make it UNKNOWN, else set type name to family */ if (type < N(systype_names)) { *type_name = systype_names[type]; } else if ((type > ST_UNOFFICIAL_BIAS) && (type - ST_UNOFFICIAL_BIAS) < N(unofficial_names)) { *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS]; } else { *type_name = sys_unknown; *variation_name = sys_unknown; return; } /* Set variation to "0"; if variation is zero, done */ *variation_name = systype_names[0]; if (variation == 0) { return; } member = (variation >> 10) & 0x3f; /* member ID is a bit-field */ switch (type) { /* select by family */ default: /* default to variation "0" for now */ break; case ST_DEC_EB164: if (member < N(eb164_indices)) *variation_name = eb164_names[eb164_indices[member]]; break; case ST_DEC_ALCOR: if (member < N(alcor_indices)) *variation_name = alcor_names[alcor_indices[member]]; break; case ST_DEC_EB64P: if (member < N(eb64p_indices)) *variation_name = eb64p_names[eb64p_indices[member]]; break; case ST_DEC_EB66: if (member < N(eb66_indices)) *variation_name = eb66_names[eb66_indices[member]]; break; case ST_DEC_RAWHIDE: if (member < N(rawhide_indices)) *variation_name = rawhide_names[rawhide_indices[member]]; break; case ST_DEC_TSUNAMI: if (member < N(tsunami_indices)) *variation_name = tsunami_names[tsunami_indices[member]]; break; } } /* * A change was made to the HWRPB via an ECO and the following code * tracks a part of the ECO. In HWRPB versions less than 5, the ECO * was not implemented in the console firmware. If it's revision 5 or * greater we can get the name of the platform as an ASCII string from * the HWRPB. That's what this function does. It checks the revision * level and if the string is in the HWRPB it returns the address of * the string--a pointer to the name of the platform. * * Returns: * - Pointer to a ASCII string if it's in the HWRPB * - Pointer to a blank string if the data is not in the HWRPB. */ static char * platform_string(void) { struct dsr_struct *dsr; static char unk_system_string[] = "N/A"; /* Go to the console for the string pointer. * If the rpb_vers is not 5 or greater the rpb * is old and does not have this data in it. */ if (hwrpb->revision < 5) return (unk_system_string); else { /* The Dynamic System Recognition struct * has the system platform name starting * after the character count of the string. */ dsr = ((struct dsr_struct *) ((char *)hwrpb + hwrpb->dsr_offset)); return ((char *)dsr + (dsr->sysname_off + sizeof(long))); } } /* * BUFFER is PAGE_SIZE bytes long. */ int get_cpuinfo(char *buffer) { extern struct unaligned_stat { unsigned long count, va, pc; } unaligned[2]; static char cpu_names[][8] = { "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56", "EV6", "PCA56", "PCA57", "EV67" }; struct percpu_struct *cpu; unsigned int cpu_index; char *cpu_name; char *systype_name; char *sysvariation_name; int len; cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset); cpu_index = (unsigned) (cpu->type - 1); cpu_name = "Unknown"; if (cpu_index < N(cpu_names)) cpu_name = cpu_names[cpu_index]; get_sysnames(hwrpb->sys_type, hwrpb->sys_variation, &systype_name, &sysvariation_name); len = sprintf(buffer, "cpu\t\t\t: Alpha\n" "cpu model\t\t: %s\n" "cpu variation\t\t: %ld\n" "cpu revision\t\t: %ld\n" "cpu serial number\t: %s\n" "system type\t\t: %s\n" "system variation\t: %s\n" "system revision\t\t: %ld\n" "system serial number\t: %s\n" "cycle frequency [Hz]\t: %lu %s\n" "timer frequency [Hz]\t: %lu.%02lu\n" "page size [bytes]\t: %ld\n" "phys. address bits\t: %ld\n" "max. addr. space #\t: %ld\n" "BogoMIPS\t\t: %lu.%02lu\n" "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n" "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n" "platform string\t\t: %s\n", cpu_name, cpu->variation, cpu->revision, (char*)cpu->serial_no, systype_name, sysvariation_name, hwrpb->sys_revision, (char*)hwrpb->ssn, hwrpb->cycle_freq ? : est_cycle_freq, hwrpb->cycle_freq ? "" : "est.", hwrpb->intr_freq / 4096, (100 * hwrpb->intr_freq / 4096) % 100, hwrpb->pagesize, hwrpb->pa_bits, hwrpb->max_asn, loops_per_sec / 500000, (loops_per_sec / 5000) % 100, unaligned[0].count, unaligned[0].pc, unaligned[0].va, unaligned[1].count, unaligned[1].pc, unaligned[1].va, platform_string()); #ifdef __SMP__ len += smp_info(buffer+len); #endif return len; }