setup.c
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上传日期:2013-04-10
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文件大小:29k
- /*
- * linux/arch/alpha/kernel/setup.c
- *
- * Copyright (C) 1995 Linus Torvalds
- */
- /* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */
- /*
- * Bootup setup stuff.
- */
- #include <linux/sched.h>
- #include <linux/kernel.h>
- #include <linux/mm.h>
- #include <linux/stddef.h>
- #include <linux/unistd.h>
- #include <linux/ptrace.h>
- #include <linux/slab.h>
- #include <linux/user.h>
- #include <linux/a.out.h>
- #include <linux/tty.h>
- #include <linux/delay.h>
- #include <linux/config.h> /* CONFIG_ALPHA_LCA etc */
- #include <linux/mc146818rtc.h>
- #include <linux/console.h>
- #include <linux/errno.h>
- #include <linux/init.h>
- #include <linux/string.h>
- #include <linux/ioport.h>
- #include <linux/bootmem.h>
- #include <linux/pci.h>
- #include <linux/seq_file.h>
- #ifdef CONFIG_BLK_DEV_INITRD
- #include <linux/blk.h>
- #endif
- #include <linux/notifier.h>
- extern struct notifier_block *panic_notifier_list;
- static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
- static struct notifier_block alpha_panic_block = {
- alpha_panic_event,
- NULL,
- INT_MAX /* try to do it first */
- };
- #include <asm/uaccess.h>
- #include <asm/pgtable.h>
- #include <asm/system.h>
- #include <asm/hwrpb.h>
- #include <asm/dma.h>
- #include <asm/io.h>
- #include <asm/mmu_context.h>
- #include <asm/console.h>
- #include "proto.h"
- #include "pci_impl.h"
- struct hwrpb_struct *hwrpb;
- unsigned long srm_hae;
- /* Which processor we booted from. */
- int boot_cpuid;
- /*
- * Using SRM callbacks for initial console output. This works from
- * setup_arch() time through the end of time_init(), as those places
- * are under our (Alpha) control.
- * "srmcons" specified in the boot command arguments allows us to
- * see kernel messages during the period of time before the true
- * console device is "registered" during console_init(). As of this
- * version (2.4.10), time_init() is the last Alpha-specific code
- * called before console_init(), so we put "unregister" code
- * there to prevent schizophrenic console behavior later... ;-}
- *
- * By default, OFF; set it with a bootcommand arg of "srmcons".
- */
- int srmcons_output = 0;
- /* Enforce a memory size limit; useful for testing. By default, none. */
- unsigned long mem_size_limit = 0;
- #ifdef CONFIG_ALPHA_GENERIC
- struct alpha_machine_vector alpha_mv;
- int alpha_using_srm;
- #endif
- unsigned char aux_device_present = 0xaa;
- #define N(a) (sizeof(a)/sizeof(a[0]))
- 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, long, char **, char **);
- 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
- };
- /*
- * The direct map I/O window, if any. This should be the same
- * for all busses, since it's used by virt_to_bus.
- */
- unsigned long __direct_map_base;
- unsigned long __direct_map_size;
- /*
- * 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(clipper_mv);
- WEAK(dp264_mv);
- WEAK(eb164_mv);
- WEAK(eb64p_mv);
- WEAK(eb66_mv);
- WEAK(eb66p_mv);
- WEAK(eiger_mv);
- WEAK(jensen_mv);
- WEAK(lx164_mv);
- WEAK(miata_mv);
- WEAK(mikasa_mv);
- WEAK(mikasa_primo_mv);
- WEAK(monet_mv);
- WEAK(nautilus_mv);
- WEAK(noname_mv);
- WEAK(noritake_mv);
- WEAK(noritake_primo_mv);
- WEAK(p2k_mv);
- WEAK(pc164_mv);
- WEAK(privateer_mv);
- WEAK(rawhide_mv);
- WEAK(ruffian_mv);
- WEAK(rx164_mv);
- WEAK(sable_mv);
- WEAK(sable_gamma_mv);
- WEAK(shark_mv);
- WEAK(sx164_mv);
- WEAK(takara_mv);
- WEAK(webbrick_mv);
- WEAK(wildfire_mv);
- WEAK(xl_mv);
- WEAK(xlt_mv);
- #undef WEAK
- /*
- * I/O resources inherited from PeeCees. Except for perhaps the
- * turbochannel alphas, everyone has these on some sort of SuperIO chip.
- *
- * ??? If this becomes less standard, move the struct out into the
- * machine vector.
- */
- static void __init
- reserve_std_resources(void)
- {
- static struct resource standard_io_resources[] = {
- { "rtc", -1, -1 },
- { "dma1", 0x00, 0x1f },
- { "pic1", 0x20, 0x3f },
- { "timer", 0x40, 0x5f },
- { "keyboard", 0x60, 0x6f },
- { "dma page reg", 0x80, 0x8f },
- { "pic2", 0xa0, 0xbf },
- { "dma2", 0xc0, 0xdf },
- };
- struct resource *io = &ioport_resource;
- long i;
- if (hose_head) {
- struct pci_controller *hose;
- for (hose = hose_head; hose; hose = hose->next)
- if (hose->index == 0) {
- io = hose->io_space;
- break;
- }
- }
- /* Fix up for the Jensen's queer RTC placement. */
- standard_io_resources[0].start = RTC_PORT(0);
- standard_io_resources[0].end = RTC_PORT(0) + 0x10;
- for (i = 0; i < N(standard_io_resources); ++i)
- request_resource(io, standard_io_resources+i);
- }
- #define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
- #define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
- #define PFN_PHYS(x) ((x) << PAGE_SHIFT)
- #define PFN_MAX PFN_DOWN(0x80000000)
- #define for_each_mem_cluster(memdesc, cluster, i)
- for ((cluster) = (memdesc)->cluster, (i) = 0;
- (i) < (memdesc)->numclusters; (i)++, (cluster)++)
- static unsigned long __init
- get_mem_size_limit(char *s)
- {
- unsigned long end = 0;
- char *from = s;
- end = simple_strtoul(from, &from, 0);
- if ( *from == 'K' || *from == 'k' ) {
- end = end << 10;
- from++;
- } else if ( *from == 'M' || *from == 'm' ) {
- end = end << 20;
- from++;
- } else if ( *from == 'G' || *from == 'g' ) {
- end = end << 30;
- from++;
- }
- return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
- }
- #ifndef CONFIG_DISCONTIGMEM
- static void __init
- setup_memory(void *kernel_end)
- {
- struct memclust_struct * cluster;
- struct memdesc_struct * memdesc;
- unsigned long start_kernel_pfn, end_kernel_pfn;
- unsigned long bootmap_size, bootmap_pages, bootmap_start;
- unsigned long start, end;
- int i;
- /* Find free clusters, and init and free the bootmem accordingly. */
- memdesc = (struct memdesc_struct *)
- (hwrpb->mddt_offset + (unsigned long) hwrpb);
- for_each_mem_cluster(memdesc, cluster, i) {
- printk("memcluster %d, usage %01lx, start %8lu, end %8lun",
- i, cluster->usage, cluster->start_pfn,
- cluster->start_pfn + cluster->numpages);
- /* Bit 0 is console/PALcode reserved. Bit 1 is
- non-volatile memory -- we might want to mark
- this for later. */
- if (cluster->usage & 3)
- continue;
- end = cluster->start_pfn + cluster->numpages;
- if (end > max_low_pfn)
- max_low_pfn = end;
- }
- if (mem_size_limit && max_low_pfn >= mem_size_limit)
- {
- printk("setup: forcing memory size to %ldK (from %ldK).n",
- mem_size_limit << (PAGE_SHIFT - 10),
- max_low_pfn << (PAGE_SHIFT - 10));
- max_low_pfn = mem_size_limit;
- }
- /* Find the bounds of kernel memory. */
- start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
- end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
- bootmap_start = -1;
- try_again:
- if (max_low_pfn <= end_kernel_pfn)
- panic("not enough memory to boot");
- /* We need to know how many physically contiguous pages
- we'll need for the bootmap. */
- bootmap_pages = bootmem_bootmap_pages(max_low_pfn);
- /* Now find a good region where to allocate the bootmap. */
- for_each_mem_cluster(memdesc, cluster, i) {
- if (cluster->usage & 3)
- continue;
- start = cluster->start_pfn;
- end = start + cluster->numpages;
- if (start >= max_low_pfn)
- continue;
- if (end > max_low_pfn)
- end = max_low_pfn;
- if (start < start_kernel_pfn) {
- if (end > end_kernel_pfn
- && end - end_kernel_pfn >= bootmap_pages) {
- bootmap_start = end_kernel_pfn;
- break;
- } else if (end > start_kernel_pfn)
- end = start_kernel_pfn;
- } else if (start < end_kernel_pfn)
- start = end_kernel_pfn;
- if (end - start >= bootmap_pages) {
- bootmap_start = start;
- break;
- }
- }
- if (bootmap_start == -1) {
- max_low_pfn >>= 1;
- goto try_again;
- }
- /* Allocate the bootmap and mark the whole MM as reserved. */
- bootmap_size = init_bootmem(bootmap_start, max_low_pfn);
- /* Mark the free regions. */
- for_each_mem_cluster(memdesc, cluster, i) {
- if (cluster->usage & 3)
- continue;
- start = cluster->start_pfn;
- end = cluster->start_pfn + cluster->numpages;
- if (start >= max_low_pfn)
- continue;
- if (end > max_low_pfn)
- end = max_low_pfn;
- if (start < start_kernel_pfn) {
- if (end > end_kernel_pfn) {
- free_bootmem(PFN_PHYS(start),
- (PFN_PHYS(start_kernel_pfn)
- - PFN_PHYS(start)));
- printk("freeing pages %ld:%ldn",
- start, start_kernel_pfn);
- start = end_kernel_pfn;
- } else if (end > start_kernel_pfn)
- end = start_kernel_pfn;
- } else if (start < end_kernel_pfn)
- start = end_kernel_pfn;
- if (start >= end)
- continue;
- free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
- printk("freeing pages %ld:%ldn", start, end);
- }
- /* Reserve the bootmap memory. */
- reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size);
- printk("reserving pages %ld:%ldn", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
- #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 ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
- printk("initrd extends beyond end of memory "
- "(0x%08lx > 0x%p)ndisabling initrdn",
- initrd_end,
- phys_to_virt(PFN_PHYS(max_low_pfn)));
- initrd_start = initrd_end = 0;
- } else {
- reserve_bootmem(virt_to_phys((void *)initrd_start),
- INITRD_SIZE);
- }
- }
- #endif /* CONFIG_BLK_DEV_INITRD */
- }
- #else
- extern void setup_memory(void *);
- #endif /* !CONFIG_DISCONTIGMEM */
- int __init
- page_is_ram(unsigned long pfn)
- {
- struct memclust_struct * cluster;
- struct memdesc_struct * memdesc;
- int i;
- memdesc = (struct memdesc_struct *)
- (hwrpb->mddt_offset + (unsigned long) hwrpb);
- for_each_mem_cluster(memdesc, cluster, i)
- {
- if (pfn >= cluster->start_pfn &&
- pfn < cluster->start_pfn + cluster->numpages) {
- return (cluster->usage & 3) ? 0 : 1;
- }
- }
- return 0;
- }
- #undef PFN_UP
- #undef PFN_DOWN
- #undef PFN_PHYS
- #undef PFN_MAX
- #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SRM)
- /*
- * Manage the SRM callbacks as a "console".
- */
- static struct console srmcons;
- void __init register_srm_console(void)
- {
- register_console(&srmcons);
- }
- void __init unregister_srm_console(void)
- {
- unregister_console(&srmcons);
- }
- static void srm_console_write(struct console *co, const char *s,
- unsigned count)
- {
- srm_printk(s);
- }
- static kdev_t srm_console_device(struct console *c)
- {
- /* Huh? */
- return MKDEV(TTY_MAJOR, 64 + c->index);
- }
- static int __init srm_console_setup(struct console *co, char *options)
- {
- return 1;
- }
- static struct console srmcons = {
- name: "srm0",
- write: srm_console_write,
- device: srm_console_device,
- setup: srm_console_setup,
- flags: CON_PRINTBUFFER | CON_ENABLED, /* fake it out */
- index: -1,
- };
- #else
- void __init register_srm_console(void)
- {
- }
- void __init unregister_srm_console(void)
- {
- }
- #endif
- void __init
- setup_arch(char **cmdline_p)
- {
- extern char _end[];
- struct alpha_machine_vector *vec = NULL;
- struct percpu_struct *cpu;
- char *type_name, *var_name, *p;
- void *kernel_end = _end; /* end of kernel */
- hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
- boot_cpuid = hard_smp_processor_id();
- /* Register a call for panic conditions. */
- notifier_chain_register(&panic_notifier_list, &alpha_panic_block);
- #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
- /* If we are using SRM, we want to allow callbacks
- as early as possible, so do this NOW, and then
- they should work immediately thereafter.
- */
- kernel_end = callback_init(kernel_end);
- /*
- * 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. */
- 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")) {
- if (strncmp(p, "alpha_mv=", 9) == 0) {
- vec = get_sysvec_byname(p+9);
- continue;
- }
- if (strncmp(p, "cycle=", 6) == 0) {
- est_cycle_freq = simple_strtol(p+6, NULL, 0);
- continue;
- }
- if (strncmp(p, "mem=", 4) == 0) {
- mem_size_limit = get_mem_size_limit(p+4);
- continue;
- }
- if (strncmp(p, "srmcons", 7) == 0) {
- srmcons_output = 1;
- continue;
- }
- }
- /* Replace the command line, now that we've killed it with strtok. */
- strcpy(command_line, saved_command_line);
- /* If we want SRM console printk echoing early, do it now. */
- if (alpha_using_srm && srmcons_output) {
- register_srm_console();
- }
- /*
- * Indentify and reconfigure for the current system.
- */
- cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
- get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
- cpu->type, &type_name, &var_name);
- if (*var_name == '0')
- var_name = "";
- if (!vec) {
- 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;
- }
-
- printk("Booting "
- #ifdef CONFIG_ALPHA_GENERIC
- "GENERIC "
- #endif
- "on %s%s%s using machine vector %s from %sn",
- type_name, (*var_name ? " variation " : ""),
- var_name, alpha_mv.vector_name,
- (alpha_using_srm ? "SRM" : "MILO"));
- printk("Command line: %sn", command_line);
- /*
- * Sync up 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. */
- setup_memory(kernel_end);
- /* Initialize the machine. Usually has to do with setting up
- DMA windows and the like. */
- if (alpha_mv.init_arch)
- alpha_mv.init_arch();
- /* Reserve standard resources. */
- reserve_std_resources();
- /*
- * 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 CONFIG_SMP
- setup_smp();
- #endif
- paging_init();
- }
- 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", "Eiger", "Titan"
- };
- static char unofficial_names[][8] = {"100", "Ruffian"};
- static char api_names[][16] = {"200", "Nautilus"};
- 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 titan_names[][16] = {
- "0", "Privateer"
- };
- static int titan_indices[] = {0,1};
- static char tsunami_names[][16] = {
- "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
- "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
- "Flying Clipper", "Shark"
- };
- static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
- static struct alpha_machine_vector * __init
- get_sysvec(long type, long variation, long cpu)
- {
- static struct alpha_machine_vector *systype_vecs[] __initdata =
- {
- 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. */
- &wildfire_mv, /* Wildfire */
- NULL, /* CUSCO */
- &eiger_mv, /* Eiger */
- NULL, /* Titan */
- };
- static struct alpha_machine_vector *unofficial_vecs[] __initdata =
- {
- NULL, /* 100 */
- &ruffian_mv,
- };
- static struct alpha_machine_vector *api_vecs[] __initdata =
- {
- NULL, /* 200 */
- &nautilus_mv,
- };
- static struct alpha_machine_vector *alcor_vecs[] __initdata =
- {
- &alcor_mv, &xlt_mv, &xlt_mv
- };
- static struct alpha_machine_vector *eb164_vecs[] __initdata =
- {
- &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
- };
- static struct alpha_machine_vector *eb64p_vecs[] __initdata =
- {
- &eb64p_mv,
- &cabriolet_mv,
- &cabriolet_mv /* AlphaPCI64 */
- };
- static struct alpha_machine_vector *eb66_vecs[] __initdata =
- {
- &eb66_mv,
- &eb66p_mv
- };
- static struct alpha_machine_vector *titan_vecs[] __initdata =
- {
- NULL,
- &privateer_mv, /* privateer */
- };
- static struct alpha_machine_vector *tsunami_vecs[] __initdata =
- {
- NULL,
- &dp264_mv, /* dp264 */
- &dp264_mv, /* warhol */
- &dp264_mv, /* windjammer */
- &monet_mv, /* monet */
- &clipper_mv, /* clipper */
- &dp264_mv, /* goldrush */
- &webbrick_mv, /* webbrick */
- &dp264_mv, /* catamaran */
- NULL, /* brisbane? */
- NULL, /* melbourne? */
- NULL, /* flying clipper? */
- &shark_mv, /* shark */
- };
- /* ??? 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_API_BIAS) &&
- (type - ST_API_BIAS) < N(api_vecs)) {
- vec = api_vecs[type - ST_API_BIAS];
- } 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;
- cpu &= 0xffffffff; /* make it usable */
- 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]];
- /* PC164 may show as EB164 variation with EV56 CPU,
- but, since no true EB164 had anything but EV5... */
- if (vec == &eb164_mv && cpu == EV56_CPU)
- vec = &pc164_mv;
- 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_TITAN:
- if (member < N(titan_indices))
- vec = titan_vecs[titan_indices[member]];
- break;
- case ST_DEC_TSUNAMI:
- if (member < N(tsunami_indices))
- vec = tsunami_vecs[tsunami_indices[member]];
- break;
- case ST_DEC_1000:
- if (cpu == EV5_CPU || cpu == EV56_CPU)
- vec = &mikasa_primo_mv;
- else
- vec = &mikasa_mv;
- break;
- case ST_DEC_NORITAKE:
- if (cpu == EV5_CPU || cpu == EV56_CPU)
- vec = &noritake_primo_mv;
- else
- vec = &noritake_mv;
- break;
- case ST_DEC_2100_A500:
- 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[] __initdata =
- {
- &alcor_mv,
- &alphabook1_mv,
- &avanti_mv,
- &cabriolet_mv,
- &clipper_mv,
- &dp264_mv,
- &eb164_mv,
- &eb64p_mv,
- &eb66_mv,
- &eb66p_mv,
- &eiger_mv,
- &jensen_mv,
- &lx164_mv,
- &miata_mv,
- &mikasa_mv,
- &mikasa_primo_mv,
- &monet_mv,
- &nautilus_mv,
- &noname_mv,
- &noritake_mv,
- &noritake_primo_mv,
- &p2k_mv,
- &pc164_mv,
- &privateer_mv,
- &rawhide_mv,
- &ruffian_mv,
- &rx164_mv,
- &sable_mv,
- &sable_gamma_mv,
- &shark_mv,
- &sx164_mv,
- &takara_mv,
- &webbrick_mv,
- &wildfire_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, long cpu,
- 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_API_BIAS) &&
- (type - ST_API_BIAS) < N(api_names)) {
- *type_name = api_names[type - ST_API_BIAS];
- } 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 */
- cpu &= 0xffffffff; /* make it usable */
- 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]];
- /* PC164 may show as EB164 variation, but with EV56 CPU,
- so, since no true EB164 had anything but EV5... */
- if (eb164_indices[member] == 0 && cpu == EV56_CPU)
- *variation_name = eb164_names[1]; /* make it PC164 */
- 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_TITAN:
- if (member < N(titan_indices))
- *variation_name = titan_names[titan_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)));
- }
- }
- static int
- get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
- {
- struct percpu_struct *cpu;
- int i, count = 0;
- for (i = 0; i < num; i++) {
- cpu = (struct percpu_struct *)
- ((char *)cpubase + i*hwrpb->processor_size);
- if ((cpu->flags & 0x1cc) == 0x1cc)
- count++;
- }
- return count;
- }
- static int
- show_cpuinfo(struct seq_file *f, void *slot)
- {
- 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", "EV68CB", "EV68AL",
- "EV68CX", "EV7", "EV79", "EV69"
- };
- struct percpu_struct *cpu = slot;
- unsigned int cpu_index;
- char *cpu_name;
- char *systype_name;
- char *sysvariation_name;
- int nr_processors;
- 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,
- cpu->type, &systype_name, &sysvariation_name);
- nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
- seq_printf(f, "cputtt: Alphan"
- "cpu modeltt: %sn"
- "cpu variationtt: %ldn"
- "cpu revisiontt: %ldn"
- "cpu serial numbert: %sn"
- "system typett: %sn"
- "system variationt: %sn"
- "system revisiontt: %ldn"
- "system serial numbert: %sn"
- "cycle frequency [Hz]t: %lu %sn"
- "timer frequency [Hz]t: %lu.%02lun"
- "page size [bytes]t: %ldn"
- "phys. address bitst: %ldn"
- "max. addr. space #t: %ldn"
- "BogoMIPStt: %lu.%02lun"
- "kernel unaligned acct: %ld (pc=%lx,va=%lx)n"
- "user unaligned acct: %ld (pc=%lx,va=%lx)n"
- "platform stringtt: %sn"
- "cpus detectedtt: %dn",
- cpu_name, cpu->variation, cpu->revision,
- (char*)cpu->serial_no,
- systype_name, sysvariation_name, hwrpb->sys_revision,
- (char*)hwrpb->ssn,
- est_cycle_freq ? : hwrpb->cycle_freq,
- est_cycle_freq ? "est." : "",
- hwrpb->intr_freq / 4096,
- (100 * hwrpb->intr_freq / 4096) % 100,
- hwrpb->pagesize,
- hwrpb->pa_bits,
- hwrpb->max_asn,
- loops_per_jiffy / (500000/HZ),
- (loops_per_jiffy / (5000/HZ)) % 100,
- unaligned[0].count, unaligned[0].pc, unaligned[0].va,
- unaligned[1].count, unaligned[1].pc, unaligned[1].va,
- platform_string(), nr_processors);
- #ifdef CONFIG_SMP
- seq_printf(f, "cpus activett: %dn"
- "cpu active masktt: %016lxn",
- smp_num_cpus, cpu_present_mask);
- #endif
- return 0;
- }
- /*
- * We show only CPU #0 info.
- */
- static void *
- c_start(struct seq_file *f, loff_t *pos)
- {
- return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
- }
- static void *
- c_next(struct seq_file *f, void *v, loff_t *pos)
- {
- return NULL;
- }
- static void
- c_stop(struct seq_file *f, void *v)
- {
- }
- struct seq_operations cpuinfo_op = {
- start: c_start,
- next: c_next,
- stop: c_stop,
- show: show_cpuinfo,
- };
- static int alpha_panic_event(struct notifier_block *this,
- unsigned long event,
- void *ptr)
- {
- #if 1
- /* FIXME FIXME FIXME */
- /* If we are using SRM and serial console, just hard halt here. */
- if (alpha_using_srm && srmcons_output)
- __halt();
- #endif
- return NOTIFY_DONE;
- }