| /* |
| * 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/platform_device.h> |
| #include <linux/bootmem.h> |
| #include <linux/pci.h> |
| #include <linux/seq_file.h> |
| #include <linux/root_dev.h> |
| #include <linux/initrd.h> |
| #include <linux/eisa.h> |
| #ifdef CONFIG_MAGIC_SYSRQ |
| #include <linux/sysrq.h> |
| #include <linux/reboot.h> |
| #endif |
| #include <linux/notifier.h> |
| #include <asm/setup.h> |
| #include <asm/io.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; |
| |
| int alpha_l1i_cacheshape; |
| int alpha_l1d_cacheshape; |
| int alpha_l2_cacheshape; |
| int alpha_l3_cacheshape; |
| |
| #ifdef CONFIG_VERBOSE_MCHECK |
| /* 0=minimum, 1=verbose, 2=all */ |
| /* These can be overridden via the command line, ie "verbose_mcheck=2") */ |
| unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON; |
| #endif |
| |
| /* 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 (2.5.59), console_init() will call |
| * disable_early_printk() as the last action before initializing |
| * the console drivers. That's the last possible time srmcons can be |
| * unregistered without interfering with console behavior. |
| * |
| * By default, OFF; set it with a bootcommand arg of "srmcons" or |
| * "console=srm". The meaning of these two args is: |
| * "srmcons" - early callback prints |
| * "console=srm" - full callback based console, including early prints |
| */ |
| int srmcons_output = 0; |
| |
| /* Enforce a memory size limit; useful for testing. By default, none. */ |
| unsigned long mem_size_limit = 0; |
| |
| /* Set AGP GART window size (0 means disabled). */ |
| unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE; |
| |
| #ifdef CONFIG_ALPHA_GENERIC |
| struct alpha_machine_vector alpha_mv; |
| int alpha_using_srm; |
| #endif |
| |
| #define N(a) (sizeof(a)/sizeof(a[0])) |
| |
| static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long, |
| unsigned long); |
| static struct alpha_machine_vector *get_sysvec_byname(const char *); |
| static void get_sysnames(unsigned long, unsigned long, unsigned long, |
| char **, char **); |
| static void determine_cpu_caches (unsigned int); |
| |
| static char 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(lynx_mv); |
| WEAK(marvel_ev7_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(titan_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[] = { |
| { .name = "rtc", .start = -1, .end = -1 }, |
| { .name = "dma1", .start = 0x00, .end = 0x1f }, |
| { .name = "pic1", .start = 0x20, .end = 0x3f }, |
| { .name = "timer", .start = 0x40, .end = 0x5f }, |
| { .name = "keyboard", .start = 0x60, .end = 0x6f }, |
| { .name = "dma page reg", .start = 0x80, .end = 0x8f }, |
| { .name = "pic2", .start = 0xa0, .end = 0xbf }, |
| { .name = "dma2", .start = 0xc0, .end = 0xdf }, |
| }; |
| |
| struct resource *io = &ioport_resource; |
| size_t 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. */ |
| } |
| |
| #ifdef CONFIG_BLK_DEV_INITRD |
| void * __init |
| move_initrd(unsigned long mem_limit) |
| { |
| void *start; |
| unsigned long size; |
| |
| size = initrd_end - initrd_start; |
| start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0); |
| if (!start || __pa(start) + size > mem_limit) { |
| initrd_start = initrd_end = 0; |
| return NULL; |
| } |
| memmove(start, (void *)initrd_start, size); |
| initrd_start = (unsigned long)start; |
| initrd_end = initrd_start + size; |
| printk("initrd moved to %p\n", start); |
| return start; |
| } |
| #endif |
| |
| #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; |
| unsigned long 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 %lu, usage %01lx, start %8lu, end %8lu\n", |
| 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; |
| } |
| |
| /* |
| * Except for the NUMA systems (wildfire, marvel) all of the |
| * Alpha systems we run on support 32GB of memory or less. |
| * Since the NUMA systems introduce large holes in memory addressing, |
| * we can get into a situation where there is not enough contiguous |
| * memory for the memory map. |
| * |
| * Limit memory to the first 32GB to limit the NUMA systems to |
| * memory on their first node (wildfire) or 2 (marvel) to avoid |
| * not being able to produce the memory map. In order to access |
| * all of the memory on the NUMA systems, build with discontiguous |
| * memory support. |
| * |
| * If the user specified a memory limit, let that memory limit stand. |
| */ |
| if (!mem_size_limit) |
| mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT; |
| |
| 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 == ~0UL) { |
| 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:%ld\n", |
| 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:%ld\n", start, end); |
| } |
| |
| /* Reserve the bootmap memory. */ |
| reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size); |
| printk("reserving pages %ld:%ld\n", 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))) { |
| if (!move_initrd(PFN_PHYS(max_low_pfn))) |
| printk("initrd extends beyond end of memory " |
| "(0x%08lx > 0x%p)\ndisabling initrd\n", |
| initrd_end, |
| phys_to_virt(PFN_PHYS(max_low_pfn))); |
| } 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; |
| unsigned long 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 |
| |
| 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 */ |
| char *args = command_line; |
| |
| hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr); |
| boot_cpuid = hard_smp_processor_id(); |
| |
| /* |
| * Pre-process the system type to make sure it will be valid. |
| * |
| * This may restore real CABRIO and EB66+ family names, ie |
| * EB64+ and EB66. |
| * |
| * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series) |
| * and AS1200 (DIGITAL Server 5000 series) have the type as |
| * the negative of the real one. |
| */ |
| if ((long)hwrpb->sys_type < 0) { |
| hwrpb->sys_type = -((long)hwrpb->sys_type); |
| hwrpb_update_checksum(hwrpb); |
| } |
| |
| /* 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 haven'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) { |
| strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line); |
| } else { |
| strlcpy(command_line, COMMAND_LINE, sizeof command_line); |
| } |
| strcpy(saved_command_line, command_line); |
| *cmdline_p = command_line; |
| |
| /* |
| * Process command-line arguments. |
| */ |
| while ((p = strsep(&args, " \t")) != NULL) { |
| if (!*p) continue; |
| 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; |
| } |
| if (strncmp(p, "console=srm", 11) == 0) { |
| srmcons_output |= 2; |
| continue; |
| } |
| if (strncmp(p, "gartsize=", 9) == 0) { |
| alpha_agpgart_size = |
| get_mem_size_limit(p+9) << PAGE_SHIFT; |
| continue; |
| } |
| #ifdef CONFIG_VERBOSE_MCHECK |
| if (strncmp(p, "verbose_mcheck=", 15) == 0) { |
| alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0); |
| continue; |
| } |
| #endif |
| } |
| |
| /* Replace the command line, now that we've killed it with strsep. */ |
| 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(); |
| |
| /* |
| * If "console=srm" was specified, clear the srmcons_output |
| * flag now so that time.c won't unregister_srm_console |
| */ |
| if (srmcons_output & 2) |
| srmcons_output = 0; |
| } |
| |
| #ifdef CONFIG_MAGIC_SYSRQ |
| /* If we're using SRM, make sysrq-b halt back to the prom, |
| not auto-reboot. */ |
| if (alpha_using_srm) { |
| struct sysrq_key_op *op = __sysrq_get_key_op('b'); |
| op->handler = (void *) machine_halt; |
| } |
| #endif |
| |
| /* |
| * Identify 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 %s\n", |
| type_name, (*var_name ? " variation " : ""), |
| var_name, alpha_mv.vector_name, |
| (alpha_using_srm ? "SRM" : "MILO")); |
| |
| printk("Major Options: " |
| #ifdef CONFIG_SMP |
| "SMP " |
| #endif |
| #ifdef CONFIG_ALPHA_EV56 |
| "EV56 " |
| #endif |
| #ifdef CONFIG_ALPHA_EV67 |
| "EV67 " |
| #endif |
| #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS |
| "LEGACY_START " |
| #endif |
| #ifdef CONFIG_VERBOSE_MCHECK |
| "VERBOSE_MCHECK " |
| #endif |
| |
| #ifdef CONFIG_DISCONTIGMEM |
| "DISCONTIGMEM " |
| #ifdef CONFIG_NUMA |
| "NUMA " |
| #endif |
| #endif |
| |
| #ifdef CONFIG_DEBUG_SPINLOCK |
| "DEBUG_SPINLOCK " |
| #endif |
| #ifdef CONFIG_MAGIC_SYSRQ |
| "MAGIC_SYSRQ " |
| #endif |
| "\n"); |
| |
| printk("Command line: %s\n", 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); |
| |
| /* First guess at cpu cache sizes. Do this before init_arch. */ |
| determine_cpu_caches(cpu->type); |
| |
| /* 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 = Root_SDA2; |
| |
| #ifdef CONFIG_EISA |
| /* FIXME: only set this when we actually have EISA in this box? */ |
| EISA_bus = 1; |
| #endif |
| |
| /* |
| * 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(); |
| } |
| |
| void __init |
| disable_early_printk(void) |
| { |
| if (alpha_using_srm && srmcons_output) { |
| unregister_srm_console(); |
| srmcons_output = 0; |
| } |
| } |
| |
| 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", "Marvel" |
| }; |
| |
| 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 marvel_names[][16] = { |
| "Marvel/EV7" |
| }; |
| static int marvel_indices[] = { 0 }; |
| |
| 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] = { |
| "DEFAULT", "Privateer", "Falcon", "Granite" |
| }; |
| static int titan_indices[] = {0,1,2,2,3}; |
| |
| 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(unsigned long type, unsigned long variation, unsigned 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 */ |
| NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */ |
| NULL, /* Tradewind */ |
| NULL, /* Mikasa -- see below. */ |
| NULL, /* EB64 */ |
| NULL, /* EB66 -- see variation. */ |
| NULL, /* EB64+ -- see variation. */ |
| &alphabook1_mv, |
| &rawhide_mv, |
| NULL, /* K2 */ |
| &lynx_mv, /* 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 */ |
| NULL, /* Marvel */ |
| }; |
| |
| 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 *marvel_vecs[] __initdata = |
| { |
| &marvel_ev7_mv, |
| }; |
| |
| static struct alpha_machine_vector *titan_vecs[] __initdata = |
| { |
| &titan_mv, /* default */ |
| &privateer_mv, /* privateer */ |
| &titan_mv, /* falcon */ |
| &privateer_mv, /* granite */ |
| }; |
| |
| 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; |
| |
| /* 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. */ |
| unsigned 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_MARVEL: |
| if (member < N(marvel_indices)) |
| vec = marvel_vecs[marvel_indices[member]]; |
| break; |
| case ST_DEC_TITAN: |
| vec = titan_vecs[0]; /* default */ |
| 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, |
| &lynx_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 |
| }; |
| |
| size_t i; |
| |
| for (i = 0; i < N(all_vecs); ++i) { |
| struct alpha_machine_vector *mv = all_vecs[i]; |
| if (strcasecmp(mv->vector_name, name) == 0) |
| return mv; |
| } |
| return NULL; |
| } |
| |
| static void |
| get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu, |
| char **type_name, char **variation_name) |
| { |
| unsigned long member; |
| |
| /* 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_MARVEL: |
| if (member < N(marvel_indices)) |
| *variation_name = marvel_names[marvel_indices[member]]; |
| break; |
| case ST_DEC_RAWHIDE: |
| if (member < N(rawhide_indices)) |
| *variation_name = rawhide_names[rawhide_indices[member]]; |
| break; |
| case ST_DEC_TITAN: |
| *variation_name = titan_names[0]; /* default */ |
| 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; |
| unsigned long i; |
| int 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 void |
| show_cache_size (struct seq_file *f, const char *which, int shape) |
| { |
| if (shape == -1) |
| seq_printf (f, "%s\t\t: n/a\n", which); |
| else if (shape == 0) |
| seq_printf (f, "%s\t\t: unknown\n", which); |
| else |
| seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n", |
| which, shape >> 10, shape & 15, |
| 1 << ((shape >> 4) & 15)); |
| } |
| |
| 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, "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" |
| "cpus detected\t\t: %d\n", |
| 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 active\t\t: %d\n" |
| "cpu active mask\t\t: %016lx\n", |
| num_online_cpus(), cpus_addr(cpu_possible_map)[0]); |
| #endif |
| |
| show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape); |
| show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape); |
| show_cache_size (f, "L2 cache", alpha_l2_cacheshape); |
| show_cache_size (f, "L3 cache", alpha_l3_cacheshape); |
| |
| return 0; |
| } |
| |
| static int __init |
| read_mem_block(int *addr, int stride, int size) |
| { |
| long nloads = size / stride, cnt, tmp; |
| |
| __asm__ __volatile__( |
| " rpcc %0\n" |
| "1: ldl %3,0(%2)\n" |
| " subq %1,1,%1\n" |
| /* Next two XORs introduce an explicit data dependency between |
| consecutive loads in the loop, which will give us true load |
| latency. */ |
| " xor %3,%2,%2\n" |
| " xor %3,%2,%2\n" |
| " addq %2,%4,%2\n" |
| " bne %1,1b\n" |
| " rpcc %3\n" |
| " subl %3,%0,%0\n" |
| : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp) |
| : "r" (stride), "1" (nloads), "2" (addr)); |
| |
| return cnt / (size / stride); |
| } |
| |
| #define CSHAPE(totalsize, linesize, assoc) \ |
| ((totalsize & ~0xff) | (linesize << 4) | assoc) |
| |
| /* ??? EV5 supports up to 64M, but did the systems with more than |
| 16M of BCACHE ever exist? */ |
| #define MAX_BCACHE_SIZE 16*1024*1024 |
| |
| /* Note that the offchip caches are direct mapped on all Alphas. */ |
| static int __init |
| external_cache_probe(int minsize, int width) |
| { |
| int cycles, prev_cycles = 1000000; |
| int stride = 1 << width; |
| long size = minsize, maxsize = MAX_BCACHE_SIZE * 2; |
| |
| if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT) |
| maxsize = 1 << (floor_log2(max_low_pfn + 1) + PAGE_SHIFT); |
| |
| /* Get the first block cached. */ |
| read_mem_block(__va(0), stride, size); |
| |
| while (size < maxsize) { |
| /* Get an average load latency in cycles. */ |
| cycles = read_mem_block(__va(0), stride, size); |
| if (cycles > prev_cycles * 2) { |
| /* Fine, we exceed the cache. */ |
| printk("%ldK Bcache detected; load hit latency %d " |
| "cycles, load miss latency %d cycles\n", |
| size >> 11, prev_cycles, cycles); |
| return CSHAPE(size >> 1, width, 1); |
| } |
| /* Try to get the next block cached. */ |
| read_mem_block(__va(size), stride, size); |
| prev_cycles = cycles; |
| size <<= 1; |
| } |
| return -1; /* No BCACHE found. */ |
| } |
| |
| static void __init |
| determine_cpu_caches (unsigned int cpu_type) |
| { |
| int L1I, L1D, L2, L3; |
| |
| switch (cpu_type) { |
| case EV4_CPU: |
| case EV45_CPU: |
| { |
| if (cpu_type == EV4_CPU) |
| L1I = CSHAPE(8*1024, 5, 1); |
| else |
| L1I = CSHAPE(16*1024, 5, 1); |
| L1D = L1I; |
| L3 = -1; |
| |
| /* BIU_CTL is a write-only Abox register. PALcode has a |
| shadow copy, and may be available from some versions |
| of the CSERVE PALcall. If we can get it, then |
| |
| unsigned long biu_ctl, size; |
| size = 128*1024 * (1 << ((biu_ctl >> 28) & 7)); |
| L2 = CSHAPE (size, 5, 1); |
| |
| Unfortunately, we can't rely on that. |
| */ |
| L2 = external_cache_probe(128*1024, 5); |
| break; |
| } |
| |
| case LCA4_CPU: |
| { |
| unsigned long car, size; |
| |
| L1I = L1D = CSHAPE(8*1024, 5, 1); |
| L3 = -1; |
| |
| car = *(vuip) phys_to_virt (0x120000078UL); |
| size = 64*1024 * (1 << ((car >> 5) & 7)); |
| /* No typo -- 8 byte cacheline size. Whodathunk. */ |
| L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1); |
| break; |
| } |
| |
| case EV5_CPU: |
| case EV56_CPU: |
| { |
| unsigned long sc_ctl, width; |
| |
| L1I = L1D = CSHAPE(8*1024, 5, 1); |
| |
| /* Check the line size of the Scache. */ |
| sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL); |
| width = sc_ctl & 0x1000 ? 6 : 5; |
| L2 = CSHAPE (96*1024, width, 3); |
| |
| /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode |
| has a shadow copy, and may be available from some versions |
| of the CSERVE PALcall. If we can get it, then |
| |
| unsigned long bc_control, bc_config, size; |
| size = 1024*1024 * (1 << ((bc_config & 7) - 1)); |
| L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1); |
| |
| Unfortunately, we can't rely on that. |
| */ |
| L3 = external_cache_probe(1024*1024, width); |
| break; |
| } |
| |
| case PCA56_CPU: |
| case PCA57_CPU: |
| { |
| unsigned long cbox_config, size; |
| |
| if (cpu_type == PCA56_CPU) { |
| L1I = CSHAPE(16*1024, 6, 1); |
| L1D = CSHAPE(8*1024, 5, 1); |
| } else { |
| L1I = CSHAPE(32*1024, 6, 2); |
| L1D = CSHAPE(16*1024, 5, 1); |
| } |
| L3 = -1; |
| |
| cbox_config = *(vulp) phys_to_virt (0xfffff00008UL); |
| size = 512*1024 * (1 << ((cbox_config >> 12) & 3)); |
| |
| #if 0 |
| L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1); |
| #else |
| L2 = external_cache_probe(512*1024, 6); |
| #endif |
| break; |
| } |
| |
| case EV6_CPU: |
| case EV67_CPU: |
| case EV68CB_CPU: |
| case EV68AL_CPU: |
| case EV68CX_CPU: |
| case EV69_CPU: |
| L1I = L1D = CSHAPE(64*1024, 6, 2); |
| L2 = external_cache_probe(1024*1024, 6); |
| L3 = -1; |
| break; |
| |
| case EV7_CPU: |
| case EV79_CPU: |
| L1I = L1D = CSHAPE(64*1024, 6, 2); |
| L2 = CSHAPE(7*1024*1024/4, 6, 7); |
| L3 = -1; |
| break; |
| |
| default: |
| /* Nothing known about this cpu type. */ |
| L1I = L1D = L2 = L3 = 0; |
| break; |
| } |
| |
| alpha_l1i_cacheshape = L1I; |
| alpha_l1d_cacheshape = L1D; |
| alpha_l2_cacheshape = L2; |
| alpha_l3_cacheshape = L3; |
| } |
| |
| /* |
| * 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; |
| } |
| |
| static __init int add_pcspkr(void) |
| { |
| struct platform_device *pd; |
| int ret; |
| |
| pd = platform_device_alloc("pcspkr", -1); |
| if (!pd) |
| return -ENOMEM; |
| |
| ret = platform_device_add(pd); |
| if (ret) |
| platform_device_put(pd); |
| |
| return ret; |
| } |
| device_initcall(add_pcspkr); |