summaryrefslogtreecommitdiffstats
path: root/arch/alpha/kernel/setup.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/alpha/kernel/setup.c')
-rw-r--r--arch/alpha/kernel/setup.c1486
1 files changed, 1486 insertions, 0 deletions
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
new file mode 100644
index 00000000000..b4e5f8ff2b2
--- /dev/null
+++ b/arch/alpha/kernel/setup.c
@@ -0,0 +1,1486 @@
+/*
+ * 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>
+#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;
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-19 09:33:49 +0000