#include <asm/smp.h>
#include <linux/user.h>
#include <linux/a.out.h>
-#include <linux/screen_info.h>
+#include <linux/tty.h>
#include <linux/delay.h>
+#include <linux/config.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
#include <linux/syscalls.h>
16 /* orig-video-points */
};
+/* Typing sync at the prom prompt calls the function pointed to by
+ * the sync callback which I set to the following function.
+ * This should sync all filesystems and return, for now it just
+ * prints out pretty messages and returns.
+ */
+
void (*prom_palette)(int);
void (*prom_keyboard)(void);
prom_write(s, n);
}
+static struct console prom_console = {
+ .name = "prom",
+ .write = prom_console_write,
+ .flags = CON_CONSDEV | CON_ENABLED,
+ .index = -1,
+};
+
+#define PROM_TRUE -1
+#define PROM_FALSE 0
+
+/* Pretty sick eh? */
+int prom_callback(long *args)
+{
+ struct console *cons, *saved_console = NULL;
+ unsigned long flags;
+ char *cmd;
+ extern spinlock_t prom_entry_lock;
+
+ if (!args)
+ return -1;
+ if (!(cmd = (char *)args[0]))
+ return -1;
+
+ /*
+ * The callback can be invoked on the cpu that first dropped
+ * into prom_cmdline after taking the serial interrupt, or on
+ * a slave processor that was smp_captured() if the
+ * administrator has done a switch-cpu inside obp. In either
+ * case, the cpu is marked as in-interrupt. Drop IRQ locks.
+ */
+ irq_exit();
+
+ /* XXX Revisit the locking here someday. This is a debugging
+ * XXX feature so it isnt all that critical. -DaveM
+ */
+ local_irq_save(flags);
+
+ spin_unlock(&prom_entry_lock);
+ cons = console_drivers;
+ while (cons) {
+ unregister_console(cons);
+ cons->flags &= ~(CON_PRINTBUFFER);
+ cons->next = saved_console;
+ saved_console = cons;
+ cons = console_drivers;
+ }
+ register_console(&prom_console);
+ if (!strcmp(cmd, "sync")) {
+ prom_printf("PROM `%s' command...\n", cmd);
+ show_free_areas();
+ if (current->pid != 0) {
+ local_irq_enable();
+ sys_sync();
+ local_irq_disable();
+ }
+ args[2] = 0;
+ args[args[1] + 3] = -1;
+ prom_printf("Returning to PROM\n");
+ } else if (!strcmp(cmd, "va>tte-data")) {
+ unsigned long ctx, va;
+ unsigned long tte = 0;
+ long res = PROM_FALSE;
+
+ ctx = args[3];
+ va = args[4];
+ if (ctx) {
+ /*
+ * Find process owning ctx, lookup mapping.
+ */
+ struct task_struct *p;
+ struct mm_struct *mm = NULL;
+ pgd_t *pgdp;
+ pud_t *pudp;
+ pmd_t *pmdp;
+ pte_t *ptep;
+ pte_t pte;
+
+ for_each_process(p) {
+ mm = p->mm;
+ if (CTX_NRBITS(mm->context) == ctx)
+ break;
+ }
+ if (!mm ||
+ CTX_NRBITS(mm->context) != ctx)
+ goto done;
+
+ pgdp = pgd_offset(mm, va);
+ if (pgd_none(*pgdp))
+ goto done;
+ pudp = pud_offset(pgdp, va);
+ if (pud_none(*pudp))
+ goto done;
+ pmdp = pmd_offset(pudp, va);
+ if (pmd_none(*pmdp))
+ goto done;
+
+ /* Preemption implicitly disabled by virtue of
+ * being called from inside OBP.
+ */
+ ptep = pte_offset_map(pmdp, va);
+ pte = *ptep;
+ if (pte_present(pte)) {
+ tte = pte_val(pte);
+ res = PROM_TRUE;
+ }
+ pte_unmap(ptep);
+ goto done;
+ }
+
+ if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) {
+ extern unsigned long sparc64_kern_pri_context;
+
+ /* Spitfire Errata #32 workaround */
+ __asm__ __volatile__("stxa %0, [%1] %2\n\t"
+ "flush %%g6"
+ : /* No outputs */
+ : "r" (sparc64_kern_pri_context),
+ "r" (PRIMARY_CONTEXT),
+ "i" (ASI_DMMU));
+
+ /*
+ * Locked down tlb entry.
+ */
+
+ if (tlb_type == spitfire)
+ tte = spitfire_get_dtlb_data(SPITFIRE_HIGHEST_LOCKED_TLBENT);
+ else if (tlb_type == cheetah || tlb_type == cheetah_plus)
+ tte = cheetah_get_ldtlb_data(CHEETAH_HIGHEST_LOCKED_TLBENT);
+
+ res = PROM_TRUE;
+ goto done;
+ }
+
+ if (va < PGDIR_SIZE) {
+ /*
+ * vmalloc or prom_inherited mapping.
+ */
+ pgd_t *pgdp;
+ pud_t *pudp;
+ pmd_t *pmdp;
+ pte_t *ptep;
+ pte_t pte;
+ int error;
+
+ if ((va >= LOW_OBP_ADDRESS) && (va < HI_OBP_ADDRESS)) {
+ tte = prom_virt_to_phys(va, &error);
+ if (!error)
+ res = PROM_TRUE;
+ goto done;
+ }
+ pgdp = pgd_offset_k(va);
+ if (pgd_none(*pgdp))
+ goto done;
+ pudp = pud_offset(pgdp, va);
+ if (pud_none(*pudp))
+ goto done;
+ pmdp = pmd_offset(pudp, va);
+ if (pmd_none(*pmdp))
+ goto done;
+
+ /* Preemption implicitly disabled by virtue of
+ * being called from inside OBP.
+ */
+ ptep = pte_offset_kernel(pmdp, va);
+ pte = *ptep;
+ if (pte_present(pte)) {
+ tte = pte_val(pte);
+ res = PROM_TRUE;
+ }
+ goto done;
+ }
+
+ if (va < PAGE_OFFSET) {
+ /*
+ * No mappings here.
+ */
+ goto done;
+ }
+
+ if (va & (1UL << 40)) {
+ /*
+ * I/O page.
+ */
+
+ tte = (__pa(va) & _PAGE_PADDR) |
+ _PAGE_VALID | _PAGE_SZ4MB |
+ _PAGE_E | _PAGE_P | _PAGE_W;
+ res = PROM_TRUE;
+ goto done;
+ }
+
+ /*
+ * Normal page.
+ */
+ tte = (__pa(va) & _PAGE_PADDR) |
+ _PAGE_VALID | _PAGE_SZ4MB |
+ _PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W;
+ res = PROM_TRUE;
+
+ done:
+ if (res == PROM_TRUE) {
+ args[2] = 3;
+ args[args[1] + 3] = 0;
+ args[args[1] + 4] = res;
+ args[args[1] + 5] = tte;
+ } else {
+ args[2] = 2;
+ args[args[1] + 3] = 0;
+ args[args[1] + 4] = res;
+ }
+ } else if (!strcmp(cmd, ".soft1")) {
+ unsigned long tte;
+
+ tte = args[3];
+ prom_printf("%lx:\"%s%s%s%s%s\" ",
+ (tte & _PAGE_SOFT) >> 7,
+ tte & _PAGE_MODIFIED ? "M" : "-",
+ tte & _PAGE_ACCESSED ? "A" : "-",
+ tte & _PAGE_READ ? "W" : "-",
+ tte & _PAGE_WRITE ? "R" : "-",
+ tte & _PAGE_PRESENT ? "P" : "-");
+
+ args[2] = 2;
+ args[args[1] + 3] = 0;
+ args[args[1] + 4] = PROM_TRUE;
+ } else if (!strcmp(cmd, ".soft2")) {
+ unsigned long tte;
+
+ tte = args[3];
+ prom_printf("%lx ", (tte & 0x07FC000000000000UL) >> 50);
+
+ args[2] = 2;
+ args[args[1] + 3] = 0;
+ args[args[1] + 4] = PROM_TRUE;
+ } else {
+ prom_printf("unknown PROM `%s' command...\n", cmd);
+ }
+ unregister_console(&prom_console);
+ while (saved_console) {
+ cons = saved_console;
+ saved_console = cons->next;
+ register_console(cons);
+ }
+ spin_lock(&prom_entry_lock);
+ local_irq_restore(flags);
+
+ /*
+ * Restore in-interrupt status for a resume from obp.
+ */
+ irq_enter();
+ return 0;
+}
+
unsigned int boot_flags = 0;
#define BOOTME_DEBUG 0x1
#define BOOTME_SINGLE 0x2
static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
-void __init per_cpu_patch(void)
+void register_prom_callbacks(void)
{
- struct cpuid_patch_entry *p;
- unsigned long ver;
- int is_jbus;
-
- if (tlb_type == spitfire && !this_is_starfire)
- return;
-
- is_jbus = 0;
- if (tlb_type != hypervisor) {
- __asm__ ("rdpr %%ver, %0" : "=r" (ver));
- is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
- (ver >> 32UL) == __SERRANO_ID);
- }
-
- p = &__cpuid_patch;
- while (p < &__cpuid_patch_end) {
- unsigned long addr = p->addr;
- unsigned int *insns;
-
- switch (tlb_type) {
- case spitfire:
- insns = &p->starfire[0];
- break;
- case cheetah:
- case cheetah_plus:
- if (is_jbus)
- insns = &p->cheetah_jbus[0];
- else
- insns = &p->cheetah_safari[0];
- break;
- case hypervisor:
- insns = &p->sun4v[0];
- break;
- default:
- prom_printf("Unknown cpu type, halting.\n");
- prom_halt();
- };
-
- *(unsigned int *) (addr + 0) = insns[0];
- wmb();
- __asm__ __volatile__("flush %0" : : "r" (addr + 0));
-
- *(unsigned int *) (addr + 4) = insns[1];
- wmb();
- __asm__ __volatile__("flush %0" : : "r" (addr + 4));
-
- *(unsigned int *) (addr + 8) = insns[2];
- wmb();
- __asm__ __volatile__("flush %0" : : "r" (addr + 8));
-
- *(unsigned int *) (addr + 12) = insns[3];
- wmb();
- __asm__ __volatile__("flush %0" : : "r" (addr + 12));
-
- p++;
- }
+ prom_setcallback(prom_callback);
+ prom_feval(": linux-va>tte-data 2 \" va>tte-data\" $callback drop ; "
+ "' linux-va>tte-data to va>tte-data");
+ prom_feval(": linux-.soft1 1 \" .soft1\" $callback 2drop ; "
+ "' linux-.soft1 to .soft1");
+ prom_feval(": linux-.soft2 1 \" .soft2\" $callback 2drop ; "
+ "' linux-.soft2 to .soft2");
}
-void __init sun4v_patch(void)
-{
- struct sun4v_1insn_patch_entry *p1;
- struct sun4v_2insn_patch_entry *p2;
-
- if (tlb_type != hypervisor)
- return;
-
- p1 = &__sun4v_1insn_patch;
- while (p1 < &__sun4v_1insn_patch_end) {
- unsigned long addr = p1->addr;
-
- *(unsigned int *) (addr + 0) = p1->insn;
- wmb();
- __asm__ __volatile__("flush %0" : : "r" (addr + 0));
-
- p1++;
- }
-
- p2 = &__sun4v_2insn_patch;
- while (p2 < &__sun4v_2insn_patch_end) {
- unsigned long addr = p2->addr;
-
- *(unsigned int *) (addr + 0) = p2->insns[0];
- wmb();
- __asm__ __volatile__("flush %0" : : "r" (addr + 0));
-
- *(unsigned int *) (addr + 4) = p2->insns[1];
- wmb();
- __asm__ __volatile__("flush %0" : : "r" (addr + 4));
-
- p2++;
- }
-}
-
-#ifdef CONFIG_SMP
-void __init boot_cpu_id_too_large(int cpu)
-{
- prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
- cpu, NR_CPUS);
- prom_halt();
-}
-#endif
-
void __init setup_arch(char **cmdline_p)
{
/* Initialize PROM console and command line. */
*cmdline_p = prom_getbootargs();
strcpy(saved_command_line, *cmdline_p);
- if (tlb_type == hypervisor)
- printk("ARCH: SUN4V\n");
- else
- printk("ARCH: SUN4U\n");
+ printk("ARCH: SUN4U\n");
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
conswitchp = &prom_con;
#endif
+ /* Work out if we are starfire early on */
+ check_if_starfire();
+
boot_flags_init(*cmdline_p);
idprom_init();
if (!root_flags)
root_mountflags &= ~MS_RDONLY;
ROOT_DEV = old_decode_dev(root_dev);
-#ifdef CONFIG_BLK_DEV_RAM
+#ifdef CONFIG_BLK_DEV_INITRD
rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
}
#endif
- /* Get boot processor trap_block[] setup. */
- init_cur_cpu_trap(current_thread_info());
+ smp_setup_cpu_possible_map();
paging_init();
-
- smp_setup_cpu_possible_map();
}
static int __init set_preferred_console(void)
serial_console = 2;
} else if (idev == PROMDEV_IRSC && odev == PROMDEV_ORSC) {
serial_console = 3;
- } else if (idev == PROMDEV_IVCONS && odev == PROMDEV_OVCONS) {
- /* sunhv_console_init() doesn't check the serial_console
- * value anyways...
- */
- serial_console = 4;
- return add_preferred_console("ttyHV", 0, NULL);
} else {
prom_printf("Inconsistent console: "
"input %d, output %d\n",
seq_printf(m,
"cpu\t\t: %s\n"
"fpu\t\t: %s\n"
- "prom\t\t: %s\n"
- "type\t\t: %s\n"
+ "promlib\t\t: Version 3 Revision %d\n"
+ "prom\t\t: %d.%d.%d\n"
+ "type\t\t: sun4u\n"
"ncpus probed\t: %d\n"
"ncpus active\t: %d\n"
"D$ parity tl1\t: %u\n"
,
sparc_cpu_type,
sparc_fpu_type,
- prom_version,
- ((tlb_type == hypervisor) ?
- "sun4v" :
- "sun4u"),
+ prom_rev,
+ prom_prev >> 16,
+ (prom_prev >> 8) & 0xff,
+ prom_prev & 0xff,
ncpus_probed,
num_online_cpus(),
dcache_parity_tl1_occurred,
while (!cpu_find_by_instance(ncpus_probed, NULL, NULL))
ncpus_probed++;
- for_each_possible_cpu(i) {
- struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
- if (p) {
- register_cpu(p, i);
- err = 0;
+ for (i = 0; i < NR_CPUS; i++) {
+ if (cpu_possible(i)) {
+ struct cpu *p = kmalloc(sizeof(*p), GFP_KERNEL);
+
+ if (p) {
+ memset(p, 0, sizeof(*p));
+ register_cpu(p, i, NULL);
+ err = 0;
+ }
}
}
git://git.onelab.eu / linux-2.6.git / blobdiff