diff options
Diffstat (limited to 'arch/sparc64/kernel/setup.c')
| -rw-r--r-- | arch/sparc64/kernel/setup.c | 87 |
1 files changed, 32 insertions, 55 deletions
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c index ddbed3341a2..48180531562 100644 --- a/arch/sparc64/kernel/setup.c +++ b/arch/sparc64/kernel/setup.c @@ -154,6 +154,7 @@ int prom_callback(long *args) pud_t *pudp; pmd_t *pmdp; pte_t *ptep; + pte_t pte; for_each_process(p) { mm = p->mm; @@ -178,8 +179,9 @@ int prom_callback(long *args) * being called from inside OBP. */ ptep = pte_offset_map(pmdp, va); - if (pte_present(*ptep)) { - tte = pte_val(*ptep); + pte = *ptep; + if (pte_present(pte)) { + tte = pte_val(pte); res = PROM_TRUE; } pte_unmap(ptep); @@ -187,17 +189,13 @@ int prom_callback(long *args) } if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) { - unsigned long kernel_pctx = 0; - - if (tlb_type == cheetah_plus) - kernel_pctx |= (CTX_CHEETAH_PLUS_NUC | - CTX_CHEETAH_PLUS_CTX0); + extern unsigned long sparc64_kern_pri_context; /* Spitfire Errata #32 workaround */ __asm__ __volatile__("stxa %0, [%1] %2\n\t" "flush %%g6" : /* No outputs */ - : "r" (kernel_pctx), + : "r" (sparc64_kern_pri_context), "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU)); @@ -222,6 +220,7 @@ int prom_callback(long *args) pud_t *pudp; pmd_t *pmdp; pte_t *ptep; + pte_t pte; int error; if ((va >= LOW_OBP_ADDRESS) && (va < HI_OBP_ADDRESS)) { @@ -244,8 +243,9 @@ int prom_callback(long *args) * being called from inside OBP. */ ptep = pte_offset_kernel(pmdp, va); - if (pte_present(*ptep)) { - tte = pte_val(*ptep); + pte = *ptep; + if (pte_present(pte)) { + tte = pte_val(pte); res = PROM_TRUE; } goto done; @@ -464,8 +464,6 @@ static void __init boot_flags_init(char *commands) } } -extern int prom_probe_memory(void); -extern unsigned long start, end; extern void panic_setup(char *, int *); extern unsigned short root_flags; @@ -492,13 +490,8 @@ void register_prom_callbacks(void) "' linux-.soft2 to .soft2"); } -extern void paging_init(void); - void __init setup_arch(char **cmdline_p) { - unsigned long highest_paddr; - int i; - /* Initialize PROM console and command line. */ *cmdline_p = prom_getbootargs(); strcpy(saved_command_line, *cmdline_p); @@ -517,40 +510,6 @@ void __init setup_arch(char **cmdline_p) boot_flags_init(*cmdline_p); idprom_init(); - (void) prom_probe_memory(); - - /* In paging_init() we tip off this value to see if we need - * to change init_mm.pgd to point to the real alias mapping. - */ - phys_base = 0xffffffffffffffffUL; - highest_paddr = 0UL; - for (i = 0; sp_banks[i].num_bytes != 0; i++) { - unsigned long top; - - if (sp_banks[i].base_addr < phys_base) - phys_base = sp_banks[i].base_addr; - top = sp_banks[i].base_addr + - sp_banks[i].num_bytes; - if (highest_paddr < top) - highest_paddr = top; - } - pfn_base = phys_base >> PAGE_SHIFT; - - switch (tlb_type) { - default: - case spitfire: - kern_base = spitfire_get_itlb_data(sparc64_highest_locked_tlbent()); - kern_base &= _PAGE_PADDR_SF; - break; - - case cheetah: - case cheetah_plus: - kern_base = cheetah_get_litlb_data(sparc64_highest_locked_tlbent()); - kern_base &= _PAGE_PADDR; - break; - }; - - kern_size = (unsigned long)&_end - (unsigned long)KERNBASE; if (!root_flags) root_mountflags &= ~MS_RDONLY; @@ -625,6 +584,11 @@ extern void smp_info(struct seq_file *); extern void smp_bogo(struct seq_file *); extern void mmu_info(struct seq_file *); +unsigned int dcache_parity_tl1_occurred; +unsigned int icache_parity_tl1_occurred; + +static int ncpus_probed; + static int show_cpuinfo(struct seq_file *m, void *__unused) { seq_printf(m, @@ -633,8 +597,10 @@ static int show_cpuinfo(struct seq_file *m, void *__unused) "promlib\t\t: Version 3 Revision %d\n" "prom\t\t: %d.%d.%d\n" "type\t\t: sun4u\n" - "ncpus probed\t: %ld\n" - "ncpus active\t: %ld\n" + "ncpus probed\t: %d\n" + "ncpus active\t: %d\n" + "D$ parity tl1\t: %u\n" + "I$ parity tl1\t: %u\n" #ifndef CONFIG_SMP "Cpu0Bogo\t: %lu.%02lu\n" "Cpu0ClkTck\t: %016lx\n" @@ -646,8 +612,10 @@ static int show_cpuinfo(struct seq_file *m, void *__unused) prom_prev >> 16, (prom_prev >> 8) & 0xff, prom_prev & 0xff, - (long)num_possible_cpus(), - (long)num_online_cpus() + ncpus_probed, + num_online_cpus(), + dcache_parity_tl1_occurred, + icache_parity_tl1_occurred #ifndef CONFIG_SMP , cpu_data(0).udelay_val/(500000/HZ), (cpu_data(0).udelay_val/(5000/HZ)) % 100, @@ -711,6 +679,15 @@ static int __init topology_init(void) int i, err; err = -ENOMEM; + + /* Count the number of physically present processors in + * the machine, even on uniprocessor, so that /proc/cpuinfo + * output is consistent with 2.4.x + */ + ncpus_probed = 0; + while (!cpu_find_by_instance(ncpus_probed, NULL, NULL)) + ncpus_probed++; + for (i = 0; i < NR_CPUS; i++) { if (cpu_possible(i)) { struct cpu *p = kmalloc(sizeof(*p), GFP_KERNEL); |