diff options
Diffstat (limited to 'arch/sparc64/mm/init.c')
| -rw-r--r-- | arch/sparc64/mm/init.c | 57 |
1 files changed, 52 insertions, 5 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c index 1539a8362b6..dcba4e6ab57 100644 --- a/arch/sparc64/mm/init.c +++ b/arch/sparc64/mm/init.c @@ -5,7 +5,6 @@ * Copyright (C) 1997-1999 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */ -#include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/sched.h> @@ -18,6 +17,7 @@ #include <linux/initrd.h> #include <linux/swap.h> #include <linux/pagemap.h> +#include <linux/poison.h> #include <linux/fs.h> #include <linux/seq_file.h> #include <linux/kprobes.h> @@ -42,6 +42,7 @@ #include <asm/sections.h> #include <asm/tsb.h> #include <asm/hypervisor.h> +#include <asm/prom.h> extern void device_scan(void); @@ -101,8 +102,6 @@ static void __init read_obp_memory(const char *property, prom_halt(); } - *num_ents = ents; - /* Sanitize what we got from the firmware, by page aligning * everything. */ @@ -124,6 +123,25 @@ static void __init read_obp_memory(const char *property, regs[i].phys_addr = base; regs[i].reg_size = size; } + + for (i = 0; i < ents; i++) { + if (regs[i].reg_size == 0UL) { + int j; + + for (j = i; j < ents - 1; j++) { + regs[j].phys_addr = + regs[j+1].phys_addr; + regs[j].reg_size = + regs[j+1].reg_size; + } + + ents--; + i--; + } + } + + *num_ents = ents; + sort(regs, ents, sizeof(struct linux_prom64_registers), cmp_p64, NULL); } @@ -1339,6 +1357,8 @@ void __init paging_init(void) kernel_physical_mapping_init(); + prom_build_devicetree(); + { unsigned long zones_size[MAX_NR_ZONES]; unsigned long zholes_size[MAX_NR_ZONES]; @@ -1376,7 +1396,7 @@ static void __init taint_real_pages(void) while (old_start < old_end) { int n; - for (n = 0; pavail_rescan_ents; n++) { + for (n = 0; n < pavail_rescan_ents; n++) { unsigned long new_start, new_end; new_start = pavail_rescan[n].phys_addr; @@ -1398,6 +1418,32 @@ static void __init taint_real_pages(void) } } +int __init page_in_phys_avail(unsigned long paddr) +{ + int i; + + paddr &= PAGE_MASK; + + for (i = 0; i < pavail_rescan_ents; i++) { + unsigned long start, end; + + start = pavail_rescan[i].phys_addr; + end = start + pavail_rescan[i].reg_size; + + if (paddr >= start && paddr < end) + return 1; + } + if (paddr >= kern_base && paddr < (kern_base + kern_size)) + return 1; +#ifdef CONFIG_BLK_DEV_INITRD + if (paddr >= __pa(initrd_start) && + paddr < __pa(PAGE_ALIGN(initrd_end))) + return 1; +#endif + + return 0; +} + void __init mem_init(void) { unsigned long codepages, datapages, initpages; @@ -1474,7 +1520,7 @@ void free_initmem(void) page = (addr + ((unsigned long) __va(kern_base)) - ((unsigned long) KERNBASE)); - memset((void *)addr, 0xcc, PAGE_SIZE); + memset((void *)addr, POISON_FREE_INITMEM, PAGE_SIZE); p = virt_to_page(page); ClearPageReserved(p); @@ -1522,6 +1568,7 @@ pgprot_t PAGE_EXEC __read_mostly; unsigned long pg_iobits __read_mostly; unsigned long _PAGE_IE __read_mostly; +EXPORT_SYMBOL(_PAGE_IE); unsigned long _PAGE_E __read_mostly; EXPORT_SYMBOL(_PAGE_E); |