diff options
Diffstat (limited to 'arch/ia64/kernel/efi.c')
| -rw-r--r-- | arch/ia64/kernel/efi.c | 78 |
1 files changed, 71 insertions, 7 deletions
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c index 919070a9aed..d45f215bc8f 100644 --- a/arch/ia64/kernel/efi.c +++ b/arch/ia64/kernel/efi.c @@ -37,6 +37,7 @@ #include <asm/pgtable.h> #include <asm/processor.h> #include <asm/mca.h> +#include <asm/tlbflush.h> #define EFI_DEBUG 0 @@ -379,8 +380,8 @@ efi_get_pal_addr (void) * a dedicated ITR for the PAL code. */ if ((vaddr & mask) == (KERNEL_START & mask)) { - printk(KERN_INFO "%s: no need to install ITR for " - "PAL code\n", __FUNCTION__); + printk(KERN_INFO "%s: no need to install ITR for PAL code\n", + __func__); continue; } @@ -399,10 +400,45 @@ efi_get_pal_addr (void) return __va(md->phys_addr); } printk(KERN_WARNING "%s: no PAL-code memory-descriptor found\n", - __FUNCTION__); + __func__); return NULL; } + +static u8 __init palo_checksum(u8 *buffer, u32 length) +{ + u8 sum = 0; + u8 *end = buffer + length; + + while (buffer < end) + sum = (u8) (sum + *(buffer++)); + + return sum; +} + +/* + * Parse and handle PALO table which is published at: + * http://www.dig64.org/home/DIG64_PALO_R1_0.pdf + */ +static void __init handle_palo(unsigned long palo_phys) +{ + struct palo_table *palo = __va(palo_phys); + u8 checksum; + + if (strncmp(palo->signature, PALO_SIG, sizeof(PALO_SIG) - 1)) { + printk(KERN_INFO "PALO signature incorrect.\n"); + return; + } + + checksum = palo_checksum((u8 *)palo, palo->length); + if (checksum) { + printk(KERN_INFO "PALO checksum incorrect.\n"); + return; + } + + setup_ptcg_sem(palo->max_tlb_purges, NPTCG_FROM_PALO); +} + void efi_map_pal_code (void) { @@ -432,6 +468,7 @@ efi_init (void) u64 efi_desc_size; char *cp, vendor[100] = "unknown"; int i; + unsigned long palo_phys; /* * It's too early to be able to use the standard kernel command line @@ -496,6 +533,8 @@ efi_init (void) efi.hcdp = EFI_INVALID_TABLE_ADDR; efi.uga = EFI_INVALID_TABLE_ADDR; + palo_phys = EFI_INVALID_TABLE_ADDR; + for (i = 0; i < (int) efi.systab->nr_tables; i++) { if (efi_guidcmp(config_tables[i].guid, MPS_TABLE_GUID) == 0) { efi.mps = config_tables[i].table; @@ -515,10 +554,17 @@ efi_init (void) } else if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) { efi.hcdp = config_tables[i].table; printk(" HCDP=0x%lx", config_tables[i].table); + } else if (efi_guidcmp(config_tables[i].guid, + PROCESSOR_ABSTRACTION_LAYER_OVERWRITE_GUID) == 0) { + palo_phys = config_tables[i].table; + printk(" PALO=0x%lx", config_tables[i].table); } } printk("\n"); + if (palo_phys != EFI_INVALID_TABLE_ADDR) + handle_palo(palo_phys); + runtime = __va(efi.systab->runtime); efi.get_time = phys_get_time; efi.set_time = phys_set_time; @@ -543,12 +589,30 @@ efi_init (void) for (i = 0, p = efi_map_start; p < efi_map_end; ++i, p += efi_desc_size) { + const char *unit; + unsigned long size; + md = p; - printk("mem%02u: type=%u, attr=0x%lx, " - "range=[0x%016lx-0x%016lx) (%luMB)\n", + size = md->num_pages << EFI_PAGE_SHIFT; + + if ((size >> 40) > 0) { + size >>= 40; + unit = "TB"; + } else if ((size >> 30) > 0) { + size >>= 30; + unit = "GB"; + } else if ((size >> 20) > 0) { + size >>= 20; + unit = "MB"; + } else { + size >>= 10; + unit = "KB"; + } + + printk("mem%02d: type=%2u, attr=0x%016lx, " + "range=[0x%016lx-0x%016lx) (%4lu%s)\n", i, md->type, md->attribute, md->phys_addr, - md->phys_addr + efi_md_size(md), - md->num_pages >> (20 - EFI_PAGE_SHIFT)); + md->phys_addr + efi_md_size(md), size, unit); } } #endif |