nfs: nfs4xdr: encode_compound_hdr does not have to round up reserved bytes

[safe/jmp/linux-2.6] / arch / x86 / kernel / efi.c

diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c
index 77d424c..fe26ba3 100644 (file)
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -64,6 +64,17 @@ static int __init setup_noefi(char *arg)
 }
 early_param("noefi", setup_noefi);
 
+int add_efi_memmap;
+EXPORT_SYMBOL(add_efi_memmap);
+
+static int __init setup_add_efi_memmap(char *arg)
+{
+       add_efi_memmap = 1;
+       return 0;
+}
+early_param("add_efi_memmap", setup_add_efi_memmap);
+
+
 static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
 {
        return efi_call_virt2(get_time, tm, tc);
@@ -213,6 +224,75 @@ unsigned long efi_get_time(void)
                      eft.minute, eft.second);
 }
 
+/*
+ * Tell the kernel about the EFI memory map.  This might include
+ * more than the max 128 entries that can fit in the e820 legacy
+ * (zeropage) memory map.
+ */
+
+static void __init do_add_efi_memmap(void)
+{
+       void *p;
+
+       for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
+               efi_memory_desc_t *md = p;
+               unsigned long long start = md->phys_addr;
+               unsigned long long size = md->num_pages << EFI_PAGE_SHIFT;
+               int e820_type;
+
+               switch (md->type) {
+               case EFI_LOADER_CODE:
+               case EFI_LOADER_DATA:
+               case EFI_BOOT_SERVICES_CODE:
+               case EFI_BOOT_SERVICES_DATA:
+               case EFI_CONVENTIONAL_MEMORY:
+                       if (md->attribute & EFI_MEMORY_WB)
+                               e820_type = E820_RAM;
+                       else
+                               e820_type = E820_RESERVED;
+                       break;
+               case EFI_ACPI_RECLAIM_MEMORY:
+                       e820_type = E820_ACPI;
+                       break;
+               case EFI_ACPI_MEMORY_NVS:
+                       e820_type = E820_NVS;
+                       break;
+               case EFI_UNUSABLE_MEMORY:
+                       e820_type = E820_UNUSABLE;
+                       break;
+               default:
+                       /*
+                        * EFI_RESERVED_TYPE EFI_RUNTIME_SERVICES_CODE
+                        * EFI_RUNTIME_SERVICES_DATA EFI_MEMORY_MAPPED_IO
+                        * EFI_MEMORY_MAPPED_IO_PORT_SPACE EFI_PAL_CODE
+                        */
+                       e820_type = E820_RESERVED;
+                       break;
+               }
+               e820_add_region(start, size, e820_type);
+       }
+       sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
+}
+
+void __init efi_reserve_early(void)
+{
+       unsigned long pmap;
+
+#ifdef CONFIG_X86_32
+       pmap = boot_params.efi_info.efi_memmap;
+#else
+       pmap = (boot_params.efi_info.efi_memmap |
+               ((__u64)boot_params.efi_info.efi_memmap_hi<<32));
+#endif
+       memmap.phys_map = (void *)pmap;
+       memmap.nr_map = boot_params.efi_info.efi_memmap_size /
+               boot_params.efi_info.efi_memdesc_size;
+       memmap.desc_version = boot_params.efi_info.efi_memdesc_version;
+       memmap.desc_size = boot_params.efi_info.efi_memdesc_size;
+       reserve_early(pmap, pmap + memmap.nr_map * memmap.desc_size,
+                     "EFI memmap");
+}
+
 #if EFI_DEBUG
 static void __init print_efi_memmap(void)
 {
@@ -244,19 +324,11 @@ void __init efi_init(void)
 
 #ifdef CONFIG_X86_32
        efi_phys.systab = (efi_system_table_t *)boot_params.efi_info.efi_systab;
-       memmap.phys_map = (void *)boot_params.efi_info.efi_memmap;
 #else
        efi_phys.systab = (efi_system_table_t *)
                (boot_params.efi_info.efi_systab |
                 ((__u64)boot_params.efi_info.efi_systab_hi<<32));
-       memmap.phys_map = (void *)
-               (boot_params.efi_info.efi_memmap |
-                ((__u64)boot_params.efi_info.efi_memmap_hi<<32));
 #endif
-       memmap.nr_map = boot_params.efi_info.efi_memmap_size /
-               boot_params.efi_info.efi_memdesc_size;
-       memmap.desc_version = boot_params.efi_info.efi_memdesc_version;
-       memmap.desc_size = boot_params.efi_info.efi_memdesc_size;
 
        efi.systab = early_ioremap((unsigned long)efi_phys.systab,
                                   sizeof(efi_system_table_t));
@@ -282,7 +354,7 @@ void __init efi_init(void)
         */
        c16 = tmp = early_ioremap(efi.systab->fw_vendor, 2);
        if (c16) {
-               for (i = 0; i < sizeof(vendor) && *c16; ++i)
+               for (i = 0; i < sizeof(vendor) - 1 && *c16; ++i)
                        vendor[i] = *c16++;
                vendor[i] = '\0';
        } else
@@ -319,6 +391,12 @@ void __init efi_init(void)
                                        SMBIOS_TABLE_GUID)) {
                        efi.smbios = config_tables[i].table;
                        printk(" SMBIOS=0x%lx ", config_tables[i].table);
+#ifdef CONFIG_X86_UV
+               } else if (!efi_guidcmp(config_tables[i].guid,
+                                       UV_SYSTEM_TABLE_GUID)) {
+                       efi.uv_systab = config_tables[i].table;
+                       printk(" UVsystab=0x%lx ", config_tables[i].table);
+#endif
                } else if (!efi_guidcmp(config_tables[i].guid,
                                        HCDP_TABLE_GUID)) {
                        efi.hcdp = config_tables[i].table;
@@ -367,9 +445,13 @@ void __init efi_init(void)
        if (memmap.map == NULL)
                printk(KERN_ERR "Could not map the EFI memory map!\n");
        memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size);
+
        if (memmap.desc_size != sizeof(efi_memory_desc_t))
-               printk(KERN_WARNING "Kernel-defined memdesc"
-                      "doesn't match the one from EFI!\n");
+               printk(KERN_WARNING
+                 "Kernel-defined memdesc doesn't match the one from EFI!\n");
+
+       if (add_efi_memmap)
+               do_add_efi_memmap();
 
        /* Setup for EFI runtime service */
        reboot_type = BOOT_EFI;
@@ -412,7 +494,7 @@ void __init efi_enter_virtual_mode(void)
        efi_memory_desc_t *md;
        efi_status_t status;
        unsigned long size;
-       u64 end, systab, addr, npages;
+       u64 end, systab, addr, npages, end_pfn;
        void *p, *va;
 
        efi.systab = NULL;
@@ -424,10 +506,13 @@ void __init efi_enter_virtual_mode(void)
                size = md->num_pages << EFI_PAGE_SHIFT;
                end = md->phys_addr + size;
 
-               if (PFN_UP(end) <= max_pfn_mapped)
+               end_pfn = PFN_UP(end);
+               if (end_pfn <= max_low_pfn_mapped
+                   || (end_pfn > (1UL << (32 - PAGE_SHIFT))
+                       && end_pfn <= max_pfn_mapped))
                        va = __va(md->phys_addr);
                else
-                       va = efi_ioremap(md->phys_addr, size);
+                       va = efi_ioremap(md->phys_addr, size, md->type);
 
                md->virt_addr = (u64) (unsigned long) va;