Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

[pandora-kernel.git] / arch / x86 / kernel / setup.c

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d3cfe26..9d43b28 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -113,6 +113,7 @@
 #endif
 #include <asm/mce.h>
 #include <asm/alternative.h>
+#include <asm/prom.h>
 
 /*
  * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
@@ -293,10 +294,32 @@ static void __init init_gbpages(void)
        else
                direct_gbpages = 0;
 }
+
+static void __init cleanup_highmap_brk_end(void)
+{
+       pud_t *pud;
+       pmd_t *pmd;
+
+       mmu_cr4_features = read_cr4();
+
+       /*
+        * _brk_end cannot change anymore, but it and _end may be
+        * located on different 2M pages. cleanup_highmap(), however,
+        * can only consider _end when it runs, so destroy any
+        * mappings beyond _brk_end here.
+        */
+       pud = pud_offset(pgd_offset_k(_brk_end), _brk_end);
+       pmd = pmd_offset(pud, _brk_end - 1);
+       while (++pmd <= pmd_offset(pud, (unsigned long)_end - 1))
+               pmd_clear(pmd);
+}
 #else
 static inline void init_gbpages(void)
 {
 }
+static inline void cleanup_highmap_brk_end(void)
+{
+}
 #endif
 
 static void __init reserve_brk(void)
@@ -307,6 +330,8 @@ static void __init reserve_brk(void)
        /* Mark brk area as locked down and no longer taking any
           new allocations */
        _brk_start = 0;
+
+       cleanup_highmap_brk_end();
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD
@@ -429,16 +454,30 @@ static void __init parse_setup_data(void)
                return;
        pa_data = boot_params.hdr.setup_data;
        while (pa_data) {
-               data = early_memremap(pa_data, PAGE_SIZE);
+               u32 data_len, map_len;
+
+               map_len = max(PAGE_SIZE - (pa_data & ~PAGE_MASK),
+                             (u64)sizeof(struct setup_data));
+               data = early_memremap(pa_data, map_len);
+               data_len = data->len + sizeof(struct setup_data);
+               if (data_len > map_len) {
+                       early_iounmap(data, map_len);
+                       data = early_memremap(pa_data, data_len);
+                       map_len = data_len;
+               }
+
                switch (data->type) {
                case SETUP_E820_EXT:
-                       parse_e820_ext(data, pa_data);
+                       parse_e820_ext(data);
+                       break;
+               case SETUP_DTB:
+                       add_dtb(pa_data);
                        break;
                default:
                        break;
                }
                pa_data = data->next;
-               early_iounmap(data, PAGE_SIZE);
+               early_iounmap(data, map_len);
        }
 }
 
@@ -680,15 +719,6 @@ static int __init parse_reservelow(char *p)
 
 early_param("reservelow", parse_reservelow);
 
-static u64 __init get_max_mapped(void)
-{
-       u64 end = max_pfn_mapped;
-
-       end <<= PAGE_SHIFT;
-
-       return end;
-}
-
 /*
  * Determine if we were loaded by an EFI loader.  If so, then we have also been
  * passed the efi memmap, systab, etc., so we should use these data structures
@@ -704,8 +734,6 @@ static u64 __init get_max_mapped(void)
 
 void __init setup_arch(char **cmdline_p)
 {
-       int acpi = 0;
-       int amd = 0;
        unsigned long flags;
 
 #ifdef CONFIG_X86_32
@@ -935,15 +963,8 @@ void __init setup_arch(char **cmdline_p)
        printk(KERN_DEBUG "initial memory mapped : 0 - %08lx\n",
                        max_pfn_mapped<<PAGE_SHIFT);
 
-       reserve_trampoline_memory();
+       setup_trampolines();
 
-#ifdef CONFIG_ACPI_SLEEP
-       /*
-        * Reserve low memory region for sleep support.
-        * even before init_memory_mapping
-        */
-       acpi_reserve_wakeup_memory();
-#endif
        init_gbpages();
 
        /* max_pfn_mapped is updated here */
@@ -984,19 +1005,7 @@ void __init setup_arch(char **cmdline_p)
 
        early_acpi_boot_init();
 
-#ifdef CONFIG_ACPI_NUMA
-       /*
-        * Parse SRAT to discover nodes.
-        */
-       acpi = acpi_numa_init();
-#endif
-
-#ifdef CONFIG_AMD_NUMA
-       if (!acpi)
-               amd = !amd_numa_init(0, max_pfn);
-#endif
-
-       initmem_init(0, max_pfn, acpi, amd);
+       initmem_init();
        memblock_find_dma_reserve();
        dma32_reserve_bootmem();
 
@@ -1029,8 +1038,8 @@ void __init setup_arch(char **cmdline_p)
         * Read APIC and some other early information from ACPI tables.
         */
        acpi_boot_init();
-
        sfi_init();
+       x86_dtb_init();
 
        /*
         * get boot-time SMP configuration:
@@ -1040,9 +1049,7 @@ void __init setup_arch(char **cmdline_p)
 
        prefill_possible_map();
 
-#ifdef CONFIG_X86_64
        init_cpu_to_node();
-#endif
 
        init_apic_mappings();
        ioapic_and_gsi_init();
@@ -1066,6 +1073,8 @@ void __init setup_arch(char **cmdline_p)
 #endif
        x86_init.oem.banner();
 
+       x86_init.timers.wallclock_init();
+
        mcheck_init();
 
        local_irq_save(flags);