Merge branches 'x86/acpi', 'x86/asm', 'x86/cpudetect', 'x86/crashdump', 'x86/debug...

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / relocate_kernel_64.S

diff --git a/arch/x86/kernel/relocate_kernel_64.S b/arch/x86/kernel/relocate_kernel_64.S
index 14e95872c6a3aef01c32889d5a78586c2c0780f4..b0bbdd4829c9669463e11cdbd13bb841c8c0ac16 100644 (file)
--- a/arch/x86/kernel/relocate_kernel_64.S
+++ b/arch/x86/kernel/relocate_kernel_64.S
@@ -9,17 +9,18 @@
 #include <linux/linkage.h>
 #include <asm/page.h>
 #include <asm/kexec.h>
+#include <asm/processor-flags.h>
+#include <asm/pgtable.h>
 
 /*
  * Must be relocatable PIC code callable as a C function
  */
 
 #define PTR(x) (x << 3)
-#define PAGE_ALIGNED (1 << PAGE_SHIFT)
-#define PAGE_ATTR 0x63 /* _PAGE_PRESENT|_PAGE_RW|_PAGE_ACCESSED|_PAGE_DIRTY */
+#define PAGE_ATTR (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
 
        .text
-       .align PAGE_ALIGNED
+       .align PAGE_SIZE
        .code64
        .globl relocate_kernel
 relocate_kernel:
@@ -28,122 +29,6 @@ relocate_kernel:
         * %rdx start address
         */
 
-       /* map the control page at its virtual address */
-
-       movq    $0x0000ff8000000000, %r10        /* mask */
-       mov     $(39 - 3), %cl                   /* bits to shift */
-       movq    PTR(VA_CONTROL_PAGE)(%rsi), %r11 /* address to map */
-
-       movq    %r11, %r9
-       andq    %r10, %r9
-       shrq    %cl, %r9
-
-       movq    PTR(VA_PGD)(%rsi), %r8
-       addq    %r8, %r9
-       movq    PTR(PA_PUD_0)(%rsi), %r8
-       orq     $PAGE_ATTR, %r8
-       movq    %r8, (%r9)
-
-       shrq    $9, %r10
-       sub     $9, %cl
-
-       movq    %r11, %r9
-       andq    %r10, %r9
-       shrq    %cl, %r9
-
-       movq    PTR(VA_PUD_0)(%rsi), %r8
-       addq    %r8, %r9
-       movq    PTR(PA_PMD_0)(%rsi), %r8
-       orq     $PAGE_ATTR, %r8
-       movq    %r8, (%r9)
-
-       shrq    $9, %r10
-       sub     $9, %cl
-
-       movq    %r11, %r9
-       andq    %r10, %r9
-       shrq    %cl, %r9
-
-       movq    PTR(VA_PMD_0)(%rsi), %r8
-       addq    %r8, %r9
-       movq    PTR(PA_PTE_0)(%rsi), %r8
-       orq     $PAGE_ATTR, %r8
-       movq    %r8, (%r9)
-
-       shrq    $9, %r10
-       sub     $9, %cl
-
-       movq    %r11, %r9
-       andq    %r10, %r9
-       shrq    %cl, %r9
-
-       movq    PTR(VA_PTE_0)(%rsi), %r8
-       addq    %r8, %r9
-       movq    PTR(PA_CONTROL_PAGE)(%rsi), %r8
-       orq     $PAGE_ATTR, %r8
-       movq    %r8, (%r9)
-
-       /* identity map the control page at its physical address */
-
-       movq    $0x0000ff8000000000, %r10        /* mask */
-       mov     $(39 - 3), %cl                   /* bits to shift */
-       movq    PTR(PA_CONTROL_PAGE)(%rsi), %r11 /* address to map */
-
-       movq    %r11, %r9
-       andq    %r10, %r9
-       shrq    %cl, %r9
-
-       movq    PTR(VA_PGD)(%rsi), %r8
-       addq    %r8, %r9
-       movq    PTR(PA_PUD_1)(%rsi), %r8
-       orq     $PAGE_ATTR, %r8
-       movq    %r8, (%r9)
-
-       shrq    $9, %r10
-       sub     $9, %cl
-
-       movq    %r11, %r9
-       andq    %r10, %r9
-       shrq    %cl, %r9
-
-       movq    PTR(VA_PUD_1)(%rsi), %r8
-       addq    %r8, %r9
-       movq    PTR(PA_PMD_1)(%rsi), %r8
-       orq     $PAGE_ATTR, %r8
-       movq    %r8, (%r9)
-
-       shrq    $9, %r10
-       sub     $9, %cl
-
-       movq    %r11, %r9
-       andq    %r10, %r9
-       shrq    %cl, %r9
-
-       movq    PTR(VA_PMD_1)(%rsi), %r8
-       addq    %r8, %r9
-       movq    PTR(PA_PTE_1)(%rsi), %r8
-       orq     $PAGE_ATTR, %r8
-       movq    %r8, (%r9)
-
-       shrq    $9, %r10
-       sub     $9, %cl
-
-       movq    %r11, %r9
-       andq    %r10, %r9
-       shrq    %cl, %r9
-
-       movq    PTR(VA_PTE_1)(%rsi), %r8
-       addq    %r8, %r9
-       movq    PTR(PA_CONTROL_PAGE)(%rsi), %r8
-       orq     $PAGE_ATTR, %r8
-       movq    %r8, (%r9)
-
-relocate_new_kernel:
-       /* %rdi indirection_page
-        * %rsi page_list
-        * %rdx start address
-        */
-
        /* zero out flags, and disable interrupts */
        pushq $0
        popfq
@@ -155,12 +40,11 @@ relocate_new_kernel:
        /* get physical address of page table now too */
        movq    PTR(PA_TABLE_PAGE)(%rsi), %rcx
 
-       /* switch to new set of page tables */
-       movq    PTR(PA_PGD)(%rsi), %r9
-       movq    %r9, %cr3
+       /* Switch to the identity mapped page tables */
+       movq    %rcx, %cr3
 
        /* setup a new stack at the end of the physical control page */
-       lea     4096(%r8), %rsp
+       lea     PAGE_SIZE(%r8), %rsp
 
        /* jump to identity mapped page */
        addq    $(identity_mapped - relocate_kernel), %r8
@@ -172,41 +56,28 @@ identity_mapped:
        pushq   %rdx
 
        /* Set cr0 to a known state:
-        * 31 1 == Paging enabled
-        * 18 0 == Alignment check disabled
-        * 16 0 == Write protect disabled
-        * 3  0 == No task switch
-        * 2  0 == Don't do FP software emulation.
-        * 0  1 == Proctected mode enabled
+        *  - Paging enabled
+        *  - Alignment check disabled
+        *  - Write protect disabled
+        *  - No task switch
+        *  - Don't do FP software emulation.
+        *  - Proctected mode enabled
         */
        movq    %cr0, %rax
-       andq    $~((1<<18)|(1<<16)|(1<<3)|(1<<2)), %rax
-       orl     $((1<<31)|(1<<0)), %eax
+       andq    $~(X86_CR0_AM | X86_CR0_WP | X86_CR0_TS | X86_CR0_EM), %rax
+       orl     $(X86_CR0_PG | X86_CR0_PE), %eax
        movq    %rax, %cr0
 
        /* Set cr4 to a known state:
-        * 10 0 == xmm exceptions disabled
-        * 9  0 == xmm registers instructions disabled
-        * 8  0 == performance monitoring counter disabled
-        * 7  0 == page global disabled
-        * 6  0 == machine check exceptions disabled
-        * 5  1 == physical address extension enabled
-        * 4  0 == page size extensions disabled
-        * 3  0 == Debug extensions disabled
-        * 2  0 == Time stamp disable (disabled)
-        * 1  0 == Protected mode virtual interrupts disabled
-        * 0  0 == VME disabled
+        *  - physical address extension enabled
         */
-
-       movq    $((1<<5)), %rax
+       movq    $X86_CR4_PAE, %rax
        movq    %rax, %cr4
 
        jmp 1f
 1:
 
-       /* Switch to the identity mapped page tables,
-        * and flush the TLB.
-       */
+       /* Flush the TLB (needed?) */
        movq    %rcx, %cr3
 
        /* Do the copies */