x86: Move paging functions into cpu.c
These functions really don't belong in physmem as they relate to the
cpu. Move them.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c
index 623e3af..7a4de29 100644
--- a/arch/x86/cpu/cpu.c
+++ b/arch/x86/cpu/cpu.c
@@ -240,3 +240,38 @@
{
return 1;
}
+
+void cpu_enable_paging_pae(ulong cr3)
+{
+ __asm__ __volatile__(
+ /* Load the page table address */
+ "movl %0, %%cr3\n"
+ /* Enable pae */
+ "movl %%cr4, %%eax\n"
+ "orl $0x00000020, %%eax\n"
+ "movl %%eax, %%cr4\n"
+ /* Enable paging */
+ "movl %%cr0, %%eax\n"
+ "orl $0x80000000, %%eax\n"
+ "movl %%eax, %%cr0\n"
+ :
+ : "r" (cr3)
+ : "eax");
+}
+
+void cpu_disable_paging_pae(void)
+{
+ /* Turn off paging */
+ __asm__ __volatile__ (
+ /* Disable paging */
+ "movl %%cr0, %%eax\n"
+ "andl $0x7fffffff, %%eax\n"
+ "movl %%eax, %%cr0\n"
+ /* Disable pae */
+ "movl %%cr4, %%eax\n"
+ "andl $0xffffffdf, %%eax\n"
+ "movl %%eax, %%cr4\n"
+ :
+ :
+ : "eax");
+}