Merge remote-tracking branch 'regulator/fix/db8500' into tmp

[~andy/linux] / arch / x86 / realmode / init.c

diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c
index ffee06ac7de9d0a5f0c0a6ddb52a359ce937b6b7..a44f457e70a19f7ffce772c5497e0090ee514db6 100644 (file)
--- a/arch/x86/realmode/init.c
+++ b/arch/x86/realmode/init.c
@@ -8,9 +8,26 @@
 struct real_mode_header *real_mode_header;
 u32 *trampoline_cr4_features;
 
-void __init setup_real_mode(void)
+void __init reserve_real_mode(void)
 {
        phys_addr_t mem;
+       unsigned char *base;
+       size_t size = PAGE_ALIGN(real_mode_blob_end - real_mode_blob);
+
+       /* Has to be under 1M so we can execute real-mode AP code. */
+       mem = memblock_find_in_range(0, 1<<20, size, PAGE_SIZE);
+       if (!mem)
+               panic("Cannot allocate trampoline\n");
+
+       base = __va(mem);
+       memblock_reserve(mem, size);
+       real_mode_header = (struct real_mode_header *) base;
+       printk(KERN_DEBUG "Base memory trampoline at [%p] %llx size %zu\n",
+              base, (unsigned long long)mem, size);
+}
+
+void __init setup_real_mode(void)
+{
        u16 real_mode_seg;
        u32 *rel;
        u32 count;
@@ -25,16 +42,7 @@ void __init setup_real_mode(void)
        u64 efer;
 #endif
 
-       /* Has to be in very low memory so we can execute real-mode AP code. */
-       mem = memblock_find_in_range(0, 1<<20, size, PAGE_SIZE);
-       if (!mem)
-               panic("Cannot allocate trampoline\n");
-
-       base = __va(mem);
-       memblock_reserve(mem, size);
-       real_mode_header = (struct real_mode_header *) base;
-       printk(KERN_DEBUG "Base memory trampoline at [%p] %llx size %zu\n",
-              base, (unsigned long long)mem, size);
+       base = (unsigned char *)real_mode_header;
 
        memcpy(base, real_mode_blob, size);
 
@@ -62,9 +70,9 @@ void __init setup_real_mode(void)
                __va(real_mode_header->trampoline_header);
 
 #ifdef CONFIG_X86_32
-       trampoline_header->start = __pa(startup_32_smp);
+       trampoline_header->start = __pa_symbol(startup_32_smp);
        trampoline_header->gdt_limit = __BOOT_DS + 7;
-       trampoline_header->gdt_base = __pa(boot_gdt);
+       trampoline_header->gdt_base = __pa_symbol(boot_gdt);
 #else
        /*
         * Some AMD processors will #GP(0) if EFER.LMA is set in WRMSR
@@ -84,7 +92,7 @@ void __init setup_real_mode(void)
 }
 
 /*
- * setup_real_mode() gets called very early, to guarantee the
+ * reserve_real_mode() gets called very early, to guarantee the
  * availability of low memory. This is before the proper kernel page
  * tables are set up, so we cannot set page permissions in that
  * function. Also trampoline code will be executed by APs so we