m68knommu: fix misnamed GPIO pin definition for ColdFire 528x CPU

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

diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c
index 8e6ab61378524586a421475acfbf80edb4e6cadc..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
@@ -78,29 +86,18 @@ void __init setup_real_mode(void)
        *trampoline_cr4_features = read_cr4();
 
        trampoline_pgd = (u64 *) __va(real_mode_header->trampoline_pgd);
-
-       /*
-        * Create an identity mapping for all of physical memory.
-        */
-       for (i = 0; i <= pgd_index(max_pfn << PAGE_SHIFT); i++) {
-               int index = pgd_index(PAGE_OFFSET) + i;
-
-               trampoline_pgd[i] = (u64)pgd_val(swapper_pg_dir[index]);
-       }
-
-       /*
-        * Copy the upper-half of the kernel pages tables.
-        */
-       for (i = pgd_index(PAGE_OFFSET); i < PTRS_PER_PGD; i++)
-               trampoline_pgd[i] = (u64)pgd_val(swapper_pg_dir[i]);
+       trampoline_pgd[0] = init_level4_pgt[pgd_index(__PAGE_OFFSET)].pgd;
+       trampoline_pgd[511] = init_level4_pgt[511].pgd;
 #endif
 }
 
 /*
- * set_real_mode_permissions() gets called very early, to guarantee the
- * availability of low memory.  This is before the proper kernel page
+ * 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.  Thus, we use an arch_initcall instead.
+ * function. Also trampoline code will be executed by APs so we
+ * need to mark it executable at do_pre_smp_initcalls() at least,
+ * thus run it as a early_initcall().
  */
 static int __init set_real_mode_permissions(void)
 {
@@ -124,5 +121,4 @@ static int __init set_real_mode_permissions(void)
 
        return 0;
 }
-
-arch_initcall(set_real_mode_permissions);
+early_initcall(set_real_mode_permissions);