x86, realmode: Move kernel/realmode.c to realmode/init.c

Keep all the realmode code together, including initialization (only
the rm/ subdirectory is actually built as real-mode code, anyway.)

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Jarkko Sakkinen <jarkko.sakkinen@intel.com>

2 files changed, 0 insertions, 117 deletions

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 4a20f4441ffe..08484332f329 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -35,7 +35,6 @@ obj-y			+= tsc.o io_delay.o rtc.o
 obj-y			+= pci-iommu_table.o
 obj-y			+= resource.o
 
-obj-y				+= realmode.o
 obj-y				+= process.o
 obj-y				+= i387.o xsave.o
 obj-y				+= ptrace.o
diff --git a/arch/x86/kernel/realmode.c b/arch/x86/kernel/realmode.c
deleted file mode 100644
index 099277984b80..000000000000
--- a/arch/x86/kernel/realmode.c
+++ /dev/null
@@ -1,116 +0,0 @@
-#include <linux/io.h>
-#include <linux/memblock.h>
-
-#include <asm/cacheflush.h>
-#include <asm/pgtable.h>
-#include <asm/realmode.h>
-
-struct real_mode_header *real_mode_header;
-u32 *trampoline_cr4_features;
-
-void __init setup_real_mode(void)
-{
-	phys_addr_t mem;
-	u16 real_mode_seg;
-	u32 *rel;
-	u32 count;
-	u32 *ptr;
-	u16 *seg;
-	int i;
-	unsigned char *base;
-	struct trampoline_header *trampoline_header;
-	size_t size = PAGE_ALIGN(real_mode_blob_end - real_mode_blob);
-#ifdef CONFIG_X86_64
-	u64 *trampoline_pgd;
-	u32 efer_low, efer_high;
-#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);
-
-	memcpy(base, real_mode_blob, size);
-
-	real_mode_seg = __pa(base) >> 4;
-	rel = (u32 *) real_mode_relocs;
-
-	/* 16-bit segment relocations. */
-	count = rel[0];
-	rel = &rel[1];
-	for (i = 0; i < count; i++) {
-		seg = (u16 *) (base + rel[i]);
-		*seg = real_mode_seg;
-	}
-
-	/* 32-bit linear relocations. */
-	count = rel[i];
-	rel =  &rel[i + 1];
-	for (i = 0; i < count; i++) {
-		ptr = (u32 *) (base + rel[i]);
-		*ptr += __pa(base);
-	}
-
-	/* Must be perfomed *after* relocation. */
-	trampoline_header = (struct trampoline_header *)
-		__va(real_mode_header->trampoline_header);
-
-#ifdef CONFIG_X86_32
-	trampoline_header->start = __pa(startup_32_smp);
-	trampoline_header->gdt_limit = __BOOT_DS + 7;
-	trampoline_header->gdt_base = __pa(boot_gdt);
-#else
-	/*
-	 * Some AMD processors will #GP(0) if EFER.LMA is set in WRMSR
-	 * so we need to mask it out.
-	 */
-	rdmsr(MSR_EFER, efer_low, efer_high);
-	trampoline_header->efer_low  = efer_low & ~EFER_LMA;
-	trampoline_header->efer_high = efer_high;
-
-	trampoline_header->start = (u64) secondary_startup_64;
-	trampoline_cr4_features = &trampoline_header->cr4;
-	*trampoline_cr4_features = read_cr4();
-
-	trampoline_pgd = (u64 *) __va(real_mode_header->trampoline_pgd);
-	trampoline_pgd[0] = __pa(level3_ident_pgt) + _KERNPG_TABLE;
-	trampoline_pgd[511] = __pa(level3_kernel_pgt) + _KERNPG_TABLE;
-#endif
-}
-
-/*
- * set_real_mode_permissions() 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.
- */
-static int __init set_real_mode_permissions(void)
-{
-	unsigned char *base = (unsigned char *) real_mode_header;
-	size_t size = PAGE_ALIGN(real_mode_blob_end - real_mode_blob);
-
-	size_t ro_size =
-		PAGE_ALIGN(real_mode_header->ro_end) -
-		__pa(base);
-
-	size_t text_size =
-		PAGE_ALIGN(real_mode_header->ro_end) -
-		real_mode_header->text_start;
-
-	unsigned long text_start =
-		(unsigned long) __va(real_mode_header->text_start);
-
-	set_memory_nx((unsigned long) base, size >> PAGE_SHIFT);
-	set_memory_ro((unsigned long) base, ro_size >> PAGE_SHIFT);
-	set_memory_x((unsigned long) text_start, text_size >> PAGE_SHIFT);
-
-	return 0;
-}
-
-arch_initcall(set_real_mode_permissions);