1 files changed, 0 insertions, 174 deletions

diff --git a/arch/i386/boot/pm.c b/arch/i386/boot/pm.c
deleted file mode 100644
index 09fb342cc62e..000000000000
--- a/arch/i386/boot/pm.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/* -*- linux-c -*- ------------------------------------------------------- *
- *
- *   Copyright (C) 1991, 1992 Linus Torvalds
- *   Copyright 2007 rPath, Inc. - All Rights Reserved
- *
- *   This file is part of the Linux kernel, and is made available under
- *   the terms of the GNU General Public License version 2.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * arch/i386/boot/pm.c
- *
- * Prepare the machine for transition to protected mode.
- */
-
-#include "boot.h"
-#include <asm/segment.h>
-
-/*
- * Invoke the realmode switch hook if present; otherwise
- * disable all interrupts.
- */
-static void realmode_switch_hook(void)
-{
-        if (boot_params.hdr.realmode_swtch) {
-                asm volatile("lcallw *%0"
-                             : : "m" (boot_params.hdr.realmode_swtch)
-                             : "eax", "ebx", "ecx", "edx");
-        } else {
-                asm volatile("cli");
-                outb(0x80, 0x70); /* Disable NMI */
-                io_delay();
-        }
-}
-
-/*
- * A zImage kernel is loaded at 0x10000 but wants to run at 0x1000.
- * A bzImage kernel is loaded and runs at 0x100000.
- */
-static void move_kernel_around(void)
-{
-        /* Note: rely on the compile-time option here rather than
-           the LOADED_HIGH flag.  The Qemu kernel loader unconditionally
-           sets the loadflags to zero. */
-#ifndef __BIG_KERNEL__
-        u16 dst_seg, src_seg;
-        u32 syssize;
-
-        dst_seg =  0x1000 >> 4;
-        src_seg = 0x10000 >> 4;
-        syssize = boot_params.hdr.syssize; /* Size in 16-byte paragraphs */
-
-        while (syssize) {
-                int paras  = (syssize >= 0x1000) ? 0x1000 : syssize;
-                int dwords = paras << 2;
-
-                asm volatile("pushw %%es ; "
-                             "pushw %%ds ; "
-                             "movw %1,%%es ; "
-                             "movw %2,%%ds ; "
-                             "xorw %%di,%%di ; "
-                             "xorw %%si,%%si ; "
-                             "rep;movsl ; "
-                             "popw %%ds ; "
-                             "popw %%es"
-                             : "+c" (dwords)
-                             : "r" (dst_seg), "r" (src_seg)
-                             : "esi", "edi");
-
-                syssize -= paras;
-                dst_seg += paras;
-                src_seg += paras;
-        }
-#endif
-}
-
-/*
- * Disable all interrupts at the legacy PIC.
- */
-static void mask_all_interrupts(void)
-{
-        outb(0xff, 0xa1);       /* Mask all interrupts on the secondary PIC */
-        io_delay();
-        outb(0xfb, 0x21);       /* Mask all but cascade on the primary PIC */
-        io_delay();
-}
-
-/*
- * Reset IGNNE# if asserted in the FPU.
- */
-static void reset_coprocessor(void)
-{
-        outb(0, 0xf0);
-        io_delay();
-        outb(0, 0xf1);
-        io_delay();
-}
-
-/*
- * Set up the GDT
- */
-#define GDT_ENTRY(flags,base,limit)             \
-        (((u64)(base & 0xff000000) << 32) |     \
-         ((u64)flags << 40) |                   \
-         ((u64)(limit & 0x00ff0000) << 32) |    \
-         ((u64)(base & 0x00ffff00) << 16) |     \
-         ((u64)(limit & 0x0000ffff)))
-
-struct gdt_ptr {
-        u16 len;
-        u32 ptr;
-} __attribute__((packed));
-
-static void setup_gdt(void)
-{
-        /* There are machines which are known to not boot with the GDT
-           being 8-byte unaligned.  Intel recommends 16 byte alignment. */
-        static const u64 boot_gdt[] __attribute__((aligned(16))) = {
-                /* CS: code, read/execute, 4 GB, base 0 */
-                [GDT_ENTRY_BOOT_CS] = GDT_ENTRY(0xc09b, 0, 0xfffff),
-                /* DS: data, read/write, 4 GB, base 0 */
-                [GDT_ENTRY_BOOT_DS] = GDT_ENTRY(0xc093, 0, 0xfffff),
-        };
-        /* Xen HVM incorrectly stores a pointer to the gdt_ptr, instead
-           of the gdt_ptr contents.  Thus, make it static so it will
-           stay in memory, at least long enough that we switch to the
-           proper kernel GDT. */
-        static struct gdt_ptr gdt;
-
-        gdt.len = sizeof(boot_gdt)-1;
-        gdt.ptr = (u32)&boot_gdt + (ds() << 4);
-
-        asm volatile("lgdtl %0" : : "m" (gdt));
-}
-
-/*
- * Set up the IDT
- */
-static void setup_idt(void)
-{
-        static const struct gdt_ptr null_idt = {0, 0};
-        asm volatile("lidtl %0" : : "m" (null_idt));
-}
-
-/*
- * Actual invocation sequence
- */
-void go_to_protected_mode(void)
-{
-        /* Hook before leaving real mode, also disables interrupts */
-        realmode_switch_hook();
-
-        /* Move the kernel/setup to their final resting places */
-        move_kernel_around();
-
-        /* Enable the A20 gate */
-        if (enable_a20()) {
-                puts("A20 gate not responding, unable to boot...\n");
-                die();
-        }
-
-        /* Reset coprocessor (IGNNE#) */
-        reset_coprocessor();
-
-        /* Mask all interrupts in the PIC */
-        mask_all_interrupts();
-
-        /* Actual transition to protected mode... */
-        setup_idt();
-        setup_gdt();
-        protected_mode_jump(boot_params.hdr.code32_start,
-                            (u32)&boot_params + (ds() << 4));
-}