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-rw-r--r--ANDROID_3.4.5/arch/x86/boot/pm.c126
1 files changed, 0 insertions, 126 deletions
diff --git a/ANDROID_3.4.5/arch/x86/boot/pm.c b/ANDROID_3.4.5/arch/x86/boot/pm.c
deleted file mode 100644
index 8062f891..00000000
--- a/ANDROID_3.4.5/arch/x86/boot/pm.c
+++ /dev/null
@@ -1,126 +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.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * 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();
- }
-}
-
-/*
- * 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
- */
-
-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),
- /* TSS: 32-bit tss, 104 bytes, base 4096 */
- /* We only have a TSS here to keep Intel VT happy;
- we don't actually use it for anything. */
- [GDT_ENTRY_BOOT_TSS] = GDT_ENTRY(0x0089, 4096, 103),
- };
- /* 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();
-
- /* 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));
-}