]> bbs.cooldavid.org Git - net-next-2.6.git/blame - arch/x86/kernel/trampoline.c
x86 boot: add code to add BIOS provided EFI memory entries to kernel
[net-next-2.6.git] / arch / x86 / kernel / trampoline.c
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IM
1#include <linux/io.h>
2
3#include <asm/trampoline.h>
4
5/* ready for x86_64, no harm for x86, since it will overwrite after alloc */
6unsigned char *trampoline_base = __va(TRAMPOLINE_BASE);
7
8/*
9 * Currently trivial. Write the real->protected mode
10 * bootstrap into the page concerned. The caller
11 * has made sure it's suitably aligned.
12 */
13unsigned long setup_trampoline(void)
14{
15 memcpy(trampoline_base, trampoline_data,
16 trampoline_end - trampoline_data);
17 return virt_to_phys(trampoline_base);
18}