mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-18 17:54:13 +08:00
19 lines
500 B
C
19 lines
500 B
C
|
#include <linux/io.h>
|
||
|
|
|
||
|
|
#include <asm/trampoline.h>
|
||
|
|
|
||
|
|
/* ready for x86_64, no harm for x86, since it will overwrite after alloc */
|
||
|
|
unsigned char *trampoline_base = __va(TRAMPOLINE_BASE);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Currently trivial. Write the real->protected mode
|
||
|
|
* bootstrap into the page concerned. The caller
|
||
|
|
* has made sure it's suitably aligned.
|
||
|
|
*/
|
||
|
|
unsigned long setup_trampoline(void)
|
||
|
|
{
|
||
|
|
memcpy(trampoline_base, trampoline_data,
|
||
|
|
trampoline_end - trampoline_data);
|
||
|
|
return virt_to_phys(trampoline_base);
|
||
|
|
}
|