mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 14:45:04 +07:00
d1ee433539
Use the unified trampoline allocation setup to allocate and install the ACPI wakeup code in low memory. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> LKML-Reference: <4D5DFBE4.7090104@intel.com> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Matthieu Castet <castet.matthieu@free.fr> Cc: Stephen Rothwell <sfr@canb.auug.org.au>
40 lines
1.0 KiB
C
40 lines
1.0 KiB
C
#ifndef _ASM_X86_TRAMPOLINE_H
|
|
#define _ASM_X86_TRAMPOLINE_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/io.h>
|
|
|
|
/*
|
|
* Trampoline 80x86 program as an array. These are in the init rodata
|
|
* segment, but that's okay, because we only care about the relative
|
|
* addresses of the symbols.
|
|
*/
|
|
extern const unsigned char x86_trampoline_start [];
|
|
extern const unsigned char x86_trampoline_end [];
|
|
extern unsigned char *x86_trampoline_base;
|
|
|
|
extern unsigned long init_rsp;
|
|
extern unsigned long initial_code;
|
|
extern unsigned long initial_gs;
|
|
|
|
extern void __init setup_trampolines(void);
|
|
|
|
extern const unsigned char trampoline_data[];
|
|
extern const unsigned char trampoline_status[];
|
|
|
|
#define TRAMPOLINE_SYM(x) \
|
|
((void *)(x86_trampoline_base + \
|
|
((const unsigned char *)(x) - x86_trampoline_start)))
|
|
|
|
/* Address of the SMP trampoline */
|
|
static inline unsigned long trampoline_address(void)
|
|
{
|
|
return virt_to_phys(TRAMPOLINE_SYM(trampoline_data));
|
|
}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_X86_TRAMPOLINE_H */
|