2023-08-30 17:31:07 +02:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
|
#ifndef _ARCH_X86_REALMODE_H
|
|
|
|
|
#define _ARCH_X86_REALMODE_H
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Flag bit definitions for use with the flags field of the trampoline header
|
|
|
|
|
* in the CONFIG_X86_64 variant.
|
|
|
|
|
*/
|
|
|
|
|
#define TH_FLAGS_SME_ACTIVE_BIT 0
|
|
|
|
|
#define TH_FLAGS_SME_ACTIVE BIT(TH_FLAGS_SME_ACTIVE_BIT)
|
|
|
|
|
|
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
|
|
|
|
|
|
#include <linux/types.h>
|
|
|
|
|
#include <asm/io.h>
|
|
|
|
|
|
|
|
|
|
/* This must match data at realmode/rm/header.S */
|
|
|
|
|
struct real_mode_header {
|
|
|
|
|
u32 text_start;
|
|
|
|
|
u32 ro_end;
|
|
|
|
|
/* SMP trampoline */
|
|
|
|
|
u32 trampoline_start;
|
|
|
|
|
u32 trampoline_header;
|
|
|
|
|
#ifdef CONFIG_AMD_MEM_ENCRYPT
|
|
|
|
|
u32 sev_es_trampoline_start;
|
|
|
|
|
#endif
|
|
|
|
|
#ifdef CONFIG_X86_64
|
|
|
|
|
u32 trampoline_start64;
|
|
|
|
|
u32 trampoline_pgd;
|
|
|
|
|
#endif
|
|
|
|
|
/* ACPI S3 wakeup */
|
|
|
|
|
#ifdef CONFIG_ACPI_SLEEP
|
|
|
|
|
u32 wakeup_start;
|
|
|
|
|
u32 wakeup_header;
|
|
|
|
|
#endif
|
|
|
|
|
/* APM/BIOS reboot */
|
|
|
|
|
u32 machine_real_restart_asm;
|
|
|
|
|
#ifdef CONFIG_X86_64
|
|
|
|
|
u32 machine_real_restart_seg;
|
|
|
|
|
#endif
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* This must match data at realmode/rm/trampoline_{32,64}.S */
|
|
|
|
|
struct trampoline_header {
|
|
|
|
|
#ifdef CONFIG_X86_32
|
|
|
|
|
u32 start;
|
|
|
|
|
u16 gdt_pad;
|
|
|
|
|
u16 gdt_limit;
|
|
|
|
|
u32 gdt_base;
|
|
|
|
|
#else
|
|
|
|
|
u64 start;
|
|
|
|
|
u64 efer;
|
|
|
|
|
u32 cr4;
|
|
|
|
|
u32 flags;
|
2023-10-24 12:59:35 +02:00
|
|
|
u32 lock;
|
2023-08-30 17:31:07 +02:00
|
|
|
#endif
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
extern struct real_mode_header *real_mode_header;
|
|
|
|
|
extern unsigned char real_mode_blob_end[];
|
|
|
|
|
|
|
|
|
|
extern unsigned long initial_code;
|
|
|
|
|
extern unsigned long initial_stack;
|
|
|
|
|
#ifdef CONFIG_AMD_MEM_ENCRYPT
|
|
|
|
|
extern unsigned long initial_vc_handler;
|
|
|
|
|
#endif
|
|
|
|
|
|
2023-10-24 12:59:35 +02:00
|
|
|
extern u32 *trampoline_lock;
|
|
|
|
|
|
2023-08-30 17:31:07 +02:00
|
|
|
extern unsigned char real_mode_blob[];
|
|
|
|
|
extern unsigned char real_mode_relocs[];
|
|
|
|
|
|
|
|
|
|
#ifdef CONFIG_X86_32
|
|
|
|
|
extern unsigned char startup_32_smp[];
|
|
|
|
|
extern unsigned char boot_gdt[];
|
|
|
|
|
#else
|
|
|
|
|
extern unsigned char secondary_startup_64[];
|
|
|
|
|
extern unsigned char secondary_startup_64_no_verify[];
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
static inline size_t real_mode_size_needed(void)
|
|
|
|
|
{
|
|
|
|
|
if (real_mode_header)
|
|
|
|
|
return 0; /* already allocated. */
|
|
|
|
|
|
|
|
|
|
return ALIGN(real_mode_blob_end - real_mode_blob, PAGE_SIZE);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline void set_real_mode_mem(phys_addr_t mem)
|
|
|
|
|
{
|
|
|
|
|
real_mode_header = (struct real_mode_header *) __va(mem);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void reserve_real_mode(void);
|
|
|
|
|
void load_trampoline_pgtable(void);
|
|
|
|
|
void init_real_mode(void);
|
|
|
|
|
|
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
|
|
|
|
|
|
#endif /* _ARCH_X86_REALMODE_H */
|
