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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __CPU_X86_SAVE_STATE_H__
#define __CPU_X86_SAVE_STATE_H__
#include <stdint.h>
enum cpu_reg {
RAX,
RBX,
RCX,
RDX
};
#define SMM_REV_INVALID 0xffffffff
struct smm_save_state_ops {
const uint32_t *revision_table;
/* Accessors for CPU registers in the SMM save state
Returns -1 on failure, 0 on success */
int (*get_reg)(const enum cpu_reg reg, const int node, void *out, const uint8_t length);
int (*set_reg)(const enum cpu_reg reg, const int node, void *in, const uint8_t length);
/* Returns -1 on failure, the node on which the 'cmd' was send on success */
int (*apmc_node)(u8 cmd);
};
/* Return -1 on failure, otherwise returns which CPU node issued an APMC IO write */
int get_apmc_node(u8 cmd);
/* Return -1 on failure, 0 on success.
Accessors for the SMM save state CPU registers RAX, RBX, RCX and RDX */
int get_save_state_reg(const enum cpu_reg reg, const int node, void *out, const uint8_t length);
int set_save_state_reg(const enum cpu_reg reg, const int node, void *in, const uint8_t length);
#endif /* __CPU_X86_SAVE_STATE_H__ */
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