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#ifndef _ASM_X86_INTEL_PCONFIG_H
#define _ASM_X86_INTEL_PCONFIG_H
#include <asm/asm.h>
#include <asm/processor.h>
enum pconfig_target {
INVALID_TARGET = 0,
MKTME_TARGET = 1,
PCONFIG_TARGET_NR
};
int pconfig_target_supported(enum pconfig_target target);
enum pconfig_leaf {
MKTME_KEY_PROGRAM = 0,
PCONFIG_LEAF_INVALID,
};
#define PCONFIG ".byte 0x0f, 0x01, 0xc5"
/* Defines and structure for MKTME_KEY_PROGRAM of PCONFIG instruction */
/* mktme_key_program::keyid_ctrl COMMAND, bits [7:0] */
#define MKTME_KEYID_SET_KEY_DIRECT 0
#define MKTME_KEYID_SET_KEY_RANDOM 1
#define MKTME_KEYID_CLEAR_KEY 2
#define MKTME_KEYID_NO_ENCRYPT 3
/* mktme_key_program::keyid_ctrl ENC_ALG, bits [23:8] */
#define MKTME_AES_XTS_128 (1 << 8)
/* Return codes from the PCONFIG MKTME_KEY_PROGRAM */
#define MKTME_PROG_SUCCESS 0
#define MKTME_INVALID_PROG_CMD 1
#define MKTME_ENTROPY_ERROR 2
#define MKTME_INVALID_KEYID 3
#define MKTME_INVALID_ENC_ALG 4
#define MKTME_DEVICE_BUSY 5
/* Hardware requires the structure to be 256 byte aligned. Otherwise #GP(0). */
struct mktme_key_program {
u16 keyid;
u32 keyid_ctrl;
u8 __rsvd[58];
u8 key_field_1[64];
u8 key_field_2[64];
} __packed __aligned(256);
static inline int mktme_key_program(struct mktme_key_program *key_program)
{
unsigned long rax = MKTME_KEY_PROGRAM;
if (!pconfig_target_supported(MKTME_TARGET))
return -ENXIO;
asm volatile(PCONFIG
: "=a" (rax), "=b" (key_program)
: "0" (rax), "1" (key_program)
: "memory", "cc");
return rax;
}
#endif /* _ASM_X86_INTEL_PCONFIG_H */