d4c5fc0e8e
To avoid having to calculate the length of a struct separately, rework the code to give the struct a tag name, so that `sizeof()` can be used instead. This involves refactoring the `get_emi_eeprom_vpd()` function to return a struct instead of a union, so callers can no longer access the EEPROM data as an array of bytes without additional code, but this array view is only used inside `get_emi_eeprom_vpd()` when reading the data from EMI. Change-Id: Id1bc40939631baa131b5f60eadbfe42838294ebe Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/73983 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com> Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
|
|
#ifndef ATLAS_VPD_H
|
|
#define ATLAS_VPD_H
|
|
|
|
/*
|
|
* The Atlas COMe module stores some non-volatile vital product data in
|
|
* an EC-attached I2C EEPROM. The EC firmware reads the EEPROM contents
|
|
* and provides them to the host via EMI (Embedded Memory Interface) 0.
|
|
*/
|
|
|
|
#include <types.h>
|
|
|
|
#define VPD_MAGIC 0x56504453 /* 'VPDS' */
|
|
|
|
/*
|
|
* Increment this value whenever new fields are added to the structures.
|
|
* Furthermore, adapt the `get_emi_eeprom_vpd()` function accordingly to
|
|
* provide fallback values for newly-added fields.
|
|
*/
|
|
#define VPD_LATEST_REVISION 1
|
|
|
|
struct __packed emi_eeprom_vpd_header {
|
|
uint32_t magic;
|
|
uint8_t revision;
|
|
uint8_t _rfu[15]; /* Reserved for Future Use */
|
|
};
|
|
|
|
/* For backwards compatibility reasons, do NOT reuse enum values! */
|
|
enum atlas_profile {
|
|
ATLAS_PROF_UNPROGRAMMED = 0, /* EEPROM not initialised */
|
|
ATLAS_PROF_DEFAULT = 1,
|
|
ATLAS_PROF_REALTIME_PERFORMANCE = 2,
|
|
ATLAS_PROF_THEMIS_LED_CONFIG = 3,
|
|
};
|
|
|
|
#define ATLAS_SN_PN_LENGTH 20
|
|
|
|
struct __packed emi_eeprom_vpd {
|
|
struct emi_eeprom_vpd_header header;
|
|
char serial_number[ATLAS_SN_PN_LENGTH]; /* xx-xx-xxx-xxx */
|
|
char part_number[ATLAS_SN_PN_LENGTH]; /* xxx-xxxx-xxxx.Rxx */
|
|
uint16_t profile;
|
|
};
|
|
|
|
/* Always returns a non-NULL pointer to valid data */
|
|
const struct emi_eeprom_vpd *get_emi_eeprom_vpd(void);
|
|
|
|
#endif /* ATLAS_VPD_H */
|