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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2017
* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
*/
#ifndef __SYSINFO_H__
#define __SYSINFO_H__
#include <linux/errno.h>
struct udevice;
#define SYSINFO_CACHE_LVL_MAX 3
/*
* This uclass encapsulates hardware methods to gather information about a
* sysinfo or a specific device such as hard-wired GPIOs on GPIO expanders,
* read-only data in flash ICs, or similar.
*
* The interface offers functions to read the usual standard data types (bool,
* int, string) from the device, each of which is identified by a static
* numeric ID (which will usually be defined as a enum in a header file).
*
* If for example the sysinfo had a read-only serial number flash IC, we could
* call
*
* ret = sysinfo_detect(dev);
* if (ret) {
* debug("sysinfo device not found.");
* return ret;
* }
*
* ret = sysinfo_get_int(dev, ID_SERIAL_NUMBER, &serial);
* if (ret) {
* debug("Error when reading serial number from device.");
* return ret;
* }
*
* to read the serial number.
*/
/** enum sysinfo_id - Standard IDs defined by U-Boot */
enum sysinfo_id {
SYSID_NONE,
/* BIOS Information (Type 0) */
SYSID_SM_BIOS_VENDOR,
SYSID_SM_BIOS_VER,
SYSID_SM_BIOS_REL_DATE,
/* System Information (Type 1) */
SYSID_SM_SYSTEM_MANUFACTURER,
SYSID_SM_SYSTEM_PRODUCT,
SYSID_SM_SYSTEM_VERSION,
SYSID_SM_SYSTEM_SERIAL,
SYSID_SM_SYSTEM_WAKEUP,
SYSID_SM_SYSTEM_SKU,
SYSID_SM_SYSTEM_FAMILY,
/* Baseboard (or Module) Information (Type 2) */
SYSID_SM_BASEBOARD_MANUFACTURER,
SYSID_SM_BASEBOARD_PRODUCT,
SYSID_SM_BASEBOARD_VERSION,
SYSID_SM_BASEBOARD_SERIAL,
SYSID_SM_BASEBOARD_ASSET_TAG,
SYSID_SM_BASEBOARD_FEATURE,
SYSID_SM_BASEBOARD_CHASSIS_LOCAT,
SYSID_SM_BASEBOARD_TYPE,
SYSID_SM_BASEBOARD_OBJS_NUM,
SYSID_SM_BASEBOARD_OBJS_HANDLE,
/* System Enclosure or Chassis (Type 3) */
SYSID_SM_ENCLOSURE_MANUFACTURER,
SYSID_SM_ENCLOSURE_VERSION,
SYSID_SM_ENCLOSURE_SERIAL,
SYSID_SM_ENCLOSURE_ASSET_TAG,
SYSID_SM_ENCLOSURE_TYPE,
SYSID_SM_ENCLOSURE_BOOTUP,
SYSID_SM_ENCLOSURE_POW,
SYSID_SM_ENCLOSURE_THERMAL,
SYSID_SM_ENCLOSURE_SECURITY,
SYSID_SM_ENCLOSURE_OEM,
SYSID_SM_ENCLOSURE_HEIGHT,
SYSID_SM_ENCLOSURE_POWCORE_NUM,
SYSID_SM_ENCLOSURE_ELEMENT_CNT,
SYSID_SM_ENCLOSURE_ELEMENT_LEN,
SYSID_SM_ENCLOSURE_ELEMENTS,
SYSID_SM_ENCLOSURE_SKU,
/* Processor Information (Type 4) */
SYSID_SM_PROCESSOR_SOCKET,
SYSID_SM_PROCESSOR_TYPE,
SYSID_SM_PROCESSOR_MANUFACT,
SYSID_SM_PROCESSOR_ID,
SYSID_SM_PROCESSOR_VERSION,
SYSID_SM_PROCESSOR_VOLTAGE,
SYSID_SM_PROCESSOR_EXT_CLOCK,
SYSID_SM_PROCESSOR_MAX_SPEED,
SYSID_SM_PROCESSOR_CUR_SPEED,
SYSID_SM_PROCESSOR_STATUS,
SYSID_SM_PROCESSOR_UPGRADE,
SYSID_SM_PROCESSOR_SN,
SYSID_SM_PROCESSOR_ASSET_TAG,
SYSID_SM_PROCESSOR_PN,
SYSID_SM_PROCESSOR_CORE_CNT,
SYSID_SM_PROCESSOR_CORE_EN,
SYSID_SM_PROCESSOR_THREAD_CNT,
SYSID_SM_PROCESSOR_CHARA,
SYSID_SM_PROCESSOR_FAMILY,
SYSID_SM_PROCESSOR_FAMILY2,
SYSID_SM_PROCESSOR_CORE_CNT2,
SYSID_SM_PROCESSOR_CORE_EN2,
SYSID_SM_PROCESSOR_THREAD_CNT2,
SYSID_SM_PROCESSOR_THREAD_EN,
/*
* Cache Information (Type 7)
* Each of the id should reserve space for up to
* SYSINFO_CACHE_LVL_MAX levels of cache
*/
SYSID_SM_CACHE_LEVEL,
SYSID_SM_CACHE_HANDLE,
SYSID_SM_CACHE_INFO_START,
SYSID_SM_CACHE_SOCKET = SYSID_SM_CACHE_INFO_START,
SYSID_SM_CACHE_CONFIG =
SYSID_SM_CACHE_SOCKET + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_MAX_SIZE =
SYSID_SM_CACHE_CONFIG + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_INST_SIZE =
SYSID_SM_CACHE_MAX_SIZE + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_SUPSRAM_TYPE =
SYSID_SM_CACHE_INST_SIZE + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_CURSRAM_TYPE =
SYSID_SM_CACHE_SUPSRAM_TYPE + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_SPEED =
SYSID_SM_CACHE_CURSRAM_TYPE + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_ERRCOR_TYPE =
SYSID_SM_CACHE_SPEED + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_SCACHE_TYPE =
SYSID_SM_CACHE_ERRCOR_TYPE + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_ASSOC =
SYSID_SM_CACHE_SCACHE_TYPE + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_MAX_SIZE2 =
SYSID_SM_CACHE_ASSOC + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_INST_SIZE2 =
SYSID_SM_CACHE_MAX_SIZE2 + SYSINFO_CACHE_LVL_MAX,
SYSID_SM_CACHE_INFO_END =
SYSID_SM_CACHE_INST_SIZE2 + SYSINFO_CACHE_LVL_MAX - 1,
/* For show_board_info() */
SYSID_BOARD_MODEL,
SYSID_BOARD_MANUFACTURER,
SYSID_PRIOR_STAGE_VERSION,
SYSID_PRIOR_STAGE_DATE,
/* First value available for downstream/board used */
SYSID_USER = 0x1000,
};
struct sysinfo_ops {
/**
* detect() - Run the hardware info detection procedure for this
* device.
* @dev: The device containing the information
*
* This operation might take a long time (e.g. read from EEPROM,
* check the presence of a device on a bus etc.), hence this is not
* done in the probe() method, but later during operation in this
* dedicated method. This method will be called before any other
* methods.
*
* Return: 0 if OK, -ve on error.
*/
int (*detect)(struct udevice *dev);
/**
* get_bool() - Read a specific bool data value that describes the
* hardware setup.
* @dev: The sysinfo instance to gather the data.
* @id: A unique identifier for the bool value to be read.
* @val: Pointer to a buffer that receives the value read.
*
* Return: 0 if OK, -ve on error.
*/
int (*get_bool)(struct udevice *dev, int id, bool *val);
/**
* get_int() - Read a specific int data value that describes the
* hardware setup.
* @dev: The sysinfo instance to gather the data.
* @id: A unique identifier for the int value to be read.
* @val: Pointer to a buffer that receives the value read.
*
* Return: 0 if OK, -ve on error.
*/
int (*get_int)(struct udevice *dev, int id, int *val);
/**
* get_str() - Read a specific string data value that describes the
* hardware setup.
* @dev: The sysinfo instance to gather the data.
* @id: A unique identifier for the string value to be read.
* @size: The size of the buffer to receive the string data.
* @val: Pointer to a buffer that receives the value read.
*
* Return: 0 if OK, -ve on error.
*/
int (*get_str)(struct udevice *dev, int id, size_t size, char *val);
/**
* get_data() - Read a specific string data value that describes the
* hardware setup.
* @dev: The sysinfo instance to gather the data.
* @id: A unique identifier for the data area to be get.
* @data: Pointer to the address of the data area.
* @size: Pointer to the size of the data area.
*
* Return: 0 if OK, -ve on error.
*/
int (*get_data)(struct udevice *dev, int id, void **data, size_t *size);
/**
* get_fit_loadable - Get the name of an image to load from FIT
* This function can be used to provide the image names based on runtime
* detection. A classic use-case would when DTBOs are used to describe
* additional daughter cards.
*
* @dev: The sysinfo instance to gather the data.
* @index: Index of the image. Starts at 0 and gets incremented
* after each call to this function.
* @type: The type of image. For example, "fdt" for DTBs
* @strp: A pointer to string. Untouched if the function fails
*
* Return: 0 if OK, -ENOENT if no loadable is available else -ve on
* error.
*/
int (*get_fit_loadable)(struct udevice *dev, int index,
const char *type, const char **strp);
};
#define sysinfo_get_ops(dev) ((struct sysinfo_ops *)(dev)->driver->ops)
#if CONFIG_IS_ENABLED(SYSINFO)
/**
* sysinfo_detect() - Run the hardware info detection procedure for this device.
*
* @dev: The device containing the information
*
* This function must be called before any other accessor function for this
* device.
*
* Return: 0 if OK, -ve on error.
*/
int sysinfo_detect(struct udevice *dev);
/**
* sysinfo_get_bool() - Read a specific bool data value that describes the
* hardware setup.
* @dev: The sysinfo instance to gather the data.
* @id: A unique identifier for the bool value to be read.
* @val: Pointer to a buffer that receives the value read.
*
* Return: 0 if OK, -EPERM if called before sysinfo_detect(), else -ve on
* error.
*/
int sysinfo_get_bool(struct udevice *dev, int id, bool *val);
/**
* sysinfo_get_int() - Read a specific int data value that describes the
* hardware setup.
* @dev: The sysinfo instance to gather the data.
* @id: A unique identifier for the int value to be read.
* @val: Pointer to a buffer that receives the value read.
*
* Return: 0 if OK, -EPERM if called before sysinfo_detect(), else -ve on
* error.
*/
int sysinfo_get_int(struct udevice *dev, int id, int *val);
/**
* sysinfo_get_str() - Read a specific string data value that describes the
* hardware setup.
* @dev: The sysinfo instance to gather the data.
* @id: A unique identifier for the string value to be read.
* @size: The size of the buffer to receive the string data.
* @val: Pointer to a buffer that receives the value read.
*
* Return: 0 if OK, -EPERM if called before sysinfo_detect(), else -ve on
* error.
*/
int sysinfo_get_str(struct udevice *dev, int id, size_t size, char *val);
/**
* sysinfo_get_data() - Get a data area from the platform.
* @dev: The sysinfo instance to gather the data.
* @id: A unique identifier for the data area to be get.
* @data: Pointer to the address of the data area.
* @size: Pointer to the size of the data area.
*
* Return: 0 if OK, -EPERM if called before sysinfo_detect(), else -ve on
* error.
*/
int sysinfo_get_data(struct udevice *dev, int id, void **data, size_t *size);
/**
* sysinfo_get() - Return the sysinfo device for the sysinfo in question.
* @devp: Pointer to structure to receive the sysinfo device.
*
* Since there can only be at most one sysinfo instance, the API can supply a
* function that returns the unique device. This is especially useful for use
* in sysinfo files.
*
* Return: 0 if OK, -EPERM if called before sysinfo_detect(), else -ve on
* error.
*/
int sysinfo_get(struct udevice **devp);
/**
* sysinfo_get_fit_loadable - Get the name of an image to load from FIT
* This function can be used to provide the image names based on runtime
* detection. A classic use-case would when DTBOs are used to describe
* additional daughter cards.
*
* @dev: The sysinfo instance to gather the data.
* @index: Index of the image. Starts at 0 and gets incremented
* after each call to this function.
* @type: The type of image. For example, "fdt" for DTBs
* @strp: A pointer to string. Untouched if the function fails
*
*
* Return: 0 if OK, -EPERM if called before sysinfo_detect(), -ENOENT if no
* loadable is available else -ve on error.
*/
int sysinfo_get_fit_loadable(struct udevice *dev, int index, const char *type,
const char **strp);
#else
static inline int sysinfo_detect(struct udevice *dev)
{
return -ENOSYS;
}
static inline int sysinfo_get_bool(struct udevice *dev, int id, bool *val)
{
return -ENOSYS;
}
static inline int sysinfo_get_int(struct udevice *dev, int id, int *val)
{
return -ENOSYS;
}
static inline int sysinfo_get_str(struct udevice *dev, int id, size_t size,
char *val)
{
return -ENOSYS;
}
static inline int sysinfo_get_data(struct udevice *dev, int id, void **data,
size_t *size)
{
return -ENOSYS;
}
static inline int sysinfo_get(struct udevice **devp)
{
return -ENOSYS;
}
static inline int sysinfo_get_fit_loadable(struct udevice *dev, int index,
const char *type, const char **strp)
{
return -ENOSYS;
}
#endif
#endif