upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
139 lines
4.4 KiB
139 lines
4.4 KiB
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* (C) Copyright 2017
|
|
* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
|
|
*/
|
|
|
|
/*
|
|
* This uclass encapsulates hardware methods to gather information about a
|
|
* board 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 board had a read-only serial number flash IC, we could
|
|
* call
|
|
*
|
|
* ret = board_detect(dev);
|
|
* if (ret) {
|
|
* debug("board device not found.");
|
|
* return ret;
|
|
* }
|
|
*
|
|
* ret = board_get_int(dev, ID_SERIAL_NUMBER, &serial);
|
|
* if (ret) {
|
|
* debug("Error when reading serial number from device.");
|
|
* return ret;
|
|
* }
|
|
*
|
|
* to read the serial number.
|
|
*/
|
|
|
|
struct board_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.
|
|
*
|
|
* 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 board 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 board 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 board 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);
|
|
};
|
|
|
|
#define board_get_ops(dev) ((struct board_ops *)(dev)->driver->ops)
|
|
|
|
/**
|
|
* board_detect() - Run the hardware info detection procedure for this device.
|
|
*
|
|
* @dev: The device containing the information
|
|
*
|
|
* Return: 0 if OK, -ve on error.
|
|
*/
|
|
int board_detect(struct udevice *dev);
|
|
|
|
/**
|
|
* board_get_bool() - Read a specific bool data value that describes the
|
|
* hardware setup.
|
|
* @dev: The board 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 board_get_bool(struct udevice *dev, int id, bool *val);
|
|
|
|
/**
|
|
* board_get_int() - Read a specific int data value that describes the
|
|
* hardware setup.
|
|
* @dev: The board 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 board_get_int(struct udevice *dev, int id, int *val);
|
|
|
|
/**
|
|
* board_get_str() - Read a specific string data value that describes the
|
|
* hardware setup.
|
|
* @dev: The board 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 board_get_str(struct udevice *dev, int id, size_t size, char *val);
|
|
|
|
/**
|
|
* board_get() - Return the board device for the board in question.
|
|
* @devp: Pointer to structure to receive the board device.
|
|
*
|
|
* Since there can only be at most one board instance, the API can supply a
|
|
* function that returns the unique device. This is especially useful for use
|
|
* in board files.
|
|
*
|
|
* Return: 0 if OK, -ve on error.
|
|
*/
|
|
int board_get(struct udevice **devp);
|
|
|