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sfdp: Begun implementing the machinary needed to read and parse out SFDP headers from SPI Flash

This commit is contained in:
dragonmux 2022-08-05 02:24:01 +01:00 committed by Piotr Esden-Tempski
parent 64c0b8a298
commit c6133a8cae
2 changed files with 122 additions and 0 deletions
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54
src/target/sfdp.h Normal file
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/*
* This file is part of the Black Magic Debug project.
*
* Copyright (C) 2022 1BitSquared <info@1bitsquared.com>
* Written by Rachel Mant <git@dragonmux.network>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SFDP_H
#define SFDP_H
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
#include "target.h"
typedef struct spi_parameters {
uint32_t page_size;
uint32_t sector_size;
size_t capacity;
uint8_t sector_erase_opcode;
} spi_parameters_s;
typedef void (*read_sfdp_func)(target *t, uint32_t address, void *buffer, size_t length);
bool sfdp_read_parameters(target *t, spi_parameters_s *params, read_sfdp_func sfdp_read);
#endif /*SFDP_H*/

68
src/target/sfdp_internal.h Normal file
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/*
* This file is part of the Black Magic Debug project.
*
* Copyright (C) 2022 1BitSquared <info@1bitsquared.com>
* Written by Rachel Mant <git@dragonmux.network>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SFDP_INTERNAL_H
#define SFDP_INTERNAL_H
#include "sfdp.h"
#define SFDP_HEADER_ADDRESS 0U
#define SFDP_TABLE_HEADER_ADDRESS sizeof(sfdp_header_s)
#define SFDP_MAGIC "SFDP"
#define SFDP_BASIC_SPI_PARAMETER_TABLE 0xFF00U
#define SFDP_ACCESS_PROTOCOL_LEGACY_JESD216B 0xFFU
#define SFDP_JEDEC_PARAMETER_ID(header) (((header).jedec_parameter_id_high << 8U) | (header).jedec_parameter_id_low)
#define SFDP_TABLE_ADDRESS(header) \
(((header).table_address[2] << 16U) | ((header).table_address[1] << 8U) | (header).table_address[0])
typedef struct sfdp_header {
char magic[4];
uint8_t version_minor;
uint8_t version_major;
uint8_t parameter_headers_count;
uint8_t access_protocol;
} sfdp_header_s;
typedef struct sfdp_parameter_table_header {
uint8_t jedec_parameter_id_low;
uint8_t version_minor;
uint8_t version_major;
uint8_t table_length_in_u32s;
uint8_t table_address[3];
uint8_t jedec_parameter_id_high;
} sfdp_parameter_table_header_s;
#endif /*SFDP_INTERNAL_H*/