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c09a2f5387
Change-Id: Ic24a54ab520053e49efcba02bd9fa5b8ce69b20a Signed-off-by: Anastasia Klimchuk <aklm@flashrom.org> Reviewed-on: https://review.coreboot.org/c/flashrom/+/89956 Reviewed-by: Antonio Vázquez Blanco <antoniovazquezblanco@gmail.com> Reviewed-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*
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* This file is part of the flashrom project.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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* SPDX-FileCopyrightText: 2019 Konstantin Grudnev
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* SPDX-FileCopyrightText: 2019 Nikolay Nikolaev
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*/
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/*
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* Contains SPI chip driver functions related to ST95XXX series (SPI EEPROM)
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*/
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#include <string.h>
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#include <stdlib.h>
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#include "flashchips.h"
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#include "chipdrivers.h"
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#include "spi.h"
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/* For ST95XXX chips which have RDID */
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int probe_spi_st95(struct flashctx *flash)
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{
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/*
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* ST_M95_RDID_OUTSIZE depends on size of the flash and
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* not all ST_M95XXX have RDID.
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*/
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static const unsigned char cmd[ST_M95_RDID_OUTSIZE_MAX] = { ST_M95_RDID };
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unsigned char readarr[ST_M95_RDID_INSIZE];
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uint32_t id1, id2;
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int ret;
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uint32_t rdid_outsize = ST_M95_RDID_2BA_OUTSIZE; // 16 bit address
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if (flash->chip->total_size * KiB > 64 * KiB)
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rdid_outsize = ST_M95_RDID_3BA_OUTSIZE; // 24 bit address
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ret = spi_send_command(flash, rdid_outsize, sizeof(readarr), cmd, readarr);
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if (ret)
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return ret;
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id1 = readarr[0]; // manufacture id
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id2 = (readarr[1] << 8) | readarr[2]; // SPI family code + model id
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msg_cdbg("%s: id1 0x%02"PRIx32", id2 0x%02"PRIx32"\n", __func__, id1, id2);
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if (id1 == flash->chip->manufacture_id && id2 == flash->chip->model_id)
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return 1;
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return 0;
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}
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/* ST95XXX chips don't have erase operation and erase is made as part of write command */
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int spi_block_erase_emulation(struct flashctx *flash, unsigned int addr, unsigned int blocklen)
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{
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uint8_t *erased_contents = NULL;
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int result = 0;
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erased_contents = (uint8_t *)malloc(blocklen * sizeof(uint8_t));
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if (!erased_contents) {
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msg_cerr("Out of memory!\n");
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return 1;
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}
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memset(erased_contents, ERASED_VALUE(flash), blocklen * sizeof(uint8_t));
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result = spi_write_chunked(flash, erased_contents, 0, blocklen, flash->chip->page_size);
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free(erased_contents);
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return result;
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}
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