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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>
117 lines
2.8 KiB
C
117 lines
2.8 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: 2000 Silicon Integrated System Corporation
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* SPDX-FileCopyrightText: 2005 coresystems GmbH <stepan@openbios.org>
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* SPDX-FileCopyrightText: 2009 Sean Nelson <audiohacked@gmail.com>
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*/
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#include "flash.h"
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#include "parallel.h"
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#include "chipdrivers.h"
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#define AUTO_PG_ERASE1 0x20
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#define AUTO_PG_ERASE2 0xD0
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#define AUTO_PGRM 0x10
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#define CHIP_ERASE 0x30
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#define RESET 0xFF
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#define READ_ID 0x90
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int protect_28sf040(struct flashctx *flash)
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{
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chipaddr bios = flash->virtual_memory;
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chip_readb(flash, bios + 0x1823);
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chip_readb(flash, bios + 0x1820);
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chip_readb(flash, bios + 0x1822);
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chip_readb(flash, bios + 0x0418);
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chip_readb(flash, bios + 0x041B);
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chip_readb(flash, bios + 0x0419);
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chip_readb(flash, bios + 0x040A);
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return 0;
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}
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int unprotect_28sf040(struct flashctx *flash)
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{
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chipaddr bios = flash->virtual_memory;
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chip_readb(flash, bios + 0x1823);
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chip_readb(flash, bios + 0x1820);
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chip_readb(flash, bios + 0x1822);
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chip_readb(flash, bios + 0x0418);
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chip_readb(flash, bios + 0x041B);
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chip_readb(flash, bios + 0x0419);
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chip_readb(flash, bios + 0x041A);
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return 0;
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}
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int erase_sector_28sf040(struct flashctx *flash, unsigned int address,
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unsigned int sector_size)
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{
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chipaddr bios = flash->virtual_memory;
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/* This command sequence is very similar to erase_block_82802ab. */
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chip_writeb(flash, AUTO_PG_ERASE1, bios);
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chip_writeb(flash, AUTO_PG_ERASE2, bios + address);
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/* wait for Toggle bit ready */
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toggle_ready_jedec(flash, bios);
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/* FIXME: Check the status register for errors. */
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return 0;
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}
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/* chunksize is 1 */
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int write_28sf040(struct flashctx *flash, const uint8_t *src, unsigned int start, unsigned int len)
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{
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unsigned int i;
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chipaddr bios = flash->virtual_memory;
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chipaddr dst = flash->virtual_memory + start;
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for (i = 0; i < len; i++) {
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/* transfer data from source to destination */
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if (*src == 0xFF) {
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dst++, src++;
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/* If the data is 0xFF, don't program it */
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continue;
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}
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/*issue AUTO PROGRAM command */
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chip_writeb(flash, AUTO_PGRM, dst);
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chip_writeb(flash, *src++, dst++);
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/* wait for Toggle bit ready */
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toggle_ready_jedec(flash, bios);
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update_progress(flash, FLASHROM_PROGRESS_WRITE, 1);
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}
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return 0;
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}
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static int erase_28sf040(struct flashctx *flash)
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{
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chipaddr bios = flash->virtual_memory;
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chip_writeb(flash, CHIP_ERASE, bios);
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chip_writeb(flash, CHIP_ERASE, bios);
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programmer_delay(flash, 10);
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toggle_ready_jedec(flash, bios);
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/* FIXME: Check the status register for errors. */
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return 0;
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}
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int erase_chip_28sf040(struct flashctx *flash, unsigned int addr,
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unsigned int blocklen)
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{
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if ((addr != 0) || (blocklen != flash->chip->total_size * 1024)) {
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msg_cerr("%s called with incorrect arguments\n",
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__func__);
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return -1;
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}
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return erase_28sf040(flash);
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}
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