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https://github.com/AsahiLinux/u-boot
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f10b4c0e65
This patch adds driver for the gigabyte devices GD25LQ and GD25Q64B required for Snow Board. Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/*
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* Gigadevice SPI flash driver
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* Copyright 2013, Samsung Electronics Co., Ltd.
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* Author: Banajit Goswami <banajit.g@samsung.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <malloc.h>
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#include <spi_flash.h>
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#include "spi_flash_internal.h"
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struct gigadevice_spi_flash_params {
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uint16_t id;
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uint16_t nr_blocks;
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const char *name;
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};
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static const struct gigadevice_spi_flash_params gigadevice_spi_flash_table[] = {
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{
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.id = 0x6016,
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.nr_blocks = 64,
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.name = "GD25LQ",
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},
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{
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.id = 0x4017,
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.nr_blocks = 128,
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.name = "GD25Q64B",
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},
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};
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struct spi_flash *spi_flash_probe_gigadevice(struct spi_slave *spi, u8 *idcode)
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{
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const struct gigadevice_spi_flash_params *params;
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struct spi_flash *flash;
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(gigadevice_spi_flash_table); i++) {
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params = &gigadevice_spi_flash_table[i];
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if (params->id == ((idcode[1] << 8) | idcode[2]))
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break;
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}
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if (i == ARRAY_SIZE(gigadevice_spi_flash_table)) {
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debug("SF: Unsupported Gigadevice ID %02x%02x\n",
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idcode[1], idcode[2]);
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return NULL;
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}
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flash = spi_flash_alloc_base(spi, params->name);
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if (!flash) {
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debug("SF: Failed to allocate memory\n");
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return NULL;
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}
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/* page_size */
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flash->page_size = 256;
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/* sector_size = page_size * pages_per_sector */
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flash->sector_size = flash->page_size * 16;
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/* size = sector_size * sector_per_block * number of blocks */
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flash->size = flash->sector_size * 16 * params->nr_blocks;
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return flash;
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}
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