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![Jagannadha Sutradharudu Teki](/assets/img/avatar_default.png)
Flag status register polling is required for micron 512Mb flash devices onwards, for performing erase/program operations. Like polling for WIP(Write-In-Progress) bit in read status register, spi_flash_cmd_wait_ready will poll for PEC(Program-Erase-Control) bit in flag status register. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
219 lines
4.3 KiB
C
219 lines
4.3 KiB
C
/*
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* (C) Copyright 2000-2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* Copyright 2008, Network Appliance Inc.
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* Jason McMullan <mcmullan@netapp.com>
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*
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* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
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* TsiChung Liew (Tsi-Chung.Liew@freescale.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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/* M25Pxx-specific commands */
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#define CMD_M25PXX_RES 0xab /* Release from DP, and Read Signature */
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struct stmicro_spi_flash_params {
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u16 id;
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u16 pages_per_sector;
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u16 nr_sectors;
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const char *name;
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};
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static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
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{
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.id = 0x2011,
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.pages_per_sector = 128,
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.nr_sectors = 4,
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.name = "M25P10",
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},
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{
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.id = 0x2015,
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.pages_per_sector = 256,
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.nr_sectors = 32,
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.name = "M25P16",
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},
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{
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.id = 0x2012,
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.pages_per_sector = 256,
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.nr_sectors = 4,
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.name = "M25P20",
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},
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{
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.id = 0x2016,
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.pages_per_sector = 256,
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.nr_sectors = 64,
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.name = "M25P32",
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},
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{
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.id = 0x2013,
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.pages_per_sector = 256,
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.nr_sectors = 8,
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.name = "M25P40",
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},
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{
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.id = 0x2017,
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.pages_per_sector = 256,
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.nr_sectors = 128,
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.name = "M25P64",
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},
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{
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.id = 0x2014,
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.pages_per_sector = 256,
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.nr_sectors = 16,
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.name = "M25P80",
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},
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{
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.id = 0x2018,
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.pages_per_sector = 1024,
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.nr_sectors = 64,
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.name = "M25P128",
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},
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{
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.id = 0xba16,
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.pages_per_sector = 256,
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.nr_sectors = 64,
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.name = "N25Q32",
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},
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{
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.id = 0xbb16,
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.pages_per_sector = 256,
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.nr_sectors = 64,
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.name = "N25Q32A",
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},
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{
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.id = 0xba17,
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.pages_per_sector = 256,
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.nr_sectors = 128,
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.name = "N25Q064",
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},
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{
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.id = 0xbb17,
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.pages_per_sector = 256,
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.nr_sectors = 128,
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.name = "N25Q64A",
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},
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{
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.id = 0xba18,
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.pages_per_sector = 256,
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.nr_sectors = 256,
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.name = "N25Q128",
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},
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{
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.id = 0xbb18,
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.pages_per_sector = 256,
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.nr_sectors = 256,
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.name = "N25Q128A",
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},
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{
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.id = 0xba19,
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.pages_per_sector = 256,
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.nr_sectors = 512,
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.name = "N25Q256",
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},
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{
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.id = 0xbb19,
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.pages_per_sector = 256,
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.nr_sectors = 512,
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.name = "N25Q256A",
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},
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{
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.id = 0xba20,
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.pages_per_sector = 256,
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.nr_sectors = 1024,
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.name = "N25Q512",
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},
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{
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.id = 0xbb20,
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.pages_per_sector = 256,
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.nr_sectors = 1024,
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.name = "N25Q512A",
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},
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{
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.id = 0xba21,
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.pages_per_sector = 256,
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.nr_sectors = 2048,
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.name = "N25Q1024",
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},
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{
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.id = 0xbb21,
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.pages_per_sector = 256,
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.nr_sectors = 2048,
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.name = "N25Q1024A",
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},
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};
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struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
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{
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const struct stmicro_spi_flash_params *params;
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struct spi_flash *flash;
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unsigned int i;
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u16 id;
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if (idcode[0] == 0xff) {
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i = spi_flash_cmd(spi, CMD_M25PXX_RES,
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idcode, 4);
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if (i)
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return NULL;
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if ((idcode[3] & 0xf0) == 0x10) {
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idcode[0] = 0x20;
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idcode[1] = 0x20;
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idcode[2] = idcode[3] + 1;
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} else
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return NULL;
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}
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id = ((idcode[1] << 8) | idcode[2]);
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for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) {
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params = &stmicro_spi_flash_table[i];
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if (params->id == id) {
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break;
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}
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}
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if (i == ARRAY_SIZE(stmicro_spi_flash_table)) {
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debug("SF: Unsupported STMicro ID %04x\n", id);
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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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flash->page_size = 256;
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flash->sector_size = 256 * params->pages_per_sector;
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flash->size = flash->sector_size * params->nr_sectors;
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/* for >= 512MiB flashes, use flag status instead of read_status */
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if (flash->size >= 0x4000000)
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flash->poll_cmd = CMD_FLAG_STATUS;
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return flash;
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}
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