| /* |
| * This file is part of the flashrom project. |
| * |
| * Copyright (C) 2007, 2008, 2009 Carl-Daniel Hailfinger |
| * Copyright (C) 2008 coresystems GmbH |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * Contains the generic SPI framework |
| */ |
| |
| #include "flash.h" |
| #include "flashchips.h" |
| #include "chipdrivers.h" |
| #include "spi.h" |
| |
| enum spi_controller spi_controller = SPI_CONTROLLER_NONE; |
| |
| void spi_prettyprint_status_register(struct flashchip *flash); |
| |
| const struct spi_programmer spi_programmer[] = { |
| { /* SPI_CONTROLLER_NONE */ |
| .command = NULL, |
| .multicommand = NULL, |
| .read = NULL, |
| .write_256 = NULL, |
| }, |
| |
| #if CONFIG_INTERNAL == 1 |
| #if defined(__i386__) || defined(__x86_64__) |
| { /* SPI_CONTROLLER_ICH7 */ |
| .command = ich_spi_send_command, |
| .multicommand = ich_spi_send_multicommand, |
| .read = ich_spi_read, |
| .write_256 = ich_spi_write_256, |
| }, |
| |
| { /* SPI_CONTROLLER_ICH9 */ |
| .command = ich_spi_send_command, |
| .multicommand = ich_spi_send_multicommand, |
| .read = ich_spi_read, |
| .write_256 = ich_spi_write_256, |
| }, |
| |
| { /* SPI_CONTROLLER_IT87XX */ |
| .command = it8716f_spi_send_command, |
| .multicommand = default_spi_send_multicommand, |
| .read = it8716f_spi_chip_read, |
| .write_256 = it8716f_spi_chip_write_256, |
| }, |
| |
| { /* SPI_CONTROLLER_SB600 */ |
| .command = sb600_spi_send_command, |
| .multicommand = default_spi_send_multicommand, |
| .read = sb600_spi_read, |
| .write_256 = sb600_spi_write_256, |
| }, |
| |
| { /* SPI_CONTROLLER_VIA */ |
| .command = ich_spi_send_command, |
| .multicommand = ich_spi_send_multicommand, |
| .read = ich_spi_read, |
| .write_256 = ich_spi_write_256, |
| }, |
| |
| { /* SPI_CONTROLLER_WBSIO */ |
| .command = wbsio_spi_send_command, |
| .multicommand = default_spi_send_multicommand, |
| .read = wbsio_spi_read, |
| .write_256 = spi_chip_write_1_new, |
| }, |
| #endif |
| #endif |
| |
| #if CONFIG_FT2232_SPI == 1 |
| { /* SPI_CONTROLLER_FT2232 */ |
| .command = ft2232_spi_send_command, |
| .multicommand = default_spi_send_multicommand, |
| .read = ft2232_spi_read, |
| .write_256 = ft2232_spi_write_256, |
| }, |
| #endif |
| |
| #if CONFIG_DUMMY == 1 |
| { /* SPI_CONTROLLER_DUMMY */ |
| .command = dummy_spi_send_command, |
| .multicommand = default_spi_send_multicommand, |
| .read = dummy_spi_read, |
| .write_256 = dummy_spi_write_256, |
| }, |
| #endif |
| |
| #if CONFIG_BUSPIRATE_SPI == 1 |
| { /* SPI_CONTROLLER_BUSPIRATE */ |
| .command = buspirate_spi_send_command, |
| .multicommand = default_spi_send_multicommand, |
| .read = buspirate_spi_read, |
| .write_256 = buspirate_spi_write_256, |
| }, |
| #endif |
| |
| #if CONFIG_DEDIPROG == 1 |
| { /* SPI_CONTROLLER_DEDIPROG */ |
| .command = dediprog_spi_send_command, |
| .multicommand = default_spi_send_multicommand, |
| .read = dediprog_spi_read, |
| .write_256 = spi_chip_write_1_new, |
| }, |
| #endif |
| |
| {}, /* This entry corresponds to SPI_CONTROLLER_INVALID. */ |
| }; |
| |
| const int spi_programmer_count = ARRAY_SIZE(spi_programmer); |
| |
| int spi_send_command(unsigned int writecnt, unsigned int readcnt, |
| const unsigned char *writearr, unsigned char *readarr) |
| { |
| if (!spi_programmer[spi_controller].command) { |
| msg_perr("%s called, but SPI is unsupported on this " |
| "hardware. Please report a bug at " |
| "flashrom@flashrom.org\n", __func__); |
| return 1; |
| } |
| |
| return spi_programmer[spi_controller].command(writecnt, readcnt, |
| writearr, readarr); |
| } |
| |
| int spi_send_multicommand(struct spi_command *cmds) |
| { |
| if (!spi_programmer[spi_controller].multicommand) { |
| msg_perr("%s called, but SPI is unsupported on this " |
| "hardware. Please report a bug at " |
| "flashrom@flashrom.org\n", __func__); |
| return 1; |
| } |
| |
| return spi_programmer[spi_controller].multicommand(cmds); |
| } |
| |
| int default_spi_send_command(unsigned int writecnt, unsigned int readcnt, |
| const unsigned char *writearr, unsigned char *readarr) |
| { |
| struct spi_command cmd[] = { |
| { |
| .writecnt = writecnt, |
| .readcnt = readcnt, |
| .writearr = writearr, |
| .readarr = readarr, |
| }, { |
| .writecnt = 0, |
| .writearr = NULL, |
| .readcnt = 0, |
| .readarr = NULL, |
| }}; |
| |
| return spi_send_multicommand(cmd); |
| } |
| |
| int default_spi_send_multicommand(struct spi_command *cmds) |
| { |
| int result = 0; |
| for (; (cmds->writecnt || cmds->readcnt) && !result; cmds++) { |
| result = spi_send_command(cmds->writecnt, cmds->readcnt, |
| cmds->writearr, cmds->readarr); |
| } |
| return result; |
| } |
| |
| int spi_chip_read(struct flashchip *flash, uint8_t *buf, int start, int len) |
| { |
| if (!spi_programmer[spi_controller].read) { |
| msg_perr("%s called, but SPI read is unsupported on this " |
| "hardware. Please report a bug at " |
| "flashrom@flashrom.org\n", __func__); |
| return 1; |
| } |
| |
| return spi_programmer[spi_controller].read(flash, buf, start, len); |
| } |
| |
| /* |
| * Program chip using page (256 bytes) programming. |
| * Some SPI masters can't do this, they use single byte programming instead. |
| * The redirect to single byte programming is achieved by setting |
| * .write_256 = spi_chip_write_1 |
| */ |
| /* real chunksize is up to 256, logical chunksize is 256 */ |
| int spi_chip_write_256_new(struct flashchip *flash, uint8_t *buf, int start, int len) |
| { |
| if (!spi_programmer[spi_controller].write_256) { |
| msg_perr("%s called, but SPI page write is unsupported on this " |
| "hardware. Please report a bug at " |
| "flashrom@flashrom.org\n", __func__); |
| return 1; |
| } |
| |
| return spi_programmer[spi_controller].write_256(flash, buf, start, len); |
| } |
| |
| /* Wrapper function until the generic code is converted to partial writes. */ |
| int spi_chip_write_256(struct flashchip *flash, uint8_t *buf) |
| { |
| int ret; |
| |
| msg_pinfo("Erasing flash before programming... "); |
| if (erase_flash(flash)) { |
| msg_perr("ERASE FAILED!\n"); |
| return -1; |
| } |
| msg_pinfo("done.\n"); |
| msg_pinfo("Programming flash... "); |
| ret = spi_chip_write_256_new(flash, buf, 0, flash->total_size * 1024); |
| if (!ret) |
| msg_pinfo("done.\n"); |
| else |
| msg_pinfo("\n"); |
| return ret; |
| } |
| |
| /* |
| * Get the lowest allowed address for read accesses. This often happens to |
| * be the lowest allowed address for all commands which take an address. |
| * This is a programmer limitation. |
| */ |
| uint32_t spi_get_valid_read_addr(void) |
| { |
| switch (spi_controller) { |
| #if CONFIG_INTERNAL == 1 |
| #if defined(__i386__) || defined(__x86_64__) |
| case SPI_CONTROLLER_ICH7: |
| /* Return BBAR for ICH chipsets. */ |
| return ichspi_bbar; |
| #endif |
| #endif |
| default: |
| return 0; |
| } |
| } |