diff options
Diffstat (limited to 'util/flashrom/wbsio_spi.c')
-rw-r--r-- | util/flashrom/wbsio_spi.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/util/flashrom/wbsio_spi.c b/util/flashrom/wbsio_spi.c deleted file mode 100644 index a3e96fd184..0000000000 --- a/util/flashrom/wbsio_spi.c +++ /dev/null @@ -1,207 +0,0 @@ -/* - * This file is part of the flashrom project. - * - * Copyright (C) 2008 Peter Stuge <peter@stuge.se> - * - * 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 - */ - -#include <stdio.h> -#include <pci/pci.h> -#include <stdint.h> -#include <string.h> -#include "flash.h" -#include "spi.h" - -#define WBSIO_PORT1 0x2e -#define WBSIO_PORT2 0x4e - -static uint16_t wbsio_spibase = 0; - -static uint16_t wbsio_get_spibase(uint16_t port) -{ - uint8_t id; - uint16_t flashport = 0; - - w836xx_ext_enter(port); - id = wbsio_read(port, 0x20); - if (id != 0xa0) { - fprintf(stderr, "\nW83627 not found at 0x%x, id=0x%02x want=0xa0.\n", port, id); - goto done; - } - - if (0 == (wbsio_read(port, 0x24) & 2)) { - fprintf(stderr, "\nW83627 found at 0x%x, but SPI pins are not enabled. (CR[0x24] bit 1=0)\n", port); - goto done; - } - - wbsio_write(port, 0x07, 0x06); - if (0 == (wbsio_read(port, 0x30) & 1)) { - fprintf(stderr, "\nW83627 found at 0x%x, but SPI is not enabled. (LDN6[0x30] bit 0=0)\n", port); - goto done; - } - - flashport = (wbsio_read(port, 0x62) << 8) | wbsio_read(port, 0x63); - -done: - w836xx_ext_leave(port); - return flashport; -} - -int wbsio_check_for_spi(const char *name) -{ - if (0 == (wbsio_spibase = wbsio_get_spibase(WBSIO_PORT1))) - if (0 == (wbsio_spibase = wbsio_get_spibase(WBSIO_PORT2))) - return 1; - - printf_debug("\nwbsio_spibase = 0x%x\n", wbsio_spibase); - flashbus = BUS_TYPE_WBSIO_SPI; - return 0; -} - -/* W83627DHG has 11 command modes: - * 1=1 command only - * 2=1 command+1 data write - * 3=1 command+2 data read - * 4=1 command+3 address - * 5=1 command+3 address+1 data write - * 6=1 command+3 address+4 data write - * 7=1 command+3 address+1 dummy address inserted by wbsio+4 data read - * 8=1 command+3 address+1 data read - * 9=1 command+3 address+2 data read - * a=1 command+3 address+3 data read - * b=1 command+3 address+4 data read - * - * mode[7:4] holds the command mode - * mode[3:0] holds SPI address bits [19:16] - * - * The Winbond SPI master only supports 20 bit addresses on the SPI bus. :\ - * Would one more byte of RAM in the chip (to get all 24 bits) really make - * such a big difference? - */ -int wbsio_spi_command(unsigned int writecnt, unsigned int readcnt, - const unsigned char *writearr, unsigned char *readarr) -{ - int i; - uint8_t mode = 0; - - printf_debug("%s:", __func__); - - if (1 == writecnt && 0 == readcnt) { - mode = 0x10; - } else if (2 == writecnt && 0 == readcnt) { - OUTB(writearr[1], wbsio_spibase + 4); - printf_debug(" data=0x%02x", writearr[1]); - mode = 0x20; - } else if (1 == writecnt && 2 == readcnt) { - mode = 0x30; - } else if (4 == writecnt && 0 == readcnt) { - printf_debug(" addr=0x%02x", (writearr[1] & 0x0f)); - for (i = 2; i < writecnt; i++) { - OUTB(writearr[i], wbsio_spibase + i); - printf_debug("%02x", writearr[i]); - } - mode = 0x40 | (writearr[1] & 0x0f); - } else if (5 == writecnt && 0 == readcnt) { - printf_debug(" addr=0x%02x", (writearr[1] & 0x0f)); - for (i = 2; i < 4; i++) { - OUTB(writearr[i], wbsio_spibase + i); - printf_debug("%02x", writearr[i]); - } - OUTB(writearr[i], wbsio_spibase + i); - printf_debug(" data=0x%02x", writearr[i]); - mode = 0x50 | (writearr[1] & 0x0f); - } else if (8 == writecnt && 0 == readcnt) { - printf_debug(" addr=0x%02x", (writearr[1] & 0x0f)); - for (i = 2; i < 4; i++) { - OUTB(writearr[i], wbsio_spibase + i); - printf_debug("%02x", writearr[i]); - } - printf_debug(" data=0x"); - for (; i < writecnt; i++) { - OUTB(writearr[i], wbsio_spibase + i); - printf_debug("%02x", writearr[i]); - } - mode = 0x60 | (writearr[1] & 0x0f); - } else if (5 == writecnt && 4 == readcnt) { - /* XXX: TODO not supported by flashrom infrastructure! - * This mode, 7, discards the fifth byte in writecnt, - * but since we can not express that in flashrom, fail - * the operation for now. - */ - ; - } else if (4 == writecnt && readcnt >= 1 && readcnt <= 4) { - printf_debug(" addr=0x%02x", (writearr[1] & 0x0f)); - for (i = 2; i < writecnt; i++) { - OUTB(writearr[i], wbsio_spibase + i); - printf_debug("%02x", writearr[i]); - } - mode = ((7 + readcnt) << 4) | (writearr[1] & 0x0f); - } - printf_debug(" cmd=%02x mode=%02x\n", writearr[0], mode); - - if (!mode) { - fprintf(stderr, "%s: unsupported command type wr=%d rd=%d\n", - __func__, writecnt, readcnt); - return 1; - } - - OUTB(writearr[0], wbsio_spibase); - OUTB(mode, wbsio_spibase + 1); - myusec_delay(10); - - if (!readcnt) - return 0; - - printf_debug("%s: returning data =", __func__); - for (i = 0; i < readcnt; i++) { - readarr[i] = INB(wbsio_spibase + 4 + i); - printf_debug(" 0x%02x", readarr[i]); - } - printf_debug("\n"); - return 0; -} - -int wbsio_spi_read(struct flashchip *flash, uint8_t *buf) -{ - int size = flash->total_size * 1024; - - if (flash->total_size > 1024) { - fprintf(stderr, "%s: Winbond saved on 4 register bits so max chip size is 1024 KB!\n", __func__); - return 1; - } - - memcpy(buf, (const char *)flash->virtual_memory, size); - return 0; -} - -int wbsio_spi_write(struct flashchip *flash, uint8_t *buf) -{ - int pos, size = flash->total_size * 1024; - - if (flash->total_size > 1024) { - fprintf(stderr, "%s: Winbond saved on 4 register bits so max chip size is 1024 KB!\n", __func__); - return 1; - } - - flash->erase(flash); - spi_write_enable(); - for (pos = 0; pos < size; pos++) { - spi_byte_program(pos, buf[pos]); - while (spi_read_status_register() & JEDEC_RDSR_BIT_WIP) - myusec_delay(10); - } - spi_write_disable(); - return 0; -} |