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authorPatrick Georgi <patrick.georgi@coresystems.de>2009-06-28 22:47:06 +0000
committerPatrick Georgi <patrick.georgi@coresystems.de>2009-06-28 22:47:06 +0000
commitb1ff95c14d62ffad2bb417aa3372fe767342de7f (patch)
tree1aa47fdd993e9d58421e7bd046d49648b91e4cbc /util/flashrom/it87spi.c
parent1220c50919757a0a9b0ba31eba348b9e80dd7e2d (diff)
This copy of flashrom is old and unmaintained. Delete it to avoid
confusion, after we had a grace period to get people to move over to the new repository. History stays available for the archaeologists and for ancient checkouts (potentially with local changes). Use "svn diff" to get local changes, and apply it to a newer tree (if you manage to apply it, that is). The new repository is available at: svn://coreboot.org/flashrom/trunk Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4379 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/flashrom/it87spi.c')
-rw-r--r--util/flashrom/it87spi.c280
1 files changed, 0 insertions, 280 deletions
diff --git a/util/flashrom/it87spi.c b/util/flashrom/it87spi.c
deleted file mode 100644
index f95f88d82c..0000000000
--- a/util/flashrom/it87spi.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * This file is part of the flashrom project.
- *
- * Copyright (C) 2007, 2008 Carl-Daniel Hailfinger
- * Copyright (C) 2008 Ronald Hoogenboom <ronald@zonnet.nl>
- * 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 ITE IT87* SPI specific routines
- */
-
-#include <stdio.h>
-#include <pci/pci.h>
-#include <stdint.h>
-#include <string.h>
-#include "flash.h"
-#include "spi.h"
-
-#define ITE_SUPERIO_PORT1 0x2e
-#define ITE_SUPERIO_PORT2 0x4e
-
-uint16_t it8716f_flashport = 0;
-/* use fast 33MHz SPI (<>0) or slow 16MHz (0) */
-int fast_spi = 1;
-
-/* Generic Super I/O helper functions */
-uint8_t regval(uint16_t port, uint8_t reg)
-{
- OUTB(reg, port);
- return INB(port + 1);
-}
-
-void regwrite(uint16_t port, uint8_t reg, uint8_t val)
-{
- OUTB(reg, port);
- OUTB(val, port + 1);
-}
-
-/* Helper functions for most recent ITE IT87xx Super I/O chips */
-#define CHIP_ID_BYTE1_REG 0x20
-#define CHIP_ID_BYTE2_REG 0x21
-static void enter_conf_mode_ite(uint16_t port)
-{
- OUTB(0x87, port);
- OUTB(0x01, port);
- OUTB(0x55, port);
- if (port == ITE_SUPERIO_PORT1)
- OUTB(0x55, port);
- else
- OUTB(0xaa, port);
-}
-
-static void exit_conf_mode_ite(uint16_t port)
-{
- regwrite(port, 0x02, 0x02);
-}
-
-static uint16_t find_ite_spi_flash_port(uint16_t port)
-{
- uint8_t tmp = 0;
- uint16_t id, flashport = 0;
-
- enter_conf_mode_ite(port);
-
- id = regval(port, CHIP_ID_BYTE1_REG) << 8;
- id |= regval(port, CHIP_ID_BYTE2_REG);
-
- /* TODO: Handle more IT87xx if they support flash translation */
- if (0x8716 == id || 0x8718 == id) {
- /* NOLDN, reg 0x24, mask out lowest bit (suspend) */
- tmp = regval(port, 0x24) & 0xFE;
- printf("Serial flash segment 0x%08x-0x%08x %sabled\n",
- 0xFFFE0000, 0xFFFFFFFF, (tmp & 1 << 1) ? "en" : "dis");
- printf("Serial flash segment 0x%08x-0x%08x %sabled\n",
- 0x000E0000, 0x000FFFFF, (tmp & 1 << 1) ? "en" : "dis");
- printf("Serial flash segment 0x%08x-0x%08x %sabled\n",
- 0xFFEE0000, 0xFFEFFFFF, (tmp & 1 << 2) ? "en" : "dis");
- printf("Serial flash segment 0x%08x-0x%08x %sabled\n",
- 0xFFF80000, 0xFFFEFFFF, (tmp & 1 << 3) ? "en" : "dis");
- printf("LPC write to serial flash %sabled\n",
- (tmp & 1 << 4) ? "en" : "dis");
- /* If any serial flash segment is enabled, enable writing. */
- if ((tmp & 0xe) && (!(tmp & 1 << 4))) {
- printf("Enabling LPC write to serial flash\n");
- tmp |= 1 << 4;
- regwrite(port, 0x24, tmp);
- }
- printf("serial flash pin %i\n", (tmp & 1 << 5) ? 87 : 29);
- /* LDN 0x7, reg 0x64/0x65 */
- regwrite(port, 0x07, 0x7);
- flashport = regval(port, 0x64) << 8;
- flashport |= regval(port, 0x65);
- }
- exit_conf_mode_ite(port);
- return flashport;
-}
-
-int it87xx_probe_spi_flash(const char *name)
-{
- it8716f_flashport = find_ite_spi_flash_port(ITE_SUPERIO_PORT1);
-
- if (!it8716f_flashport)
- it8716f_flashport = find_ite_spi_flash_port(ITE_SUPERIO_PORT2);
-
- if (it8716f_flashport)
- flashbus = BUS_TYPE_IT87XX_SPI;
-
- return (!it8716f_flashport);
-}
-
-/*
- * The IT8716F only supports commands with length 1,2,4,5 bytes including
- * command byte and can not read more than 3 bytes from the device.
- *
- * This function expects writearr[0] to be the first byte sent to the device,
- * whereas the IT8716F splits commands internally into address and non-address
- * commands with the address in inverse wire order. That's why the register
- * ordering in case 4 and 5 may seem strange.
- */
-int it8716f_spi_command(unsigned int writecnt, unsigned int readcnt,
- const unsigned char *writearr, unsigned char *readarr)
-{
- uint8_t busy, writeenc;
- int i;
-
- do {
- busy = INB(it8716f_flashport) & 0x80;
- } while (busy);
- if (readcnt > 3) {
- printf("%s called with unsupported readcnt %i.\n",
- __FUNCTION__, readcnt);
- return 1;
- }
- switch (writecnt) {
- case 1:
- OUTB(writearr[0], it8716f_flashport + 1);
- writeenc = 0x0;
- break;
- case 2:
- OUTB(writearr[0], it8716f_flashport + 1);
- OUTB(writearr[1], it8716f_flashport + 7);
- writeenc = 0x1;
- break;
- case 4:
- OUTB(writearr[0], it8716f_flashport + 1);
- OUTB(writearr[1], it8716f_flashport + 4);
- OUTB(writearr[2], it8716f_flashport + 3);
- OUTB(writearr[3], it8716f_flashport + 2);
- writeenc = 0x2;
- break;
- case 5:
- OUTB(writearr[0], it8716f_flashport + 1);
- OUTB(writearr[1], it8716f_flashport + 4);
- OUTB(writearr[2], it8716f_flashport + 3);
- OUTB(writearr[3], it8716f_flashport + 2);
- OUTB(writearr[4], it8716f_flashport + 7);
- writeenc = 0x3;
- break;
- default:
- printf("%s called with unsupported writecnt %i.\n",
- __FUNCTION__, writecnt);
- return 1;
- }
- /*
- * Start IO, 33 or 16 MHz, readcnt input bytes, writecnt output bytes.
- * Note:
- * We can't use writecnt directly, but have to use a strange encoding.
- */
- OUTB(((0x4 + (fast_spi ? 1 : 0)) << 4)
- | ((readcnt & 0x3) << 2) | (writeenc), it8716f_flashport);
-
- if (readcnt > 0) {
- do {
- busy = INB(it8716f_flashport) & 0x80;
- } while (busy);
-
- for (i = 0; i < readcnt; i++)
- readarr[i] = INB(it8716f_flashport + 5 + i);
- }
-
- return 0;
-}
-
-/* Page size is usually 256 bytes */
-static void it8716f_spi_page_program(int block, uint8_t *buf, uint8_t *bios)
-{
- int i;
-
- spi_write_enable();
- OUTB(0x06, it8716f_flashport + 1);
- OUTB(((2 + (fast_spi ? 1 : 0)) << 4), it8716f_flashport);
- for (i = 0; i < 256; i++) {
- bios[256 * block + i] = buf[256 * block + i];
- }
- OUTB(0, it8716f_flashport);
- /* Wait until the Write-In-Progress bit is cleared.
- * This usually takes 1-10 ms, so wait in 1 ms steps.
- */
- while (spi_read_status_register() & JEDEC_RDSR_BIT_WIP)
- usleep(1000);
-}
-
-/*
- * IT8716F only allows maximum of 512 kb SPI mapped to LPC memory cycles
- * Program chip using firmware cycle byte programming. (SLOW!)
- */
-int it8716f_over512k_spi_chip_write(struct flashchip *flash, uint8_t *buf)
-{
- int total_size = 1024 * flash->total_size;
- int i;
-
- fast_spi = 0;
-
- spi_disable_blockprotect();
- for (i = 0; i < total_size; i++) {
- spi_write_enable();
- spi_byte_program(i, buf[i]);
- while (spi_read_status_register() & JEDEC_RDSR_BIT_WIP)
- myusec_delay(10);
- }
- /* resume normal ops... */
- OUTB(0x20, it8716f_flashport);
-
- return 0;
-}
-
-/*
- * IT8716F only allows maximum of 512 kb SPI mapped to LPC memory cycles
- * Need to read this big flash using firmware cycles 3 byte at a time.
- */
-int it8716f_spi_chip_read(struct flashchip *flash, uint8_t *buf)
-{
- int total_size = 1024 * flash->total_size;
- int i;
- fast_spi = 0;
-
- if (total_size > 512 * 1024) {
- for (i = 0; i < total_size; i += 3) {
- int toread = 3;
- if (total_size - i < toread)
- toread = total_size - i;
- spi_nbyte_read(i, buf + i, toread);
- }
- } else {
- memcpy(buf, (const char *)flash->virtual_memory, total_size);
- }
-
- return 0;
-}
-
-int it8716f_spi_chip_write(struct flashchip *flash, uint8_t *buf)
-{
- int total_size = 1024 * flash->total_size;
- int i;
-
- if (total_size > 512 * 1024) {
- it8716f_over512k_spi_chip_write(flash, buf);
- } else {
- for (i = 0; i < total_size / 256; i++) {
- it8716f_spi_page_program(i, buf,
- (uint8_t *)flash->virtual_memory);
- }
- }
-
- return 0;
-}