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/*
* flash rom utility: enable flash writes (board specific)
*
* Copyright (C) 2005-2007 coresystems GmbH <stepan@coresystems.de>
* Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2007 Luc Verhaegen <libv@skynet.be>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2
*
*/
/*
* Contains the board specific flash enables.
*/
#include <stdio.h>
#include <pci/pci.h>
#include <stdint.h>
#include <string.h>
#include "flash.h"
#include "debug.h"
/*
* Match on pci-ids, no report received, just data from the mainboard
* specific code:
* main: 0x1022:0x746B, which is the SMBUS controller.
* card: 0x1022:0x36C0...
*/
static int board_agami_aruma(char *name)
{
/* Extended function index register, either 0x2e or 0x4e */
#define EFIR 0x2e
/* Extended function data register, one plus the index reg. */
#define EFDR EFIR + 1
char b;
/* Disable the flash write protect. The flash write protect is
* connected to the WinBond w83627hf GPIO 24.
*/
outb(0x87, EFIR); /* sequence to unlock extended functions */
outb(0x87, EFIR);
outb(0x20, EFIR); /* SIO device ID register */
b = inb(EFDR);
printf_debug("\nW83627HF device ID = 0x%x\n",b);
if (b != 0x52) {
fprintf(stderr, "\nIncorrect device ID, aborting write protect disable\n");
return -1;
}
outb(0x2b, EFIR); /* GPIO multiplexed pin reg. */
b = inb(EFDR) | 0x10;
outb(0x2b, EFIR);
outb(b, EFDR); /* select GPIO 24 instead of WDTO */
outb(0x7, EFIR); /* logical device select */
outb(0x8, EFDR); /* point to device 8, GPIO port 2 */
outb(0x30, EFIR); /* logic device activation control */
outb(0x1, EFDR); /* activate */
outb(0xf0, EFIR); /* GPIO 20-27 I/O selection register */
b = inb(EFDR) & ~0x10;
outb(0xf0, EFIR);
outb(b, EFDR); /* set GPIO 24 as an output */
outb(0xf1, EFIR); /* GPIO 20-27 data register */
b = inb(EFDR) | 0x10;
outb(0xf1, EFIR);
outb(b, EFDR); /* set GPIO 24 */
outb(0xaa, EFIR); /* command to exit extended functions */
return 0;
}
/*
* Suited for VIAs EPIA M and MII, and maybe other CLE266 based EPIAs.
*
* We don't need to do this when using linuxbios, GPIO15 is never lowered there.
*/
static int board_via_epia_m(char *name)
{
struct pci_dev *dev;
unsigned int base;
uint8_t val;
dev = pci_dev_find(0x1106, 0x3177); /* VT8235 ISA bridge */
if (!dev) {
fprintf(stderr, "\nERROR: VT8235 ISA Bridge not found.\n");
return -1;
}
/* GPIO12-15 -> output */
val = pci_read_byte(dev, 0xE4);
val |= 0x10;
pci_write_byte(dev, 0xE4, val);
/* Get Power Management IO address. */
base = pci_read_word(dev, 0x88) & 0xFF80;
/* enable GPIO15 which is connected to write protect. */
val = inb(base + 0x4D);
val |= 0x80;
outb(val, base + 0x4D);
return 0;
}
/*
* Winbond LPC super IO.
*
* Raises the ROM MEMW# line.
*/
static void w83697_rom_memw_enable(void)
{
uint8_t val;
outb(0x87, 0x2E); /* enable extended functions */
outb(0x87, 0x2E);
outb(0x24, 0x2E); /* rom bits live here */
val = inb(0x2F);
if (!(val & 0x02)) /* flash rom enabled? */
outb(val | 0x08, 0x2F); /* enable MEMW# */
outb(0xAA, 0x2E); /* disable extended functions */
}
/*
* Suited for Asus A7V8X-MX SE and A7V400-MX.
*
*/
static int board_asus_a7v8x_mx(char *name)
{
struct pci_dev *dev;
uint8_t val;
dev = pci_dev_find(0x1106, 0x3177); /* VT8235 ISA bridge */
if (!dev) {
fprintf(stderr, "\nERROR: VT8235 ISA Bridge not found.\n");
return -1;
}
/* This bit is marked reserved actually */
val = pci_read_byte(dev, 0x59);
val &= 0x7F;
pci_write_byte(dev, 0x59, val);
w83697_rom_memw_enable();
return 0;
}
/*
* We use 2 sets of ids here, you're free to choose which is which. This
* to provide a very high degree of certainty when matching a board on
* the basis of Subsystem/card ids. As not every vendor handles
* subsystem/card ids in a sane manner.
*
* Keep the second set nulled if it should be ignored.
*
*/
struct board_pciid_enable {
/* Any device, but make it sensible, like the isa bridge. */
uint16_t first_vendor;
uint16_t first_device;
uint16_t first_card_vendor;
uint16_t first_card_device;
/* Any device, but make it sensible, like
* the host bridge. May be NULL
*/
uint16_t second_vendor;
uint16_t second_device;
uint16_t second_card_vendor;
uint16_t second_card_device;
/* From linuxbios table */
char *lb_vendor;
char *lb_part;
char *name;
int (*enable)(char *name);
};
struct board_pciid_enable board_pciid_enables[] = {
{ 0x1022, 0x746B, 0x1022, 0x36C0, 0x0000, 0x0000, 0x0000, 0x0000,
"AGAMI", "ARUMA", "Agami Aruma", board_agami_aruma },
{ 0x1106, 0x3177, 0x1106, 0xAA01, 0x1106, 0x3123, 0x1106, 0xAA01,
NULL, NULL, "VIA EPIA M/MII/...", board_via_epia_m },
{ 0x1106, 0x3177, 0x1043, 0x80A1, 0x1106, 0x3205, 0x1043, 0x8118,
NULL, NULL, "Asus A7V8-MX SE", board_asus_a7v8x_mx },
{ 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL } /* Keep this */
};
/*
* Match boards on linuxbios table gathered vendor and part name.
* Require main pci-ids to match too as extra safety.
*
*/
static struct board_pciid_enable *
board_match_linuxbios_name(char *vendor, char *part)
{
struct board_pciid_enable *board = board_pciid_enables;
for (; board->name; board++) {
if (!board->lb_vendor || strcmp(board->lb_vendor, vendor))
continue;
if (!board->lb_part || strcmp(board->lb_part, part))
continue;
if (!pci_dev_find(board->first_vendor, board->first_device))
continue;
if (board->second_vendor &&
!pci_dev_find(board->second_vendor, board->second_device))
continue;
return board;
}
return NULL;
}
/*
* Match boards on pci ids and subsystem ids.
* Second set of ids can be main only or missing completely.
*/
static struct board_pciid_enable *board_match_pci_card_ids(void)
{
struct board_pciid_enable *board = board_pciid_enables;
for (; board->name; board++) {
if (!board->first_card_vendor || !board->first_card_device)
continue;
if (!pci_card_find(board->first_vendor, board->first_device,
board->first_card_vendor,
board->first_card_device))
continue;
if (board->second_vendor) {
if (board->second_card_vendor) {
if (!pci_card_find(board->second_vendor,
board->second_device,
board->second_card_vendor,
board->second_card_device))
continue;
} else {
if (!pci_dev_find(board->second_vendor,
board->second_device))
continue;
}
}
return board;
}
return NULL;
}
/*
*
*/
int board_flash_enable(char *vendor, char *part)
{
struct board_pciid_enable *board = NULL;
int ret = 0;
if (vendor && part)
board = board_match_linuxbios_name(vendor, part);
if (!board)
board = board_match_pci_card_ids();
if (board) {
printf("Found board \"%s\": Enabling flash write... ",
board->name);
ret = board->enable(board->name);
if (ret)
printf("Failed!\n");
else
printf("OK.\n");
}
return ret;
}
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