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IT87: Add ability to select between chips on GIGABYTE DualBIOS boards

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Thanks to Vadim Girlin for finding out how to do that.
This is known to work on GA-MA770-UD3, GA-B75M-D3V, GA-B75N and
GA-H61M-S1 (only M_BIOS is populated).

Corresponding to flashrom svn r1720.

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Tested-by: Damien Zammit <damien@zamaudio.com>
Tested-by: Anton Kochkov <anton.kochkov@gmail.com>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
This commit is contained in:
Vadim Girlin 2013-08-24 12:18:17 +00:00 committed by Stefan Tauner
parent bdead0d27d
commit 4dd0f906c6
3 changed files with 55 additions and 10 deletions
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13
flashrom.8
View File

@ -315,6 +315,19 @@ do not match, it will refuse to write the image unless you specify
.TP
.B ITE IT87 Super I/O
.sp
If your mainboard is manufactured by GIGABYTE and supports DualBIOS it is very likely that it uses an
ITE IT87 series Super I/O to switch between the two flash chips. Only one of them can be accessed at a time
and you can manually select which one to use with the
.sp
.B " flashrom \-p internal:dualbiosindex=chip"
.sp
syntax where
.B chip
is the index of the chip to use (0 = main, 1 = backup). You can check which one is currently selected by
leaving out the
.B chip
parameter.
.sp
If your mainboard uses an ITE IT87 series Super I/O for LPC<->SPI flash bus
translation, flashrom should autodetect that configuration. If you want to
set the I/O base port of the IT87 series SPI controller manually instead of

5
internal.c
View File

@ -331,9 +331,8 @@ int internal_init(void)
return ret;
#if defined(__i386__) || defined(__x86_64__)
/* Probe unconditionally for IT87* LPC->SPI translation and for
* IT87* Parallel write enable.
*/
/* Probe unconditionally for ITE Super I/O chips. This enables LPC->SPI translation on IT87* and
* parallel writes on IT8705F. Also, this handles the manual chip select for Gigabyte's DualBIOS. */
init_superio_ite();
#endif

47
it87spi.c
View File

@ -27,6 +27,7 @@
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include "flash.h"
#include "chipdrivers.h"
#include "programmer.h"
@ -36,7 +37,7 @@
#define ITE_SUPERIO_PORT1 0x2e
#define ITE_SUPERIO_PORT2 0x4e
uint16_t it8716f_flashport = 0;
static uint16_t it8716f_flashport = 0;
/* use fast 33MHz SPI (<>0) or slow 16MHz (0) */
static int fast_spi = 1;
@ -124,10 +125,40 @@ static const struct spi_programmer spi_programmer_it87xx = {
static uint16_t it87spi_probe(uint16_t port)
{
uint8_t tmp = 0;
char *portpos = NULL;
uint16_t flashport = 0;
enter_conf_mode_ite(port);
char *param = extract_programmer_param("dualbiosindex");
if (param != NULL) {
sio_write(port, 0x07, 0x07); /* Select GPIO LDN */
tmp = sio_read(port, 0xEF);
if (*param == '\0') { /* Print current setting only. */
free(param);
} else {
char *dualbiosindex_suffix;
errno = 0;
long chip_index = strtol(param, &dualbiosindex_suffix, 0);
free(param);
if (errno != 0 || *dualbiosindex_suffix != '\0' || chip_index < 0 || chip_index > 1) {
msg_perr("DualBIOS: Invalid chip index requested - choose 0 or 1.\n");
exit_conf_mode_ite(port);
return 1;
}
if (chip_index != (tmp & 1)) {
msg_pdbg("DualBIOS: Previous chip index: %d\n", tmp & 1);
sio_write(port, 0xEF, (tmp & 0xFE) | chip_index);
tmp = sio_read(port, 0xEF);
if ((tmp & 1) != chip_index) {
msg_perr("DualBIOS: Chip selection failed.\n");
exit_conf_mode_ite(port);
return 1;
}
}
}
msg_pinfo("DualBIOS: Selected chip: %d\n", tmp & 1);
}
/* NOLDN, reg 0x24, mask out lowest bit (suspend) */
tmp = sio_read(port, 0x24) & 0xFE;
/* Check if LPC->SPI translation is active. */
@ -163,11 +194,11 @@ static uint16_t it87spi_probe(uint16_t port)
flashport |= sio_read(port, 0x65);
msg_pdbg("Serial flash port 0x%04x\n", flashport);
/* Non-default port requested? */
portpos = extract_programmer_param("it87spiport");
if (portpos) {
param = extract_programmer_param("it87spiport");
if (param) {
char *endptr = NULL;
unsigned long forced_flashport;
forced_flashport = strtoul(portpos, &endptr, 0);
forced_flashport = strtoul(param, &endptr, 0);
/* Port 0, port >0x1000, unaligned ports and garbage strings
* are rejected.
*/
@ -180,7 +211,8 @@ static uint16_t it87spi_probe(uint16_t port)
msg_perr("Error: it87spiport specified, but no valid "
"port specified.\nPort must be a multiple of "
"0x8 and lie between 0x100 and 0xff8.\n");
free(portpos);
exit_conf_mode_ite(port);
free(param);
return 1;
} else {
flashport = (uint16_t)forced_flashport;
@ -190,7 +222,7 @@ static uint16_t it87spi_probe(uint16_t port)
sio_write(port, 0x65, (flashport & 0xff));
}
}
free(portpos);
free(param);
exit_conf_mode_ite(port);
it8716f_flashport = flashport;
if (internal_buses_supported & BUS_SPI)
@ -228,6 +260,7 @@ int init_superio_ite(void)
case 0x8716:
case 0x8718:
case 0x8720:
case 0x8728:
ret |= it87spi_probe(superios[i].port);
break;
default: