GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mainboard/asus/kfsn4-dre: Enable BIOS recovery jumper 

The ASUS KFSN4-DRE has a physical BIOS recovery jumper;
force coreboot into fallback mode if that jumper is set.

Change-Id: I513299c3e3261fc76133a49813685d48c53a172a
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/9156
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
This commit is contained in:
Timothy Pearson 2015-03-28 18:25:05 -05:00 committed by Patrick Georgi
parent a080260dbd
commit fef509499f
3 changed files with 92 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/mainboard/asus/kfsn4-dre/Kconfig
View File

@ -28,6 +28,10 @@ config MAINBOARD_DIR
string
default asus/kfsn4-dre
config BOOTBLOCK_MAINBOARD_INIT
string
default "mainboard/asus/kfsn4-dre/bootblock.c"
config DCACHE_RAM_BASE
hex
default 0xc4000

85
src/mainboard/asus/kfsn4-dre/bootblock.c Normal file
View File

@ -0,0 +1,85 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
* Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 <pc80/mc146818rtc.h>
#include <superio/winbond/common/winbond.h>
#include <superio/winbond/w83627thg/w83627thg.h>
#define GPIO_DEV PNP_DEV(0x2e, W83627THG_GPIO3)
#define WINBOND_ENTRY_KEY 0x87
#define WINBOND_EXIT_KEY 0xAA
/* Enable configuration: pass entry key '0x87' into index port dev. */
static void pnp_enter_conf_state(pnp_devfn_t dev)
{
u16 port = dev >> 8;
outb(WINBOND_ENTRY_KEY, port);
outb(WINBOND_ENTRY_KEY, port);
}
/* Disable configuration: pass exit key '0xAA' into index port dev. */
static void pnp_exit_conf_state(pnp_devfn_t dev)
{
u16 port = dev >> 8;
outb(WINBOND_EXIT_KEY, port);
}
uint8_t bootblock_read_recovery_jumper(pnp_devfn_t dev)
{
uint8_t recovery_enabled = 0;
pnp_enter_conf_state(dev);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 1); /* Enable GPIO3 */
pnp_write_config(dev, 0xf0, 0xff); /* Set GPIO3 to input */
recovery_enabled = !(pnp_read_config(dev, 0xf1) & 0x08); /* Read GP33 */
pnp_exit_conf_state(dev);
return recovery_enabled;
}
void bootblock_mainboard_init(void)
{
uint8_t recovery_enabled;
unsigned char addr;
unsigned char byte;
recovery_enabled = bootblock_read_recovery_jumper(GPIO_DEV);
if (recovery_enabled) {
#if CONFIG_USE_OPTION_TABLE
/* Clear NVRAM checksum */
for (addr = LB_CKS_RANGE_START; addr <= LB_CKS_RANGE_END; addr++) {
cmos_write(0x0, addr);
}
/* Set fallback boot */
byte = cmos_read(RTC_BOOT_BYTE);
byte &= 0xfc;
cmos_write(byte, RTC_BOOT_BYTE);
#else
/* FIXME
* Figure out how to recover if the option table is not available
*/
#endif
}
}

3
src/mainboard/asus/kfsn4-dre/spd_notes.txt
View File

@ -47,6 +47,9 @@ Power LED (-) is connected to U15 (SuperIO) pin 64 via U4 pins 5,6 and a small M
ID LED (-) is connected to a ??? via U4 pins 1,2,3,4 and U77 pins 5,6
It appears that setting U15 (SuperIO) pin 88 LOW will override the ID LED and force it ON
RECOVERY2 middle pin is connected to U15 (SuperIO) pin 89
Normal is HIGH, recovery is LOW.
PCIe slot WAKE# connects to U7 pin E23 (PCIE_WAKE#)
CPU_WARN1 is driven by (???) via a simple buffer (U13 pin 10)