diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/asus/kfsn4-dre/Kconfig | 4 | ||||
| -rw-r--r-- | src/mainboard/asus/kfsn4-dre/bootblock.c | 85 | ||||
| -rw-r--r-- | src/mainboard/asus/kfsn4-dre/spd_notes.txt | 3 |
3 files changed, 92 insertions, 0 deletions
diff --git a/src/mainboard/asus/kfsn4-dre/Kconfig b/src/mainboard/asus/kfsn4-dre/Kconfig index a7ac3693fd..47fccdace4 100644 --- a/src/mainboard/asus/kfsn4-dre/Kconfig +++ b/src/mainboard/asus/kfsn4-dre/Kconfig @@ -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 diff --git a/src/mainboard/asus/kfsn4-dre/bootblock.c b/src/mainboard/asus/kfsn4-dre/bootblock.c new file mode 100644 index 0000000000..45206cb629 --- /dev/null +++ b/src/mainboard/asus/kfsn4-dre/bootblock.c @@ -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 + } +}
\ No newline at end of file diff --git a/src/mainboard/asus/kfsn4-dre/spd_notes.txt b/src/mainboard/asus/kfsn4-dre/spd_notes.txt index d7440f09d1..9287a5f75a 100644 --- a/src/mainboard/asus/kfsn4-dre/spd_notes.txt +++ b/src/mainboard/asus/kfsn4-dre/spd_notes.txt @@ -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) |