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southbridge/amd/sb700: Add option for last power state after failure 

Change-Id: Ieb27bd51dfd45dd15d24a576865d38180a07444e
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/12175
Reviewed-by: Peter Stuge <peter@stuge.se>
Tested-by: build bot (Jenkins)
This commit is contained in:
Timothy Pearson 2015-10-23 22:16:55 -05:00 committed by Peter Stuge
parent 83c3c9e1d5
commit 4731423b91
1 changed files with 31 additions and 14 deletions
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45
src/southbridge/amd/sb700/sm.c
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@ -2,6 +2,7 @@
* This file is part of the coreboot project.
*
* Copyright (C) 2010 Advanced Micro Devices, Inc.
* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
*
* 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
@ -33,18 +34,27 @@
#define NMI_OFF 0
#define MAINBOARD_POWER_OFF 0
#define MAINBOARD_POWER_ON 1
#ifndef CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL
#define CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL MAINBOARD_POWER_ON
#endif
#define PRIMARY_SMBUS_RESOURCE_NUMBER 0x90
#define AUXILIARY_SMBUS_RESOURCE_NUMBER 0x58
uint8_t amd_sb700_aux_smbus = 0;
enum power_mode {
POWER_MODE_OFF = 0,
POWER_MODE_ON = 1,
POWER_MODE_LAST = 2,
};
#ifndef CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL
#define CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL POWER_MODE_ON
#endif
static const char* power_mode_names[] = {
[POWER_MODE_OFF] = "off",
[POWER_MODE_ON] = "on",
[POWER_MODE_LAST] = "last",
};
/*
* SB700 enables all USB controllers by default in SMBUS Control.
* SB700 enables SATA by default in SMBUS Control.
@ -56,7 +66,7 @@ static void sm_init(device_t dev)
u8 rev;
u32 dword;
void *ioapic_base;
u32 on;
uint32_t power_state;
u32 nmi_option;
printk(BIOS_INFO, "sm_init().\n");
@ -126,16 +136,23 @@ static void sm_init(device_t dev)
pm_iowrite(0x53, byte);
/* power after power fail */
on = CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
get_option(&on, "power_on_after_fail");
power_state = CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
get_option(&power_state, "power_on_after_fail");
if (power_state > 2) {
printk(BIOS_WARNING, "Invalid power_on_after_fail setting, using default\n");
power_state = CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
}
byte = pm_ioread(0x74);
byte &= ~0x03;
if (on) {
byte |= 2;
}
if (power_state == POWER_MODE_OFF)
byte |= 0x0;
else if (power_state == POWER_MODE_ON)
byte |= 0x1;
else if (power_state == POWER_MODE_LAST)
byte |= 0x2;
byte |= 1 << 2;
pm_iowrite(0x74, byte);
printk(BIOS_INFO, "set power %s after power fail\n", on ? "on" : "off");
printk(BIOS_INFO, "set power \"%s\" after power fail\n", power_mode_names[power_state]);
byte = pm_ioread(0x68);
byte &= ~(1 << 1);