diff options
Diffstat (limited to 'src/southbridge/amd')
| -rw-r--r-- | src/southbridge/amd/sb700/sm.c | 45 |
1 files changed, 31 insertions, 14 deletions
diff --git a/src/southbridge/amd/sb700/sm.c b/src/southbridge/amd/sb700/sm.c index 83a722bcb2..c15ec567e1 100644 --- a/src/southbridge/amd/sb700/sm.c +++ b/src/southbridge/amd/sb700/sm.c @@ -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); |