diff options
Diffstat (limited to 'src/mainboard/amd/bettong/BiosCallOuts.c')
| -rw-r--r-- | src/mainboard/amd/bettong/BiosCallOuts.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/mainboard/amd/bettong/BiosCallOuts.c b/src/mainboard/amd/bettong/BiosCallOuts.c index b251a5a5e7..8ea10d9080 100644 --- a/src/mainboard/amd/bettong/BiosCallOuts.c +++ b/src/mainboard/amd/bettong/BiosCallOuts.c @@ -26,6 +26,7 @@ #include "imc.h" #include "hudson.h" #include <stdlib.h> +#include <string.h> #include "northbridge/amd/pi/dimmSpd.h" #include "northbridge/amd/pi/agesawrapper.h" #include <boardid.h> @@ -52,6 +53,25 @@ static const GPIO_CONTROL oem_bettong_gpio[] = { {64, Function1, FCH_GPIO_PULL_UP_ENABLE | FCH_GPIO_OUTPUT_VALUE | FCH_GPIO_OUTPUT_ENABLE | DrvStrengthSel_12mA}, {-1} }; + +/* Bettong Hardware Monitor Fan Control + * Hardware limitation: + * HWM will fail to read the input temperature via I2C if other + * software switches the I2C address. AMD recommends using IMC + * to control fans, instead of HWM. + */ +static void oem_fan_control(FCH_DATA_BLOCK *FchParams) +{ + /* Enable IMC fan control. the recommand way */ + imc_reg_init(); + + FchParams->Imc.ImcEnable = TRUE; + FchParams->Hwm.HwmControl = 1; /* 1 IMC, 0 HWM */ + FchParams->Imc.ImcEnableOverWrite = 1; /* 2 disable IMC, 1 enable IMC, 0 following hw strap setting */ + + memset(&FchParams->Imc.EcStruct, 0, sizeof(FCH_EC)); +} + /** * Fch Oem setting callback * @@ -72,6 +92,7 @@ AGESA_STATUS Fch_Oem_config(UINT32 Func, UINTN FchData, VOID *ConfigPtr) } else if (StdHeader->Func == AMD_INIT_ENV) { FCH_DATA_BLOCK *FchParams_env = (FCH_DATA_BLOCK *)FchData; printk(BIOS_DEBUG, "Fch OEM config in INIT ENV "); + if (IS_ENABLED(CONFIG_HUDSON_IMC_FWM)) oem_fan_control(FchParams_env); |