diff options
Diffstat (limited to 'src/mainboard/pcengines/apu2/BiosCallOuts.c')
| -rw-r--r-- | src/mainboard/pcengines/apu2/BiosCallOuts.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/mainboard/pcengines/apu2/BiosCallOuts.c b/src/mainboard/pcengines/apu2/BiosCallOuts.c index d6f8d84300..69af3f9db3 100644 --- a/src/mainboard/pcengines/apu2/BiosCallOuts.c +++ b/src/mainboard/pcengines/apu2/BiosCallOuts.c @@ -13,6 +13,7 @@ */ #include <AGESA.h> +#include <amdblocks/acpimmio.h> #include <console/console.h> #include <spd_bin.h> #include <northbridge/amd/agesa/BiosCallOuts.h> @@ -24,6 +25,7 @@ #include "hudson.h" static AGESA_STATUS board_ReadSpd_from_cbfs(UINT32 Func, UINTN Data, VOID *ConfigPtr); +static AGESA_STATUS board_GnbPciExSlotReset(UINT32 Func, UINTN Data, VOID *ConfigPtr); const BIOS_CALLOUT_STRUCT BiosCallouts[] = { @@ -32,6 +34,7 @@ const BIOS_CALLOUT_STRUCT BiosCallouts[] = {AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported }, {AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp }, {AGESA_GET_IDS_INIT_DATA, agesa_EmptyIdsInitData }, + {AGESA_GNB_PCIE_SLOT_RESET, board_GnbPciExSlotReset }, {AGESA_HOOKBEFORE_DQS_TRAINING, agesa_NoopSuccess }, {AGESA_HOOKBEFORE_EXIT_SELF_REF, agesa_NoopSuccess } }; @@ -139,3 +142,71 @@ static AGESA_STATUS board_ReadSpd_from_cbfs(UINT32 Func, UINTN Data, VOID *Confi return AGESA_SUCCESS; } + +/* PCIE slot reset control */ +static AGESA_STATUS board_GnbPciExSlotReset(UINT32 Func, UINTN Data, VOID *ConfigPtr) +{ + AGESA_STATUS Status; + PCIe_SLOT_RESET_INFO *ResetInfo; + uint32_t GpioData; + uint8_t GpioValue; + + ResetInfo = ConfigPtr; + Status = AGESA_UNSUPPORTED; + + switch (ResetInfo->ResetId) { + /* + * ResetID 1 = PCIE_RST# affects all PCIe slots on all boards except + * apu2. ResetID 1 does not need any GPIO. + */ + case 1: + Status = AGESA_SUCCESS; + break; + case 51: /* GPIO51 resets mPCIe1 slot on apu2 */ + switch (ResetInfo->ResetControl) { + case AssertSlotReset: + GpioData = gpio1_read32(0x8); + printk(BIOS_DEBUG, "%s: ResetID %u assert %08x\n", + __func__, ResetInfo->ResetId, GpioData); + GpioValue = gpio1_read8(0xa); + GpioValue &= ~BIT6; + gpio1_write8(0xa, GpioValue); + Status = AGESA_SUCCESS; + break; + case DeassertSlotReset: + GpioData = gpio1_read32(0x8); + printk(BIOS_DEBUG, "%s: ResetID %u deassert %08x\n", + __func__, ResetInfo->ResetId, GpioData); + GpioValue = gpio1_read8(0xa); + GpioValue |= BIT6; + gpio1_write8(0xa, GpioValue); + Status = AGESA_SUCCESS; + break; + } + break; + case 55: /* GPIO51 resets mPCIe2 slot on apu2 */ + switch (ResetInfo->ResetControl) { + case AssertSlotReset: + GpioData = gpio1_read32(0xc); + printk(BIOS_DEBUG, "%s: ResetID %u assert %08x\n", + __func__, ResetInfo->ResetId, GpioData); + GpioValue = gpio1_read8(0xe); + GpioValue &= ~BIT6; + gpio1_write8(0xa, GpioValue); + Status = AGESA_SUCCESS; + break; + case DeassertSlotReset: + GpioData = gpio1_read32(0xc); + printk(BIOS_DEBUG, "%s: ResetID %u deassert %08x\n", + __func__, ResetInfo->ResetId, GpioData); + GpioValue = gpio1_read8(0xe); + GpioValue |= BIT6; + gpio1_write8(0xa, GpioValue); + Status = AGESA_SUCCESS; + break; + } + break; + } + + return Status; +} |