diff options
| -rw-r--r-- | src/soc/amd/cezanne/fch.c | 23 | ||||
| -rw-r--r-- | src/soc/amd/cezanne/include/soc/southbridge.h | 4 |
2 files changed, 25 insertions, 2 deletions
diff --git a/src/soc/amd/cezanne/fch.c b/src/soc/amd/cezanne/fch.c index 5fb4f0ab98..3e2eadeb15 100644 --- a/src/soc/amd/cezanne/fch.c +++ b/src/soc/amd/cezanne/fch.c @@ -1,12 +1,17 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include <amdblocks/acpimmio.h> +#include <amdblocks/smi.h> #include <assert.h> +#include <cpu/x86/smm.h> #include <soc/iomap.h> +#include <soc/smi.h> #include <soc/southbridge.h> static void fch_init_acpi_ports(void) { + u32 reg; + /* We use some of these ports in SMM regardless of whether or not * ACPI tables are generated. Enable these ports indiscriminately. */ @@ -17,8 +22,22 @@ static void fch_init_acpi_ports(void) pm_write16(PM_GPE0_BLK, ACPI_GPE0_BLK); if (CONFIG(HAVE_SMI_HANDLER)) { - /* TODO: add code for SMI handler case */ - dead_code(); + /* APMC - SMI Command Port */ + pm_write16(PM_ACPI_SMI_CMD, APM_CNT); + configure_smi(SMITYPE_SMI_CMD_PORT, SMI_MODE_SMI); + + /* SMI on SlpTyp requires sending SMI before completion + response of the I/O write. */ + reg = pm_read32(PM_PCI_CTRL); + reg |= FORCE_SLPSTATE_RETRY; + pm_write32(PM_PCI_CTRL, reg); + + /* Disable SlpTyp feature */ + reg = pm_read8(PM_RST_CTRL1); + reg &= ~SLPTYPE_CONTROL_EN; + pm_write8(PM_RST_CTRL1, reg); + + configure_smi(SMITYPE_SLP_TYP, SMI_MODE_SMI); } else { pm_write16(PM_ACPI_SMI_CMD, 0); } diff --git a/src/soc/amd/cezanne/include/soc/southbridge.h b/src/soc/amd/cezanne/include/soc/southbridge.h index 9353e13ace..dcb5ef1872 100644 --- a/src/soc/amd/cezanne/include/soc/southbridge.h +++ b/src/soc/amd/cezanne/include/soc/southbridge.h @@ -6,6 +6,8 @@ #include <soc/iomap.h> /* Power management registers: 0xfed80300 or index/data at IO 0xcd6/cd7 */ +#define PM_PCI_CTRL 0x08 +#define FORCE_SLPSTATE_RETRY BIT(25) #define PWR_RESET_CFG 0x10 #define TOGGLE_ALL_PWR_GOOD (1 << 1) #define PM_SERIRQ_CONF 0x54 @@ -50,6 +52,8 @@ #define PM_ACPI_WAKE_AS_GEVENT BIT(27) #define PM_ACPI_NB_PME_GEVENT BIT(28) #define PM_ACPI_RTC_WAKE_EN BIT(29) +#define PM_RST_CTRL1 0xbe +#define SLPTYPE_CONTROL_EN BIT(5) #define PM_LPC_GATING 0xec #define PM_LPC_AB_NO_BYPASS_EN BIT(2) #define PM_LPC_A20_EN BIT(1) |