diff options
Diffstat (limited to 'src/soc/amd/cezanne/fch.c')
| -rw-r--r-- | src/soc/amd/cezanne/fch.c | 23 |
1 files changed, 21 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); } |