diff options
| -rw-r--r-- | src/soc/amd/cezanne/smihandler.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/soc/amd/cezanne/smihandler.c b/src/soc/amd/cezanne/smihandler.c index 46164e4d84..80dbb7be01 100644 --- a/src/soc/amd/cezanne/smihandler.c +++ b/src/soc/amd/cezanne/smihandler.c @@ -1,14 +1,90 @@ /* SPDX-License-Identifier: GPL-2.0-or-later */ +#include <acpi/acpi.h> +#include <amdblocks/acpi.h> +#include <amdblocks/acpimmio.h> +#include <amdblocks/smi.h> #include <amdblocks/smm.h> +#include <arch/hlt.h> +#include <arch/io.h> +#include <console/console.h> #include <cpu/x86/smm.h> +#include <soc/smi.h> +#include <types.h> + +static void fch_apmc_smi_handler(void) +{ + const uint8_t cmd = inb(pm_acpi_smi_cmd_port()); + + switch (cmd) { + case APM_CNT_ACPI_ENABLE: + acpi_enable_sci(); + break; + case APM_CNT_ACPI_DISABLE: + acpi_disable_sci(); + } + + mainboard_smi_apmc(cmd); +} + +static void fch_slp_typ_handler(void) +{ + uint16_t pm1cnt; + uint8_t slp_typ; + + /* Figure out SLP_TYP */ + pm1cnt = acpi_read16(MMIO_ACPI_PM1_CNT_BLK); + printk(BIOS_SPEW, "SMI#: SLP = 0x%04x\n", pm1cnt); + slp_typ = acpi_sleep_from_pm1(pm1cnt); + + /* Do any mainboard sleep handling */ + mainboard_smi_sleep(slp_typ); + + switch (slp_typ) { + case ACPI_S0: + printk(BIOS_DEBUG, "SMI#: Entering S0 (On)\n"); + break; + case ACPI_S3: + printk(BIOS_DEBUG, "SMI#: Entering S3 (Suspend-To-RAM)\n"); + break; + case ACPI_S4: + printk(BIOS_DEBUG, "SMI#: Entering S4 (Suspend-To-Disk)\n"); + break; + case ACPI_S5: + printk(BIOS_DEBUG, "SMI#: Entering S5 (Soft Power off)\n"); + break; + default: + printk(BIOS_DEBUG, "SMI#: ERROR: SLP_TYP reserved\n"); + break; + } + + if (slp_typ >= ACPI_S3) { + printk(BIOS_ERR, "Error: System did not go to sleep\n"); + hlt(); + } +} int southbridge_io_trap_handler(int smif) { return 0; } +/* + * Table of functions supported in the SMI handler. Note that SMI source setup + * in fch.c is unrelated to this list. + */ +static const struct smi_sources_t smi_sources[] = { + { .type = SMITYPE_SMI_CMD_PORT, .handler = fch_apmc_smi_handler }, + { .type = SMITYPE_SLP_TYP, .handler = fch_slp_typ_handler}, +}; + void *get_smi_source_handler(int source) { + size_t i; + + for (i = 0 ; i < ARRAY_SIZE(smi_sources) ; i++) + if (smi_sources[i].type == source) + return smi_sources[i].handler; + return NULL; } |