| /* 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; |
| } |