soc/amd/cezanne/smihandler: add basic SMI APMC and sleep handler
Only the ACPI enable/disable functionality is implemented and sleep is
also not implemented yet. This will be added in future patches.
Change-Id: I7701944023ce2e86586679c32c4138d4488768a1
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50488
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/amd/cezanne/smihandler.c b/src/soc/amd/cezanne/smihandler.c
index 46164e4..80dbb7b 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;
}