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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>
This commit is contained in:
Felix Held 2021-02-10 16:34:31 +01:00
parent bb4bee8572
commit be35a3a012
1 changed files with 76 additions and 0 deletions
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76
src/soc/amd/cezanne/smihandler.c
View File

@ -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;
}