c0a4c895e9
Use call_smm instead of writing the command number directly to the APMC SMI command IO port. Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: Iefbdb3d17932d6db6a17b5771436ede220c714fb Reviewed-on: https://review.coreboot.org/c/coreboot/+/79828 Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <arch/io.h>
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#include <console/console.h>
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#include <cpu/x86/smm.h>
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#include <smm_call.h>
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#include <stdint.h>
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static void apmc_log(const char *fn, u8 cmd)
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{
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switch (cmd) {
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case APM_CNT_ACPI_DISABLE:
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printk(BIOS_DEBUG, "%s: Disabling ACPI.\n", fn);
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break;
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case APM_CNT_ACPI_ENABLE:
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printk(BIOS_DEBUG, "%s: Enabling ACPI.\n", fn);
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break;
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case APM_CNT_FINALIZE:
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printk(BIOS_DEBUG, "%s: Finalizing SMM.\n", fn);
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break;
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case APM_CNT_ELOG_GSMI:
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break;
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case APM_CNT_SMMSTORE:
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break;
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case APM_CNT_SMMINFO:
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break;
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default:
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printk(BIOS_DEBUG, "%s: Unknown APMC 0x%02x.\n", fn, cmd);
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break;
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}
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}
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enum cb_err apm_control(u8 cmd)
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{
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/* Never proceed inside SMI handler or without one. */
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if (ENV_SMM || !CONFIG(HAVE_SMI_HANDLER))
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return CB_ERR;
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apmc_log(__func__, cmd);
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/* Now raise the SMI. */
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call_smm(cmd, 0, NULL);
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printk(BIOS_DEBUG, "APMC done.\n");
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return CB_SUCCESS;
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}
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u8 apm_get_apmc(void)
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{
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/* Read command byte from APMC SMI IO port */
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u8 cmd = inb(pm_acpi_smi_cmd_port());
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apmc_log("SMI#", cmd);
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return cmd;
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}
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