diff options
Diffstat (limited to 'src/cpu/x86/smm')
| -rw-r--r-- | src/cpu/x86/smm/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/cpu/x86/smm/smi_trigger.c | 43 |
2 files changed, 44 insertions, 0 deletions
diff --git a/src/cpu/x86/smm/Makefile.inc b/src/cpu/x86/smm/Makefile.inc index 500f169edb..dbe567a8a2 100644 --- a/src/cpu/x86/smm/Makefile.inc +++ b/src/cpu/x86/smm/Makefile.inc @@ -1,6 +1,7 @@ ## SPDX-License-Identifier: GPL-2.0-only ramstage-y += smm_module_loader.c +ramstage-y += smi_trigger.c ifeq ($(CONFIG_ARCH_RAMSTAGE_X86_32),y) $(eval $(call create_class_compiler,smm,x86_32)) diff --git a/src/cpu/x86/smm/smi_trigger.c b/src/cpu/x86/smm/smi_trigger.c new file mode 100644 index 0000000000..f1031a00f6 --- /dev/null +++ b/src/cpu/x86/smm/smi_trigger.c @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <arch/io.h> +#include <console/console.h> +#include <cpu/x86/smm.h> + +int apm_control(u8 cmd) +{ + if (!CONFIG(HAVE_SMI_HANDLER)) + return -1; + + switch (cmd) { + case APM_CNT_CST_CONTROL: + break; + case APM_CNT_PST_CONTROL: + break; + case APM_CNT_ACPI_DISABLE: + printk(BIOS_DEBUG, "Disabling ACPI via APMC.\n"); + break; + case APM_CNT_ACPI_ENABLE: + printk(BIOS_DEBUG, "Enabling ACPI via APMC.\n"); + break; + case APM_CNT_GNVS_UPDATE: + break; + case APM_CNT_FINALIZE: + printk(BIOS_DEBUG, "Finalizing SMM.\n"); + break; + case APM_CNT_ELOG_GSMI: + break; + case APM_CNT_SMMSTORE: + break; + case APM_CNT_SMMINFO: + break; + default: + break; + } + + /* Now raise the SMI. */ + outb(cmd, APM_CNT); + + printk(BIOS_DEBUG, "APMC done.\n"); + return 0; +} |