diff options
Diffstat (limited to 'src/cpu/x86/smm/smi_trigger.c')
| -rw-r--r-- | src/cpu/x86/smm/smi_trigger.c | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/src/cpu/x86/smm/smi_trigger.c b/src/cpu/x86/smm/smi_trigger.c index 4b637450b7..7e3ddb1613 100644 --- a/src/cpu/x86/smm/smi_trigger.c +++ b/src/cpu/x86/smm/smi_trigger.c @@ -1,12 +1,9 @@ /* SPDX-License-Identifier: GPL-2.0-only */ -#include <acpi/acpi_gnvs.h> #include <arch/io.h> #include <console/console.h> #include <cpu/x86/smm.h> -static void set_smm_gnvs_ptr(void); - int apm_control(u8 cmd) { if (!CONFIG(HAVE_SMI_HANDLER)) @@ -23,9 +20,6 @@ int apm_control(u8 cmd) case APM_CNT_ACPI_ENABLE: printk(BIOS_DEBUG, "Enabling ACPI via APMC.\n"); break; - case APM_CNT_GNVS_UPDATE: - set_smm_gnvs_ptr(); - return 0; case APM_CNT_FINALIZE: printk(BIOS_DEBUG, "Finalizing SMM.\n"); break; @@ -45,32 +39,3 @@ int apm_control(u8 cmd) printk(BIOS_DEBUG, "APMC done.\n"); return 0; } - -static void set_smm_gnvs_ptr(void) -{ - uintptr_t gnvs_address; - - if (CONFIG(ACPI_NO_SMI_GNVS)) { - printk(BIOS_WARNING, "%s() is not implemented\n", __func__); - return; - } - - gnvs_address = (uintptr_t)acpi_get_gnvs(); - if (!gnvs_address) - return; - - /* - * Issue SMI to set the gnvs pointer in SMM. - * - * EAX = APM_CNT_GNVS_UPDATE - * EBX = gnvs pointer - * EDX = APM_CNT - */ - asm volatile ( - "outb %%al, %%dx\n\t" - : /* ignore result */ - : "a" (APM_CNT_GNVS_UPDATE), - "b" (gnvs_address), - "d" (APM_CNT) - ); -} |