| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <bootmode.h> |
| #include <stdint.h> |
| #include <acpi/acpi.h> |
| #include <console/console.h> |
| |
| #include "pmclib.h" |
| #include "pmbase.h" |
| #include "pmutil.h" |
| |
| static void clear_power_state(void) |
| { |
| uint32_t pm1_cnt = read_pmbase32(PM1_CNT); |
| write_pmbase32(PM1_CNT, pm1_cnt & ~SLP_TYP); |
| } |
| |
| int southbridge_detect_s3_resume(void) |
| { |
| if (platform_is_resuming()) { |
| clear_power_state(); |
| if (!acpi_s3_resume_allowed()) { |
| printk(BIOS_DEBUG, "SB: Resume from S3 detected, but disabled.\n"); |
| return 0; |
| } |
| |
| printk(BIOS_DEBUG, "SB: Resume from S3 detected.\n"); |
| return 1; |
| } |
| |
| return 0; |
| } |