diff options
Diffstat (limited to 'arch/x86/cpu/cpu.c')
| -rw-r--r-- | arch/x86/cpu/cpu.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/arch/x86/cpu/cpu.c b/arch/x86/cpu/cpu.c index 8fa6953588..e13786efa5 100644 --- a/arch/x86/cpu/cpu.c +++ b/arch/x86/cpu/cpu.c @@ -25,6 +25,8 @@ #include <errno.h> #include <malloc.h> #include <syscon.h> +#include <asm/acpi_s3.h> +#include <asm/acpi_table.h> #include <asm/control_regs.h> #include <asm/coreboot_tables.h> #include <asm/cpu.h> @@ -179,6 +181,11 @@ int default_print_cpuinfo(void) cpu_has_64bit() ? "x86_64" : "x86", cpu_vendor_name(gd->arch.x86_vendor), gd->arch.x86_device); +#ifdef CONFIG_HAVE_ACPI_RESUME + debug("ACPI previous sleep state: %s\n", + acpi_ss_string(gd->arch.prev_sleep_state)); +#endif + return 0; } @@ -198,10 +205,17 @@ __weak void board_final_cleanup(void) int last_stage_init(void) { - write_tables(); - board_final_cleanup(); +#if CONFIG_HAVE_ACPI_RESUME + struct acpi_fadt *fadt = acpi_find_fadt(); + + if (fadt != NULL && gd->arch.prev_sleep_state == ACPI_S3) + acpi_resume(fadt); +#endif + + write_tables(); + return 0; } #endif @@ -264,6 +278,18 @@ int reserve_arch(void) high_table_reserve(); #endif +#ifdef CONFIG_HAVE_ACPI_RESUME + acpi_s3_reserve(); + +#ifdef CONFIG_HAVE_FSP + /* + * Save stack address to CMOS so that at next S3 boot, + * we can use it as the stack address for fsp_contiue() + */ + fsp_save_s3_stack(); +#endif /* CONFIG_HAVE_FSP */ +#endif /* CONFIG_HAVE_ACPI_RESUME */ + return 0; } #endif |