diff options
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/arch/x86/acpi_s3.c | 15 | ||||
| -rw-r--r-- | src/arch/x86/include/arch/acpi.h | 2 |
3 files changed, 18 insertions, 0 deletions
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc index 016d9baaf6..be50db1e56 100644 --- a/src/arch/x86/Makefile.inc +++ b/src/arch/x86/Makefile.inc @@ -331,6 +331,7 @@ ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32)$(CONFIG_ARCH_ROMSTAGE_X86_64),y) romstage-$(CONFIG_POSTCAR_STAGE) += postcar_loader.c romstage-y += cbmem.c romstage-y += boot.c +romstage-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c romstage-y += cbfs_and_run.c romstage-$(CONFIG_ARCH_RAMSTAGE_X86_32) += cpu_common.c diff --git a/src/arch/x86/acpi_s3.c b/src/arch/x86/acpi_s3.c index b6bee0d6a6..7855a2f28d 100644 --- a/src/arch/x86/acpi_s3.c +++ b/src/arch/x86/acpi_s3.c @@ -22,6 +22,8 @@ #include <romstage_handoff.h> #include <rules.h> +#if ENV_RAMSTAGE + /* This is filled with acpi_is_wakeup() call early in ramstage. */ int acpi_slp_type = -1; @@ -75,6 +77,19 @@ void acpi_fail_wakeup(void) if (acpi_slp_type == 3 || acpi_slp_type == 2) acpi_slp_type = 0; } +#endif /* ENV_RAMSTAGE */ + +void acpi_prepare_for_resume(void) +{ + if (!HIGH_MEMORY_SAVE) + return; + + /* Back up the OS-controlled memory where ramstage will be loaded. */ + void *src = (void *)CONFIG_RAMBASE; + void *dest = cbmem_find(CBMEM_ID_RESUME); + if (dest != NULL) + memcpy(dest, src, HIGH_MEMORY_SAVE); +} void acpi_prepare_resume_backup(void) { diff --git a/src/arch/x86/include/arch/acpi.h b/src/arch/x86/include/arch/acpi.h index b79dcac6a6..7434000560 100644 --- a/src/arch/x86/include/arch/acpi.h +++ b/src/arch/x86/include/arch/acpi.h @@ -636,12 +636,14 @@ int acpi_is_wakeup(void); int acpi_is_wakeup_s3(void); int acpi_is_wakeup_s4(void); #endif +void acpi_prepare_for_resume(void); #else #define acpi_slp_type 0 static inline int acpi_is_wakeup(void) { return 0; } static inline int acpi_is_wakeup_s3(void) { return 0; } static inline int acpi_is_wakeup_s4(void) { return 0; } +static inline void acpi_prepare_for_resume(void) { } #endif static inline uintptr_t acpi_align_current(uintptr_t current) |