From 9e94dbfcd089db31b2201381f9d83a89cdea86b9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= Date: Thu, 8 Jan 2015 20:03:18 +0200 Subject: ACPI: Get S3 resume state from romstage_handoff MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There is nothing platform specific in retrieving S3 resume state from romstage_handoff structure. Boards without EARLY_CBMEM_INIT update acpi_slp_type from ACPI power-management block or scratchpad registers. Change-Id: Ifc3755f891a0810473b3216c1fec8e45908fc1ab Signed-off-by: Kyösti Mälkki Reviewed-on: http://review.coreboot.org/8188 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/arch/x86/boot/acpi.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'src/arch/x86') diff --git a/src/arch/x86/boot/acpi.c b/src/arch/x86/boot/acpi.c index 621df2f72f..fb902dbfa2 100644 --- a/src/arch/x86/boot/acpi.c +++ b/src/arch/x86/boot/acpi.c @@ -36,6 +36,7 @@ #if CONFIG_COLLECT_TIMESTAMPS #include #endif +#include /* FIXME: Kconfig doesn't support overridable defaults :-( */ #ifndef CONFIG_HPET_MIN_TICKS @@ -857,10 +858,25 @@ void acpi_resume(void *wake_vec) /* This is filled with acpi_is_wakeup() call early in ramstage. */ int acpi_slp_type = -1; -int __attribute__((weak)) acpi_get_sleep_type(void) +#if IS_ENABLED(CONFIG_EARLY_CBMEM_INIT) +int acpi_get_sleep_type(void) { - return 0; + struct romstage_handoff *handoff; + + handoff = cbmem_find(CBMEM_ID_ROMSTAGE_INFO); + + if (handoff == NULL) { + printk(BIOS_DEBUG, "Unknown boot method, assuming normal.\n"); + return 0; + } else if (handoff->s3_resume) { + printk(BIOS_DEBUG, "S3 Resume.\n"); + return 3; + } else { + printk(BIOS_DEBUG, "Normal boot.\n"); + return 0; + } } +#endif static void acpi_handoff_wakeup(void) { -- cgit v1.2.3