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authorAaron Durbin <adurbin@chromium.org>2013-02-11 21:15:12 -0600
committerRonald G. Minnich <rminnich@gmail.com>2013-03-21 22:49:49 +0100
commitc00457d065a0b57e8e2e8abc9318fc6e1198ee64 (patch)
treed529351f300f0af21922c72a3c7bdf6abeea713a
parentf2b20d898a652889a819478174316cff235a501b (diff)
romstage_handoff: add s3_resume field
Provide a field in the romstage_handoff structure to indicate if the current boot is an ACPI S3 wake boot. There are currently quite a few non-standardized ways of passing this knowledge to ramstage from romstage. Many utilize stashing magic numbers in device-specific registers. The addition of this field adds a more formalized method passing along this information. However, it still requires the romstage chipset code to initialize this field. In short, this change does not make this a hard requirement for ramstage. Change-Id: Ia819c0ceed89ed427ef576a036fa870eb7cf57bc Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2796 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
-rw-r--r--src/include/romstage_handoff.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/romstage_handoff.h b/src/include/romstage_handoff.h
index 13dc9797bb..c20b2614bd 100644
--- a/src/include/romstage_handoff.h
+++ b/src/include/romstage_handoff.h
@@ -31,6 +31,8 @@ struct romstage_handoff {
/* This indicates to the ramstage to reserve a chunk of memory. */
uint32_t reserve_base;
uint32_t reserve_size;
+ /* Inidicate if the current boot is an S3 resume. */
+ uint32_t s3_resume;
};
#if defined(__PRE_RAM__)