Patrick Georgi has submitted this change and it was merged. ( https://review.coreboot.org/c/coreboot/+/31676 )
Change subject: fmap: Add FMAP_AREA_PRESERVE ......................................................................
fmap: Add FMAP_AREA_PRESERVE
When updating firmware, we may need to preserve some sections like VPD, calibration data, ... etc. The logic can be hard-coded in updater as a list of known names, but a better solution is to have that directly declared inside FMAP area flags.
To do that, the first step is to apply the changes in flash map (http://crosreview.com/1493767). A new FMAP_AREA_PRESERVE is now defined and will be set in future with new syntax in FMD parser.
BUG=chromium:936768 TEST=make; boots an x86 image.
Change-Id: Idba5c8d4a4c5d272f22be85d2054c6c0ce020b1b Signed-off-by: Hung-Te Lin hungte@chromium.org Reviewed-on: https://review.coreboot.org/c/31676 Tested-by: build bot (Jenkins) no-reply@coreboot.org Reviewed-by: Furquan Shaikh furquan@google.com --- M payloads/libpayload/include/fmap_serialized.h M src/commonlib/include/commonlib/fmap_serialized.h M util/cbfstool/flashmap/fmap.c M util/cbfstool/flashmap/fmap.h 4 files changed, 4 insertions(+), 0 deletions(-)
Approvals: build bot (Jenkins): Verified Furquan Shaikh: Looks good to me, approved
diff --git a/payloads/libpayload/include/fmap_serialized.h b/payloads/libpayload/include/fmap_serialized.h index 1e83760..53a09af 100644 --- a/payloads/libpayload/include/fmap_serialized.h +++ b/payloads/libpayload/include/fmap_serialized.h @@ -48,6 +48,7 @@ FMAP_AREA_STATIC = 1 << 0, FMAP_AREA_COMPRESSED = 1 << 1, FMAP_AREA_RO = 1 << 2, + FMAP_AREA_PRESERVE = 1 << 3, };
/* Mapping of volatile and static regions in firmware binary */ diff --git a/src/commonlib/include/commonlib/fmap_serialized.h b/src/commonlib/include/commonlib/fmap_serialized.h index 1e83760..53a09af 100644 --- a/src/commonlib/include/commonlib/fmap_serialized.h +++ b/src/commonlib/include/commonlib/fmap_serialized.h @@ -48,6 +48,7 @@ FMAP_AREA_STATIC = 1 << 0, FMAP_AREA_COMPRESSED = 1 << 1, FMAP_AREA_RO = 1 << 2, + FMAP_AREA_PRESERVE = 1 << 3, };
/* Mapping of volatile and static regions in firmware binary */ diff --git a/util/cbfstool/flashmap/fmap.c b/util/cbfstool/flashmap/fmap.c index 733f468..f1d2fb9 100644 --- a/util/cbfstool/flashmap/fmap.c +++ b/util/cbfstool/flashmap/fmap.c @@ -59,6 +59,7 @@ { FMAP_AREA_STATIC, "static" }, { FMAP_AREA_COMPRESSED, "compressed" }, { FMAP_AREA_RO, "ro" }, + { FMAP_AREA_PRESERVE, "preserve" }, };
/* returns size of fmap data structure if successful, <0 to indicate error */ diff --git a/util/cbfstool/flashmap/fmap.h b/util/cbfstool/flashmap/fmap.h index 6e2091f..e360011 100644 --- a/util/cbfstool/flashmap/fmap.h +++ b/util/cbfstool/flashmap/fmap.h @@ -49,6 +49,7 @@ FMAP_AREA_STATIC = 1 << 0, FMAP_AREA_COMPRESSED = 1 << 1, FMAP_AREA_RO = 1 << 2, + FMAP_AREA_PRESERVE = 1 << 3, };
/* Mapping of volatile and static regions in firmware binary */