From f780c40f40306a21489f8ddd6e17c979ba0fd7a3 Mon Sep 17 00:00:00 2001 From: Julius Werner Date: Mon, 10 Nov 2014 13:11:50 -0800 Subject: CBFS: Correct ROM_SIZE for ARM boards, use CBFS_SIZE for cbfstool Some projects (like ChromeOS) put more content than described by CBFS onto their image. For top-aligned images (read: x86), this has traditionally been achieved with a CBFS_SIZE Kconfig (which denotes the area actually managed by CBFS, as opposed to ROM_SIZE) that is used to calculate the CBFS entry start offset. On bottom-aligned boards, many define a fake (smaller) ROM_SIZE for only the CBFS part, which is not consistently done and can be an issue because ROM_SIZE is expected to be a power of two. This patch changes all non-x86 boards to describe their actual (physical) ROM size via one of the BOARD_ROMSIZE_KB_xxx options as a mainboard Kconfig select (which is the correct place to declare unchangeable physical properties of the board). It also changes the cbfstool create invocation to use CBFS_SIZE as the -s parameter for those architectures, which defaults to ROM_SIZE but gets overridden for special use cases like ChromeOS. This has the advantage that cbfstool has a consistent idea of where the area it is responsible for ends, which offers better bounds-checking and is needed for a subsequent fix. Also change the FMAP offset to default to right behind the (now consistently known) CBFS region for non-x86 boards, which has emerged as a de-facto standard on those architectures and allows us to reduce the amount of custom configuration. In the future, the nightmare that is ChromeOS's image build system could be redesigned to enforce this automatically, and also confirm that it doesn't overwrite any space used by CBFS (which is now consistently defined as the file size of coreboot.rom on non-x86). CQ-DEPEND=CL:231576,CL:231475 BRANCH=None BUG=chromium:422501 TEST=Built and booted on Veyron_Pinky. Change-Id: I89aa5b30e25679e074d4cb5eee4c08178892ada6 Signed-off-by: Patrick Georgi Original-Commit-Id: e707c67c69599274b890d0686522880aa2e16d71 Original-Change-Id: I4fce5a56a8d72f4c4dd3a08c129025f1565351cc Original-Signed-off-by: Julius Werner Original-Reviewed-on: https://chromium-review.googlesource.com/229974 Original-Reviewed-by: Aaron Durbin Reviewed-on: http://review.coreboot.org/9619 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/arch/arm64/Makefile.inc | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'src/arch/arm64') diff --git a/src/arch/arm64/Makefile.inc b/src/arch/arm64/Makefile.inc index f81e76ac3d..8e88d9c444 100644 --- a/src/arch/arm64/Makefile.inc +++ b/src/arch/arm64/Makefile.inc @@ -34,7 +34,9 @@ subdirs-y += armv8/ ################################################################################ ifeq ($(CONFIG_ARCH_ROMSTAGE_ARM64),y) -CBFSTOOL_PRE1_OPTS = -m arm64 -b $(CONFIG_BOOTBLOCK_ROM_OFFSET) -H $(CONFIG_CBFS_HEADER_ROM_OFFSET) -o $(CONFIG_CBFS_ROM_OFFSET) +CBFSTOOL_PRE1_OPTS = -m arm64 -b $(CONFIG_BOOTBLOCK_ROM_OFFSET) \ + -H $(CONFIG_CBFS_HEADER_ROM_OFFSET) \ + -o $(CONFIG_CBFS_ROM_OFFSET) -s $(CONFIG_CBFS_SIZE) endif ifeq ($(CONFIG_ARCH_ARM64),y) -- cgit v1.2.3