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x230: remove 4M and 8M split-images from the build

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The bios regions of the 12M coreboot image is 7M: 4M and 3 of the 8M split
image. The rest of the 8M image _generated_ with fake data and not usable
on real systems! It's dangerous to create them and suggest flashing them
externally.

That's exactly why the x230-flash build target is there: To
have a self-contained 4M image and enable easy unlocking of the 8M image
using the _original_ data.

the heads-wiki project is updated accordingly.

Closes #307
Closes #302
This commit is contained in:
Martin Kepplinger 2018-06-04 09:02:22 +02:00
parent 584c07042e
commit 4ea175838f
1 changed files with 3 additions and 11 deletions
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14
boards/x230/x230.config
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@ -33,14 +33,6 @@ export CONFIG_USB_BOOT_DEV="/dev/sdb1"
# the ME image and part of the coreboot image, and a 4 MB one that
# has the rest of the coreboot and the reset vector.
#
# When flashing via an external programmer it is easiest to have
# to separate files for these pieces.
all: $(build)/$(BOARD)/$(BOARD)-8.rom
$(build)/$(BOARD)/$(BOARD)-8.rom: $(build)/$(BOARD)/coreboot.rom
$(call do,DD 8MB,$@,dd of=$@ if=$< bs=65536 count=128 skip=0 status=none)
@sha256sum $@
all: $(build)/$(BOARD)/$(BOARD)-4.rom
$(build)/$(BOARD)/$(BOARD)-4.rom: $(build)/$(BOARD)/coreboot.rom
$(call do,DD 4MB,$@,dd of=$@ if=$< bs=65536 count=64 skip=128 status=none)
@sha256sum $@
# Only flashing to the bios region is safe to do. The easiest is to
# flash internally when the IFD is unlocked for writing, and x230-flash
# is installed first.