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Introduce Verifying Program Loader (VPL)

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Add support for VPL, a new phase of U-Boot. This runs after TPL. It is
responsible for selecting which SPL binary to run, based on a
verified-boot process.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2022-04-30 00:56:52 -06:00
committed by Tom Rini
parent d3eba95a7e
commit f86ca5ad8f
13 changed files with 131 additions and 19 deletions
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14
Makefile
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@@ -911,6 +911,12 @@ else
TPL_SIZE_CHECK =
endif
ifneq ($(CONFIG_VPL_SIZE_LIMIT),0x0)
VPL_SIZE_CHECK = @$(call size_check,$@,$(CONFIG_VPL_SIZE_LIMIT))
else
VPL_SIZE_CHECK =
endif
# Statically apply RELA-style relocations (currently arm64 only)
# This is useful for arm64 where static relocation needs to be performed on
# the raw binary, but certain simulators only accept an ELF file (but don't
@@ -951,6 +957,7 @@ INPUTS-$(CONFIG_SPL_FRAMEWORK) += u-boot.img
endif
endif
INPUTS-$(CONFIG_TPL) += tpl/u-boot-tpl.bin
INPUTS-$(CONFIG_VPL) += vpl/u-boot-vpl.bin
# Allow omitting the .dtb output if it is not normally used
INPUTS-$(CONFIG_OF_SEPARATE) += $(if $(CONFIG_OF_OMIT_DTB),dts/dt.dtb,u-boot.dtb)
@@ -2117,6 +2124,13 @@ tpl/u-boot-tpl.bin: tpl/u-boot-tpl
tpl/u-boot-tpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb)
$(Q)$(MAKE) obj=tpl -f $(srctree)/scripts/Makefile.spl all
vpl/u-boot-vpl.bin: vpl/u-boot-vpl
@:
$(VPL_SIZE_CHECK)
vpl/u-boot-vpl: tools prepare $(if $(CONFIG_TPL_OF_CONTROL),dts/dt.dtb)
$(Q)$(MAKE) obj=vpl -f $(srctree)/scripts/Makefile.spl all
TAG_SUBDIRS := $(patsubst %,$(srctree)/%,$(u-boot-dirs) include)
FIND := find