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boot: Allow use of FIT in TPL and VPL

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With VBE we want to use FIT in all phases of the boot. Add Kconfig
options to support this.

Disable the options for sandbox_vpl for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2024-12-07 10:24:09 -07:00 • committed by Tom Rini
parent 214dc4a160
commit d5597ef845
2 changed files with 70 additions and 1 deletions
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69
boot/Kconfig
View file

@ -163,6 +163,18 @@ config SPL_FIT
select SPL_HASH
select SPL_OF_LIBFDT
config VPL_FIT
bool "Support Flattened Image Tree within VPL"
depends on VPL
select VPL_HASH
select VPL_OF_LIBFDT
config TPL_FIT
bool "Support Flattened Image Tree within TPL"
depends on TPL
select TPL_HASH
select TPL_OF_LIBFDT
config SPL_FIT_PRINT
bool "Support FIT printing within SPL"
depends on SPL_FIT
@ -268,6 +280,28 @@ config SPL_LOAD_FIT_FULL
particular it can handle selecting from multiple device tree
and passing the correct one to U-Boot.
config TPL_LOAD_FIT
bool "Enable TPL loading U-Boot as a FIT (basic fitImage features)"
depends on TPL
select TPL_FIT
help
Normally with the SPL framework a legacy image is generated as part
of the build. This contains U-Boot along with information as to
where it should be loaded. This option instead enables generation
of a FIT (Flat Image Tree) which provides more flexibility. In
particular it can handle selecting from multiple device tree
and passing the correct one to U-Boot.
This path has the following limitations:
1. "loadables" images, other than FDTs, which do not have a "load"
property will not be loaded. This limitation also applies to FPGA
images with the correct "compatible" string.
2. For FPGA images, the supported "compatible" list is in the
doc/uImage.FIT/source_file_format.txt.
3. FDTs are only loaded for images with an "os" property of "u-boot".
"linux" images are also supported with Falcon boot mode.
config SPL_FIT_IMAGE_POST_PROCESS
bool "Enable post-processing of FIT artifacts after loading by the SPL"
depends on SPL_LOAD_FIT
@ -307,6 +341,22 @@ config VPL_FIT
select VPL_HASH
select VPL_OF_LIBFDT
config VPL_LOAD_FIT
bool "Enable VPL loading U-Boot as a FIT (basic fitImage features)"
select VPL_FIT
default y
config VPL_LOAD_FIT_FULL
bool "Enable SPL loading U-Boot as a FIT (full fitImage features)"
select VPL_FIT
help
Normally with the SPL framework a legacy image is generated as part
of the build. This contains U-Boot along with information as to
where it should be loaded. This option instead enables generation
of a FIT (Flat Image Tree) which provides more flexibility. In
particular it can handle selecting from multiple device tree
and passing the correct one to U-Boot.
config VPL_FIT_PRINT
bool "Support FIT printing within VPL"
depends on VPL_FIT
@ -635,6 +685,15 @@ config VPL_BOOTMETH_VBE
supports selection of various firmware components, selection of an OS to
boot as well as updating these using fwupd.
config TPL_BOOTMETH_VBE
bool "Bootdev support for Verified Boot for Embedded (TPL)"
depends on TPL
default y
help
Enables support for VBE boot. This is a standard boot method which
supports selection of various firmware components, seleciton of an OS to
boot as well as updating these using fwupd.
if BOOTMETH_VBE
config BOOTMETH_VBE_REQUEST
@ -713,7 +772,15 @@ config VPL_BOOTMETH_VBE_SIMPLE_FW
This option enabled for VPL, since it is the phase where the SPL
decision is made.
endif # BOOTMETH_VBE
config TPL_BOOTMETH_VBE_SIMPLE_FW
bool "Bootdev support for VBE 'simple' method firmware phase (TPL)"
depends on VPL
default y
help
Enables support for the firmware parts of VBE 'simple' boot, in TPL.
TPL loads a FIT containing the VPL binary and a suitable devicetree.
endif # BOOTMETH_VBE_SIMPLE
config EXPO
bool "Support for expos - groups of scenes displaying a UI"

2
configs/sandbox_vpl_defconfig
View file

@ -27,6 +27,8 @@ CONFIG_FIT=y
CONFIG_FIT_VERBOSE=y
CONFIG_FIT_BEST_MATCH=y
CONFIG_SPL_LOAD_FIT=y
# CONFIG_TPL_BOOTMETH_VBE is not set
# CONFIG_TPL_BOOTMETH_VBE_SIMPLE_FW is not set
CONFIG_UPL=y
CONFIG_UPL_IN=y
CONFIG_BOOTSTAGE=y