[PATCH v4 16/19] boot: Allow use of FIT in TPL and VPL

[Simon Glass]

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 at chromium.org>
---

(no changes since v1)

 boot/Kconfig                  | 69 ++++++++++++++++++++++++++++++++++-
 configs/sandbox_vpl_defconfig |  2 +
 2 files changed, 70 insertions(+), 1 deletion(-)

diff --git a/boot/Kconfig b/boot/Kconfig
index 99dcedcc840..cdf787eb5c2 100644
--- a/boot/Kconfig
+++ b/boot/Kconfig
@@ -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
@@ -292,6 +326,22 @@ 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
@@ -620,6 +670,15 @@ 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
@@ -698,7 +757,15 @@ 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"
diff --git a/configs/sandbox_vpl_defconfig b/configs/sandbox_vpl_defconfig
index 84df2b85260..46329395ba5 100644
--- a/configs/sandbox_vpl_defconfig
+++ b/configs/sandbox_vpl_defconfig
@@ -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
-- 
2.34.1