Can be used during manufacturing to avoid bootloader
console usage and speed up first boot.

Signed-off-by: Bruno Thomsen <[email protected]>
---
 platforms/u-boot.in | 28 ++++++++++++++++++++++++++++
 rules/u-boot.make   | 11 +++++++++++
 2 files changed, 39 insertions(+)

diff --git a/platforms/u-boot.in b/platforms/u-boot.in
index 9bac4a758..d9195d7cd 100644
--- a/platforms/u-boot.in
+++ b/platforms/u-boot.in
@@ -2,6 +2,7 @@
 
 menuconfig U_BOOT
        select BOOTLOADER
+       select HOST_U_BOOT_TOOLS if U_BOOT_DEFAULT_ENV_IMAGE
        prompt "U-Boot                        "
        bool
 
@@ -71,6 +72,33 @@ config U_BOOT_CONFIG
 
 endif
 
+config U_BOOT_DEFAULT_ENV_IMAGE
+       prompt "Generate U-Boot default environment image"
+       bool
+       help
+         Use U-Boot's mkenvimage to compile a U-Boot default environment
+         image for use in device manufacturing.
+
+if U_BOOT_DEFAULT_ENV_IMAGE
+
+config U_BOOT_DEFAULT_ENV_IMAGE_SIZE
+       prompt "Default environment image size"
+       string
+       default "0x2000"
+       help
+         Enter the U-Boot environment size for generation of manufacturing
+         image. Size can be prefixed with 0x for hexadecimal values.
+         Must match size defined in target config and "/etc/fw_env.config".
+
+config U_BOOT_DEFAULT_ENV_IMAGE_REDUNDANT
+       prompt "Default environment image with redundant copy"
+       bool
+       help
+         Use to generate a redundant environment in the default image.
+         Must match target config and "/etc/fw_env.config".
+
+endif
+
 config U_BOOT_BOOT_SCRIPT
        prompt "Compile U-Boot boot script"
        bool
diff --git a/rules/u-boot.make b/rules/u-boot.make
index 8f9290ea7..b6e65a95a 100644
--- a/rules/u-boot.make
+++ b/rules/u-boot.make
@@ -94,6 +94,13 @@ ifdef PTXCONF_U_BOOT_BOOT_SCRIPT
        @$(U_BOOT_DIR)/tools/mkimage -T script -C none \
                -d $(U_BOOT_BOOT_SCRIPT_TXT) \
                $(U_BOOT_DIR)/boot.scr.uimg
+endif
+ifdef PTXCONF_U_BOOT_DEFAULT_ENV_IMAGE
+       $(U_BOOT_MAKE_ENV) $(U_BOOT_DIR)/scripts/get_default_envs.sh | \
+               $(PTXDIST_SYSROOT_HOST)/bin/mkenvimage -p 0x0 \
+               $(call 
ptx/ifdef,PTXCONF_U_BOOT_DEFAULT_ENV_IMAGE_REDUNDANT,-r,) \
+               -s $(PTXCONF_U_BOOT_DEFAULT_ENV_IMAGE_SIZE) \
+               -o $(U_BOOT_DIR)/u-boot-env.img -
 endif
        @$(call touch)
 
@@ -141,6 +148,10 @@ ifdef PTXCONF_U_BOOT_INSTALL_U_BOOT_WITH_SPL_PBL
        @install -v -D -m644 $(U_BOOT_DIR)/u-boot-with-spl-pbl.bin \
                $(IMAGEDIR)/u-boot-with-spl-pbl.bin
 endif
+ifdef PTXCONF_U_BOOT_DEFAULT_ENV_IMAGE
+       @install -v -D -m644 $(U_BOOT_DIR)/u-boot-env.img \
+               $(IMAGEDIR)/u-boot-env.img
+endif
 
 ifdef PTXCONF_U_BOOT_BOOT_SCRIPT
        @$(call install_init, u-boot)
-- 
2.23.0


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