Blackfin: support embedding the environment into loader files (LDRs)

For the most part, the Blackfin processor boots files in the LDR format
rather than binary/ELF files.  So we want to export the environment as a
raw blob to the LDR utility so it can embed it at the right location.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/Makefile b/Makefile
index 285f11635382b6c04659746815cecb705dfb2390..2f875958b4d897ce2ef9be4c3142115443012604 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -323,6 +323,7 @@ $(obj)u-boot.bin:   $(obj)u-boot
                $(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
 
 $(obj)u-boot.ldr:      $(obj)u-boot
+               $(obj)tools/envcrc --binary > $(obj)env-ldr.o
                $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
 
 $(obj)u-boot.ldr.hex:  $(obj)u-boot.ldr

diff --git a/blackfin_config.mk b/blackfin_config.mk
index 05077c819b3732a422f188060fa648c761e911ed..00e3bfc62d3d767b3665a2c82390e86dd0dfe15e 100644 (file)
--- a/blackfin_config.mk
+++ b/blackfin_config.mk
@@ -23,6 +23,8 @@
 
 CONFIG_BFIN_CPU := $(strip $(subst ",,$(CONFIG_BFIN_CPU)))
 CONFIG_BFIN_BOOT_MODE := $(strip $(subst ",,$(CONFIG_BFIN_BOOT_MODE)))
+CONFIG_ENV_OFFSET := $(strip $(subst ",,$(CONFIG_ENV_OFFSET)))
+CONFIG_ENV_SIZE := $(strip $(subst ",,$(CONFIG_ENV_SIZE)))
 
 PLATFORM_RELFLAGS += -ffixed-P5 -fomit-frame-pointer -mno-fdpic
 PLATFORM_CPPFLAGS += -DCONFIG_BLACKFIN
@@ -43,6 +45,11 @@ LDR_FLAGS += --bmode $(subst BFIN_BOOT_,,$(CONFIG_BFIN_BOOT_MODE))
 LDR_FLAGS += --use-vmas
 ifneq ($(CONFIG_BFIN_BOOT_MODE),BFIN_BOOT_BYPASS)
 LDR_FLAGS += --initcode $(obj)cpu/$(CPU)/initcode.o
+ifneq ($(CONFIG_BFIN_BOOT_MODE),BFIN_BOOT_UART)
+ifneq ($(ENV_IS_EMBEDDED_CUSTOM),ENV_IS_EMBEDDED_CUSTOM)
+LDR_FLAGS += --punchit $$(($(CONFIG_ENV_OFFSET))):$$(($(CONFIG_ENV_SIZE))):$(obj)env-ldr.o
+endif
+endif
 endif
 ifneq (,$(findstring s,$(MAKEFLAGS)))
 LDR_FLAGS += --quiet