riscv: create a loader.bin boot image for Kendryte SoC

Create the loader.bin bootable image file that can be loaded into
Kendryte K210 based boards using the kflash.py tool with the command:

kflash.py/kflash.py -t arch/riscv/boot/loader.bin

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>

diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index b9009a2fbaf5c4dd7965f75264dee93539308019..0e94ff8ec1f7dd146a57998287e18fed66be167b 100644 (file)
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -83,12 +83,12 @@ PHONY += vdso_install
 vdso_install:
        $(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@
 
-ifeq ($(CONFIG_RISCV_M_MODE),y)
-KBUILD_IMAGE := $(boot)/loader
+ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_SOC_KENDRYTE),yy)
+KBUILD_IMAGE := $(boot)/loader.bin
 else
 KBUILD_IMAGE := $(boot)/Image.gz
 endif
-BOOT_TARGETS := Image Image.gz loader
+BOOT_TARGETS := Image Image.gz loader loader.bin
 
 all:   $(notdir $(KBUILD_IMAGE))
 

diff --git a/arch/riscv/boot/Makefile b/arch/riscv/boot/Makefile
index 36db8145f9f46013c2b1b31e3c7e9f75e4dce349..3530c59b3ea7372102a5516dfd6c0b63efbe1d1d 100644 (file)
--- a/arch/riscv/boot/Makefile
+++ b/arch/riscv/boot/Makefile
@@ -41,6 +41,9 @@ $(obj)/Image.lzma: $(obj)/Image FORCE
 $(obj)/Image.lzo: $(obj)/Image FORCE
        $(call if_changed,lzo)
 
+$(obj)/loader.bin: $(obj)/loader FORCE
+       $(call if_changed,objcopy)
+
 install:
        $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
        $(obj)/Image System.map "$(INSTALL_PATH)"