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Introduce rbutil/mkzenboot, a replacement for tools/mkzenboot

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The old tools/mkzenboot has a number of problems: very hard to maintain,
poor integration with rbutil. Restart from scratch by recycling all the
crypto and descrambling code, rewrite the actual firmware modification part
to handle all scenarios in a much clearer way. The code is ready to be
integrated into Rockbox Utility, by using the very similar interface to
mkimxboot.
I copied all the keys from the old mkzenboot, so it can potentially support
the older Creative ports, but since this is untested, I prefer not do so
at the moment. However, I did add a "mixed" boot option to support the
dualboot style used in the older ports.

Change-Id: I80cfc48fa78187baa1b1692e8a30ec7137cea37b
This commit is contained in:
Amaury Pouly 2013-10-22 00:48:33 +02:00
parent 5cfb148ae2
commit 2e0c558064
15 changed files with 2574 additions and 0 deletions
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50
rbutil/mkzenboot/dualboot/Makefile Normal file
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CC=gcc
LD=ld
OC=objcopy
CROSS_PREFIX=arm-elf-eabi-
REGS_PATH=../../../firmware/target/arm/imx233/regs
CFLAGS=-mcpu=arm926ej-s -std=gnu99 -I. -I$(REGS_PATH) -nostdlib -ffreestanding -fomit-frame-pointer -O
LDFLAGS=
# Edit the following variables when adding a new target.
# mkimxboot.c also needs to be edited to refer to these
# To add a new target x you need to:
# 1) add x to the list in TARGETS
# 2) create a variable named OPT_x of the form:
# OPT_x=target specific defines
TARGETS=zenmozaic zenxfi zen
OPT_zenmozaic=-DCREATIVE_ZENMOZAIC -DIMX233_SUBTARGET=3700
OPT_zenxfi=-DCREATIVE_ZENXFI -DIMX233_SUBTARGET=3700
OPT_zen=-DCREATIVE_ZEN -DIMX233_SUBTARGET=3700
BOOTLDS=$(patsubst %, dualboot_%.lds, $(TARGETS))
BOOTOBJS=$(patsubst %, dualboot_%.o, $(TARGETS))
BOOTBINS=$(patsubst %, dualboot_%.arm-bin, $(TARGETS))
BOOTELFS=$(patsubst %, dualboot_%.arm-elf, $(TARGETS))
all: ../dualboot.h ../dualboot.c $(BOOTELFS)
# Dualboot bootloaders
dualboot_%.o: dualboot.c
$(CROSS_PREFIX)$(CC) $(CFLAGS) $(OPT_$(@:dualboot_%.o=%)) -c -o $@ $^
dualboot_%.lds: dualboot.lds
$(CROSS_PREFIX)$(CC) $(CFLAGS) $(OPT_$(@:dualboot_%.lds=%)) -E -x c - < $< | sed '/#/d' > $@
dualboot_%.arm-elf: dualboot_%.o dualboot_%.lds
$(CROSS_PREFIX)$(LD) $(LDFLAGS) -T$(@:dualboot_%.arm-elf=dualboot_%.lds) -o $@ $<
# Rules for the ARM code embedded in mkamsboot - assemble, link, then extract
# the binary code and finally convert to .h for building in mkamsboot
%.arm-bin: %.arm-elf
$(CROSS_PREFIX)$(OC) -O binary $< $@
../dualboot.c ../dualboot.h: $(BOOTBINS) bin2c
./bin2c ../dualboot $(BOOTBINS)
bin2c: bin2c.c
$(CC) -o bin2c bin2c.c
clean:
rm -f *~ bin2c $(BOOTBINS) $(BOOTOBJS) $(BOOTELFS) $(BOOTLDS)