len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-09 05:05:20 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

mkimxboot: rewrite dualboot

Browse source 
Rewrite dualboot in C code instead of assembly. Also properly
handle subtarget and simply Makefile. This should make the
dualboot stub more readable and easier to extend. The new code
also gracefully handles power up from RTC alarm on imx233.

Change-Id: I7c225254b1463a97e76b6cb4de476aa2d2c9d2f9
This commit is contained in:
Amaury Pouly 2013-07-07 17:34:04 +02:00
parent 3afcb53fb9
commit 03a4ba5481
6 changed files with 221 additions and 160 deletions
Download patch file Download diff file Expand all files Collapse all files

39
rbutil/mkimxboot/dualboot/Makefile
View file

@ -1,33 +1,38 @@
CC=gcc
CROSS_PREFIX=arm-elf-eabi
# Edit the following variables (plus copy/paste another set of rules) when
# adding a new target. mkimxboot.c also needs to be edited to refer to these
# new images.
LD=ld
OC=objcopy
CROSS_PREFIX=arm-elf-eabi-
REGS_PATH=../../../firmware/target/arm/imx233/regs
CFLAGS=-mcpu=arm926ej-s -std=gnu99 -I. -I$(REGS_PATH) -nostdlib -ffreestanding -fomit-frame-pointer -O
# Edit the following variables when adding a new target.
# mkimxboot.c also needs to be edited to refer to these
# To add a new target x you need to:
# 1) add x to the list in TARGETS
# 2) create a variable named OPT_x of the form:
# OPT_x=target specific defines
TARGETS=fuzeplus zenxfi2 zenxfi3
OPT_fuzeplus=-DSANSA_FUZEPLUS -DIMX233_SUBTARGET=3780
OPT_zenxfi2=-DCREATIVE_ZENXFI2 -DIMX233_SUBTARGET=3780
OPT_zenxfi3=-DCREATIVE_ZENXFI3 -DIMX233_SUBTARGET=3780
BOOTOBJS = dualboot_fuzeplus.o dualboot_zenxfi2.o dualboot_zenxfi3.o
BOOTBINS = dualboot_fuzeplus.arm-bin dualboot_zenxfi2.arm-bin dualboot_zenxfi3.arm-bin
BOOTOBJS=$(patsubst %, dualboot_%.o, $(TARGETS))
BOOTBINS=$(patsubst %, dualboot_%.arm-bin, $(TARGETS))
all: ../dualboot.h ../dualboot.c
# Dualboot bootloaders
dualboot_fuzeplus.o: dualboot.S
$(CROSS_PREFIX)-$(CC) -mcpu=arm926ej-s -DSANSA_FUZEPLUS -c -o dualboot_fuzeplus.o dualboot.S
dualboot_%.o: dualboot.c
$(CROSS_PREFIX)$(CC) $(CFLAGS) $(OPT_$(@:dualboot_%.o=%)) -c -o $@ $^
dualboot_zenxfi2.o: dualboot.S
$(CROSS_PREFIX)-$(CC) -mcpu=arm926ej-s -DCREATIVE_ZENXFI2 -c -o dualboot_zenxfi2.o dualboot.S
dualboot_zenxfi3.o: dualboot.S
$(CROSS_PREFIX)-$(CC) -mcpu=arm926ej-s -DCREATIVE_ZENXFI3 -c -o dualboot_zenxfi3.o dualboot.S
dualboot_%.arm-elf: dualboot_%.o
$(CROSS_PREFIX)$(LD) $(LDFLAGS) -Tdualboot.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-elf: %.o
$(CROSS_PREFIX)-ld -Tdualboot.lds -o $@ $<
%.arm-bin: %.arm-elf
$(CROSS_PREFIX)-objcopy -O binary $< $@
$(CROSS_PREFIX)$(OC) -O binary $< $@
../dualboot.c ../dualboot.h: $(BOOTBINS) bin2c
./bin2c ../dualboot $(BOOTBINS)