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Bernhard Nortmann 17164d8d9a fel-sdboot: Fix header corruption workaround, implement in assembly 
Now that we have a better understanding of what's causing the issue
that prevented entering FEL sometimes, we can adjust the workaround
code to a proper solution, i.e. skip over the problematic location.

Since the code amounts to less than a dozen ARM instructions, I've
decided to rewrite it as assembly code - fel-sdboot.S replaces the
former fel-sdboot.c.

The commit also includes a new binary (bin/fel-sdboot.sunxi) with
these changes.

Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de>
Reviewed-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
2016-05-28 12:32:55 +02:00

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Makefile
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# Copyright (C) 2012 Alejandro Mery <amery@geeks.cl>
# Copyright (C) 2012,2013 Henrik Nordstrom <henrik@henriknordstrom.net>
# Copyright (C) 2013 Patrick Wood <patrickhwood@gmail.com>
# Copyright (C) 2013 Pat Wood <Pat.Wood@efi.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
CC ?= gcc
CFLAGS = -g -O0 -Wall -Wextra $(EXTRA_CFLAGS)
CFLAGS += -std=c99 $(DEFINES)
CFLAGS += -Iinclude/
DEFINES = -D_POSIX_C_SOURCE=200112L
# Define _BSD_SOURCE, necessary to expose all endian conversions properly.
# See http://linux.die.net/man/3/endian
DEFINES += -D_BSD_SOURCE
# glibc 2.20+ also requires _DEFAULT_SOURCE
DEFINES += -D_DEFAULT_SOURCE
ifeq (NetBSD,$(OS))
# add explicit _NETBSD_SOURCE, see https://github.com/linux-sunxi/sunxi-tools/pull/22
DEFINES += -D_NETBSD_SOURCE
endif
# Tools useful on host and target
TOOLS = sunxi-fexc sunxi-bootinfo sunxi-fel sunxi-nand-part
# Symlinks to sunxi-fexc
FEXC_LINKS = bin2fex fex2bin
# Tools which are only useful on the target
TARGET_TOOLS = sunxi-pio
MISC_TOOLS = phoenix_info
# ARM binaries and images
# Note: To use this target, set/adjust CROSS_COMPILE and MKSUNXIBOOT if needed
BINFILES = fel-pio.bin jtag-loop.sunxi fel-sdboot.sunxi
CROSS_COMPILE ?= arm-none-eabi-
MKSUNXIBOOT ?= mksunxiboot
DESTDIR ?=
PREFIX ?= /usr/local
BINDIR ?= $(PREFIX)/bin
.PHONY: all clean tools target-tools install install-tools install-target-tools
all: tools target-tools
tools: $(TOOLS) $(FEXC_LINKS)
target-tools: $(TARGET_TOOLS)
misc: $(MISC_TOOLS)
binfiles: $(BINFILES)
install: install-tools install-target-tools
install-tools: $(TOOLS)
install -d $(DESTDIR)$(BINDIR)
@set -ex ; for t in $^ ; do \
install -m0755 $$t $(DESTDIR)$(BINDIR)/$$t ; \
done
@set -ex ; for l in $(FEXC_LINKS) ; do \
ln -nfs sunxi-fexc $(DESTDIR)$(BINDIR)/$$l ; \
done
install-target-tools: $(TARGET_TOOLS)
install -d $(DESTDIR)$(BINDIR)
@set -ex ; for t in $^ ; do \
install -m0755 $$t $(DESTDIR)$(BINDIR)/$$t ; \
done
clean:
@rm -vf $(TOOLS) $(FEXC_LINKS) $(TARGET_TOOLS) $(MISC_TOOLS)
@rm -vf *.o *.elf *.sunxi *.bin *.nm *.orig
$(TOOLS) $(TARGET_TOOLS): Makefile common.h
fex2bin bin2fex: sunxi-fexc
ln -nsf $< $@
sunxi-fexc: fexc.h script.h script.c \
script_uboot.h script_uboot.c \
script_bin.h script_bin.c \
script_fex.h script_fex.c
LIBUSB = libusb-1.0
LIBUSB_CFLAGS = `pkg-config --cflags $(LIBUSB)`
LIBUSB_LIBS = `pkg-config --libs $(LIBUSB)`
sunxi-fel: fel.c fel-to-spl-thunk.h progress.c progress.h
$(CC) $(CFLAGS) $(LIBUSB_CFLAGS) $(LDFLAGS) -o $@ $(filter %.c,$^) $(LIBS) $(LIBUSB_LIBS)
sunxi-nand-part: nand-part-main.c nand-part.c nand-part-a10.h nand-part-a20.h
$(CC) $(CFLAGS) -c -o nand-part-main.o nand-part-main.c
$(CC) $(CFLAGS) -c -o nand-part-a10.o nand-part.c -D A10
$(CC) $(CFLAGS) -c -o nand-part-a20.o nand-part.c -D A20
$(CC) $(LDFLAGS) -o $@ nand-part-main.o nand-part-a10.o nand-part-a20.o $(LIBS)
sunxi-%: %.c
$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(filter %.c,$^) $(LIBS)
%.bin: %.elf
$(CROSS_COMPILE)objcopy -O binary $< $@
%.sunxi: %.bin
$(MKSUNXIBOOT) $< $@
fel-pio.bin: fel-pio.elf fel-pio.nm
ARM_ELF_FLAGS = -Os -marm -fpic -Wall
ARM_ELF_FLAGS += -fno-common -fno-builtin -ffreestanding -nostdinc
ARM_ELF_FLAGS += -mno-thumb-interwork -fno-stack-protector -fno-toplevel-reorder
ARM_ELF_FLAGS += -Wstrict-prototypes -Wno-format-nonliteral -Wno-format-security
fel-pio.elf: fel-pio.c fel-pio.lds
$(CROSS_COMPILE)gcc -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T fel-pio.lds
fel-pio.nm: fel-pio.elf
$(CROSS_COMPILE)nm $< | grep -v " _" >$@
jtag-loop.elf: jtag-loop.c jtag-loop.lds
$(CROSS_COMPILE)gcc -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T jtag-loop.lds -Wl,-N
fel-sdboot.elf: fel-sdboot.S fel-sdboot.lds
$(CROSS_COMPILE)gcc -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T fel-sdboot.lds -Wl,-N
boot_head_sun3i.elf: boot_head.S boot_head.lds
$(CROSS_COMPILE)gcc -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T boot_head.lds -Wl,-N -DMACHID=0x1094
boot_head_sun4i.elf: boot_head.S boot_head.lds
$(CROSS_COMPILE)gcc -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T boot_head.lds -Wl,-N -DMACHID=0x1008
boot_head_sun5i.elf: boot_head.S boot_head.lds
$(CROSS_COMPILE)gcc -g $(ARM_ELF_FLAGS) $< -nostdlib -o $@ -T boot_head.lds -Wl,-N -DMACHID=0x102A
sunxi-bootinfo: bootinfo.c
sunxi-meminfo: meminfo.c
$(CROSS_COMPILE)gcc -g -O0 -Wall -static -o $@ $^
sunxi-script_extractor: script_extractor.c
$(CROSS_COMPILE)gcc -g -O0 -Wall -static -o $@ $^
.gitignore: Makefile
@for x in $(TOOLS) $(FEXC_LINKS) $(TARGET_TOOLS) '*.o' '*.swp'; do \
echo "$$x"; \
done > $@
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