AXS10x boards have preloader that reads SPI flash pages and searches special image header to fetch and load binary. Add tool, make target (bsp-generate) to generate update script and u-boot binary image with header for preloader. Also add script to default environment to apply updates. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>lime2-spi
Eugeniy Paltsev
6 years ago
committed by
Alexey Brodkin
parent
cdfe6913c1
commit
817cd83435
@ -0,0 +1,23 @@ |
||||
# SPDX-License-Identifier: GPL-2.0+
|
||||
#
|
||||
# Copyright (C) 2018 Synopsys, Inc. All rights reserved.
|
||||
|
||||
bsp-generate: u-boot u-boot.bin |
||||
ifdef CONFIG_ISA_ARCV2 |
||||
$(Q)python3 $(srctree)/board/$(BOARDDIR)/headerize-axs.py \
|
||||
--header-type v2 \
|
||||
--arc-id 0x53 \
|
||||
--spi-flash-offset 0x200000 \
|
||||
--image $(srctree)/u-boot.bin \
|
||||
--elf $(srctree)/u-boot
|
||||
else |
||||
$(Q)python3 $(srctree)/board/$(BOARDDIR)/headerize-axs.py \
|
||||
--header-type v1 \
|
||||
--arc-id 0x434 \
|
||||
--spi-flash-offset 0x0 \
|
||||
--image $(srctree)/u-boot.bin \
|
||||
--elf $(srctree)/u-boot
|
||||
endif |
||||
$(Q)mkimage -T script -C none -n 'uboot update script' \
|
||||
-d $(srctree)/u-boot-update.txt \
|
||||
$(srctree)/u-boot-update.img &> /dev/null
|
||||
@ -0,0 +1,176 @@ |
||||
#!/usr/bin/env python3 |
||||
|
||||
#we can use binascii instead of zlib |
||||
import os, getopt, sys, zlib |
||||
from elftools.elf.elffile import ELFFile |
||||
|
||||
|
||||
def usage(exit_code): |
||||
print("typical usage:") |
||||
print("AXS101:") |
||||
print(sys.argv[0] + \ |
||||
" --header-type v1 --arc-id 0x434 --spi-flash-offset 0x0 --image u-boot.bin --elf u-boot") |
||||
print("AXS103:") |
||||
print(sys.argv[0] + \ |
||||
" --header-type v2 --arc-id 0x53 --spi-flash-offset 0x200000 --image u-boot.bin --elf u-boot") |
||||
sys.exit(exit_code) |
||||
|
||||
|
||||
def elf_get_entry(filename): |
||||
with open(filename, 'rb') as f: |
||||
elffile = ELFFile(f) |
||||
return elffile.header['e_entry'] |
||||
|
||||
|
||||
def calc_check_sum(filename): |
||||
# Calculate u-boot image check_sum: it is sum of all u-boot binary bytes |
||||
with open(filename, "rb") as file: |
||||
ba = bytearray(file.read()) |
||||
return sum(ba) & 0xFF |
||||
|
||||
|
||||
def arg_verify(uboot_bin_filename, uboot_elf_filename, header_type): |
||||
if not os.path.isfile(uboot_bin_filename): |
||||
print("uboot bin file not exists: " + uboot_bin_filename) |
||||
sys.exit(2) |
||||
|
||||
if not os.path.isfile(uboot_elf_filename): |
||||
print("uboot elf file not exists: " + uboot_elf_filename) |
||||
sys.exit(2) |
||||
|
||||
if header_type not in ("v1", "v2"): |
||||
print("unknown header type: " + header_type) |
||||
print("choose between 'v1' (most likely AXS101) and 'v2' (most likely AXS103)") |
||||
sys.exit(2) |
||||
|
||||
|
||||
def main(): |
||||
try: |
||||
opts, args = getopt.getopt(sys.argv[1:], |
||||
"ht:a:s:i:l:e:", |
||||
["help", "header-type=", "arc-id=", "spi-flash-offset=", "image=", "elf="]) |
||||
except getopt.GetoptError as err: |
||||
print(err) |
||||
usage(2) |
||||
|
||||
# default filenames |
||||
uboot_elf_filename = "u-boot" |
||||
uboot_bin_filename = "u-boot.bin" |
||||
headerised_filename = "u-boot.head" |
||||
uboot_scrypt_file = "u-boot-update.txt" |
||||
|
||||
# default values |
||||
spi_flash_offset = 0x200000 |
||||
header_type = "v2" |
||||
arc_id = 0x53 |
||||
|
||||
# initial header values: place where preloader will store u-boot binary, |
||||
# should be equal to CONFIG_SYS_TEXT_BASE |
||||
image_copy_adr = 0x81000000 |
||||
|
||||
# initial constant header values, do not change these values |
||||
magic1 = 0xdeadbeafaf # big endian byte order |
||||
magic2 = [ # big endian byte order |
||||
0x20202a2020202020202020202a20202020207c5c2e20202020202e2f7c20202020207c2d, |
||||
0x2e5c2020202f2e2d7c20202020205c2020602d2d2d6020202f20202020202f205f202020, |
||||
0x205f20205c20202020207c205f60712070205f207c2020202020272e5f3d2f205c3d5f2e, |
||||
0x272020202020202020605c202f60202020202020202020202020206f2020202020202020] |
||||
|
||||
for opt, arg in opts: |
||||
if opt in ('-h', "--help"): usage(0) |
||||
if opt in ('-t', "--header-type"): header_type = arg |
||||
if opt in ('-a', "--arc-id"): arc_id = int(arg, 16) |
||||
if opt in ('-s', "--spi-flash-offset"): spi_flash_offset = int(arg, 16) |
||||
if opt in ('-i', "--image"): uboot_bin_filename = arg |
||||
if opt in ('-e', "--elf"): uboot_elf_filename = arg |
||||
|
||||
arg_verify(uboot_bin_filename, uboot_elf_filename, header_type) |
||||
|
||||
uboot_img_size = os.path.getsize(uboot_bin_filename) |
||||
jump_address = elf_get_entry(uboot_elf_filename) |
||||
check_sum = calc_check_sum(uboot_bin_filename) |
||||
|
||||
# Calculate header adresses depend on header type |
||||
if header_type == "v2": |
||||
image_copy_adr -= 0x4 |
||||
uboot_img_size += 0x4 |
||||
# we append image so we need to append checksum |
||||
jmpchk_sum = sum(jump_address.to_bytes(4, byteorder='big')) |
||||
check_sum = (check_sum + jmpchk_sum) & 0xFF |
||||
imade_jump_append = True |
||||
else: |
||||
imade_jump_append = False |
||||
|
||||
# write header to file |
||||
with open(headerised_filename, "wb") as file: |
||||
file.write(arc_id.to_bytes(2, byteorder='little')) |
||||
file.write(uboot_img_size.to_bytes(4, byteorder='little')) |
||||
file.write(check_sum.to_bytes(1, byteorder='little')) |
||||
file.write(image_copy_adr.to_bytes(4, byteorder='little')) |
||||
file.write(magic1.to_bytes(5, byteorder='big')) |
||||
for i in range(16): file.write(0x00.to_bytes(1, byteorder='little')) |
||||
for byte in magic2: file.write(byte.to_bytes(36, byteorder='big')) |
||||
for i in range(224 - len(magic2) * 36): |
||||
file.write(0x00.to_bytes(1, byteorder='little')) |
||||
if imade_jump_append: |
||||
file.write(jump_address.to_bytes(4, byteorder='little')) |
||||
|
||||
# append u-boot image to header |
||||
with open(headerised_filename, "ab") as fo: |
||||
with open(uboot_bin_filename,'rb') as fi: |
||||
fo.write(fi.read()) |
||||
|
||||
# calc u-boot headerised image CRC32 (will be used by uboot update |
||||
# command for check) |
||||
headerised_image_crc = "" |
||||
with open(headerised_filename, "rb") as fi: |
||||
headerised_image_crc = hex(zlib.crc32(fi.read()) & 0xffffffff) |
||||
|
||||
load_addr = 0x81000000 |
||||
crc_store_adr = load_addr - 0x8 |
||||
crc_calc_adr = crc_store_adr - 0x4 |
||||
load_size = os.path.getsize(headerised_filename) |
||||
crc_calc_cmd = \ |
||||
"crc32 " + hex(load_addr) + " " + hex(load_size) + " " + hex(crc_calc_adr) |
||||
crc_check_cmd = \ |
||||
"mw.l " + hex(crc_store_adr) + " " + headerised_image_crc + " && " + \ |
||||
crc_calc_cmd + " && " + \ |
||||
"cmp.l " + hex(crc_store_adr) + " " + hex(crc_calc_adr) + " 1" |
||||
|
||||
# make errase size to be allighned by 64K |
||||
if load_size & 0xFFFF == 0: |
||||
errase_size = load_size |
||||
else: |
||||
errase_size = load_size - (load_size & 0xFFFF) + 0x10000 |
||||
|
||||
# Hack to handle n25*** flash protect ops weirdness: |
||||
# protect unlock return fail status is region is already unlock (entire or |
||||
# partially). Same for lock ops. |
||||
# As there is no possibility to check current flash status pretend |
||||
# unlock & lock always success. |
||||
sf_unlock_cmd = \ |
||||
"if sf protect unlock 0x0 0x4000000 ; then true ; else true ; fi" |
||||
sf_lock_cmd = \ |
||||
"if sf protect lock 0x0 0x4000000 ; then true ; else true ; fi" |
||||
|
||||
# u-bood CMD to load u-bood with header to SPI flash |
||||
sf_load_image_cmd = \ |
||||
"fatload mmc 0:1 " + hex(load_addr) + " " + headerised_filename + " && " + \ |
||||
"sf probe 0:0 && " + \ |
||||
sf_unlock_cmd + " && " + \ |
||||
"sf erase " + hex(spi_flash_offset) + " " + hex(errase_size) + " && " + \ |
||||
"sf write " + hex(load_addr) + " " + hex(spi_flash_offset) + " " + hex(load_size) + " && " + \ |
||||
sf_lock_cmd |
||||
|
||||
update_uboot_cmd = sf_load_image_cmd + " && echo \"u-boot update: OK\"" |
||||
|
||||
with open(uboot_scrypt_file, "wb") as fo: |
||||
fo.write(update_uboot_cmd.encode('ascii')) |
||||
|
||||
|
||||
if __name__ == "__main__": |
||||
try: |
||||
main() |
||||
except Exception as err: |
||||
print(err) |
||||
sys.exit(2) |
||||
Loading…
Reference in new issue