HSDK board has 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 --- board/synopsys/hsdk/config.mk | 11 +++ board/synopsys/hsdk/headerize-hsdk.py | 147 ++++++++++++++++++++++++++++++++++ include/configs/hsdk.h | 6 ++ 3 files changed, 164 insertions(+) create mode 100644 board/synopsys/hsdk/config.mk create mode 100644 board/synopsys/hsdk/headerize-hsdk.py

diff --git a/board/synopsys/hsdk/config.mk b/board/synopsys/hsdk/config.mk new file mode 100644 index 0000000000..7a0ed3ca36 --- /dev/null +++ b/board/synopsys/hsdk/config.mk @@ -0,0 +1,11 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (C) 2018 Synopsys, Inc. All rights reserved. + +bsp-generate: u-boot u-boot.bin + $(Q)python3 $(srctree)/board/$(BOARDDIR)/headerize-hsdk.py \ + --arc-id 0x52 --image $(srctree)/u-boot.bin \ + --elf $(srctree)/u-boot + $(Q)mkimage -T script -C none -n 'uboot update script' \ + -d $(srctree)/u-boot-update.txt \ + $(srctree)/u-boot-update.img &> /dev/null diff --git a/board/synopsys/hsdk/headerize-hsdk.py b/board/synopsys/hsdk/headerize-hsdk.py new file mode 100644 index 0000000000..97510474c4 --- /dev/null +++ b/board/synopsys/hsdk/headerize-hsdk.py @@ -0,0 +1,147 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# Copyright (C) 2018 Synopsys, Inc. All rights reserved. +# Author: Eugeniy Paltsev Eugeniy.Paltsev@synopsys.com + +import os, getopt, sys, zlib +from elftools.elf.elffile import ELFFile + + +def usage(exit_code): + print("usage:") + print(sys.argv[0] + " --arc-id 0x52 --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): + # u-boot.head check_sum for preloader - 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, arc_id): + if arc_id not in [0x52, 0x53]: + print("unknown ARC ID: " + hex(arc_id)) + sys.exit(2) + + 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) + + +def main(): + try: + opts, args = getopt.getopt(sys.argv[1:], + "ha:i:l:e:", ["help", "arc-id=", "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" + + # initial header values + arc_id = 0x52 # 0x52 for first HSDK release + image_copy_adr = 0x81000000 # place where preloader will store u-boot binary + # initial constant header values, do not change these values + magic1 = 0xdeadbeafaf # big endian byte order + flash_address = 0x0 + flash_type = 0x0 # 0 - SPI flash, 1 - NOR flash + magic2 = [ # big endian byte order + 0x20202a2020202020202020202a20202020207c5c2e20202020202e2f7c20202020207c2d, + 0x2e5c2020202f2e2d7c20202020205c2020602d2d2d6020202f20202020202f205f202020, + 0x205f20205c20202020207c205f60712070205f207c2020202020272e5f3d2f205c3d5f2e, + 0x272020202020202020605c202f60202020202020202020202020206f2020202020202020] + + for opt, arg in opts: + if opt in ('-h', "--help"): usage(0) + if opt in ('-a', "--arc-id"): arc_id = 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, arc_id) + + 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) + + # 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')) + file.write(jump_address.to_bytes(4, byteorder='little')) + for i in range(12): file.write(0xFF.to_bytes(1, byteorder='little')) + for byte in magic2: file.write(byte.to_bytes(36, byteorder='big')) + for i in range(208 - len(magic2) * 36): + file.write(0xFF.to_bytes(1, byteorder='little')) + file.write(flash_address.to_bytes(4, byteorder='little')) + for i in range(11): file.write(0xFF.to_bytes(1, byteorder='little')) + file.write(flash_type.to_bytes(1, 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 headerized 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 + + # 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 && " + \ + crc_check_cmd + " && " + \ + "sf protect unlock 0x0 " + hex(errase_size) + " && " + \ + "sf erase 0x0 " + hex(errase_size) + " && " + \ + "sf write " + hex(load_addr) + " 0x0 " + hex(load_size) + " && " + \ + "sf protect lock 0x0 " + hex(errase_size) + + 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) diff --git a/include/configs/hsdk.h b/include/configs/hsdk.h index 3684f4d6d6..b561ae4e17 100644 --- a/include/configs/hsdk.h +++ b/include/configs/hsdk.h @@ -62,6 +62,12 @@ #define CONFIG_ENV_SIZE SZ_16K

#define CONFIG_EXTRA_ENV_SETTINGS \ + "upgrade=if mmc rescan && " \ + "fatload mmc 0:1 ${loadaddr} u-boot-update.img && " \ + "iminfo ${loadaddr} && source ${loadaddr}; then; else echo " \ + ""Fail to upgrade.\n" \ + "Do you have u-boot-update.img and u-boot.head on first (FAT) SD card partition?"" \ + "; fi\0" \ "core_dccm_0=0x10\0" \ "core_dccm_1=0x6\0" \ "core_dccm_2=0x10\0" \