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OSIP_STARTING_LBA = "2048"
OSIP_DESTINATION_POINTER = "17825792"
OSIP_HANDOFF_POINTER = "17829888"
# env is U-Boot primary environment where internal U-Boot variables are stored
# this default generated binary environment, is embedded in a raw OSIP image
# use by XFSTK tools to do the initial boot
ENV_IMAGE = "${S}/env.bin"
BASE_IMAGE = "${S}/u-boot.bin"
UBOOT_OSIP_SUFFIX = "img"
UBOOT_TMP_IMG = "${S}/u-boot.${UBOOT_OSIP_SUFFIX}.no-osip"
UBOOT_IMG = "${S}/u-boot.${UBOOT_OSIP_SUFFIX}"
UBOOT_OSIP_IMAGE = "u-boot-${MACHINE}-${PV}-${PR}.${UBOOT_OSIP_SUFFIX}"
UBOOT_OSIP_BINARY = "u-boot.${UBOOT_OSIP_SUFFIX}"
UBOOT_OSIP_SYMLINK = "u-boot-${MACHINE}.${UBOOT_OSIP_SUFFIX}"
do_uboot_padding() {
# U-Boot.bin map
# 0x000000 - 0x001000 | padding with 0
# 0x001000 - 0x200000 | u-boot0
dd if=/dev/zero of=u-boot.padding bs=4096 count=1
cat u-boot.padding ${BASE_IMAGE} | dd of=u-boot.bin.padded
# Align u-boot.bin to 4K for dfu
filesize=$(stat -c %s u-boot.bin.padded)
alignment=$(echo "4096 - (${filesize} % 4096)" | bc)
if [ ${alignment} -ne 0 ];
then
dd if=/dev/zero of=u-boot.bin.padded bs=1 count=${alignment} conv=notrunc seek=${filesize}
fi
cp u-boot.bin.padded ${BASE_IMAGE}
}
do_uboot_uboot_env_mkimage() {
# U-Boot.img map
# 0x000000 - 0x001000 | padding with 0
# 0x001000 - 0x200000 | u-boot0
# 0x200000 - 0x300000 | primary environment
# 0x300000 - 0x500000 | reserved
# 0x500000 - 0x600000 | secondary environment
# U-Boot.img on eMMC in LBA (LBA size: 512 bytes)
# | description | OSII | GPT label
# 0x000000 - 0x000001 | MBR + OSIP | - | -
# 0x000001 - 0x000022 | GPT | - | -
# 0x000022 - 0x000800 | padding with 0 (alignment) | - | -
# 0x000800 - 0x001800 | u-boot0 | 1 | u-boot0
# 0x001800 - 0x002600 | primary environment | - | u-boot-env0
# 0x002600 - 0x003600 | u-boot1 | 2 | u-boot1
# 0x003600 - 0x004400 | secondary environment | - | u-boot-env1
# Fill U-Boot.img with 0
dd if=/dev/zero of=${UBOOT_TMP_IMG} bs=6M count=1
# copy u-boot.bin in u-boot.img (u-boot0)
dd if=${BASE_IMAGE} of=${UBOOT_TMP_IMG} bs=1M conv=notrunc
# copy (offset 2M) u-boot_env0.bin in u-boot.img (u-boot0)
dd if=${ENV_IMAGE} of=${UBOOT_TMP_IMG} bs=1M conv=notrunc seek=2
# copy (offset 5M) u-boot_env1.bin in u-boot.img (u-boot0)
dd if=${ENV_IMAGE} of=${UBOOT_TMP_IMG} bs=1M conv=notrunc seek=5
}
python do_osip_mkimage() {
#
# Stitch an image to create an OSIP image (OS Image Profile).
# This script currently supports only one OSII (OS Image Identifier)
# If more is necessary, it will need to be adjusted.
#
# This is the C struct for one OSII (size = 24 bytes)
# struct OSII { //os image identifier
# uint16_t os_rev_minor;
# uint16_t os_rev_major;
# uint32_t logical_start_block; //units defined by get_block_size() if
# //reading/writing to/from nand, units of
# //512 bytes if cracking a stitched image
# uint32_t ddr_load_address;
# uint32_t entry_point;
# uint32_t size_of_os_image; //units defined by get_page_size() if
# //reading/writing to/from nand, units of
# //512 bytes if cracking a stitched image
# uint8_t attribute;
# uint8_t reserved[3];
# };
# This is what a full OSIP header contains
# Its size is 512 bytes
# Offset Size (bytes) Description
# 0x000 4 OSIP Signature "$OS$"
# 0x004 1 Reserved
# 0x005 1 Header minor revision
# 0x006 1 Header major revision
# 0x007 1 Header checksum
# 0x008 1 Number of pointers
# 0x009 1 Number of images
# 0x00a 2 Header size
# 0x00c 20 Reserved
# 0x020 24 1st bootable image descriptor (OSII)
# 0x038 24 2nd bootable image descriptor (OSII)
# ... ... ...
# 0x170 24 15th bootable image descriptor (OSII)
# 0x188 48 Not used
# 0x1B8 4 Disk signature
# 0x1BC 2 Null (0x0000)
# 0x1BE 16 1st primary partition descriptor
# 0x1CE 16 2nd primary partition descriptor
# 0x1DE 16 3rd primary partition descriptor
# 0x1EE 16 4th primary partition descriptor
# 0x1FE 1 0x55
# 0x1FF 1 0xaa
import os
import sys
import argparse
import struct
# As only a small portion of the OSIP header needs to be changed
# we simply store a full binary copy and we'll change just the
# necessary values in it
OSIP_HEADER_HEX_DATA = \
'244f532400000121010138000000000000000000000000000000000000' \
'00000000000000220000000000100100101001380100000f000000ffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff' \
'ffffffffff00000000000000000000ee0000000100000000e0a3030000' \
'0000000000000000000000000000000000000000000000000000000000' \
'000000000000000000000000000000000055aa'
def main():
input_file = "${UBOOT_TMP_IMG}"
output_file = "${UBOOT_IMG}"
handoff_pointer = ${OSIP_HANDOFF_POINTER}
destination_pointer = ${OSIP_DESTINATION_POINTER}
starting_lba = ${OSIP_STARTING_LBA}
in_file_data = open(input_file, 'rb').read()
out_file = open(output_file, 'wb')
# Write OSIP header data
osip_header_data = bytearray(OSIP_HEADER_HEX_DATA.decode('hex'))
# Override some values
# Overrides starting LBA of imge in eMMC
starting_lba_packed = struct.pack("I", starting_lba)
osip_header_data[0x24:0x27+1]=starting_lba_packed
# Overrides destination pointer to image in DDR
destination_pointer_packed = struct.pack("I", destination_pointer)
osip_header_data[0x28:0x2B+1]=destination_pointer_packed
# Overrides pointer to handoff entry point in image
handoff_pointer_packed = struct.pack("I", handoff_pointer)
osip_header_data[0x2C:0x2F+1]=handoff_pointer_packed
# The file needs to be padded to be multiple of 512 bytes
# Overrides passed image size (in unit of 512 bytes blocks)
padding_len_packed_block = struct.pack("I", ( (6*1024*1024) / 512))
osip_header_data[0x30:0x33+1]=padding_len_packed_block
# Compute XOR checksum
osip_header_size = 1*0x18+0x20 # 24 bytes per OSII + 32 bytes header
osip_header_data[0x07]=0
crc = osip_header_data[0]
for i in range(1, osip_header_size):
crc ^= osip_header_data[i]
osip_header_data[0x07]=crc
out_file.write(osip_header_data)
# Write image content
out_file.write(in_file_data)
out_file.close()
return 0
main()
}
do_deploy_append() {
install -d ${DEPLOYDIR}
install ${UBOOT_IMG} ${DEPLOYDIR}/${UBOOT_OSIP_IMAGE}
cd ${DEPLOYDIR}
rm -f ${UBOOT_IMG} ${UBOOT_OSIP_SYMLINK}
ln -sf ${UBOOT_OSIP_IMAGE} ${UBOOT_OSIP_SYMLINK}
ln -sf ${UBOOT_OSIP_IMAGE} ${UBOOT_OSIP_BINARY}
}
addtask uboot_padding before do_environment_mkimage before do_deploy after do_compile
addtask uboot_uboot_env_mkimage before do_osip_mkimage after do_environment_mkimage
addtask osip_mkimage before do_deploy after do_uboot_uboot_env_mkimage
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