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import os
import sys
compress_flag = 0
def create_flash_default_data(length):
datas = bytearray(length)
for i in range(length):
datas[i] = 0xff
return datas
def gen_flash_bin():
bootload_file = "./pre_build_bin/spl_bl808_d0.bin"
dtb_file = "./pre_build_bin/hw.dtb.5M" # 64k
opensbi_file = "./pre_build_bin/opensbi_v0.6.bin" # 64k
kernel_file = "./Image.bin"
kernel_out_img_file = "./whole_img_d0.bin"
bootload_file_size = os.stat(bootload_file).st_size
dtb_file_size = os.stat(dtb_file).st_size
linux_opensbi_file_size = os.stat(opensbi_file).st_size
kernel_file_size = os.stat(kernel_file).st_size
whole_img_data = create_flash_default_data(0x10000 + 0x10000 + 0x10000 + kernel_file_size)
# bootload
print("bootload size:", bootload_file_size)
fp = open(bootload_file, 'rb')
data00 = fp.read() + bytearray(0)
fp.close()
whole_img_data[0x0:0x0+len(data00)] = data00 # 0x0~0x10000 64k
# dtb
print("dtb size:", dtb_file_size)
fp = open(dtb_file, 'rb')
data0 = fp.read() + bytearray(0)
fp.close()
whole_img_data[0x10000:0x10000+len(data0)] = data0 # 0x0~0x10000 64k
# opensbi
print("opensbi size:",linux_opensbi_file_size)
fp = open(opensbi_file, 'rb')
data1 = fp.read() + bytearray(0)
fp.close()
whole_img_data[0x20000:0x20000+len(data1)] = data1 # 0x10000~0x20000 64k
# linux kernel
print("kernel img size:",kernel_file_size)
b0 = (kernel_file_size & 0xff000000) >> 24
b1 = (kernel_file_size & 0xff0000) >> 16
b2 = (kernel_file_size & 0xff00) >> 8
b3 = kernel_file_size & 0xff
# print(b0)
# print(b1)
# print(b2)
# print(b3)
header2 = [0x00,0x00,0x00,compress_flag,b3,b2,b1,b0]
whole_img_data[0x2fff8:0x30000] = bytearray((header2)) # image header
fp = open(kernel_file, 'rb')
data2 = fp.read() + bytearray(0)
fp.close()
whole_img_data[0x30000:0x30000+len(data2)] = data2 # 4M
fp = open(kernel_out_img_file, 'wb+')
fp.write(whole_img_data)
fp.close()
if __name__ == '__main__':
if(len(sys.argv) < 2):
compress_flag = 0
os.system('cp -rf rtthread_d0.bin Image.bin')
else:
if int(sys.argv[1]) == 1:
print("compress mode...")
compress_flag = 1
os.system('lz4 -9 -f rtthread_d0.bin Image.bin')
else:
compress_flag = 0
os.system('cp -rf rtthread_d0.bin Image.bin')
print("merge bin start...")
gen_flash_bin()
print("merge done!")
os.system('rm -rf Image.bin')
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