mirror of https://github.com/ARMmbed/mbed-os.git
158 lines
6.1 KiB
Python
158 lines
6.1 KiB
Python
"""
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@copyright (c) 2012 ON Semiconductor. All rights reserved.
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ON Semiconductor is supplying this software for use with ON Semiconductor
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processor based microcontrollers only.
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THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
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OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
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ON SEMICONDUCTOR SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL,
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INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
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"""
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from __future__ import absolute_import
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from __future__ import print_function
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import itertools
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import binascii
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import intelhex
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FIB_BASE = 0x2000
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FLASH_BASE = 0x3000
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FW_REV = 0x01000100
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def ranges(i):
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for _, b in itertools.groupby(enumerate(i), lambda x_y: x_y[1] - x_y[0]):
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b = list(b)
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yield b[0][1], b[-1][1]
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def add_fib_at_start(arginput):
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input_file = arginput + ".bin"
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file_name_hex = arginput + "_fib.hex"
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file_name_bin = arginput + ".bin"
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# Read in hex file
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input_hex_file = intelhex.IntelHex()
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input_hex_file.padding = 0x00
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input_hex_file.loadbin(input_file, offset=FLASH_BASE)
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output_hex_file = intelhex.IntelHex()
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output_hex_file.padding = 0x00
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# Get the starting and ending address
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addresses = input_hex_file.addresses()
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addresses.sort()
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start_end_pairs = list(ranges(addresses))
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regions = len(start_end_pairs)
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if regions == 1:
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start, end = start_end_pairs[0]
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else:
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start = min(min(start_end_pairs))
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end = max(max(start_end_pairs))
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assert start >= FLASH_BASE, ("Error - start 0x%x less than begining of user\
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flash area" %start)
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# Compute checksum over the range (don't include data at location of crc)
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size = end - start + 1
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data = input_hex_file.tobinarray(start=start, size=size)
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crc32 = binascii.crc32(data) & 0xFFFFFFFF
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fw_rev = FW_REV
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checksum = (start + size + crc32 + fw_rev) & 0xFFFFFFFF
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print("Writing FIB: base 0x%08X, size 0x%08X, crc32 0x%08X, fw rev 0x%08X,\
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checksum 0x%08X" % (start, size, crc32, fw_rev, checksum))
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#expected initial values used by daplink to validate that it is a valid bin
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#file added as dummy values in this file because the fib area preceeds the
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#application area the bootloader will ignore these dummy values
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# 00 is stack pointer (RAM address)
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# 04 is Reset vector (FLASH address)
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# 08 NMI_Handler (FLASH address)
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# 0C HardFault_Handler(FLASH address)
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# 10 dummy
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dummy_sp = 0x3FFFFC00
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dummy_reset_vector = 0x00003625
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dummy_nmi_handler = 0x00003761
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dummy_hardfault_handler = 0x00003691
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dummy_blank = 0x00000000
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#expected fib structure
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#typedef struct fib{
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#uint32_t base; /**< Base offset of firmware, indicating what flash the
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# firmware is in. (will never be 0x11111111) */
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#uint32_t size; /**< Size of the firmware */
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#uint32_t crc; /**< CRC32 for firmware correctness check */
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#uint32_t rev; /**< Revision number */
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#uint32_t checksum; /**< Check-sum of information block */
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#}fib_t, *fib_pt;
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fib_start = FIB_BASE
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dummy_fib_size = 20
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fib_size = 20
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user_code_start = FLASH_BASE
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# Write FIB to the file in little endian
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output_hex_file[fib_start + 0] = (dummy_sp >> 0) & 0xFF
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output_hex_file[fib_start + 1] = (dummy_sp >> 8) & 0xFF
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output_hex_file[fib_start + 2] = (dummy_sp >> 16) & 0xFF
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output_hex_file[fib_start + 3] = (dummy_sp >> 24) & 0xFF
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output_hex_file[fib_start + 4] = (dummy_reset_vector >> 0) & 0xFF
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output_hex_file[fib_start + 5] = (dummy_reset_vector >> 8) & 0xFF
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output_hex_file[fib_start + 6] = (dummy_reset_vector >> 16) & 0xFF
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output_hex_file[fib_start + 7] = (dummy_reset_vector >> 24) & 0xFF
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output_hex_file[fib_start + 8] = (dummy_nmi_handler >> 0) & 0xFF
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output_hex_file[fib_start + 9] = (dummy_nmi_handler >> 8) & 0xFF
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output_hex_file[fib_start + 10] = (dummy_nmi_handler >> 16) & 0xFF
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output_hex_file[fib_start + 11] = (dummy_nmi_handler >> 24) & 0xFF
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output_hex_file[fib_start + 12] = (dummy_hardfault_handler >> 0) & 0xFF
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output_hex_file[fib_start + 13] = (dummy_hardfault_handler >> 8) & 0xFF
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output_hex_file[fib_start + 14] = (dummy_hardfault_handler >> 16) & 0xFF
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output_hex_file[fib_start + 15] = (dummy_hardfault_handler >> 24) & 0xFF
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output_hex_file[fib_start + 16] = (dummy_blank >> 0) & 0xFF
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output_hex_file[fib_start + 17] = (dummy_blank >> 8) & 0xFF
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output_hex_file[fib_start + 18] = (dummy_blank >> 16) & 0xFF
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output_hex_file[fib_start + 19] = (dummy_blank >> 24) & 0xFF
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# Write FIB to the file in little endian
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output_hex_file[fib_start + 20] = (start >> 0) & 0xFF
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output_hex_file[fib_start + 21] = (start >> 8) & 0xFF
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output_hex_file[fib_start + 22] = (start >> 16) & 0xFF
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output_hex_file[fib_start + 23] = (start >> 24) & 0xFF
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output_hex_file[fib_start + 24] = (size >> 0) & 0xFF
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output_hex_file[fib_start + 25] = (size >> 8) & 0xFF
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output_hex_file[fib_start + 26] = (size >> 16) & 0xFF
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output_hex_file[fib_start + 27] = (size >> 24) & 0xFF
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output_hex_file[fib_start + 28] = (crc32 >> 0) & 0xFF
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output_hex_file[fib_start + 29] = (crc32 >> 8) & 0xFF
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output_hex_file[fib_start + 30] = (crc32 >> 16) & 0xFF
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output_hex_file[fib_start + 31] = (crc32 >> 24) & 0xFF
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output_hex_file[fib_start + 32] = (fw_rev >> 0) & 0xFF
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output_hex_file[fib_start + 33] = (fw_rev >> 8) & 0xFF
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output_hex_file[fib_start + 34] = (fw_rev >> 16) & 0xFF
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output_hex_file[fib_start + 35] = (fw_rev >> 24) & 0xFF
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output_hex_file[fib_start + 36] = (checksum >> 0) & 0xFF
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output_hex_file[fib_start + 37] = (checksum >> 8) & 0xFF
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output_hex_file[fib_start + 38] = (checksum >> 16) & 0xFF
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output_hex_file[fib_start + 39] = (checksum >> 24) & 0xFF
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#pad the rest of the file
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for i in range(fib_start + dummy_fib_size + fib_size, user_code_start):
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output_hex_file[i] = 0xFF
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#merge two hex files
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output_hex_file.merge(input_hex_file, overlap='error')
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# Write out file(s)
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output_hex_file.tofile(file_name_hex, 'hex')
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output_hex_file.tofile(file_name_bin, 'bin')
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