Diff: tools/targets/REALTEK_RTL8195AM.py

Revision:

0:b74591d5ab33

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/targets/REALTEK_RTL8195AM.py	Mon Dec 11 17:54:04 2017 +0000
@@ -0,0 +1,285 @@
+"""
+Realtek Semiconductor Corp.
+
+RTL8195A elf2bin script
+"""
+
+import sys, array, struct, os, re, subprocess
+import hashlib
+import shutil
+import time
+import binascii
+
+from tools.paths import TOOLS_BOOTLOADERS
+from tools.toolchains import TOOLCHAIN_PATHS
+
+# Constant Variables
+TAG = 0x81950001
+VER = 0x81950001
+CAMPAIGN = binascii.hexlify('FFFFFFFFFFFFFFFF')
+
+RAM2_HEADER = {
+    'tag': 0,
+    'ver': 0,
+    'timestamp': 0,
+    'size': 72,
+    'hash': 'FF',
+    'campaign': 'FF',
+    'crc32': 0xFFFFFFFF,
+}
+
+def format_number(number, width):
+    # convert to string
+    line = format(number, '0%dx' % (width))
+    if len(line) > width:
+        print "[ERROR] 0x%s cannot fit in width %d" % (line, width)
+        sys.exit(-1)
+    # cut string to list & reverse
+    line = [line[i:i+2] for i in range(0, len(line), 2)]
+    line.reverse()
+    return binascii.a2b_hex("".join(line))
+
+def format_string(string):
+    return binascii.a2b_hex(string)
+
+def write_number(value, width, output):
+    output.write(format_number(value, width))
+
+def write_string(value, width, output):
+    output.write(format_string(value))
+
+def append_image_file(image, output):
+    input = open(image, "rb")
+    output.write(input.read())
+    input.close()
+
+def write_padding_bytes(output_name, size):
+    current_size = os.stat(output_name).st_size
+    padcount = size - current_size
+    if padcount < 0:
+        print "[ERROR] image is larger than expected size"
+        sys.exit(-1)
+    output = open(output_name, "ab")
+    output.write('\377' * padcount)
+    output.close()
+
+def crc32_checksum(string):
+    return binascii.crc32(string) & 0xFFFFFFFF
+
+def sha256_checksum(filename, block_size=65536):
+    sha256 = hashlib.sha256()
+    with open(filename, 'rb') as f:
+        for block in iter(lambda: f.read(block_size), b''):
+            sha256.update(block)
+    return sha256.hexdigest()
+
+def epoch_timestamp():
+    epoch = int(time.time())
+    return epoch
+
+def find_symbol(toolchain, mapfile, symbol):
+    ret = None
+
+    HEX = '0x0{,8}(?P<addr>[0-9A-Fa-f]{8})'
+    if toolchain == "GCC_ARM":
+        SYM = re.compile(r'^\s+' + HEX + r'\s+' + symbol + '\r?$')
+    elif toolchain in ["ARM_STD", "ARM", "ARM_MICRO"]:
+        SYM = re.compile(r'^\s+' + HEX + r'\s+0x[0-9A-Fa-f]{8}\s+Code.*\s+i\.' + symbol + r'\s+.*$')
+    elif toolchain == "IAR":
+        SYM = re.compile(r'^' + symbol + r'\s+' + HEX + '\s+.*$')
+
+    with open(mapfile, 'r') as infile:
+        for line in infile:
+            match = re.match(SYM, line)
+            if match:
+                ret = match.group("addr")
+
+    if not ret:
+        print "[ERROR] cannot find the address of symbol " + symbol
+        return 0
+
+    return int(ret,16) | 1
+
+def parse_load_segment_gcc(image_elf):
+    # Program Headers:
+    #   Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
+    #   LOAD           0x000034 0x10006000 0x10006000 0x026bc 0x026bc RW  0x8
+    #   LOAD           0x0026f0 0x30000000 0x30000000 0x06338 0x06338 RWE 0x4
+    segment_list = []
+    cmd = os.path.join(TOOLCHAIN_PATHS['GCC_ARM'], 'arm-none-eabi-readelf')
+    cmd = '"' + cmd + '"' + ' -l ' + image_elf
+    for line in subprocess.check_output(cmd, shell=True, universal_newlines=True).split("\n"):
+        if not line.startswith("  LOAD"):
+            continue
+        segment = line.split()
+        if len(segment) != 8:
+            continue
+        offset = int(segment[1][2:], 16)
+        addr   = int(segment[2][2:], 16)
+        size   = int(segment[4][2:], 16)
+        if addr != 0 and size != 0:
+            segment_list.append((offset, addr, size))
+    return segment_list
+
+def parse_load_segment_armcc(image_elf):
+    # ====================================
+    #
+    # ** Program header #2
+    #
+    #     Type          : PT_LOAD (1)
+    #     File Offset   : 52 (0x34)
+    #     Virtual Addr  : 0x30000000
+    #     Physical Addr : 0x30000000
+    #     Size in file  : 27260 bytes (0x6a7c)
+    #     Size in memory: 42168 bytes (0xa4b8)
+    #     Flags         : PF_X + PF_W + PF_R + PF_ARM_ENTRY (0x80000007)
+    #     Alignment     : 8
+    #
+    (offset, addr, size) = (0, 0, 0)
+    segment_list = []
+    in_segment = False
+    cmd = os.path.join(TOOLCHAIN_PATHS['ARM'], 'bin', 'fromelf')
+    cmd = '"' + cmd + '"' + ' --text -v --only=none ' + image_elf
+    for line in subprocess.check_output(cmd, shell=True, universal_newlines=True).split("\n"):
+        if line == "":
+            pass
+        elif line.startswith("** Program header"):
+            in_segment = True
+        elif in_segment == False:
+            pass
+        elif line.startswith("============"):
+            if addr != 0 and size != 0:
+                segment_list.append((offset, addr, size))
+            in_segment = False
+            (offset, addr, size) = (0, 0, 0)
+        elif line.startswith("    Type"):
+            if not re.match(r'\s+Type\s+:\s+PT_LOAD\s.*$', line):
+                in_segment = False
+        elif line.startswith("    File Offset"):
+            match = re.match(r'^\s+File Offset\s+:\s+(?P<offset>\d+).*$', line)
+            if match:
+                offset = int(match.group("offset"))
+        elif line.startswith("    Virtual Addr"):
+            match = re.match(r'^\s+Virtual Addr\s+:\s+0x(?P<addr>[0-9a-f]+).*$', line)
+            if match:
+                addr = int(match.group("addr"), 16)
+        elif line.startswith("    Size in file"):
+            match = re.match(r'^\s+Size in file\s+:.*\(0x(?P<size>[0-9a-f]+)\).*$', line)
+            if match:
+                size = int(match.group("size"), 16)
+    return segment_list
+
+
+def parse_load_segment_iar(image_elf):
+    #   SEGMENTS:
+    #
+    #      Type Offset    Virtual   Physical File Sz Mem Sz Flags   Align
+    #      ---- ------    -------   -------- ------- ------ -----   -----
+    #   0: load   0x34 0x10006000 0x10006000  0x26bc 0x26bc 0x6  WR   0x8
+    #   1: load 0x26f0 0x30000000 0x30000000  0x6338 0x6338 0x7 XWR   0x4
+    #
+    #   SECTIONS:
+    #
+    #       Name            Type     Addr         Offset    Size Aln Lnk Inf  ESz Flags
+    #       ----            ----     ----         ------    ---- --- --- ---  --- -----
+    #    1: .shstrtab       strtab               0xfc4d8    0x60 0x4
+    #    2: .strtab         strtab               0xfc538  0xbb3f 0x4
+
+    segment_list = []
+    in_segment = False
+    cmd = os.path.join(TOOLCHAIN_PATHS['IAR'], 'bin', 'ielfdumparm')
+    cmd = '"' + cmd + '"' + ' ' + image_elf
+    for line in subprocess.check_output(cmd, shell=True, universal_newlines=True).split("\n"):
+        if line.startswith("  SEGMENTS:"):
+            in_segment = True
+        elif in_segment == False:
+            pass
+        elif line.startswith("  SECTIONS:"):
+            break
+        elif re.match(r'^\s+\w+:\s+load\s+.*$', line):
+            segment = line.split()
+            offset = int(segment[2][2:], 16)
+            addr   = int(segment[3][2:], 16)
+            size   = int(segment[5][2:], 16)
+            if addr != 0 and size != 0:
+                segment_list.append((offset, addr, size))
+    return segment_list
+
+def parse_load_segment(toolchain, image_elf):
+    if toolchain == "GCC_ARM":
+        return parse_load_segment_gcc(image_elf)
+    elif toolchain in ["ARM_STD", "ARM", "ARM_MICRO"]:
+        return parse_load_segment_armcc(image_elf)
+    elif toolchain == "IAR":
+        return parse_load_segment_iar(image_elf)
+    else:
+        return []
+
+def create_payload(image_elf, ram2_bin, entry, segment):
+    file_elf = open(image_elf, "rb")
+    file_bin = open(ram2_bin, "wb")
+
+    write_number(int(entry), 8, file_bin)
+    write_number(int(len(segment)), 8, file_bin)
+    write_number(0xFFFFFFFF, 8, file_bin)
+    write_number(0xFFFFFFFF, 8, file_bin)
+
+    for (offset, addr, size) in segment:
+        file_elf.seek(offset)
+        # write image header - size & addr
+        write_number(addr, 8, file_bin)
+        write_number(size, 8, file_bin)
+        # write load segment
+        file_bin.write(file_elf.read(size))
+        delta = size % 4
+        if delta != 0:
+            padding = 4 - delta
+            write_number(0x0, padding * 2, file_bin)
+    file_bin.close()
+    file_elf.close()
+
+def create_daplink(image_bin, ram1_bin, ram2_bin):
+
+    # remove target binary file/path
+    if os.path.isfile(image_bin):
+        os.remove(image_bin)
+    else:
+        shutil.rmtree(image_bin)
+
+    RAM2_HEADER['tag'] = format_number(TAG, 8)
+    RAM2_HEADER['ver'] = format_number(VER, 8)
+    RAM2_HEADER['timestamp'] = format_number(epoch_timestamp(), 16)
+    RAM2_HEADER['size'] = format_number(os.stat(ram2_bin).st_size + 72, 8)
+    RAM2_HEADER['hash'] = format_string(sha256_checksum(ram2_bin))
+    RAM2_HEADER['campaign'] = format_string(CAMPAIGN)
+
+    output = open(image_bin, "wb")
+    append_image_file(ram1_bin, output)
+
+    line = ""
+    for key in ['tag', 'ver', 'timestamp', 'size', 'hash', 'campaign']:
+        line += RAM2_HEADER[key]
+        output.write(RAM2_HEADER[key])
+
+    RAM2_HEADER['crc32'] = format_number(crc32_checksum(line), 8)
+
+    output.write(RAM2_HEADER['crc32'])
+    append_image_file(ram2_bin, output)
+    output.close()
+
+# ----------------------------
+#       main function
+# ----------------------------
+def rtl8195a_elf2bin(t_self, image_elf, image_bin):
+
+    image_name = os.path.splitext(image_elf)[0]
+    image_map = image_name + '.map'
+
+    ram1_bin = os.path.join(TOOLS_BOOTLOADERS, "REALTEK_RTL8195AM", "ram_1.bin")
+    ram2_bin = image_name + '-payload.bin'
+
+    entry = find_symbol(t_self.name, image_map, "PLAT_Start")
+    segment = parse_load_segment(t_self.name, image_elf)
+
+    create_payload(image_elf, ram2_bin, entry, segment)
+    create_daplink(image_bin, ram1_bin, ram2_bin)