Started working on internal checksum transfers

unicmd.py

@@ -32,6 +32,12 @@ def crc16_fdl(data: bytes): # used in FDL1/2 mode
     crc += (crc >> 16)
     return ~crc & 0xffff
 
+def chksum32(data: bytes): # used in flashing mode
+    cksum = 0
+    for c in data:
+        cksum = (cksum + c) & 0xffffffff
+    return cksum
+
 def hdlc_encode(data, fdl = False, nocrc = False):
     if nocrc:
         crc = 0
@@ -120,18 +126,14 @@ BSL_CMD_READ_MIDST = 0x11
 BSL_CMD_READ_END = 0x12
 
 BSL_CMD_KEEP_CHARGE = 0x13
-BSL_CMD_EXTTABLE = 0x14
 BSL_CMD_READ_FLASH_UID = 0x15
-BSL_CMD_READ_SOFTSIM_EID = 0x16
 BSL_CMD_POWER_OFF = 0x17
-BSL_CMD_CHECK_ROOT = 0x19
-BSL_CMD_READ_CHIP_UID = 0x1a
-BSL_CMD_ENABLE_WRITE_FLASH = 0x1b
-BSL_CMD_ENABLE_SECUREBOOT = 0x1c
-BSL_CMD_READ_RF_TRANSCEIVER_TYPE = 0x24
-BSL_CMD_CHECK_BAUD = FLAG_BYTE
+BSL_CMD_READ_CHIP_UID = 0x1A
+BSL_CMD_ENABLE_WRITE_FLASH = 0x1B
+BSL_CMD_ENABLE_SECUREBOOT = 0x1C
+BSL_CMD_EXEC_NAND_INIT = 0x21
 
-BSL_DDR_VERIFY = 0x26
+BSL_CMD_CHECK_BAUD = FLAG_BYTE
 
 BSL_CMD_END_PROCESS = 0x7F
 
@@ -218,7 +220,10 @@ def shape_data_packet(dtype, data, dlen = 0):
     packethdr = pack('>HH', dtype, dlen)
     return packethdr + data
 
-def cmd_data_start(targetAddr, targetLen):
+def cmd_data_start(targetAddr, targetLen, externalCrc = 0):
+    if externalCrc:
+        datahdr = pack('>LLL', targetAddr, targetLen, externalCrc)
+    else:
         datahdr = pack('>LL', targetAddr, targetLen)
     return shape_data_packet(BSL_CMD_START_DATA, datahdr)
 
@@ -251,9 +256,6 @@ def cmd_read_chip_type():
 def cmd_read_sector_size():
     return shape_cmd_packet(BSL_CMD_READ_SECTOR_SIZE)
 
-def cmd_read_flash_info():
-    return shape_cmd_packet(BSL_CMD_READ_FLASH_INFO)
-
 def cmd_read_flash(targetAddr, targetLen, offset):
     return pack('>HHLLL', BSL_CMD_READ_FLASH, 12, targetAddr, targetLen, offset)
 

uniflash.py

@@ -12,7 +12,7 @@ UNISOC_PID = 0x4d00
 UNISOC_FLASH_BASE_ADDR = 0x10000000
 MAX_PKT_SIZE = 1024
 bSize = 512 # read block size
-genTimeout = 40000
+genTimeout = 120000
 
 # all main procedures
 
@@ -64,21 +64,22 @@ def handshake(fdlBooted = False):
     if len(r):
         print('>', r.decode())
 
-def send_file_to_addr(fname, faddr, fdlBooted = False, flashMode = False, fbs = 1024, forceErase = False):
+def send_file_to_addr(fname, faddr, fdlBooted = False, flashMode = False, fbs = 1024):
     pSize = MAX_PKT_SIZE
+    print('Initializing data transfer...')
+    dataCrc = 0
+    if flashMode:
+        # faddr is our flash offset in this case, and we directly pass the data buffer to the function
+        pSize = fbs
+        fdata = fname
+        flen = len(fdata)
+    else:
         f = open(fname, 'rb')
         fdata = f.read()
         f.close()
         flen = len(fdata)
-    print('Initializing data transfer...')
-    if flashMode:
-        if forceErase:
-            erase_flash_mem(flen, UNISOC_FLASH_BASE_ADDR + faddr)
-        pSize = fbs
-        # faddr is our flash offset in this case
-        resp = reqresp(unicmd.cmd_data_start(UNISOC_FLASH_BASE_ADDR + faddr, flen), fdlBooted)
-    else:
-        resp = reqresp(unicmd.cmd_data_start(faddr, flen), fdlBooted)
+        dataCrc = unicmd.chksum32(fdata)
+    resp = reqresp(unicmd.cmd_data_start(faddr, flen, dataCrc), fdlBooted)
     rcode, rlen, r = unicmd.resp_decode(resp, fdlBooted)
     assert rcode == unicmd.BSL_REP_ACK, 'Could not start data transfer, response code is %X' % rcode
     print('Starting data transfer...')
@@ -93,7 +94,7 @@ def send_file_to_addr(fname, faddr, fdlBooted = False, flashMode = False, fbs =
     print('\nEnding data transfer...')
     resp = reqresp(unicmd.cmd_data_end(), fdlBooted)
     rcode, rlen, r = unicmd.resp_decode(resp, fdlBooted)
-    if not flashMode or rcode != unicmd.BSL_FLASH_CFG_ERROR: # on flashing, ignore 0xA4 error
+    if not flashMode or (rcode != unicmd.BSL_FLASH_CFG_ERROR and rcode != unicmd.BSL_WRITE_ERROR): # on flashing, ignore 0xA2 and 0xA4 errors
         assert rcode == unicmd.BSL_REP_ACK, 'Could not finalize data transfer, response code is %X' % rcode
     print('Data transfer successful')
 
@@ -128,7 +129,7 @@ def read_partition(partid, partsize, partoffset, outfile, rbblocksize):
     outf.flush()
     print('\nPartition dumped!')
 
-# memory eraser
+# memory eraser and writer
 
 def erase_flash_mem(size, faddr):
     print('Erasing %d bytes in the flash memory at offset 0x%X...' % (size, faddr - UNISOC_FLASH_BASE_ADDR))
@@ -137,6 +138,25 @@ def erase_flash_mem(size, faddr):
     assert rcode == unicmd.BSL_REP_ACK, 'Could not erase flash memory, response code is %X' % rcode
     print('Flash range erased!')
 
+def write_flash_mem(infile, offset, blocksize, forceErase):
+    startAddr = UNISOC_FLASH_BASE_ADDR + offset
+    f = open(infile, 'rb')
+    fdata = f.read()
+    f.close()
+    flen = len(fdata)
+    if forceErase:
+        erase_flash_mem(flen, startAddr)
+    send_file_to_addr(fdata, startAddr, True, True, blocksize)
+    '''
+    UNISOC_MAX_DL_CHUNK = 0x300000
+    curAddr = startAddr
+    while fdata:
+        fchunk = fdata[:UNISOC_MAX_DL_CHUNK]
+        send_file_to_addr(fchunk, curAddr, True, True, blocksize)
+        curAddr += len(fchunk)
+        fdata = fdata[UNISOC_MAX_DL_CHUNK:]
+    '''
+
 def auto_int(x):
     return int(x,0)
 
@@ -221,7 +241,7 @@ if __name__ == '__main__': # main app start
 
             if is_flash:
                 print('Writing flash at offset 0x%X from %s...' % (readoffset, outfile))
-                send_file_to_addr(outfile, readoffset, True, True, readbs, forceErase)
+                write_flash_mem(outfile, readoffset, readbs, forceErase)
                 print('Flash memory written, disconnect the device!')
             else:
                 read_partition(partitionId, readlen, readoffset, outfile, readbs)