forked from M-Labs/artiq
flash_storage: refactor + unit tests + artiq_coreconfig.py CLI + doc
This commit is contained in:
Yann Sionneau
parent
36cda96df0
commit
4bf7875b87
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@ -21,6 +21,11 @@ class _H2DMsgType(Enum):
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RPC_REPLY = 6
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FLASH_READ_REQUEST = 7
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FLASH_WRITE_REQUEST = 8
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FLASH_ERASE_REQUEST = 9
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FLASH_REMOVE_REQUEST = 10
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class _D2HMsgType(Enum):
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LOG_REPLY = 1
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@ -37,6 +42,11 @@ class _D2HMsgType(Enum):
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RPC_REQUEST = 10
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FLASH_READ_REPLY = 11
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FLASH_WRITE_REPLY = 12
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FLASH_OK_REPLY = 13
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FLASH_ERROR_REPLY = 14
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class UnsupportedDevice(Exception):
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pass
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@ -122,6 +132,44 @@ class CommGeneric:
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self.write(bytes(kname, "ascii"))
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logger.debug("running kernel: %s", kname)
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def flash_storage_read(self, key):
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self._write_header(9+len(key), _H2DMsgType.FLASH_READ_REQUEST)
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self.write(key)
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length, ty = self._read_header()
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if ty != _D2HMsgType.FLASH_READ_REPLY:
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raise IOError("Incorrect reply from device: {}".format(ty))
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value = self.read(length - 9)
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return value
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def flash_storage_write(self, key, value):
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self._write_header(9+len(key)+1+len(value),
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_H2DMsgType.FLASH_WRITE_REQUEST)
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self.write(key)
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self.write(b"\x00")
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self.write(value)
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_, ty = self._read_header()
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if ty != _D2HMsgType.FLASH_WRITE_REPLY:
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if ty == _D2HMsgType.FLASH_ERROR_REPLY:
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raise IOError("Invalid key: not a null-terminated string")
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else:
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raise IOError("Incorrect reply from device: {}".format(ty))
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ret = self.read(1)
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if ret != b"\x01":
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raise IOError("Flash storage is full")
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def flash_storage_erase(self):
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self._write_header(9, _H2DMsgType.FLASH_ERASE_REQUEST)
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_, ty = self._read_header()
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if ty != _D2HMsgType.FLASH_OK_REPLY:
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raise IOError("Incorrect reply from device: {}".format(ty))
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def flash_storage_remove(self, key):
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self._write_header(9+len(key), _H2DMsgType.FLASH_REMOVE_REQUEST)
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self.write(key)
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_, ty = self._read_header()
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if ty != _D2HMsgType.FLASH_OK_REPLY:
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raise IOError("Incorrect reply from device: {}".format(ty))
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def _receive_rpc_value(self, type_tag):
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if type_tag == "n":
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return None
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@ -0,0 +1,61 @@
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#!/usr/bin/env python3
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import argparse
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from artiq.master.worker_db import create_device
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from artiq.protocols.file_db import FlatFileDB
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def to_bytes(string):
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return bytes(string, encoding="ascii")
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def get_argparser():
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parser = argparse.ArgumentParser(description="ARTIQ core device config "
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"remote access")
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parser.add_argument("-r", "--read", type=to_bytes,
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help="read key from core device config")
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parser.add_argument("-w", "--write", nargs=2, action="append", default=[],
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metavar=("KEY", "STRING"), type=to_bytes,
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help="write key-value records to core device config")
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parser.add_argument("-f", "--write-file", nargs=2, action="append",
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type=to_bytes, default=[], metavar=("KEY", "FILENAME"),
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help="write the content of a file into core device "
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"config")
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parser.add_argument("-e", "--erase", action="store_true",
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help="erase core device config")
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parser.add_argument("-d", "--delete", action="append", default=[],
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type=to_bytes,
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help="delete key from core device config")
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parser.add_argument("--ddb", default="ddb.pyon",
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help="device database file")
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return parser
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def main():
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args = get_argparser().parse_args()
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ddb = FlatFileDB(args.ddb)
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comm = create_device(ddb.request("comm"), None)
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if args.read:
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value = comm.flash_storage_read(args.read)
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if not value:
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print("Key {} does not exist".format(args.read))
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else:
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print(value)
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elif args.erase:
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comm.flash_storage_erase()
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elif args.delete:
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for key in args.delete:
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comm.flash_storage_remove(key)
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else:
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if args.write:
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for key, value in args.write:
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comm.flash_storage_write(key, value)
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if args.write_file:
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for key, filename in args.write_file:
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with open(filename, "rb") as fi:
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comm.flash_storage_write(key, fi.read())
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if __name__ == "__main__":
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main()
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@ -7,7 +7,7 @@ ARTIQ_PREFIX=$(python3 -c "import artiq; print(artiq.__path__[0])")
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# Default is kc705
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BOARD=kc705
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while getopts "bBrht:d:" opt
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while getopts "bBrht:d:f:" opt
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do
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case $opt in
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b)
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@ -19,6 +19,15 @@ do
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r)
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FLASH_RUNTIME=1
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;;
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f)
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if [ -f $OPTARG ]
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then
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FILENAME=$OPTARG
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else
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echo "You specified a non-existing file to flash: $OPTARG"
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exit 1
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fi
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;;
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t)
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if [ "$OPTARG" == "kc705" ]
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then
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@ -52,6 +61,7 @@ do
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echo "-r Flash ARTIQ runtime"
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echo "-h Show this help message"
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echo "-t Target (kc705, pipistrello, default is: kc705)"
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echo "-f Flash storage image generated with artiq_mkfs"
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echo "-d Directory containing the binaries to be flashed"
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exit 1
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;;
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@ -95,6 +105,7 @@ then
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PROXY=bscan_spi_kc705.bit
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BIOS_ADDR=0xaf0000
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RUNTIME_ADDR=0xb00000
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FS_ADDR=0xb40000
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if [ -z "$BIN_PREFIX" ]; then BIN_PREFIX=$ARTIQ_PREFIX/binaries/kc705; fi
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search_for_proxy $PROXY
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elif [ "$BOARD" == "pipistrello" ]
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@ -105,12 +116,13 @@ then
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PROXY=bscan_spi_lx45_csg324.bit
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BIOS_ADDR=0x170000
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RUNTIME_ADDR=0x180000
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FS_ADDR=0x1c0000
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if [ -z "$BIN_PREFIX" ]; then BIN_PREFIX=$ARTIQ_PREFIX/binaries/pipistrello; fi
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search_for_proxy $PROXY
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fi
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# Check if neither of -b|-B|-r have been used
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if [ -z "$FLASH_RUNTIME" -a -z "$FLASH_BIOS" -a -z "$FLASH_BITSTREAM" ]
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if [ -z "$FLASH_RUNTIME" -a -z "$FLASH_BIOS" -a -z "$FLASH_BITSTREAM" -a -z "$FILENAME" ]
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then
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FLASH_RUNTIME=1
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FLASH_BIOS=1
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@ -132,6 +144,12 @@ then
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fi
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set -e
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if [ ! -z "$FILENAME" ]
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then
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echo "Flashing file $FILENAME at address $FS_ADDR"
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xc3sprog -v -c $CABLE -I$PROXY_PATH/$PROXY $FILENAME:w:$FS_ADDR:BIN
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fi
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if [ "${FLASH_BITSTREAM}" == "1" ]
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then
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echo "Flashing FPGA bitstream..."
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@ -20,16 +20,13 @@ def get_argparser():
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def write_record(f, key, value):
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key_size = len(key) + 1
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value_size = len(value)
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record_size = key_size + value_size + 4
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f.write(struct.pack(">l", record_size))
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f.write(key.encode())
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f.write(b"\x00")
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key_size = len(key) + 1
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if key_size % 4:
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f.write(bytes(4 - (key_size % 4)))
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f.write(struct.pack(">l", len(value)))
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f.write(value)
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value_size = len(value)
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if value_size % 4:
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f.write(bytes(4 - (value_size % 4)))
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def write_end_marker(f):
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@ -65,7 +65,7 @@ class ResultDB:
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result_dict_to_hdf5(f, self.data.read)
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def _create_device(desc, dbh):
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def create_device(desc, dbh):
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ty = desc["type"]
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if ty == "local":
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module = importlib.import_module(desc["module"])
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@ -105,7 +105,7 @@ class DBHub:
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while isinstance(desc, str):
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# alias
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desc = self.ddb.request(desc)
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dev = _create_device(desc, self)
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dev = create_device(desc, self)
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self.active_devices[name] = dev
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return dev
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@ -0,0 +1,14 @@
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.. _core-device-flash-storage:
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Core device flash storage
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=========================
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The core device contains some flash space that can be used to store
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some configuration data.
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This storage area is used to store the core device MAC address, IP address and even the idle kernel.
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The flash storage area is one sector (64 kB) large and is organized as a list
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of key-value records.
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This flash storage space can be accessed by using the artiq_coreconfig.py :ref:`core-device-configuration-tool`.
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@ -15,6 +15,7 @@ Contents:
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core_drivers_reference
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protocols_reference
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ndsp_reference
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core_device_flash_storage
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utilities
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fpga_board_ports
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default_network_ports
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@ -124,6 +124,50 @@ These steps are required to generate bitstream (``.bit``) files, build the MiSoC
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The communication parameters are 115200 8-N-1.
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* Set the MAC and IP address in the :ref:`core device configuration flash storage <core-device-flash-storage>`:
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* You can either set it by generating a flash storage image and then flash it: ::
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$ ~/artiq-dev/artiq/frontend/artiq_mkfs.py flash_storage.img -s mac xx:xx:xx:xx:xx:xx -s ip xx.xx.xx.xx
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$ ~/artiq-dev/artiq/frontend/artiq_flash.sh -f flash_storage.img
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* Or you can set it via the runtime test mode command line
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* Boot the board.
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* Quickly run flterm (in ``path/to/misoc/tools``) to access the serial console.
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* If you weren't quick enough to see anything in the serial console, press the reset button.
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* Wait for "Press 't' to enter test mode..." to appear and hit the ``t`` key.
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* Enter the following commands (which will erase the flash storage content).
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::
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test> fserase
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test> fswrite ip xx.xx.xx.xx
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test> fswrite mac xx:xx:xx:xx:xx:xx
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* Then reboot.
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You should see something like this in the serial console: ::
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~/dev/misoc$ ./tools/flterm --port /dev/ttyUSB1
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[FLTERM] Starting...
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MiSoC BIOS http://m-labs.hk
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(c) Copyright 2007-2014 Sebastien Bourdeauducq
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[...]
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Press 't' to enter test mode...
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Entering test mode.
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test> fserase
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test> fswrite ip 192.168.10.2
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test> fswrite mac 11:22:33:44:55:66
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.. note:: The reset button of the KC705 board is the "CPU_RST" labeled button.
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.. warning:: Both those instructions will result in the flash storage being wiped out. However you can use the test mode to change the IP/MAC without erasing everything if you skip the "fserase" command.
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Installing the host-side software
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---------------------------------
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@ -92,3 +92,58 @@ This tool compiles key/value pairs into a binary image suitable for flashing int
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.. argparse::
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:ref: artiq.frontend.artiq_mkfs.get_argparser
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:prog: artiq_mkfs
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.. _core-device-configuration-tool:
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Core device configuration tool
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------------------------------
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The artiq_coreconfig tool allows to read, write and remove key-value records from the :ref:`core-device-flash-storage`.
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It also allows to erase the entire flash storage area.
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To use this tool, you need to specify a ``ddb.pyon`` DDB file which contains a ``comm`` device (an example is provided in ``artiq/examples/master/ddb.pyon``).
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This tells the tool how to connect to the core device (via serial or via TCP) and with which parameters (baudrate, serial device, IP address, TCP port).
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When not specified, the artiq_coreconfig tool will assume that there is a file named ``ddb.pyon`` in the current directory.
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To read the record whose key is ``mac``::
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$ artiq_coreconfig -r mac
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To write the value ``test_value`` in the key ``my_key``::
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$ artiq_coreconfig -w my_key test_value
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$ artiq_coreconfig -r my_key
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b'test_value'
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You can also write entire files in a record using the ``-f`` parameter::
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$ echo "this_is_a_test" > my_filename
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$ artiq_coreconfig -f my_key my_filename
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$ artiq_coreconfig -r my_key
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b'this_is_a_test\n'
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You can write several records at once::
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$ artiq_coreconfig -w key1 value1 -f key2 filename -w key3 value3
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To remove the previously written key ``my_key``::
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$ artiq_coreconfig -d my_key
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To erase the entire flash storage area::
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$ artiq_coreconfig -e
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You don't need to remove a record in order to change its value, just overwrite
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it::
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$ artiq_coreconfig -w my_key some_value
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$ artiq_coreconfig -w my_key some_other_value
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$ artiq_coreconfig -r my_key
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b'some_other_value'
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.. argparse::
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:ref: artiq.frontend.artiq_coreconfig.get_argparser
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:prog: artiq_coreconfig
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@ -3,6 +3,7 @@
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*/
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#include <string.h>
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#include <stdio.h>
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#include <system.h>
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#include <spiflash.h>
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#include <generated/mem.h>
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@ -19,133 +20,239 @@
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#define min(a, b) (a>b?b:a)
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#define max(a, b) (a>b?a:b)
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#define goto_next_record(buff, addr) do { \
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unsigned int key_size = strlen(&buff[addr])+1; \
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if(key_size % 4) \
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key_size += 4 - (key_size % 4); \
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unsigned int *buflen_p = (unsigned int *)&buff[addr + key_size]; \
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unsigned int buflen = *buflen_p; \
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if(buflen % 4) \
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buflen += 4 - (buflen % 4); \
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addr += key_size + sizeof(int) + buflen; \
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} while (0)
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union seek {
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unsigned int integer;
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char bytes[4];
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struct record {
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char *key;
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unsigned int key_len;
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char *value;
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unsigned int value_len;
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char *raw_record;
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unsigned int size;
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};
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static void write_at_offset(char *key, void *buffer, int buflen, unsigned int sector_offset);
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static char key_exists(char *buff, char *key, char *end);
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static char check_for_duplicates(char *buff);
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static unsigned int try_to_flush_duplicates(void);
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struct iter_state {
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char *buffer;
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unsigned int seek;
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unsigned int buf_len;
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};
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static char key_exists(char *buff, char *key, char *end)
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static unsigned int get_record_size(char *buff)
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{
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unsigned int addr;
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unsigned int record_size;
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addr = 0;
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while(&buff[addr] < end && *(unsigned int*)&buff[addr] != END_MARKER) {
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if(strcmp(&buff[addr], key) == 0)
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return 1;
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goto_next_record(buff, addr);
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memcpy(&record_size, buff, 4);
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return record_size;
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}
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static void record_iter_init(struct iter_state *is, char *buffer, unsigned int buf_len)
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{
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is->buffer = buffer;
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is->seek = 0;
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is->buf_len = buf_len;
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}
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static int record_iter_next(struct iter_state *is, struct record *record, int *fatal)
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{
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if(is->seek >= is->buf_len)
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return 0;
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record->raw_record = &is->buffer[is->seek];
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record->size = get_record_size(record->raw_record);
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if(record->size == END_MARKER)
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return 0;
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if(is->seek > is->buf_len - sizeof(record->size) - 2) { /* 2 is the minimum key length */
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printf("flash_storage might be corrupted: END_MARKER missing at the end of the storage sector\n");
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if(fatal)
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*fatal = 1;
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return 0;
|
||||
}
|
||||
|
||||
if(record->size > is->buf_len - is->seek) {
|
||||
printf("flash_storage might be corrupted: invalid record_size %d at address %08x\n", record->size, record->raw_record);
|
||||
if(fatal)
|
||||
*fatal = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
record->key = record->raw_record + sizeof(record->size);
|
||||
record->key_len = strnlen(record->key, record->size - sizeof(record->size)) + 1;
|
||||
|
||||
if(record->key_len == record->size - sizeof(record->size) + 1) {
|
||||
printf("flash_storage might be corrupted: invalid key length at address %08x\n", record->raw_record);
|
||||
if(fatal)
|
||||
*fatal = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
record->value = record->key + record->key_len;
|
||||
record->value_len = record->size - record->key_len - sizeof(record->size);
|
||||
|
||||
is->seek += record->size;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static unsigned int get_free_space(void)
|
||||
{
|
||||
struct iter_state is;
|
||||
struct record record;
|
||||
|
||||
record_iter_init(&is, STORAGE_ADDRESS, STORAGE_SIZE);
|
||||
while(record_iter_next(&is, &record, NULL));
|
||||
return STORAGE_SIZE - is.seek;
|
||||
}
|
||||
|
||||
static int is_empty(struct record *record)
|
||||
{
|
||||
return record->value_len == 0;
|
||||
}
|
||||
|
||||
static int key_exists(char *buff, char *key, char *end, char accept_empty, struct record *found_record)
|
||||
{
|
||||
struct iter_state is;
|
||||
struct record iter_record;
|
||||
int found = 0;
|
||||
|
||||
record_iter_init(&is, buff, end - buff);
|
||||
while(record_iter_next(&is, &iter_record, NULL)) {
|
||||
if(strcmp(iter_record.key, key) == 0) {
|
||||
found = 1;
|
||||
if(found_record)
|
||||
*found_record = iter_record;
|
||||
}
|
||||
}
|
||||
|
||||
if(found && is_empty(found_record) && !accept_empty)
|
||||
return 0;
|
||||
|
||||
if(found)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static char check_for_duplicates(char *buff)
|
||||
{
|
||||
unsigned int addr;
|
||||
char *key_name;
|
||||
struct record record, following_record;
|
||||
struct iter_state is;
|
||||
int no_error;
|
||||
|
||||
addr = 0;
|
||||
while(addr < STORAGE_SIZE && *(unsigned int *)&buff[addr] != END_MARKER) {
|
||||
key_name = &buff[addr];
|
||||
goto_next_record(buff, addr);
|
||||
if(key_exists(&buff[addr], key_name, &buff[STORAGE_SIZE]))
|
||||
record_iter_init(&is, buff, STORAGE_SIZE);
|
||||
no_error = record_iter_next(&is, &record, NULL);
|
||||
while(no_error) {
|
||||
no_error = record_iter_next(&is, &following_record, NULL);
|
||||
if(no_error && key_exists(following_record.raw_record, record.key, &buff[STORAGE_SIZE], 1, NULL))
|
||||
return 1;
|
||||
record = following_record;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static unsigned int try_to_flush_duplicates(void)
|
||||
static char check_for_empty_records(char *buff)
|
||||
{
|
||||
unsigned int addr, i, key_size, buflen;
|
||||
char *key_name, *last_duplicate;
|
||||
struct iter_state is;
|
||||
struct record record;
|
||||
|
||||
record_iter_init(&is, buff, STORAGE_SIZE);
|
||||
while(record_iter_next(&is, &record, NULL))
|
||||
if(is_empty(&record))
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static unsigned int try_to_flush_duplicates(char *new_key, unsigned int buf_len)
|
||||
{
|
||||
unsigned int key_size, new_record_size, ret = 0, can_rollback = 0;
|
||||
struct record record, previous_record;
|
||||
char sector_buff[STORAGE_SIZE];
|
||||
union seek *seeker = (union seek *)sector_buff;
|
||||
struct iter_state is;
|
||||
|
||||
memcpy(sector_buff, STORAGE_ADDRESS, STORAGE_SIZE);
|
||||
if(check_for_duplicates(sector_buff)) {
|
||||
if(check_for_duplicates(sector_buff)
|
||||
|| key_exists(sector_buff, new_key, §or_buff[STORAGE_SIZE], 0, NULL)
|
||||
|| check_for_empty_records(sector_buff)) {
|
||||
fs_erase();
|
||||
for(addr = 0; addr < STORAGE_SIZE && seeker[addr >> 2].integer != END_MARKER;) {
|
||||
key_name = §or_buff[addr];
|
||||
key_size = strlen(key_name)+1;
|
||||
if(key_size % 4)
|
||||
key_size += 4 - (key_size % 4);
|
||||
if(!key_exists((char *)STORAGE_ADDRESS, key_name, STORAGE_ADDRESS+STORAGE_SIZE)) {
|
||||
last_duplicate = key_name;
|
||||
for(i = addr; i < STORAGE_SIZE;) {
|
||||
goto_next_record(sector_buff, i);
|
||||
if(strcmp(§or_buff[i], key_name) == 0)
|
||||
last_duplicate = §or_buff[i];
|
||||
}
|
||||
buflen = *(unsigned int *)&last_duplicate[key_size];
|
||||
fs_write(key_name, &last_duplicate[key_size+sizeof(int)], buflen);
|
||||
}
|
||||
goto_next_record(sector_buff, addr);
|
||||
}
|
||||
return 0;
|
||||
record_iter_init(&is, sector_buff, STORAGE_SIZE);
|
||||
while(record_iter_next(&is, &record, NULL)) {
|
||||
if(is_empty(&record))
|
||||
continue;
|
||||
if(!key_exists((char *)STORAGE_ADDRESS, record.key, STORAGE_ADDRESS + STORAGE_SIZE, 1, NULL)) {
|
||||
struct record rec;
|
||||
|
||||
if(!key_exists(sector_buff, record.key, §or_buff[STORAGE_SIZE], 0, &rec))
|
||||
continue;
|
||||
if(strcmp(new_key, record.key) == 0) { // If we are about to write this key we don't keep the old value.
|
||||
previous_record = rec; // This holds the old record in case we need it back (for instance if new record is too long)
|
||||
can_rollback = 1;
|
||||
} else
|
||||
return 1;
|
||||
fs_write(record.key, rec.value, rec.value_len);
|
||||
}
|
||||
}
|
||||
ret = 1;
|
||||
}
|
||||
|
||||
key_size = strlen(new_key) + 1;
|
||||
new_record_size = key_size + buf_len + sizeof(new_record_size);
|
||||
if(can_rollback && new_record_size > get_free_space()) {
|
||||
fs_write(new_key, previous_record.value, previous_record.value_len);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void write_at_offset(char *key, void *buffer, int buflen, unsigned int sector_offset)
|
||||
static void write_at_offset(char *key, void *buffer, int buf_len, unsigned int sector_offset)
|
||||
{
|
||||
int key_len = strlen(key) + 1;
|
||||
int key_len_alignment = 0, buflen_alignment = 0;
|
||||
unsigned char padding[3] = {0, 0, 0};
|
||||
unsigned int record_size = key_len + buf_len + sizeof(record_size);
|
||||
unsigned int flash_addr = (unsigned int)STORAGE_ADDRESS + sector_offset;
|
||||
|
||||
if(key_len % 4)
|
||||
key_len_alignment = 4 - (key_len % 4);
|
||||
|
||||
if(buflen % 4)
|
||||
buflen_alignment = 4 - (buflen % 4);
|
||||
|
||||
write_to_flash(sector_offset, (unsigned char *)key, key_len);
|
||||
write_to_flash(sector_offset+key_len, padding, key_len_alignment);
|
||||
write_to_flash(sector_offset+key_len+key_len_alignment, (unsigned char *)&buflen, sizeof(buflen));
|
||||
write_to_flash(sector_offset+key_len+key_len_alignment+sizeof(buflen), buffer, buflen);
|
||||
write_to_flash(sector_offset+key_len+key_len_alignment+sizeof(buflen)+buflen, padding, buflen_alignment);
|
||||
write_to_flash(flash_addr, (unsigned char *)&record_size, sizeof(record_size));
|
||||
write_to_flash(flash_addr+sizeof(record_size), (unsigned char *)key, key_len);
|
||||
write_to_flash(flash_addr+sizeof(record_size)+key_len, buffer, buf_len);
|
||||
flush_cpu_dcache();
|
||||
}
|
||||
|
||||
|
||||
void fs_write(char *key, void *buffer, unsigned int buflen)
|
||||
int fs_write(char *key, void *buffer, unsigned int buf_len)
|
||||
{
|
||||
char *addr;
|
||||
unsigned int key_size = strlen(key)+1;
|
||||
unsigned int record_size = key_size + sizeof(int) + buflen;
|
||||
struct record record;
|
||||
unsigned int key_size = strlen(key) + 1;
|
||||
unsigned int new_record_size = key_size + sizeof(int) + buf_len;
|
||||
int no_error, fatal = 0;
|
||||
struct iter_state is;
|
||||
|
||||
for(addr = STORAGE_ADDRESS; addr < STORAGE_ADDRESS + STORAGE_SIZE - record_size; addr += 4) {
|
||||
if(*(unsigned int *)addr == END_MARKER) {
|
||||
write_at_offset(key, buffer, buflen, (unsigned int)addr);
|
||||
break;
|
||||
}
|
||||
}
|
||||
if(addr >= STORAGE_ADDRESS + STORAGE_SIZE - record_size) { // Flash is full? Try to flush duplicates.
|
||||
if(try_to_flush_duplicates())
|
||||
return; // No duplicates found, cannot write the new key-value record: sector is full.
|
||||
record_iter_init(&is, STORAGE_ADDRESS, STORAGE_SIZE);
|
||||
while((no_error = record_iter_next(&is, &record, &fatal)));
|
||||
|
||||
if(fatal)
|
||||
goto fatal_error;
|
||||
|
||||
if(STORAGE_SIZE - is.seek >= new_record_size) {
|
||||
write_at_offset(key, buffer, buf_len, is.seek);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if(!try_to_flush_duplicates(key, buf_len)) // storage is full, let's try to free some space up.
|
||||
return 0; // No duplicates found, cannot write the new key-value record: sector is full.
|
||||
// Now retrying to write, hoping enough flash was freed.
|
||||
for(addr = STORAGE_ADDRESS; addr < STORAGE_ADDRESS + STORAGE_SIZE - record_size; addr += 4) {
|
||||
if(*(unsigned int *)addr == END_MARKER) {
|
||||
write_at_offset(key, buffer, buflen, (unsigned int)addr);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
record_iter_init(&is, STORAGE_ADDRESS, STORAGE_SIZE);
|
||||
while((no_error = record_iter_next(&is, &record, &fatal)));
|
||||
|
||||
if(fatal)
|
||||
goto fatal_error;
|
||||
|
||||
if(STORAGE_SIZE - is.seek >= new_record_size) {
|
||||
write_at_offset(key, buffer, buf_len, is.seek);
|
||||
return 1; // We eventually succeeded in writing the record
|
||||
} else
|
||||
return 0; // Storage is definitely full.
|
||||
|
||||
fatal_error:
|
||||
printf("fatal error: flash storage might be corrupted\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
void fs_erase(void)
|
||||
|
|
@ -154,33 +261,35 @@ void fs_erase(void)
|
|||
flush_cpu_dcache();
|
||||
}
|
||||
|
||||
unsigned int fs_read(char *key, void *buffer, unsigned int buflen, unsigned int *remain)
|
||||
unsigned int fs_read(char *key, void *buffer, unsigned int buf_len, unsigned int *remain)
|
||||
{
|
||||
unsigned int read_length = 0;
|
||||
char *addr;
|
||||
struct iter_state is;
|
||||
struct record record;
|
||||
int fatal = 0;
|
||||
|
||||
addr = STORAGE_ADDRESS;
|
||||
while(addr < (STORAGE_ADDRESS + STORAGE_SIZE) && (*addr != END_MARKER)) {
|
||||
unsigned int key_len, value_len;
|
||||
char *key_addr = addr;
|
||||
|
||||
key_len = strlen(addr) + 1;
|
||||
if(key_len % 4)
|
||||
key_len += 4 - (key_len % 4);
|
||||
addr += key_len;
|
||||
value_len = *(unsigned int *)addr;
|
||||
addr += sizeof(value_len);
|
||||
if(strcmp(key_addr, key) == 0) {
|
||||
memcpy(buffer, addr, min(value_len, buflen));
|
||||
read_length = min(value_len, buflen);
|
||||
if(remain)
|
||||
*remain = max(0, (int)value_len - (int)buflen);
|
||||
*remain = 0;
|
||||
|
||||
record_iter_init(&is, STORAGE_ADDRESS, STORAGE_SIZE);
|
||||
while(record_iter_next(&is, &record, &fatal)) {
|
||||
if(strcmp(record.key, key) == 0) {
|
||||
memcpy(buffer, record.value, min(record.value_len, buf_len));
|
||||
read_length = min(record.value_len, buf_len);
|
||||
if(remain)
|
||||
*remain = max(0, (int)(record.value_len) - (int)buf_len);
|
||||
}
|
||||
addr += value_len;
|
||||
if((int)addr % 4)
|
||||
addr += 4 - ((int)addr % 4);
|
||||
}
|
||||
|
||||
if(fatal)
|
||||
printf("fatal error: flash storage might be corrupted\n");
|
||||
|
||||
return read_length;
|
||||
}
|
||||
|
||||
void fs_remove(char *key)
|
||||
{
|
||||
fs_write(key, NULL, 0);
|
||||
}
|
||||
|
||||
#endif /* CSR_SPIFLASH_BASE && SPIFLASH_PAGE_SIZE */
|
||||
|
|
|
|||
|
|
@ -5,8 +5,9 @@
|
|||
#ifndef __FLASH_STORAGE_H
|
||||
#define __FLASH_STORAGE_H
|
||||
|
||||
void fs_remove(char *key);
|
||||
void fs_erase(void);
|
||||
void fs_write(char *key, void *buffer, unsigned int buflen);
|
||||
int fs_write(char *key, void *buffer, unsigned int buflen);
|
||||
unsigned int fs_read(char *key, void *buffer, unsigned int buflen, unsigned int *remain);
|
||||
|
||||
#endif /* __FLASH_STORAGE_H */
|
||||
|
|
|
|||
|
|
@ -12,6 +12,7 @@
|
|||
#include "kloader.h"
|
||||
#include "exceptions.h"
|
||||
#include "session.h"
|
||||
#include "flash_storage.h"
|
||||
|
||||
#define BUFFER_IN_SIZE (1024*1024)
|
||||
#define BUFFER_OUT_SIZE (1024*1024)
|
||||
|
|
@ -86,7 +87,12 @@ enum {
|
|||
REMOTEMSG_TYPE_LOAD_OBJECT,
|
||||
REMOTEMSG_TYPE_RUN_KERNEL,
|
||||
|
||||
REMOTEMSG_TYPE_RPC_REPLY
|
||||
REMOTEMSG_TYPE_RPC_REPLY,
|
||||
|
||||
REMOTEMSG_TYPE_FLASH_READ_REQUEST,
|
||||
REMOTEMSG_TYPE_FLASH_WRITE_REQUEST,
|
||||
REMOTEMSG_TYPE_FLASH_ERASE_REQUEST,
|
||||
REMOTEMSG_TYPE_FLASH_REMOVE_REQUEST
|
||||
};
|
||||
|
||||
/* device to host */
|
||||
|
|
@ -104,8 +110,24 @@ enum {
|
|||
REMOTEMSG_TYPE_KERNEL_EXCEPTION,
|
||||
|
||||
REMOTEMSG_TYPE_RPC_REQUEST,
|
||||
|
||||
REMOTEMSG_TYPE_FLASH_READ_REPLY,
|
||||
REMOTEMSG_TYPE_FLASH_WRITE_REPLY,
|
||||
REMOTEMSG_TYPE_FLASH_OK_REPLY,
|
||||
REMOTEMSG_TYPE_FLASH_ERROR_REPLY
|
||||
};
|
||||
|
||||
static int check_flash_storage_key_len(char *key, unsigned int key_len)
|
||||
{
|
||||
if(key_len == get_in_packet_len() - 8) {
|
||||
log("Invalid key: not a null-terminated string");
|
||||
buffer_out[8] = REMOTEMSG_TYPE_FLASH_ERROR_REPLY;
|
||||
submit_output(9);
|
||||
return 0;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int process_input(void)
|
||||
{
|
||||
switch(buffer_in[8]) {
|
||||
|
|
@ -204,6 +226,63 @@ static int process_input(void)
|
|||
user_kernel_state = USER_KERNEL_RUNNING;
|
||||
break;
|
||||
}
|
||||
case REMOTEMSG_TYPE_FLASH_READ_REQUEST: {
|
||||
#if SPIFLASH_SECTOR_SIZE - 4 > BUFFER_OUT_SIZE - 9
|
||||
#error Output buffer cannot hold the flash storage data
|
||||
#elif SPIFLASH_SECTOR_SIZE - 4 > BUFFER_IN_SIZE - 9
|
||||
#error Input buffer cannot hold the flash storage data
|
||||
#endif
|
||||
unsigned int ret, in_packet_len;
|
||||
char *key;
|
||||
|
||||
in_packet_len = get_in_packet_len();
|
||||
key = &buffer_in[9];
|
||||
buffer_in[in_packet_len] = '\0';
|
||||
|
||||
buffer_out[8] = REMOTEMSG_TYPE_FLASH_READ_REPLY;
|
||||
ret = fs_read(key, &buffer_out[9], sizeof(buffer_out) - 9, NULL);
|
||||
submit_output(9 + ret);
|
||||
break;
|
||||
}
|
||||
case REMOTEMSG_TYPE_FLASH_WRITE_REQUEST: {
|
||||
char *key, *value;
|
||||
unsigned int key_len, value_len, in_packet_len;
|
||||
int ret;
|
||||
|
||||
in_packet_len = get_in_packet_len();
|
||||
key = &buffer_in[9];
|
||||
key_len = strnlen(key, in_packet_len - 9) + 1;
|
||||
if(!check_flash_storage_key_len(key, key_len))
|
||||
break;
|
||||
|
||||
value_len = in_packet_len - key_len - 9;
|
||||
value = key + key_len;
|
||||
ret = fs_write(key, value, value_len);
|
||||
|
||||
buffer_out[8] = REMOTEMSG_TYPE_FLASH_WRITE_REPLY;
|
||||
buffer_out[9] = ret;
|
||||
submit_output(10);
|
||||
break;
|
||||
}
|
||||
case REMOTEMSG_TYPE_FLASH_ERASE_REQUEST: {
|
||||
fs_erase();
|
||||
buffer_out[8] = REMOTEMSG_TYPE_FLASH_OK_REPLY;
|
||||
submit_output(9);
|
||||
break;
|
||||
}
|
||||
case REMOTEMSG_TYPE_FLASH_REMOVE_REQUEST: {
|
||||
char *key;
|
||||
unsigned int in_packet_len;
|
||||
|
||||
in_packet_len = get_in_packet_len();
|
||||
key = &buffer_in[9];
|
||||
buffer_in[in_packet_len] = '\0';
|
||||
|
||||
fs_remove(key);
|
||||
buffer_out[8] = REMOTEMSG_TYPE_FLASH_OK_REPLY;
|
||||
submit_output(9);
|
||||
break;
|
||||
}
|
||||
default:
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -259,13 +259,201 @@ static void ddstest(char *n)
|
|||
#if (defined CSR_SPIFLASH_BASE && defined SPIFLASH_PAGE_SIZE)
|
||||
static void fsread(char *key)
|
||||
{
|
||||
char buf[256];
|
||||
char readbuf[SPIFLASH_SECTOR_SIZE];
|
||||
int r;
|
||||
|
||||
r = fs_read(key, buf, sizeof(buf)-1, NULL);
|
||||
buf[r] = 0;
|
||||
puts(buf);
|
||||
r = fs_read(key, readbuf, sizeof(readbuf)-1, NULL);
|
||||
readbuf[r] = 0;
|
||||
if(r == 0)
|
||||
printf("key %s does not exist\n", key);
|
||||
else
|
||||
puts(readbuf);
|
||||
}
|
||||
|
||||
static void fswrite(char *key, void *buffer, unsigned int length)
|
||||
{
|
||||
if(!fs_write(key, buffer, length))
|
||||
printf("cannot write key %s because flash storage is full\n", key);
|
||||
}
|
||||
|
||||
static void fsfull(void)
|
||||
{
|
||||
int i;
|
||||
char value[4096];
|
||||
memset(value, '@', sizeof(value));
|
||||
|
||||
for(i = 0; i < SPIFLASH_SECTOR_SIZE/sizeof(value); i++)
|
||||
fs_write("plip", value, sizeof(value));
|
||||
}
|
||||
|
||||
static void check_read(char *key, char *expected, unsigned int length, unsigned int testnum)
|
||||
{
|
||||
char readbuf[SPIFLASH_SECTOR_SIZE];
|
||||
unsigned int remain, readlength;
|
||||
|
||||
memset(readbuf, '\0', sizeof(readbuf));
|
||||
|
||||
readlength = fs_read(key, readbuf, sizeof(readbuf), &remain);
|
||||
if(remain > 0)
|
||||
printf("KO[%u] remain == %u, expected 0\n", testnum, remain);
|
||||
if(readlength != length)
|
||||
printf("KO[%u] read length == %u, expected %u\n", testnum, readlength, length);
|
||||
if(remain == 0 && readlength == length)
|
||||
printf(".");
|
||||
|
||||
readbuf[readlength] = 0;
|
||||
if(memcmp(expected, readbuf, readlength) == 0)
|
||||
printf(".\n");
|
||||
else
|
||||
printf("KO[%u] read %s instead of %s\n", testnum, readbuf, expected);
|
||||
}
|
||||
|
||||
static void check_doesnt_exist(char *key, unsigned int testnum)
|
||||
{
|
||||
char readbuf;
|
||||
unsigned int remain, readlength;
|
||||
|
||||
readlength = fs_read(key, &readbuf, sizeof(readbuf), &remain);
|
||||
if(remain > 0)
|
||||
printf("KO[%u] remain == %u, expected 0\n", testnum, remain);
|
||||
if(readlength > 0)
|
||||
printf("KO[%u] readlength == %d, expected 0\n", testnum, readlength);
|
||||
if(remain == 0 && readlength == 0)
|
||||
printf(".\n");
|
||||
}
|
||||
|
||||
static void check_write(unsigned int ret)
|
||||
{
|
||||
if(!ret)
|
||||
printf("KO");
|
||||
else
|
||||
printf(".");
|
||||
}
|
||||
|
||||
static inline void test_sector_is_full(void)
|
||||
{
|
||||
char c;
|
||||
char value[4096];
|
||||
char key[2] = {0, 0};
|
||||
|
||||
fs_erase();
|
||||
memset(value, '@', sizeof(value));
|
||||
for(c = 1; c <= SPIFLASH_SECTOR_SIZE/sizeof(value); c++) {
|
||||
key[0] = c;
|
||||
check_write(fs_write(key, value, sizeof(value) - 6));
|
||||
}
|
||||
check_write(!fs_write("this_should_fail", "fail", 5));
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
static void test_one_big_record(int testnum)
|
||||
{
|
||||
char value[SPIFLASH_SECTOR_SIZE];
|
||||
memset(value, '@', sizeof(value));
|
||||
|
||||
fs_erase();
|
||||
check_write(fs_write("a", value, sizeof(value) - 6));
|
||||
check_read("a", value, sizeof(value) - 6, testnum);
|
||||
check_write(fs_write("a", value, sizeof(value) - 6));
|
||||
check_read("a", value, sizeof(value) - 6, testnum);
|
||||
check_write(!fs_write("b", value, sizeof(value) - 6));
|
||||
check_read("a", value, sizeof(value) - 6, testnum);
|
||||
fs_remove("a");
|
||||
check_doesnt_exist("a", testnum);
|
||||
check_write(fs_write("a", value, sizeof(value) - 6));
|
||||
check_read("a", value, sizeof(value) - 6, testnum);
|
||||
fs_remove("a");
|
||||
check_doesnt_exist("a", testnum);
|
||||
value[0] = '!';
|
||||
check_write(fs_write("b", value, sizeof(value) - 6));
|
||||
check_read("b", value, sizeof(value) - 6, testnum);
|
||||
}
|
||||
|
||||
static void test_flush_duplicate_rollback(int testnum)
|
||||
{
|
||||
char value[SPIFLASH_SECTOR_SIZE];
|
||||
memset(value, '@', sizeof(value));
|
||||
|
||||
fs_erase();
|
||||
/* This makes the flash storage full with one big record */
|
||||
check_write(fs_write("a", value, SPIFLASH_SECTOR_SIZE - 6));
|
||||
/* This should trigger the try_to_flush_duplicate code which
|
||||
* at first will not keep the old "a" record value because we are
|
||||
* overwriting it. But then it should roll back to the old value
|
||||
* because the new record is too large.
|
||||
*/
|
||||
value[0] = '!';
|
||||
check_write(!fs_write("a", value, sizeof(value)));
|
||||
/* check we still have the old record value */
|
||||
value[0] = '@';
|
||||
check_read("a", value, SPIFLASH_SECTOR_SIZE - 6, testnum);
|
||||
}
|
||||
|
||||
static void test_too_big_fails(int testnum)
|
||||
{
|
||||
char value[SPIFLASH_SECTOR_SIZE];
|
||||
memset(value, '@', sizeof(value));
|
||||
|
||||
fs_erase();
|
||||
check_write(!fs_write("a", value, sizeof(value) - 6 + /* TOO BIG */ 1));
|
||||
check_doesnt_exist("a", testnum);
|
||||
}
|
||||
|
||||
static void fs_test(void)
|
||||
{
|
||||
int i;
|
||||
char writebuf[] = "abcdefghijklmnopqrst";
|
||||
char read_check[4096];
|
||||
int vect_length = sizeof(writebuf);
|
||||
|
||||
memset(read_check, '@', sizeof(read_check));
|
||||
printf("testing...\n");
|
||||
for(i = 0; i < vect_length; i++) {
|
||||
printf("%u.0:", i);
|
||||
fs_erase();
|
||||
check_write(fs_write("a", writebuf, i));
|
||||
check_read("a", writebuf, i, i);
|
||||
|
||||
printf("%u.1:", i);
|
||||
fsfull();
|
||||
check_read("a", writebuf, i, i);
|
||||
|
||||
printf("%u.2:", i);
|
||||
check_read("plip", read_check, sizeof(read_check), i);
|
||||
|
||||
printf("%u.3:", i);
|
||||
check_write(fs_write("a", "b", 2));
|
||||
check_read("a", "b", 2, i);
|
||||
|
||||
printf("%u.4:", i);
|
||||
fsfull();
|
||||
check_read("a", "b", 2, i);
|
||||
|
||||
printf("%u.5:", i);
|
||||
check_doesnt_exist("notfound", i);
|
||||
|
||||
printf("%u.6:", i);
|
||||
fs_remove("a");
|
||||
check_doesnt_exist("a", i);
|
||||
|
||||
printf("%u.7:", i);
|
||||
fsfull();
|
||||
check_doesnt_exist("a", i);
|
||||
}
|
||||
|
||||
printf("%u:", vect_length);
|
||||
test_sector_is_full();
|
||||
|
||||
printf("%u:", vect_length+1);
|
||||
test_one_big_record(vect_length+1);
|
||||
|
||||
printf("%u:", vect_length+2);
|
||||
test_flush_duplicate_rollback(vect_length+2);
|
||||
|
||||
printf("%u:", vect_length+3);
|
||||
test_too_big_fails(vect_length+3);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
static void help(void)
|
||||
|
|
@ -288,6 +476,8 @@ static void help(void)
|
|||
puts("fserase - erase flash storage");
|
||||
puts("fswrite <k> <v> - write to flash storage");
|
||||
puts("fsread <k> - read flash storage");
|
||||
puts("fsremove <k> - remove a key-value record from flash storage");
|
||||
puts("fstest - run flash storage tests. WARNING: erases the storage area");
|
||||
#endif
|
||||
}
|
||||
|
||||
|
|
@ -340,6 +530,7 @@ static char *get_token(char **str)
|
|||
return d;
|
||||
}
|
||||
|
||||
|
||||
static void do_command(char *c)
|
||||
{
|
||||
char *token;
|
||||
|
|
@ -365,8 +556,10 @@ static void do_command(char *c)
|
|||
|
||||
#if (defined CSR_SPIFLASH_BASE && defined SPIFLASH_PAGE_SIZE)
|
||||
else if(strcmp(token, "fserase") == 0) fs_erase();
|
||||
else if(strcmp(token, "fswrite") == 0) fs_write(get_token(&c), c, strlen(c));
|
||||
else if(strcmp(token, "fswrite") == 0) fswrite(get_token(&c), c, strlen(c));
|
||||
else if(strcmp(token, "fsread") == 0) fsread(get_token(&c));
|
||||
else if(strcmp(token, "fsremove") == 0) fs_remove(get_token(&c));
|
||||
else if(strcmp(token, "fstest") == 0) fs_test();
|
||||
#endif
|
||||
|
||||
else if(strcmp(token, "") != 0)
|
||||
|
|
|
|||
Loading…
Reference in New Issue