FreeCalypso > hg > freecalypso-tools
view target-utils/loadagent/bindump.c @ 820:03457a66d860
buzplayer: add basic support for PWT
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 30 May 2021 03:39:58 +0000 |
parents | 963d15a808eb |
children |
line wrap: on
line source
/* * Here we are going to implement a new memory dump command for use by * fc-loadtool, sending the dump stream to the host in binary instead of hex * S-records. * * We could send the entire stream continuously without any structure or * breaks, but if we did that, fc-loadtool would not be able to detect a slip * (byte loss error) in the serial stream until the end of the dump, * potentially minutes long. For this reason we are taking a different * approach: we are going to send the dump stream in blocks of 8192 bytes, * with each block preceded by an 8-byte binary header. Loadtool will know * and expect the same block structure, and seeing our block headers in the * right positions in the stream will provide assurance of synchronization. */ #include <sys/types.h> #include "types.h" void cmd_memdump_binary(argbulk) char *argbulk; { char *argv[3]; u_long start, length; u_long addr, remlen; unsigned blklen, n; if (parse_args(argbulk, 2, 2, argv, 0) < 0) return; if (parse_hexarg(argv[0], 8, &start) < 0) { printf("ERROR: arg1 must be a valid 32-bit hex address\n"); return; } if (parse_hexarg(argv[1], 8, &length) < 0) { printf("ERROR: arg2 must be a valid 32-bit hex value (length)\n"); return; } addr = start; for (remlen = length; remlen; remlen -= blklen) { blklen = 8192; if (remlen < blklen) blklen = remlen; serial_out(0x55); serial_out(0xAA); serial_out(addr >> 24); serial_out(addr >> 16); serial_out(addr >> 8); serial_out(addr); serial_out(blklen >> 8); serial_out(blklen); for (n = blklen; n; n--) { serial_out(*(volatile u8 *)addr); addr++; } } }