FreeCalypso > hg > fc-magnetite
view helpers/srec4ram.c @ 632:d968a3216ba0
new tangomdm build target
TCS211/Magnetite built for target leonardo runs just fine on the Tango-based
Caramel board, but a more proper tangomdm build target is preferable in order
to better market these Tango modems to prospective commercial customers. The
only differences are in GPIO and MCSI config:
* MCSI is enabled in the tangomdm build config.
* GPIO 1 is loudspeaker amplifier control on Leonardo, but on Tango platforms
it can be used for anything. On Caramel boards this GPIO should be
configured as an output driving high.
* GPIO 2 needs to be configured as Calypso input on Leonardo, but on Tango
platforms it can be used for anything. On Caramel boards this GPIO should be
configured as an output, either high or low is OK.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 04 Jan 2020 19:27:41 +0000 |
parents | 40b08f6cb2b8 |
children |
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/* * This ad hoc utility is used as part of building RAM-loadable * firmware images for targets with large RAM. It reads the ramimage.m0 * S-record file produced by TI's hex470 post-linker and re-emits it * in another SREC form that is suitable for feeding to fc-xram. */ #include <sys/types.h> #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> char *infname; FILE *inf, *outf; char srecbuf[80]; u_char srecbin[40], srecout[40]; int lineno; decode_hex_byte(s) char *s; { register int u, l; if (!isxdigit(s[0]) || !isxdigit(s[1])) return(-1); if (isdigit(s[0])) u = s[0] - '0'; else if (isupper(s[0])) u = s[0] - 'A' + 10; else u = s[0] - 'a' + 10; if (isdigit(s[1])) l = s[1] - '0'; else if (isupper(s[1])) l = s[1] - 'A' + 10; else l = s[1] - 'a' + 10; return((u << 4) | l); } srec2bin() { register int i, l, b; l = decode_hex_byte(srecbuf + 2); if (l < 1) { fprintf(stderr, "%s line %d: S-record length octet is bad\n", infname, lineno); exit(1); } srecbin[0] = l; if (l > 35) { fprintf(stderr, "%s line %d: S-record is longer than expected\n", infname, lineno); exit(1); } for (i = 1; i <= l; i++) { b = decode_hex_byte(srecbuf + i*2 + 2); if (b < 0) { fprintf(stderr, "%s line %d: hex decode error\n", infname, lineno); exit(1); } srecbin[i] = b; } return(0); } srec_cksum() { u_char accum; register int i, len; len = srecbin[0] + 1; accum = 0; for (i = 0; i < len; i++) accum += srecbin[i]; if (accum != 0xFF) { fprintf(stderr, "%s line %d: bad checksum\n", infname, lineno); exit(1); } return(0); } emit_output_srec(type, buf) u_char *buf; { int i; u_char accum = 0; putc('S', outf); putc(type, outf); for (i = 0; i < buf[0]; i++) { fprintf(outf, "%02X", buf[i]); accum += buf[i]; } fprintf(outf, "%02X\n", ~accum & 0xFF); return 0; } transform_s3() { int datalen; u_char *sp, *dp; int i; if (srecbin[0] < 6) { fprintf(stderr, "%s line %d: S3 record is too short\n", infname, lineno); exit(1); } datalen = srecbin[0] - 5; if (datalen & 1) { fprintf(stderr, "%s line %d: odd data length\n", infname, lineno); exit(1); } sp = srecbin; dp = srecout; for (i = 0; i < 5; i++) *dp++ = *sp++; for (i = 0; i < datalen; i += 2) { dp[0] = sp[1]; dp[1] = sp[0]; sp += 2; dp += 2; } return 0; } generate_vectors_record() { u_char *dp; u_long addr; int i; srecout[0] = 28 + 5; srecout[1] = 0x00; srecout[2] = 0x80; srecout[3] = 0x00; srecout[4] = 0x00; dp = srecout + 5; for (i = 0; i < 7; i++) { addr = 0x01004000 + i * 4; *dp++ = addr; *dp++ = addr >> 8; *dp++ = addr >> 16; *dp++ = addr >> 24; } emit_output_srec('3', srecout); return 0; } generate_jump_record() { srecout[0] = 5; srecout[1] = 0x01; srecout[2] = 0x00; srecout[3] = 0x40; srecout[4] = 0x58; emit_output_srec('7', srecout); return 0; } main(argc, argv) char **argv; { if (argc < 2 || argc > 3) { fprintf(stderr, "usage: %s input.m0 [output.srec]\n", argv[0]); exit(1); } infname = argv[1]; inf = fopen(infname, "r"); if (!inf) { perror(infname); exit(1); } if (argc > 2) { outf = fopen(argv[2], "w"); if (!outf) { perror(argv[2]); exit(1); } } else outf = stdout; for (lineno = 1; ; lineno++) { if (!fgets(srecbuf, sizeof srecbuf, inf)) { fprintf(stderr, "%s: premature EOF\n", infname); exit(1); } if (srecbuf[0] != 'S') { fprintf(stderr, "%s line %d: not an S-record\n", infname, lineno); exit(1); } srec2bin(); srec_cksum(); switch (srecbuf[1]) { case '0': emit_output_srec('0', srecbin); continue; case '3': transform_s3(); emit_output_srec('3', srecout); continue; case '7': break; default: fprintf(stderr, "%s line %d: unexpected S%c record\n", infname, lineno, srecbuf[1]); exit(1); } break; } generate_vectors_record(); generate_jump_record(); exit(0); }