FreeCalypso > hg > fc-tourmaline
view helpers/mokosrec2bin.c @ 223:740a8e8fc9d7
startup sync logic rework for the new PWON button boot scheme
Previously we added logic to the MMI task to hold off PEI init until
R2D is running, and then extended that condition to wait for FCHG
init too. However, the dependencies of MMI upon R2D and FCHG don't
start until mmiInit(), and that call is driven by Switch_ON() code,
hence the wait for R2D and FCHG init can be made in that code path
instead of the MMI task. Furthermore, with our new way of signaling
PWON button boot to MMI, we need a new wait to ensure that the MMI
task is up - previously this assurance was provided by the wait for
Kp pointers to be set.
Solution: revert our previous PEI init hold-off additions to MMI,
add a new flag indicating MMI task init done, and put the combined
wait for all needed conditions into our new PWON button boot code
in power.c.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Tue, 27 Apr 2021 06:24:52 +0000 |
parents | 1fb47f5b597a |
children |
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/* * GSM device firmwares that are built with TI's TMS470 toolchain in TI's * canonical way come out in TI's *.m0 format produced by TI's hex470 tool. * TI's *.m0 is a variant of the classic S-record format from Motorola, * but the specific variant depends on the -memwidth and -romwidth options * with which the hex470 tool is run. * * In TI's canonical architecture (as opposed to Mot/Compal's heavily modified * version) this hex470 tool is run with -memwidth 16 -romwidth 16 options, * and the *.m0 file comes out in the format variant which we have nicknamed * "moko-style" after its most famous user. This variant is a byte-reversed * S-record format in that each 16-bit word is byte-reversed relative to the * native byte order of the ARM7 processor. (This strange byte order actually * makes some sense if one views the image as a long array of 16-bit hex * values; 16 bits is the width of the flash memory on Calypso GSM devices and * thus the natural unit size for flash programming.) * * The present mokosrec2bin utility converts these "moko-style" S-record files * to straight binary, a conversion that includes flipping the order of bytes. */ #include <sys/types.h> #include <stdio.h> #include <ctype.h> #include <string.h> #include <strings.h> #include <stdlib.h> char *infname; FILE *inf, *outf; u_char fillbyte; char srecbuf[80]; u_char srecbin[40]; int lineno, state; u_long lastaddr; u_char header[6] = {0x06, 0x00, 0x00, 'H', 'D', 'R'}; 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); } main(argc, argv) char **argv; { register int i; u_long curaddr; int datalen; if (argc < 3 || argc > 4) { usage: fprintf(stderr, "usage: %s input.m0 output.bin [fill-byte]\n", argv[0]); exit(1); } infname = argv[1]; inf = fopen(infname, "r"); if (!inf) { perror(infname); exit(1); } if (argc > 3) { i = decode_hex_byte(argv[3]); if (i >= 0) fillbyte = i; else goto usage; } else fillbyte = 0xFF; state = 0; 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); } switch (srecbuf[1]) { case '0': if (state == 0) break; else goto badtype; case '3': if (state == 0) goto badtype; else break; case '7': if (state == 2) break; else goto badtype; default: badtype: fprintf(stderr, "%s line %d: S-record type unexpected\n", infname, lineno); exit(1); } srec2bin(); srec_cksum(); if (state == 0) { if (bcmp(srecbin, header, 6)) { fprintf(stderr, "%s: expected header missing\n", infname); exit(1); } state = 1; continue; } switch (srecbuf[1]) { case '3': if (srecbin[0] < 6) { fprintf(stderr, "%s line %d: S3 record is too short\n", infname, lineno); exit(1); } curaddr = (srecbin[1] << 24) | (srecbin[2] << 16) | (srecbin[3] << 8) | srecbin[4]; if (curaddr & 1) { fprintf(stderr, "%s line %d: odd address\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); } if (state < 2) { outf = fopen(argv[2], "w"); if (!outf) { perror(argv[2]); exit(1); } state = 2; lastaddr = 0; } if (curaddr < lastaddr) { fprintf(stderr, "%s line %d: address going backwards\n", infname, lineno); exit(1); } while (lastaddr < curaddr) { putc(fillbyte, outf); lastaddr++; } for (i = 0; i < datalen; i += 2) { putc(srecbin[i + 6], outf); putc(srecbin[i + 5], outf); } lastaddr = curaddr + datalen; continue; case '7': fclose(outf); exit(0); default: abort(); } } }