FreeCalypso > hg > freecalypso-tools
view loadtools/flutil.c @ 619:f82551c77e58
libserial-newlnx: ASYNC_LOW_LATENCY patch reverted
Reports from Das Signal indicate that loadtools performance on Debian
is about the same as on Slackware, and that including or omitting the
ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the
patch in question does not appear to be necessary, it is being reverted
until and unless someone other than Serg reports an actual real-world
system on which loadtools operation times are slowed compared to the
Mother's Slackware reference and on which Slackware-like performance
can be restored by setting the ASYNC_LOW_LATENCY flag.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 27 Feb 2020 01:09:48 +0000 |
parents | 0dd2c87c1b63 |
children | ba9523ca6ed8 |
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/* * Miscellaneous utility functions for flash support */ #include <sys/types.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include "flash.h" extern struct flash_bank_info flash_bank_info[2]; get_flash_sector_table(bank) { struct flash_bank_info *bi; struct flash_geom *geom; struct flash_region_desc *reg; struct sector_info *sp; uint32_t offset; int nr, i; bi = flash_bank_info + bank; if (bi->sectors) return(0); i = flash_detect(bank, 0); if (i < 0) return(i); geom = bi->geom; sp = (struct sector_info *) malloc(sizeof(struct sector_info) * (geom->total_sectors + 1)); if (!sp) { fprintf(stderr, "unable to malloc buffer for flash bank %d sector table\n", bank); return(-1); } bi->sectors = sp; /* now fill it */ offset = 0; for (nr = 0; nr < geom->nregions; nr++) { reg = geom->regions + nr; for (i = 0; i < reg->nsectors; i++) { sp->start = offset; sp->size = reg->sector_size; sp++; offset += reg->sector_size; } } /* sanity checks */ if (sp - bi->sectors != geom->total_sectors) { fprintf(stderr, "BUG in get_flash_sector_table(): wrong # of sectors at the end\n"); abort(); } if (offset != geom->total_size) { fprintf(stderr, "BUG in get_flash_sector_table(): wrong offset at the end\n"); abort(); } /* finish */ sp->start = 0; sp->size = 0; return(0); } flashcmd_sectors(argc, argv, bank) char **argv; { struct flash_bank_info *bi; struct sector_info *sp; if (argc > 2) { fprintf(stderr, "error: too many arguments\n"); return(-1); } if (get_flash_sector_table(bank) < 0) return(-1); bi = flash_bank_info + bank; printf("%u sectors in flash bank %d:\n", bi->geom->total_sectors, bank); printf("Offset Size\n"); for (sp = bi->sectors; sp->size; sp++) printf("%08lX %lx\n", (u_long) sp->start, (u_long) sp->size); return(0); } get_flash_sector_range(bi, useroff, userlen, startp, endp) struct flash_bank_info *bi; u_long useroff, userlen; struct sector_info **startp, **endp; { struct sector_info *sp; uint32_t remlen; for (sp = bi->sectors; sp->size; sp++) if (sp->start == useroff) break; if (!sp->size) { fprintf(stderr, "error: specified offset not aligned to a flash sector boundary\n"); return(-1); } *startp = sp; for (remlen = userlen; remlen; ) { if (remlen < sp->size) { fprintf(stderr, "error: specified length not aligned to a flash sector boundary\n"); return(-1); } remlen -= sp->size; sp++; } *endp = sp; return(0); } build_flashw_hex_string(bin, strbuf, nwords, m0src) u_char *bin; char *strbuf; int nwords, m0src; { int i; u_char *dp; char *s; for (dp = bin, s = strbuf, i = 0; i < nwords; dp += 2, s += 4, i++) { if (m0src) sprintf(s, "%02X%02X", dp[0], dp[1]); else sprintf(s, "%02X%02X", dp[1], dp[0]); } *s = '\0'; }