FreeCalypso > hg > freecalypso-tools
view target-utils/libtiffs/init.c @ 416:30f6d1c32c6f
doc/Flash-boot-defect article removed (no longer relevant)
This article is no longer relevant because the issue in question
only affected one (1) defective FCDEV3B board which was not
and never will be sold.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 26 Oct 2018 07:11:08 +0000 |
parents | c10a65f7563e |
children |
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#include "types.h" #include "struct.h" #include "globals.h" #include "macros.h" static const u8 ffs_sector_signature[6] = {'F', 'f', 's', '#', 0x10, 0x02}; static find_indexblk() { u32 sector_addr; u8 *sector_ptr; int i; printf("Looking for TIFFS active index block\n"); sector_addr = tiffs_base_addr; for (i = 0; i < tiffs_nsectors; i++) { sector_ptr = (u8 *) sector_addr; if (!bcmp(sector_ptr, ffs_sector_signature, 6) && sector_ptr[8] == 0xAB) { printf("Found at %08X\n", sector_addr); tiffs_active_index = (struct inode *) sector_ptr; return(0); } sector_addr += tiffs_sector_size; } printf("Error: Not found in any of the %d candidate sectors\n", tiffs_nsectors); return(-1); } static find_rootino() { int ino; struct inode *irec; printf("Looking for the root inode\n"); for (ino = 1; ; ino++) { if (ino >= tiffs_sector_size >> 4) { printf("Error: Hit end of sector, no root inode found\n"); return(-1); } irec = tiffs_active_index + ino; if (irec->type == OBJTYPE_DIR && *inode_to_dataptr(irec) == '/') break; } printf("Found at inode #%x\n", ino); tiffs_root_ino = ino; return(0); } tiffs_init() { int stat; if (tiffs_init_done) return(0); stat = find_indexblk(); if (stat < 0) return(stat); stat = find_rootino(); if (stat < 0) return(stat); tiffs_init_done = 1; return(0); }