FreeCalypso > hg > freecalypso-tools

annotate target-utils/libtiffs/init.c @ 995:74024eb17e04

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fc-loadtool help: improve language regarding 16 MiB flash chips In FC project history, 16 MiB flash originally meant Pirelli DP-L10. Then we got FCDEV3B with the same flash (our own design), but now we are discovering more Calypso devices that used such large flash, both late Calypso era (Sony Ericsson K2x0) as well as much earlier ones (FIC FLUID devices.txt file with 2004 dates, Leonardo+ rev 5). Hence we need to migrate to more generic or neutral language in associated documentation, without giving elevated status to specific examples that drove our early project history.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 03 Dec 2023 21:11:12 +0000
parents c10a65f7563e
children
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1 #include "types.h"
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2 #include "struct.h"
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3 #include "globals.h"
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4 #include "macros.h"
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5
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6 static const u8 ffs_sector_signature[6] = {'F', 'f', 's', '#', 0x10, 0x02};
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7
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8 static
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9 find_indexblk()
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10 {
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11 u32 sector_addr;
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12 u8 *sector_ptr;
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13 int i;
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15 printf("Looking for TIFFS active index block\n");
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16 sector_addr = tiffs_base_addr;
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17 for (i = 0; i < tiffs_nsectors; i++) {
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18 sector_ptr = (u8 *) sector_addr;
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19 if (!bcmp(sector_ptr, ffs_sector_signature, 6) &&
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20 sector_ptr[8] == 0xAB) {
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21 printf("Found at %08X\n", sector_addr);
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22 tiffs_active_index = (struct inode *) sector_ptr;
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23 return(0);
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24 }
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25 sector_addr += tiffs_sector_size;
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26 }
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27 printf("Error: Not found in any of the %d candidate sectors\n",
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28 tiffs_nsectors);
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29 return(-1);
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30 }
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32 static
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33 find_rootino()
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34 {
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35 int ino;
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36 struct inode *irec;
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37
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38 printf("Looking for the root inode\n");
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39 for (ino = 1; ; ino++) {
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40 if (ino >= tiffs_sector_size >> 4) {
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41 printf("Error: Hit end of sector, no root inode found\n");
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42 return(-1);
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43 }
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44 irec = tiffs_active_index + ino;
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45 if (irec->type == OBJTYPE_DIR && *inode_to_dataptr(irec) == '/')
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46 break;
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47 }
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48 printf("Found at inode #%x\n", ino);
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49 tiffs_root_ino = ino;
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50 return(0);
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51 }
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53 tiffs_init()
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54 {
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55 int stat;
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57 if (tiffs_init_done)
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58 return(0);
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59 stat = find_indexblk();
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60 if (stat < 0)
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61 return(stat);
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62 stat = find_rootino();
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63 if (stat < 0)
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64 return(stat);
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65 tiffs_init_done = 1;
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66 return(0);
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67 }