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annotate gsm-fw/services/ffs/cfgffs.c @ 250:3d88461d8284

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beginning of TIFFS IVA documentation
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Fri, 31 Jan 2014 07:37:39 +0000
parents 4d706a4134b0
children f22b34873ea5
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1 /******************************************************************************
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2 * Flash File System (ffs)
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3 * Idea, design and coding by Mads Meisner-Jensen, mmj@ti.com
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4 *
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5 * FFS configuration
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6 *
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7 * $Id: cfgffs.c 1.27 Fri, 19 Dec 2003 12:00:13 +0100 tsj $
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8 *
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9 ******************************************************************************/
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10
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11 #include "../../include/config.h"
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12 #include "ffs.h"
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13 #include "drv.h"
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14 #include "ramffs.h"
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15 #include <string.h>
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16
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17 #if FFS_IN_RAM
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18
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19 struct dev_s dev = {
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20 .base = _RAMFFS_area,
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21 .manufact = MANUFACT_RAM,
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22 .blocksize = RAMFFS_BLKSIZE_BYTES,
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23 .blocksize_ld = RAMFFS_BLKSIZE_LOG2,
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24 .driver = FFS_DRIVER_RAM,
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25 .numblocks = RAMFFS_NBLOCKS,
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26 };
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27
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28 #elif CONFIG_MOKOFFS
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29
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30 struct dev_s dev = {
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31 .base = (char *) 0x380000,
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32 .manufact = MANUFACT_SAMSUNG,
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33 .device = 0x22A0,
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34 .blocksize = 0x10000,
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35 .blocksize_ld = 16,
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36 .driver = FFS_DRIVER_AMD,
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37 .numblocks = 7,
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38 };
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39
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40 #elif CONFIG_PIRHACK_FFS
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41
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42 /* see ../../cfgmagic/feature.pirhack-ffs */
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43
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44 struct dev_s dev = {
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45 .base = (char *) FLASH2_BASE_ADDR +
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46 CONFIG_PIRHACK_FFS_START * 0x40000,
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47 .manufact = MANUFACT_AMD,
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48 .blocksize = 0x40000,
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49 .blocksize_ld = 18,
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50 .driver = FFS_DRIVER_AMD,
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51 .numblocks = CONFIG_PIRHACK_FFS_NBLOCKS,
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52 };
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53
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54 #else
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55
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56 #error "No valid FFS configuration defined"
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57
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58 #endif
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59
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60 /******************************************************************************
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61 * ffs_is_modify_valid()
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62 ******************************************************************************/
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63
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64 // This is function to be implemented by the application programmer. It is
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65 // called by ffs when a read-only object is about to be modified or
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66 // removed. It should return zero if the operation should be
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67 // disallowed. Returning non-zero means go ahead.
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68 effs_t ffs_is_modifiable(const char *name)
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69 {
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70 // default is to allow any modification of read-only objects.
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71
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72 /*
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73 * TI's original code (conditioned out below) disallowed changing the
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74 * IMEI of a device. FreeCalypso follows a different philosophy:
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75 * 100% user empowerment, hence no artificial obstacles to hacking.
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76 */
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77 #if 0
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78 // example of how to disallow modifying a specific object...
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79 if (strcmp("IMEI", &name[strlen(name) - 4]) == 0)
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80 return 0;
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81 #endif
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82
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83 return 1;
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84 }