FreeCalypso > hg > freecalypso-sw

annotate target-utils/libmpffs/init.c @ 192:707aa640b2dc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fc-tmsh: w8/w16/w32 implemented
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Mon, 25 Nov 2013 05:37:46 +0000
parents 02ece4d8c755
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
100
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1 #include "types.h"
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
2 #include "struct.h"
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
3 #include "globals.h"
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
4 #include "macros.h"
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
5
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
6 static const u8 ffs_sector_signature[6] = {'F', 'f', 's', '#', 0x10, 0x02};
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
7 static const u8 blank_flash_line[16] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
8 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
9 0xFF, 0xFF, 0xFF, 0xFF};
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
10
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
11 static
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
12 find_indexblk()
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
13 {
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
14 u32 sector_addr;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
15 u8 *sector_ptr;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
16 int i;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
17
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
18 printf("Looking for MPFFS active index block\n");
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
19 sector_addr = mpffs_base_addr;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
20 for (i = 0; i < mpffs_nsectors; i++) {
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
21 sector_ptr = (u8 *) sector_addr;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
22 if (!bcmp(sector_ptr, ffs_sector_signature, 6) &&
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
23 sector_ptr[8] == 0xAB) {
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
24 printf("Found at %08X\n", sector_addr);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
25 mpffs_active_index = (struct inode *) sector_ptr;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
26 return(0);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
27 }
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
28 sector_addr += mpffs_sector_size;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
29 }
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
30 printf("Error: Not found in any of the %d candidate sectors\n",
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
31 mpffs_nsectors);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
32 return(-1);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
33 }
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
34
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
35 static
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
36 find_rootino()
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
37 {
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
38 int ino;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
39 struct inode *irec;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
40
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
41 printf("Looking for the root inode\n");
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
42 for (ino = 1; ; ino++) {
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
43 if (ino >= mpffs_sector_size >> 4) {
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
44 printf("Error: Hit end of sector, no root inode found\n");
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
45 return(-1);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
46 }
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
47 irec = mpffs_active_index + ino;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
48 if (!bcmp((u8 *) irec, blank_flash_line, 16)) {
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
49 printf("Error: Hit blank flash, no root inode found\n");
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
50 return(-1);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
51 }
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
52 if (irec->type == OBJTYPE_DIR && *inode_to_dataptr(irec) == '/')
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
53 break;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
54 }
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
55 printf("Found at inode #%x\n", ino);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
56 mpffs_root_ino = ino;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
57 return(0);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
58 }
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
59
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
60 mpffs_init()
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
61 {
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
62 int stat;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
63
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
64 if (mpffs_init_done)
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
65 return(0);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
66 stat = find_indexblk();
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
67 if (stat < 0)
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
68 return(stat);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
69 stat = find_rootino();
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
70 if (stat < 0)
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
71 return(stat);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
72 mpffs_init_done = 1;
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
73 return(0);
02ece4d8c755 pirexplore: beginning of FFS support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
74 }