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comparison pirelli/preboot.notes @ 68:6a136554378e

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pirelli preboot re: figured out the triggering condition
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Mon, 10 Feb 2014 02:33:17 +0000
parents 88cf9811f97c
children
comparison
equal deleted inserted replaced
67:88cf9811f97c 68:6a136554378e
1 0xAA88 bytes are copied from 0x2508 to 0x810484 1 0xAA88 bytes are copied from 0x2508 to 0x810484
2 2
3 IRAM usage: 3 IRAM usage:
4 4
5 800000: everything from here to 81047C is zeroed out 5 800000: everything from here to 81047C is zeroed out
6 800000: byte var, init to 0
6 800004: 1 written here 7 800004: 1 written here
7 800008: var set to bottom of SVC stack 8 800008: var set to bottom of SVC stack
8 80000C: var set to top of SVC stack 9 80000C: var set to top of SVC stack
9 800010: 16-bit checksum of copy-to-RAM block, before copy 10 800010: 16-bit checksum of copy-to-RAM block, before copy
10 800012: 16-bit checksum of copy-to-RAM block, after copy 11 800012: 16-bit checksum of copy-to-RAM block, after copy
12 810014: 16-bit var, init to 0
13 810016: 16-bit var, init to 0
14 810018: byte var, init to 0x00
15 810019: byte var, init to 0xBC
16 81001C: 32-bit var, init to 0
17 810020: byte var, init to 0x00, apparently flag indicating that the array
18 at 0x810024 has been initialized
19 810021: byte var, init to 0x00
20 810024: 32-bit var, init to 0
21 810024: array of 3 structs, 24 (0x18) bytes each, one for each flash region
22 init by routine at 0xb3a8
23 offset 00: ptr to start of flash region
24 offset 04: 32-bit init to 0, appears to be a state in the [0,2] range:
25 0: initial
26 1: checked and found to contain an image
27 2: result of calling 0xb0c2 in mode 2
28 offset 08: byte init to 0, incremented each time 0xb0c2 in mode 1
29 succeeds
30 offset 09: byte init to 0
31 offset 0C: init to 0x12345678
32 offset 10: 32-bit init to 0
33 offset 14: 16-bit init to 0
34 81006C: table of 3 32-bit words, pointers to structures describing
35 3 flash2 regions, init to {0081a4d0, 0081a768, 0081aa00}
36 810078: 32-bit var, init to 0
11 81047C: bottom of init stack (0x400 bytes) 37 81047C: bottom of init stack (0x400 bytes)
38 81047C: byte var, init to 0
12 810484: first byte used by copied code block 39 810484: first byte used by copied code block
13 81AF0B: last byte "" 40 81AF0B: last byte ""
14 81AF60: initial SP for abort and undef 41 81AF60: initial SP for abort and undef
15 81AFF8: bottom of SVC stack 42 81AFF8: bottom of SVC stack
16 81B454: initial SVC SP 43 81B454: initial SVC SP