FreeCalypso > hg > freecalypso-reveng
view pirelli/preboot.notes @ 84:8b15a0969c9e
beginning of C139 boot ROM re
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Thu, 27 Mar 2014 07:07:41 +0000 |
parents | 6a136554378e |
children |
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0xAA88 bytes are copied from 0x2508 to 0x810484 IRAM usage: 800000: everything from here to 81047C is zeroed out 800000: byte var, init to 0 800004: 1 written here 800008: var set to bottom of SVC stack 80000C: var set to top of SVC stack 800010: 16-bit checksum of copy-to-RAM block, before copy 800012: 16-bit checksum of copy-to-RAM block, after copy 810014: 16-bit var, init to 0 810016: 16-bit var, init to 0 810018: byte var, init to 0x00 810019: byte var, init to 0xBC 81001C: 32-bit var, init to 0 810020: byte var, init to 0x00, apparently flag indicating that the array at 0x810024 has been initialized 810021: byte var, init to 0x00 810024: 32-bit var, init to 0 810024: array of 3 structs, 24 (0x18) bytes each, one for each flash region init by routine at 0xb3a8 offset 00: ptr to start of flash region offset 04: 32-bit init to 0, appears to be a state in the [0,2] range: 0: initial 1: checked and found to contain an image 2: result of calling 0xb0c2 in mode 2 offset 08: byte init to 0, incremented each time 0xb0c2 in mode 1 succeeds offset 09: byte init to 0 offset 0C: init to 0x12345678 offset 10: 32-bit init to 0 offset 14: 16-bit init to 0 81006C: table of 3 32-bit words, pointers to structures describing 3 flash2 regions, init to {0081a4d0, 0081a768, 0081aa00} 810078: 32-bit var, init to 0 81047C: bottom of init stack (0x400 bytes) 81047C: byte var, init to 0 810484: first byte used by copied code block 81AF0B: last byte "" 81AF60: initial SP for abort and undef 81AFF8: bottom of SVC stack 81B454: initial SVC SP 81B4D4: initial IRQ SP 81B6D4: initial FIQ SP