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mkamsboot: fix for newer fuzev2

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These models are restricted to OF >= v02.3.31, probably because of a
hardware change
The OF checks a version string located between 0x0 and 0x200 in the
firmware block, so let's keep this part unmodified

We put our dualboot code at 0x200, and insert a branch + vectors at 0x0
That way our patched file will present the OF version to the fuzev2 OF
patching it, and we only waste 512 bytes on other models

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27441 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rafaël Carré 2010-07-16 00:00:29 +00:00
parent 6d732a32bc
commit f5c79105a4
4 changed files with 162 additions and 173 deletions
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15
rbutil/mkamsboot/dualboot/dualboot.S
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@ -51,20 +51,9 @@
#error i2c prescaler too big!
#endif
/* Vectors */
b start @ skip our data
ldr pc, =start /* reset vector */
/* next vectors are unused, halt cpu */
1: b 1b
1: b 1b
1: b 1b
1: b 1b
1: b 1b
1: b 1b
1: b 1b
/* These values are filled in by mkamsboot - don't move them from offset 0x20 */
/* These values are filled in by mkamsboot - don't move them from offset 0x4 */
uclunpack_end: .word 0 /* End of the ucl_unpack function */
uclunpack_size: .word 0 /* Size in bytes of the ucl_unpack function */