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Author SHA1 Message Date
Aidan MacDonald
7fa48faeb5 multiboot: Refactor duplicated functions to a separate file
The implementation of write_bootdata() and get_redirect_dir() was
copied verbatim in two different places, obviously a bad thing for
maintainability. This moves them to a new file multiboot.c as they
are only used for multiboot.

Change-Id: Id0279216e4dd019f8bf612a81d3835eff010e506
2022-03-11 10:58:20 -05:00
James Buren
581081a3df mi4: replace chksum_crc32 with crc_32r
This uses an equivalent algorithm but with a different initial value
than we normally use (all bits off vs all bits on). Use the new crc_32r
to replace the original MI4 crc32 implementation.

This frees up some extra space on mi4 targets which gives us more
room on a few very space constrained targets (sansa c200/e200, etc).

Change-Id: Iaaac3ae353b30566156b1404cbf31ca32926203d
2021-06-21 09:36:54 +00:00
Johannes Rauh
da190727e7 Enable boot from SD for Sansa e200
Change-Id: I0940f2cd5fc914d6d5061b5798b1a636009649b7
2020-08-19 19:17:01 -04:00
Marcin Bukat
e557951c94 crc-mi4: use const lookup table for crc
This doesn't touch external tools as I see no need for.

Change-Id: Ia69248c4b6a033c3772916525257e3540bddcffa
Reviewed-on: http://gerrit.rockbox.org/891
Tested: Sebastian Leonhardt <sebastian.leonhardt@web.de>
Reviewed-by: Marcin Bukat <marcin.bukat@gmail.com>
2014-07-07 12:54:50 +02:00
Marcin Bukat
314516e228 rolo: fix crc calculation for mi4
crc32gentab() which initilizes crc table was called in bootloader
but not in main binary. Fix this temporary by always calling it in
load_mi4(). The proper fix probably to switch to const table and
drop runtime initialization.

Change-Id: I8b0c2c791642f56ed56189d156647661935a815d
2014-07-01 09:16:03 +02:00
Marcin Bukat
0b29691324 Move load_firmware() to separate file
The idea is to share loading code between bootloaders and rolo().

Change-Id: I1656ed91946d7a05cb7c9fa7a16793c3c862a5cd
Reviewed-on: http://gerrit.rockbox.org/190
Reviewed-by: Marcin Bukat <marcin.bukat@gmail.com>
2013-06-27 13:50:11 +02:00