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(parent: eea8a32) | patch
MIPS: start.S: optimize BSS initialization
authorDaniel Schwierzeck <daniel.schwierzeck@gmail.com>
Tue, 12 Feb 2013 21:22:13 +0000 (22:22 +0100)
committerDaniel Schwierzeck <daniel.schwierzeck@gmail.com>
Tue, 12 Feb 2013 21:22:13 +0000 (22:22 +0100)
commit696a3b2a5368360c149335e2a35b8900a78f47fa
treeebad9e8ee6bfd035c5b9b10a965ae77f129df305tree | snapshot
parenteea8a320e1299cbd76d3ffd9a1fe0e0d3313268bcommit | diff
MIPS: start.S: optimize BSS initialization

Get the start and end address for clearing BSS from the newly
introduced symbols __bss_start and __bss_end. After GOT is
relocated, those symbols are already pointing to the correct
addresses.

Also optimize the loop by moving the address incrementation
to the delay slot to avoid the initial sub instruction.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
arch/mips/cpu/mips32/start.S diff | blob | history
arch/mips/cpu/mips64/start.S diff | blob | history
arch/mips/cpu/xburst/start.S diff | blob | history
My U-Boot fork