ARM (ARM11): add data cache support, test on Qong board
authorHeiko Schocher <hs@denx.de>
Fri, 17 Sep 2010 11:10:32 +0000 (13:10 +0200)
committerWolfgang Denk <wd@denx.de>
Sun, 19 Sep 2010 17:29:51 +0000 (19:29 +0200)
commit7e4a9e6dc819b2b3499659ca90e1e9c6d4ca3077
tree5e386feeea7c803a1800484bee8253796c030a39
parent95c6f6d34d4ff23f4d005488d84682eec5fa9ec8
ARM (ARM11): add data cache support, test on Qong board

Add data cache support for arm1136 systems.

Enable "cache" command on Qong board and test performance.

    Test 1: Loading 127 MB of data from NAND flash into RAM:

    Instr. Cache off on on
      Data Cache off off on
    --------------------------------------------------
    QONG (ARM11) 177s 95s 43s = x 4.1

    Test 2: uncompressing a gzipped image from RAM to RAM
            (size compressed: 6.5 MiB, uncompressed: 35 MiB):

    Instr. Cache off on on
      Data Cache off off on
    --------------------------------------------------
    QONG (ARM11) 1.54s 0.95s 0.18s = x 8.6

Portions of this work were supported by funding from
the CE Linux Forum.

Signed-off-by: Heiko Schocher <hs@denx.de>
arch/arm/cpu/arm1136/start.S
arch/arm/lib/cache.c
include/configs/qong.h