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arm: Use optimized memcpy and memset from linux

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Using optimized versions of memset and memcpy from linux brings a quite
noticeable speed (x2 or better) improvement for these two functions.

Here are some numbers for test done with jadecpu

                           | HEAD(1)| HEAD(1)| HEAD(2)| HEAD(2)|
                           |        | +patch |        | +patch |
---------------------------+--------+--------+--------+--------+
Reset to prompt            |  438ms |  330ms |  228ms |  120ms |
                           |        |        |        |        |
TFTP a 3MB img             | 4782ms | 3428ms | 3245ms | 2820ms |
                           |        |        |        |        |
FATLOAD USB a 3MB img*     | 8515ms | 8510ms | ------ | ------ |
                           |        |        |        |        |
BOOTM LZO img in RAM       | 3473ms | 3168ms |  592ms |  592ms |
 where CRC is              |  615ms |  615ms |   54ms |   54ms |
 uncompress                | 2460ms | 2462ms |  450ms |  451ms |
 final boot_elf            |  376ms |   68ms |   65ms |   65ms |
                           |        |        |        |        |
BOOTM LZO img in FLASH     | 3207ms | 2902ms | 1050ms | 1050ms |
 where CRC is              |  600ms |  600ms |  135ms |  135ms |
 uncompress                | 2209ms | 2211ms |  828ms |  828ms |
                           |        |        |        |        |
Copy 1.4MB from NOR to RAM |  134ms |   72ms |  120ms |   70ms |

(1) No dcache
(2) dcache enabled in board_init
*Does not work when dcache is on

Size impact:

C version:
   text    data     bss     dec     hex filename
 202862   18912  266456  488230   77326 u-boot

ASM version:
   text    data     bss     dec     hex filename
 203798   18912  266288  488998   77626 u-boot
222712  u-boot.bin

Signed-off-by: Matthias Weisser <weisserm@arcor.de>
This commit is contained in:
Matthias Weisser 2011-03-10 21:36:32 +00:00 • committed by Albert ARIBAUD
parent b65a77a861
commit d8834a1323
6 changed files with 443 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

60
arch/arm/include/asm/assembler.h Normal file
View file

@ -0,0 +1,60 @@
/*
* arch/arm/include/asm/assembler.h
*
* Copyright (C) 1996-2000 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This file contains arm architecture specific defines
* for the different processors.
*
* Do not include any C declarations in this file - it is included by
* assembler source.
*/
/*
* Endian independent macros for shifting bytes within registers.
*/
#ifndef __ARMEB__
#define pull lsr
#define push lsl
#define get_byte_0 lsl #0
#define get_byte_1 lsr #8
#define get_byte_2 lsr #16
#define get_byte_3 lsr #24
#define put_byte_0 lsl #0
#define put_byte_1 lsl #8
#define put_byte_2 lsl #16
#define put_byte_3 lsl #24
#else
#define pull lsl
#define push lsr
#define get_byte_0 lsr #24
#define get_byte_1 lsr #16
#define get_byte_2 lsr #8
#define get_byte_3 lsl #0
#define put_byte_0 lsl #24
#define put_byte_1 lsl #16
#define put_byte_2 lsl #8
#define put_byte_3 lsl #0
#endif
/*
* Data preload for architectures that support it
*/
#if defined(__ARM_ARCH_5E__) || defined(__ARM_ARCH_5TE__) || \
defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || \
defined(__ARM_ARCH_6T2__) || defined(__ARM_ARCH_6Z__) || \
defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_7A__) || \
defined(__ARM_ARCH_7R__)
#define PLD(code...) code
#else
#define PLD(code...)
#endif
/*
* Cache alligned
*/
#define CALGN(code...) code