From d8834a1323af72f6145bc81adadd75185ef6065f Mon Sep 17 00:00:00 2001 From: Matthias Weisser Date: Thu, 10 Mar 2011 21:36:32 +0000 Subject: arm: Use optimized memcpy and memset from linux 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 --- arch/arm/include/asm/assembler.h | 60 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 arch/arm/include/asm/assembler.h (limited to 'arch/arm/include/asm/assembler.h') diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h new file mode 100644 index 0000000000..5e4789b145 --- /dev/null +++ b/arch/arm/include/asm/assembler.h @@ -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 -- cgit v1.2.3