diff options
Diffstat (limited to 'arch/blackfin/lib/bf533_string.c')
| -rw-r--r-- | arch/blackfin/lib/bf533_string.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/arch/blackfin/lib/bf533_string.c b/arch/blackfin/lib/bf533_string.c deleted file mode 100644 index 860ee921c8..0000000000 --- a/arch/blackfin/lib/bf533_string.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * barebox - bf533_string.c Contains library routines. - * - * Copyright (c) 2005 blackfin.uclinux.org - * - * (C) Copyright 2000-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#include <common.h> -#include <asm/setup.h> -#include <asm/page.h> -#include <asm/cpu/defBF533.h> - -void *dma_memcpy(void *,const void *,size_t); - -char *strcpy(char *dest, const char *src) -{ - char *xdest = dest; - char temp = 0; - - __asm__ __volatile__ - ("1:\t%2 = B [%1++] (Z);\n\t" - "B [%0++] = %2;\n\t" - "CC = %2;\n\t" - "if cc jump 1b (bp);\n":"=a"(dest), "=a"(src), "=d"(temp) - :"0"(dest), "1"(src), "2"(temp):"memory"); - - return xdest; -} - -char *strncpy(char *dest, const char *src, size_t n) -{ - char *xdest = dest; - char temp = 0; - - if (n == 0) - return xdest; - - __asm__ __volatile__ - ("1:\t%3 = B [%1++] (Z);\n\t" - "B [%0++] = %3;\n\t" - "CC = %3;\n\t" - "if ! cc jump 2f;\n\t" - "%2 += -1;\n\t" - "CC = %2 == 0;\n\t" - "if ! cc jump 1b (bp);\n" - "2:\n":"=a"(dest), "=a"(src), "=da"(n), "=d"(temp) - :"0"(dest), "1"(src), "2"(n), "3"(temp) - :"memory"); - - return xdest; -} - -int strcmp(const char *cs, const char *ct) -{ - char __res1, __res2; - - __asm__ - ("1:\t%2 = B[%0++] (Z);\n\t" /* get *cs */ - "%3 = B[%1++] (Z);\n\t" /* get *ct */ - "CC = %2 == %3;\n\t" /* compare a byte */ - "if ! cc jump 2f;\n\t" /* not equal, break out */ - "CC = %2;\n\t" /* at end of cs? */ - "if cc jump 1b (bp);\n\t" /* no, keep going */ - "jump.s 3f;\n" /* strings are equal */ - "2:\t%2 = %2 - %3;\n" /* *cs - *ct */ - "3:\n": "=a"(cs), "=a"(ct), "=d"(__res1), - "=d"(__res2) - : "0"(cs), "1"(ct)); - - return __res1; -} - -int strncmp(const char *cs, const char *ct, size_t count) -{ - char __res1, __res2; - - if (!count) - return 0; - - __asm__ - ("1:\t%3 = B[%0++] (Z);\n\t" /* get *cs */ - "%4 = B[%1++] (Z);\n\t" /* get *ct */ - "CC = %3 == %4;\n\t" /* compare a byte */ - "if ! cc jump 3f;\n\t" /* not equal, break out */ - "CC = %3;\n\t" /* at end of cs? */ - "if ! cc jump 4f;\n\t" /* yes, all done */ - "%2 += -1;\n\t" /* no, adjust count */ - "CC = %2 == 0;\n\t" "if ! cc jump 1b;\n" /* more to do, keep going */ - "2:\t%3 = 0;\n\t" /* strings are equal */ - "jump.s 4f;\n" "3:\t%3 = %3 - %4;\n" /* *cs - *ct */ - "4:": "=a"(cs), "=a"(ct), "=da"(count), "=d"(__res1), - "=d"(__res2) - : "0"(cs), "1"(ct), "2"(count)); - - return __res1; -} - -/* - * memcpy - Copy one area of memory to another - * @dest: Where to copy to - * @src: Where to copy from - * @count: The size of the area. - * - * You should not use this function to access IO space, use memcpy_toio() - * or memcpy_fromio() instead. - */ -void * memcpy(void * dest,const void *src,size_t count) -{ - char *tmp = (char *) dest, *s = (char *) src; - -/* Turn off the cache, if destination in the L1 memory */ - if ( (tmp >= (char *)L1_ISRAM) && (tmp < (char *)L1_ISRAM_END) - || (tmp >= (char *)DATA_BANKA_SRAM) && (tmp < DATA_BANKA_SRAM_END) - || (tmp >= (char *)DATA_BANKB_SRAM) && (tmp < DATA_BANKB_SRAM_END) ){ - if(icache_status()){ - blackfin_icache_flush_range(src, src+count); - icache_disable(); - } - if(dcache_status()){ - blackfin_dcache_flush_range(src, src+count); - dcache_disable(); - } - dma_memcpy(dest,src,count); - }else{ - while(count--) - *tmp++ = *s++; - } - return dest; -} - -void *dma_memcpy(void * dest,const void *src,size_t count) -{ - - *pMDMA_D0_IRQ_STATUS = DMA_DONE | DMA_ERR; - - /* Copy sram functions from sdram to sram */ - /* Setup destination start address */ - *pMDMA_D0_START_ADDR = (volatile void **)dest; - /* Setup destination xcount */ - *pMDMA_D0_X_COUNT = count ; - /* Setup destination xmodify */ - *pMDMA_D0_X_MODIFY = 1; - - /* Setup Source start address */ - *pMDMA_S0_START_ADDR = (volatile void **)src; - /* Setup Source xcount */ - *pMDMA_S0_X_COUNT = count; - /* Setup Source xmodify */ - *pMDMA_S0_X_MODIFY = 1; - - /* Enable source DMA */ - *pMDMA_S0_CONFIG = (DMAEN); - asm("ssync;"); - - *pMDMA_D0_CONFIG = ( WNR | DMAEN); - - while(*pMDMA_D0_IRQ_STATUS & DMA_RUN){ - *pMDMA_D0_IRQ_STATUS |= (DMA_DONE | DMA_ERR); - } - *pMDMA_D0_IRQ_STATUS |= (DMA_DONE | DMA_ERR); - - dest += count; - - return dest; -} |