diff options
Diffstat (limited to 'lib_blackfin/bf533_string.c')
| -rw-r--r-- | lib_blackfin/bf533_string.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/lib_blackfin/bf533_string.c b/lib_blackfin/bf533_string.c deleted file mode 100644 index 9ceeeef..0000000 --- a/lib_blackfin/bf533_string.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - * U-boot - bf533_string.c Contains library routines. - * - * Copyright (c) 2005-2007 Analog Devices Inc. - * - * (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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, - * MA 02110-1301 USA - */ - -#include <common.h> -#include <config.h> -#include <asm/blackfin.h> -#include <asm/io.h> -#include "cache.h" -#include <asm/mach-common/bits/dma.h> - -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; -} - -#ifndef pMDMA_D0_IRQ_STATUS -# define pMDMA_D0_IRQ_STATUS pMDMA1_D0_IRQ_STATUS -# define pMDMA_D0_START_ADDR pMDMA1_D0_START_ADDR -# define pMDMA_D0_X_COUNT pMDMA1_D0_X_COUNT -# define pMDMA_D0_X_MODIFY pMDMA1_D0_X_MODIFY -# define pMDMA_D0_CONFIG pMDMA1_D0_CONFIG -# define pMDMA_S0_IRQ_STATUS pMDMA1_S0_IRQ_STATUS -# define pMDMA_S0_START_ADDR pMDMA1_S0_START_ADDR -# define pMDMA_S0_X_COUNT pMDMA1_S0_X_COUNT -# define pMDMA_S0_X_MODIFY pMDMA1_S0_X_MODIFY -# define pMDMA_S0_CONFIG pMDMA1_S0_CONFIG -#endif - -static 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); - 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; - src += count; - return dest; -} - -/* - * 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. - */ -extern void *memcpy_ASM(void *dest, const void *src, size_t count); -void *memcpy(void *dest, const void *src, size_t count) -{ - char *tmp = (char *) dest, *s = (char *) src; - - if (dcache_status()) { - blackfin_dcache_flush_range(src, src+count); - } - /* L1_INST_SRAM can only be accessed via dma */ - if ((tmp >= (char *)L1_INST_SRAM) && (tmp < (char *)L1_INST_SRAM_END)) { - /* L1 is the destination */ - dma_memcpy(dest,src,count); - } else if ((s >= (char *)L1_INST_SRAM) && (s < (char *)L1_INST_SRAM_END)) { - /* L1 is the source */ - dma_memcpy(dest,src,count); - - if (icache_status()) { - blackfin_icache_flush_range(dest, dest+count); - } - if (dcache_status()) { - blackfin_dcache_invalidate_range(dest, dest+count); - } - } else { - memcpy_ASM(dest,src,count); - } - return dest; -} |