X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=lib_blackfin%2Fbf533_string.c;h=1553f1b5ac491b1fa1c41536e8fa55dedaed6b39;hb=85e7c7a45e3dd9c7ce3e722352ba60f8df1a7a4b;hp=c8b1a3a9833de288bd77abff2713bfd6bc8d76ec;hpb=f6e5739a68131998a5ae8aa0cf56a0316f810200;p=u-boot diff --git a/lib_blackfin/bf533_string.c b/lib_blackfin/bf533_string.c index c8b1a3a983..1553f1b5ac 100644 --- a/lib_blackfin/bf533_string.c +++ b/lib_blackfin/bf533_string.c @@ -1,7 +1,7 @@ /* * U-boot - bf533_string.c Contains library routines. * - * Copyright (c) 2005 blackfin.uclinux.org + * Copyright (c) 2005-2007 Analog Devices Inc. * * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. @@ -21,16 +21,16 @@ * * 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., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA */ #include #include -#include -#include - -void *dma_memcpy(void *,const void *,size_t); +#include +#include +#include +#include "cache.h" char *strcpy(char *dest, const char *src) { @@ -38,11 +38,11 @@ char *strcpy(char *dest, const char *src) 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"); + ("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; } @@ -56,16 +56,16 @@ char *strncpy(char *dest, const char *src, size_t n) 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"); + ("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; } @@ -74,18 +74,16 @@ 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? */ + __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)); + "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; } @@ -97,24 +95,58 @@ int strncmp(const char *cs, const char *ct, size_t count) 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 */ + __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 */ + "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), + "4:": "=a"(cs), "=a"(ct), "=da"(count), "=d"(__res1), "=d"(__res2) - : "0"(cs), "1"(ct), "2"(count)); + : "0"(cs), "1"(ct), "2"(count)); return __res1; } +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); + sync(); + + *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 @@ -124,62 +156,30 @@ int strncmp(const char *cs, const char *ct, size_t count) * 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) +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; -/* 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++; + if (dcache_status()) { + blackfin_dcache_flush_range(src, src+count); } - 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); + /* L1_ISRAM can only be accessed via dma */ + if ((tmp >= (char *)L1_ISRAM) && (tmp < (char *)L1_ISRAM_END)) { + /* L1 is the destination */ + dma_memcpy(dest,src,count); + } else if ((s >= (char *)L1_ISRAM) && (s < (char *)L1_ISRAM_END)) { + /* L1 is the source */ + dma_memcpy(dest,src,count); + + if (icache_status()) { + blackfin_icache_flush_range(dest, dest+count); } - *pMDMA_D0_IRQ_STATUS |= (DMA_DONE | DMA_ERR); - - dest += count; - src += count; - return dest; + if (dcache_status()) { + blackfin_dcache_invalidate_range(dest, dest+count); + } + } else { + memcpy_ASM(dest,src,count); + } + return dest; }