Merge with http://www.denx.de/git/u-boot.git

1 files changed, 185 insertions, 0 deletions

diff --git a/lib_blackfin/bf533_string.c b/lib_blackfin/bf533_string.c
new file mode 100644
index 0000000..c8b1a3a
--- /dev/null
+++ b/lib_blackfin/bf533_string.c
@@ -0,0 +1,185 @@
+/*
+ * U-boot - 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.
+ *
+ * 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
+ */
+
+#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;
+		src  += count;
+		return dest;
+}