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Diffstat (limited to 'lib_blackfin/bf533_string.c')
-rw-r--r--lib_blackfin/bf533_string.c183
1 files changed, 94 insertions, 89 deletions
diff --git a/lib_blackfin/bf533_string.c b/lib_blackfin/bf533_string.c
index c8b1a3a..1d0aeb6 100644
--- a/lib_blackfin/bf533_string.c
+++ b/lib_blackfin/bf533_string.c
@@ -28,9 +28,14 @@
#include <common.h>
#include <asm/setup.h>
#include <asm/page.h>
-#include <asm/cpu/defBF533.h>
+#include <config.h>
+#include <asm/blackfin.h>
-void *dma_memcpy(void *,const void *,size_t);
+extern void blackfin_icache_flush_range(const void *, const void *);
+extern void blackfin_dcache_flush_range(const void *, const void *);
+extern void *memcpy_ASM(void *dest, const void *src, size_t count);
+
+void *dma_memcpy(void *, const void *, size_t);
char *strcpy(char *dest, const char *src)
{
@@ -38,11 +43,11 @@ 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 +61,16 @@ 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 +79,16 @@ 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;
}
@@ -97,20 +100,19 @@ 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;
}
@@ -124,62 +126,65 @@ 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)
+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++;
+ char *tmp = (char *)dest, *s = (char *)src;
+
+ /* 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);
+
+ if (icache_status()) {
+ blackfin_icache_flush_range(src, 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);
+ }
+ if (dcache_status()) {
+ blackfin_dcache_flush_range(dest, dest + count);
+ }
+ } else {
+ memcpy_ASM(dest, src, count);
}
return dest;
}
-void *dma_memcpy(void * dest,const void *src,size_t count)
+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;
+
+ /* 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);
+ __builtin_bfin_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;
+ dest += count;
+ src += count;
+ return dest;
}
generated by cgit v1.1 at 2024-11-23 02:44:24 +0000