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memcpy() with Coldfire DMA started

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This commit is contained in:
Markus Fröschle
2013-07-30 19:19:14 +00:00
parent 519a55c7dc
commit 3dc3bc8297
1 changed files with 13 additions and 0 deletions
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13
BaS_gcc/sources/spidma.c
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@@ -7,11 +7,24 @@
#include "spidma.h" #include "spidma.h"
#include <MCD_dma.h> #include <MCD_dma.h>
#include "mcd_initiators.h"
#include "bas_printf.h" #include "bas_printf.h"
extern char _SYS_SRAM[]; extern char _SYS_SRAM[];
#define SYS_SRAM &_SYS_SRAM[0] #define SYS_SRAM &_SYS_SRAM[0]
void *dma_memcpy(void *dst, void *src, size_t n)
{
int ret;
ret = MCD_startDma(0, src, 1, dst, 1, n, 1, DMA_ALWAYS, 0, MCD_SINGLE_DMA, 0);
__asm__ __volatile__("move.w sr,d0\n\t"
"stop #0x270\n\t"
"move.w d0,sr": : :); /* halt CPU until DMA finished */
return dst;
}
int spidma_init(void) int spidma_init(void)
{ {
int res; int res;