diff options
Diffstat (limited to 'cpu/mpc86xx')
| -rw-r--r-- | cpu/mpc86xx/cpu.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/cpu/mpc86xx/cpu.c b/cpu/mpc86xx/cpu.c index f35323a..d47cc5e 100644 --- a/cpu/mpc86xx/cpu.c +++ b/cpu/mpc86xx/cpu.c @@ -182,20 +182,19 @@ watchdog_reset(void) void dma_init(void) { - volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; - volatile ccsr_dma_t *dma_base = &immap->im_dma; + volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC86xx_DMA_ADDR); volatile fsl_dma_t *dma = &dma_base->dma[0]; dma->satr = 0x00040000; dma->datr = 0x00040000; + dma->sr = 0xffffffff; /* clear any errors */ asm("sync; isync"); } uint dma_check(void) { - volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; - volatile ccsr_dma_t *dma_base = &immap->im_dma; + volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC86xx_DMA_ADDR); volatile fsl_dma_t *dma = &dma_base->dma[0]; volatile uint status = dma->sr; @@ -204,6 +203,10 @@ dma_check(void) status = dma->sr; } + /* clear MR[CS] channel start bit */ + dma->mr &= 0x00000001; + asm("sync;isync"); + if (status != 0) { printf("DMA Error: status = %x\n", status); } @@ -213,8 +216,7 @@ dma_check(void) int dma_xfer(void *dest, uint count, void *src) { - volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; - volatile ccsr_dma_t *dma_base = &immap->im_dma; + volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC86xx_DMA_ADDR); volatile fsl_dma_t *dma = &dma_base->dma[0]; dma->dar = (uint) dest; |