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Some 85xx cpu cleanups

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* Cleaned up the TSR[WIS] clearing
* Cleaned up DMA initialization

Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: Jon Loeliger <jdl@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Andy Fleming 2007-04-23 01:44:44 -05:00 • committed by Andrew Fleming-AFLEMING
parent 151d5d992e
commit 03b81b48ee
1 changed files with 8 additions and 3 deletions
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11
cpu/mpc85xx/cpu.c
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@ -198,9 +198,9 @@ reset_85xx_watchdog(void)
* Clear TSR(WIS) bit by writing 1
*/
unsigned long val;
val = mfspr(tsr);
val |= 0x40000000;
mtspr(tsr, val);
val = mfspr(SPRN_TSR);
val |= TSR_WIS;
mtspr(SPRN_TSR, val);
}
#endif /* CONFIG_WATCHDOG */
@ -211,6 +211,7 @@ void dma_init(void) {
dma->satr0 = 0x02c40000;
dma->datr0 = 0x02c40000;
dma->sr0 = 0xfffffff; /* clear any errors */
asm("sync; isync; msync");
return;
}
@ -225,6 +226,10 @@ uint dma_check(void) {
status = dma->sr0;
}
/* clear MR0[CS] channel start bit */
dma->mr0 &= 0x00000001;
asm("sync;isync;msync");
if (status != 0) {
printf ("DMA Error: status = %x\n", status);
}