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-rw-r--r--cpu/mpc83xx/spd_sdram.c52
-rw-r--r--cpu/mpc83xx/start.S12
2 files changed, 30 insertions, 34 deletions
diff --git a/cpu/mpc83xx/spd_sdram.c b/cpu/mpc83xx/spd_sdram.c
index acc8c9e..b91c613 100644
--- a/cpu/mpc83xx/spd_sdram.c
+++ b/cpu/mpc83xx/spd_sdram.c
@@ -562,54 +562,38 @@ static __inline__ unsigned long get_tbms (void)
/* #define CONFIG_DDR_ECC_INIT_VIA_DMA */
void ddr_enable_ecc(unsigned int dram_size)
{
- uint *p;
volatile immap_t *immap = (immap_t *)CFG_IMMRBAR;
volatile ddr83xx_t *ddr= &immap->ddr;
unsigned long t_start, t_end;
+ register u64 *p;
+ register uint size;
+ unsigned int pattern[2];
#if defined(CONFIG_DDR_ECC_INIT_VIA_DMA)
uint i;
#endif
-
- debug("Initialize a Cachline in DRAM\n");
icache_enable();
-
-#if defined(CONFIG_DDR_ECC_INIT_VIA_DMA)
- /* Initialise DMA for direct Transfers */
- dma_init();
-#endif
-
t_start = get_tbms();
+ pattern[0] = 0xdeadbeef;
+ pattern[1] = 0xdeadbeef;
#if !defined(CONFIG_DDR_ECC_INIT_VIA_DMA)
- debug("DDR init: Cache flush method\n");
- for (p = 0; p < (uint *)(dram_size); p++) {
- if (((unsigned int)p & 0x1f) == 0) {
- ppcDcbz((unsigned long) p);
- }
-
- /* write pattern to cache and flush */
- *p = (unsigned int)0xdeadbeef;
-
- if (((unsigned int)p & 0x1c) == 0x1c) {
- ppcDcbf((unsigned long) p);
- }
+ debug("ddr init: CPU FP write method\n");
+ size = dram_size;
+ for (p = 0; p < (u64*)(size); p++) {
+ ppcDWstore((u32*)p, pattern);
}
+ __asm__ __volatile__ ("sync");
#else
- printf("DDR init: DMA method\n");
- for (p = 0; p < (uint *)(8 * 1024); p++) {
- /* zero one data cache line */
- if (((unsigned int)p & 0x1f) == 0) {
- ppcDcbz((unsigned long)p);
- }
-
- /* write pattern to it and flush */
- *p = (unsigned int)0xdeadbeef;
-
- if (((unsigned int)p & 0x1c) == 0x1c) {
- ppcDcbf((unsigned long)p);
- }
+ debug("ddr init: DMA method\n");
+ size = 0x2000;
+ for (p = 0; p < (u64*)(size); p++) {
+ ppcDWstore((u32*)p, pattern);
}
+ __asm__ __volatile__ ("sync");
+ /* Initialise DMA for direct transfer */
+ dma_init();
+ /* Start DMA to transfer */
dma_xfer((uint *)0x2000, 0x2000, (uint *)0); /* 8K */
dma_xfer((uint *)0x4000, 0x4000, (uint *)0); /* 16K */
dma_xfer((uint *)0x8000, 0x8000, (uint *)0); /* 32K */
diff --git a/cpu/mpc83xx/start.S b/cpu/mpc83xx/start.S
index a7ed3c5..c43835c 100644
--- a/cpu/mpc83xx/start.S
+++ b/cpu/mpc83xx/start.S
@@ -870,6 +870,18 @@ ppcDcbz:
dcbz r0,r3
blr
+ .globl ppcDWstore
+ppcDWstore:
+ lfd 1, 0(r4)
+ stfd 1, 0(r3)
+ blr
+
+ .globl ppcDWload
+ppcDWload:
+ lfd 1, 0(r3)
+ stfd 1, 0(r4)
+ blr
+
/*-------------------------------------------------------------------*/
/*