fsl_dma: Break out common memory initialization function

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

board/mpc8540eval/mpc8540eval.c

@@ -137,39 +137,9 @@ phys_size_t initdram (int board_type)
 	{
 		/* Initialize all of memory for ECC, then
 		 * enable errors */
-		uint *p = 0;
-		uint i = 0;
 		volatile ccsr_ddr_t *ddr= (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
 
-		for (*p = 0; p < (uint *)(8 * 1024); p++) {
-			if (((unsigned int)p & 0x1f) == 0) { dcbz(p); }
-			*p = (unsigned int)0xdeadbeef;
-			if (((unsigned int)p & 0x1c) == 0x1c) { dcbf(p); }
-		}
-
-		/* 8K */
-		dmacpy(0x2000, 0, 0x2000);
-		/* 16K */
-		dmacpy(0x4000, 0, 0x4000);
-		/* 32K */
-		dmacpy(0x8000, 0, 0x8000);
-		/* 64K */
-		dmacpy(0x10000, 0, 0x10000);
-		/* 128k */
-		dmacpy(0x20000, 0, 0x20000);
-		/* 256k */
-		dmacpy(0x40000, 0, 0x40000);
-		/* 512k */
-		dmacpy(0x80000, 0, 0x80000);
-		/* 1M */
-		dmacpy(0x100000, 0, 0x100000);
-		/* 2M */
-		dmacpy(0x200000, 0, 0x200000);
-		/* 4M */
-		dmacpy(0x400000, 0, 0x400000);
-
-		for (i = 1; i < dram_size / 0x800000; i++)
-			dmacpy(0x800000 * i, 0, 0x800000);
+		dma_meminit(CONFIG_MEM_INIT_VALUE, dram_size);
 
 		/* Enable errors for ECC */
 		ddr->err_disable = 0x00000000;

board/sbc8560/sbc8560.c

@@ -338,39 +338,9 @@ phys_size_t initdram (int board_type)
 	{
 		/* Initialize all of memory for ECC, then
 		 * enable errors */
-		uint *p = 0;
-		uint i = 0;
 		volatile ccsr_ddr_t *ddr= (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
 
-		for (*p = 0; p < (uint *)(8 * 1024); p++) {
-			if (((unsigned int)p & 0x1f) == 0) { dcbz(p); }
-			*p = (unsigned int)0xdeadbeef;
-			if (((unsigned int)p & 0x1c) == 0x1c) { dcbf(p); }
-		}
-
-		/* 8K */
-		dmacpy(0x2000, 0, 0x2000);
-		/* 16K */
-		dmacpy(0x4000, 0, 0x4000);
-		/* 32K */
-		dmacpy(0x8000, 0, 0x8000);
-		/* 64K */
-		dmacpy(0x10000, 0, 0x10000);
-		/* 128k */
-		dmacpy(0x20000, 0, 0x20000);
-		/* 256k */
-		dmacpy(0x40000, 0, 0x40000);
-		/* 512k */
-		dmacpy(0x80000, 0, 0x80000);
-		/* 1M */
-		dmacpy(0x100000, 0, 0x100000);
-		/* 2M */
-		dmacpy(0x200000, 0, 0x200000);
-		/* 4M */
-		dmacpy(0x400000, 0, 0x400000);
-
-		for (i = 1; i < dram_size / 0x800000; i++)
-			dmacpy(0x800000 * i, 0, 0x800000);
+		dma_meminit(CONFIG_MEM_INIT_VALUE, dram_size);
 
 		/* Enable errors for ECC */
 		ddr->err_disable = 0x00000000;

cpu/mpc85xx/ddr-gen1.c

@@ -73,33 +73,9 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 void
 ddr_enable_ecc(unsigned int dram_size)
 {
-	uint *p = 0;
-	uint i = 0;
 	volatile ccsr_ddr_t *ddr= (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
 
-	for (*p = 0; p < (uint *)(8 * 1024); p++) {
-		if (((unsigned int)p & 0x1f) == 0) {
-			ppcDcbz((unsigned long) p);
-		}
-		*p = (unsigned int)CONFIG_MEM_INIT_VALUE;
-		if (((unsigned int)p & 0x1c) == 0x1c) {
-			ppcDcbf((unsigned long) p);
-		}
-	}
-
-	dmacpy(0x002000, 0, 0x2000); /* 8K */
-	dmacpy(0x004000, 0, 0x4000); /* 16K */
-	dmacpy(0x008000, 0, 0x8000); /* 32K */
-	dmacpy(0x010000, 0, 0x10000); /* 64K */
-	dmacpy(0x020000, 0, 0x20000); /* 128K */
-	dmacpy(0x040000, 0, 0x40000); /* 256K */
-	dmacpy(0x080000, 0, 0x80000); /* 512K */
-	dmacpy(0x100000, 0, 0x100000); /* 1M */
-	dmacpy(0x200000, 0, 0x200000); /* 2M */
-	dmacpy(0x400000, 0, 0x400000); /* 4M */
-
-	for (i = 1; i < dram_size / 0x800000; i++)
-		dmacpy(0x800000 *i, 0, 0x800000);
+	dma_meminit(CONFIG_MEM_INIT_VALUE, dram_size);
 
 	/*
 	 * Enable errors for ECC.

drivers/dma/fsl_dma.c

@@ -110,3 +110,35 @@ int dmacpy(phys_addr_t dest, phys_addr_t src, phys_size_t count) {
 
 	return 0;
 }
+
+#if (defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER))
+void dma_meminit(uint val, uint size)
+{
+	uint *p = 0;
+	uint i = 0;
+
+	for (*p = 0; p < (uint *)(8 * 1024); p++) {
+		if (((uint)p & 0x1f) == 0)
+			ppcDcbz((ulong)p);
+
+		*p = (uint)CONFIG_MEM_INIT_VALUE;
+
+		if (((uint)p & 0x1c) == 0x1c)
+			ppcDcbf((ulong)p);
+	}
+
+	dmacpy(0x002000, 0, 0x002000); /* 8K */
+	dmacpy(0x004000, 0, 0x004000); /* 16K */
+	dmacpy(0x008000, 0, 0x008000); /* 32K */
+	dmacpy(0x010000, 0, 0x010000); /* 64K */
+	dmacpy(0x020000, 0, 0x020000); /* 128K */
+	dmacpy(0x040000, 0, 0x040000); /* 256K */
+	dmacpy(0x080000, 0, 0x080000); /* 512K */
+	dmacpy(0x100000, 0, 0x100000); /* 1M */
+	dmacpy(0x200000, 0, 0x200000); /* 2M */
+	dmacpy(0x400000, 0, 0x400000); /* 4M */
+
+	for (i = 1; i < size / 0x800000; i++)
+		dmacpy((0x800000 * i), 0, 0x800000);
+}
+#endif

include/asm-ppc/fsl_dma.h

@@ -97,6 +97,9 @@ typedef struct fsl_dma {
 #ifdef CONFIG_FSL_DMA
 void dma_init(void);
 int dmacpy(phys_addr_t dest, phys_addr_t src, phys_size_t n);
+#if (defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER))
+void dma_meminit(uint val, uint size);
+#endif
 #endif
 
 #endif	/* _ASM_DMA_H_ */