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authorPeter Tyser <ptyser@xes-inc.com>2009-06-30 17:15:48 -0500
committerKumar Gala <galak@kernel.crashing.org>2009-07-01 23:12:01 -0500
commit0d595f76bc9c7c8dff5bd31dffed87a840a03c56 (patch)
treefe9fd5c24c569893155ae2c52257c6402351af9b /drivers/dma/fsl_dma.c
parent79f4333ceb059049b3ee560167d6cbaec493695f (diff)
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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>
Diffstat (limited to 'drivers/dma/fsl_dma.c')
-rw-r--r--drivers/dma/fsl_dma.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/dma/fsl_dma.c b/drivers/dma/fsl_dma.c
index 49ea8f1..e103c91 100644
--- a/drivers/dma/fsl_dma.c
+++ b/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