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authorOtavio Salvador <otavio@ossystems.com.br>2012-12-04 03:15:51 +0000
committerStefano Babic <sbabic@denx.de>2012-12-07 14:50:02 +0100
commit393ff47ba3123208f7c4f08d63f114300a41d0c4 (patch)
tree59730ac66d815eaf64ce1e0803781ae4a5a920d5
parenta918a53c3650dd2a7a96c3145cf0544e0c4b0e59 (diff)
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mxs: SPL: Generalize memory initialization
Use a generic 'dram_vals[]' array that has the full initialization sequence and rename the initialization method so it doesn't has a frequency on its name. Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
-rw-r--r--arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
index 8c7f34a..401c513 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
@@ -30,7 +30,11 @@
#include "mxs_init.h"
-static uint32_t mx28_dram_vals[] = {
+static uint32_t dram_vals[] = {
+/*
+ * i.MX28 DDR2 at 200MHz
+ */
+#if defined(CONFIG_MX28)
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00000000, 0x00000000, 0x00000000,
@@ -79,6 +83,9 @@ static uint32_t mx28_dram_vals[] = {
0x06120612, 0x04320432, 0x04320432, 0x00040004,
0x00040004, 0x00000000, 0x00000000, 0x00000000,
0x00000000, 0x00010001
+#else
+#error Unsupported memory initialization
+#endif
};
void __mxs_adjust_memory_params(uint32_t *dram_vals)
@@ -87,14 +94,14 @@ void __mxs_adjust_memory_params(uint32_t *dram_vals)
void mxs_adjust_memory_params(uint32_t *dram_vals)
__attribute__((weak, alias("__mxs_adjust_memory_params")));
-static void init_mx28_200mhz_ddr2(void)
+static void initialize_dram_values(void)
{
int i;
- mxs_adjust_memory_params(mx28_dram_vals);
+ mxs_adjust_memory_params(dram_vals);
- for (i = 0; i < ARRAY_SIZE(mx28_dram_vals); i++)
- writel(mx28_dram_vals[i], MXS_DRAM_BASE + (4 * i));
+ for (i = 0; i < ARRAY_SIZE(dram_vals); i++)
+ writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
}
static void mxs_mem_init_clock(void)
@@ -218,7 +225,7 @@ void mxs_mem_init(void)
/* Clear START bit from DRAM_CTL16 */
clrbits_le32(MXS_DRAM_BASE + 0x40, 1);
- init_mx28_200mhz_ddr2();
+ initialize_dram_values();
/* Clear SREFRESH bit from DRAM_CTL17 */
clrbits_le32(MXS_DRAM_BASE + 0x44, 1);