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authorStefan Roese <sr@denx.de>2007-07-04 10:06:30 +0200
committerStefan Roese <sr@denx.de>2007-07-04 10:06:30 +0200
commit04e6c38b766eaa2f3287561563c9e215e0c3a0d4 (patch)
treefe6add157fff96f242e74810b3b79aff07625d73 /board/lwmon5/sdram.c
parent98c440bee623ecdd5322852732b883e696fb2140 (diff)
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ppc4xx: Update lwmon5 board
- Add optional ECC generation routine to preserve existing RAM values. This is needed for the Linux log-buffer support - Add optional DDR2 setup with CL=4 - GPIO50 not used anymore - Lime register setup added Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'board/lwmon5/sdram.c')
-rw-r--r--board/lwmon5/sdram.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/board/lwmon5/sdram.c b/board/lwmon5/sdram.c
index 85811ad..9a4a8ee 100644
--- a/board/lwmon5/sdram.c
+++ b/board/lwmon5/sdram.c
@@ -474,8 +474,27 @@ static void program_ecc(u32 start_address,
blank_string(strlen(str));
} else {
/* ECC bit set method for cached memory */
+#if 1 /* test-only: will remove this define later, when ECC problems are solved! */
+ /*
+ * Some boards (like lwmon5) need to preserve the memory
+ * content upon ECC generation (for the log-buffer).
+ * Therefore we don't fill the memory with a pattern or
+ * just zero it, but write the same values back that are
+ * already in the memory cells.
+ */
+ address_increment = CFG_CACHELINE_SIZE;
+ end_address = current_address + num_bytes;
+
+ current_address = start_address;
+ while (current_address < end_address) {
+ ppcDcbi(current_address);
+ ppcDcbf(current_address);
+ current_address += CFG_CACHELINE_SIZE;
+ }
+#else
dcbz_area(start_address, num_bytes);
dflush();
+#endif
}
sync();
@@ -518,6 +537,8 @@ long int initdram (int board_type)
{
u32 val;
+#if 0 /* test-only: will remove this define later, when ECC problems are solved! */
+ /* CL=3 */
mtsdram(DDR0_02, 0x00000000);
mtsdram(DDR0_00, 0x0000190A);
@@ -558,6 +579,49 @@ long int initdram (int board_type)
mtsdram(DDR0_43, 0x030A0200);
mtsdram(DDR0_44, 0x00000003);
mtsdram(DDR0_02, 0x00000001); /* Activate the denali core */
+#else
+ /* CL=4 */
+ mtsdram(DDR0_02, 0x00000000);
+
+ mtsdram(DDR0_00, 0x0000190A);
+ mtsdram(DDR0_01, 0x01000000);
+ mtsdram(DDR0_03, 0x02040803); /* A suitable burst length was taken. CAS is right for our board */
+
+ mtsdram(DDR0_04, 0x0B030300);
+ mtsdram(DDR0_05, 0x02020308);
+ mtsdram(DDR0_06, 0x0003C812);
+ mtsdram(DDR0_07, 0x00090100);
+ mtsdram(DDR0_08, 0x03c80001);
+ mtsdram(DDR0_09, 0x00011D5F);
+ mtsdram(DDR0_10, 0x00000300);
+ mtsdram(DDR0_11, 0x000CC800);
+ mtsdram(DDR0_12, 0x00000003);
+ mtsdram(DDR0_14, 0x00000000);
+ mtsdram(DDR0_17, 0x1e000000);
+ mtsdram(DDR0_18, 0x1e1e1e1e);
+ mtsdram(DDR0_19, 0x1e1e1e1e);
+ mtsdram(DDR0_20, 0x0B0B0B0B);
+ mtsdram(DDR0_21, 0x0B0B0B0B);
+#ifdef CONFIG_DDR_ECC
+ mtsdram(DDR0_22, 0x00267F0B | DDR0_22_CTRL_RAW_ECC_ENABLE); /* enable ECC */
+#else
+ mtsdram(DDR0_22, 0x00267F0B);
+#endif
+
+ mtsdram(DDR0_23, 0x01000000);
+ mtsdram(DDR0_24, 0x01010001);
+
+ mtsdram(DDR0_26, 0x2D93028A);
+ mtsdram(DDR0_27, 0x0784682B);
+
+ mtsdram(DDR0_28, 0x00000080);
+ mtsdram(DDR0_31, 0x00000000);
+ mtsdram(DDR0_42, 0x01000008);
+
+ mtsdram(DDR0_43, 0x050A0200);
+ mtsdram(DDR0_44, 0x00000005);
+ mtsdram(DDR0_02, 0x00000001); /* Activate the denali core */
+#endif
wait_for_dlllock();