[U-Boot] [PATCH] Add Elpida Memory Configuration to mpc5121ads Boards
Martha M Stan
mmarx at silicontkx.com
Mon Sep 21 20:08:00 CEST 2009
Signed-off-by: Martha M Stan <mmarx at silicontkx.com>
---
board/freescale/mpc5121ads/mpc5121ads.c | 98 ++++++++++++++++++++++++++++++-
include/configs/mpc5121ads.h | 35 ++++++++++-
2 files changed, 129 insertions(+), 4 deletions(-)
diff --git a/board/freescale/mpc5121ads/mpc5121ads.c b/board/freescale/mpc5121ads/mpc5121ads.c
index 8defb00..4315734 100644
--- a/board/freescale/mpc5121ads/mpc5121ads.c
+++ b/board/freescale/mpc5121ads/mpc5121ads.c
@@ -31,6 +31,7 @@
#ifdef CONFIG_MISC_INIT_R
#include <i2c.h>
#endif
+#include <net.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
@@ -133,11 +134,104 @@ int board_early_init_f(void)
return 0;
}
+int is_micron(void){
+
+ ushort brd_rev = *(vu_short *)(CONFIG_SYS_CPLD_BASE + 0x00);
+ uchar macaddr[6];
+ u32 brddate, macchk, ismicron;
+
+ /*
+ * MAC address has serial number with date of manufacture
+ * Boards made before Nov-08 #1180 use Micron memory;
+ * 001e59 is the STx vendor #
+ * Default is Elpida since it works for both but is slightly slower
+ */
+ ismicron = 0;
+ if (brd_rev >= 0x0400 && eth_getenv_enetaddr("ethaddr", macaddr)) {
+ brddate = (macaddr[3] << 16) + (macaddr[4] << 8) + macaddr[5];
+ macchk = (macaddr[0] << 16) + (macaddr[1] << 8) + macaddr[2];
+ debug("brddate = %d\n\t", brddate);
+
+ if (macchk == 0x001e59 && brddate <= 8111180)
+ ismicron = 1;
+ } else if (brd_rev < 0x400) {
+ ismicron = 1;
+ }
+ debug("Using %s Memory settings\n\t",
+ ismicron ? "Micron" : "Elpida");
+ return(ismicron);
+}
+
phys_size_t initdram(int board_type)
{
- u32 msize = 0;
+ /* Elpida MDDRC and initialization settings are an alternative
+ * to the Default Micron ones for all but the earliest Rev 4 boards
+ */
+ u32 elpida_mddrc_config[4] = {
+ CONFIG_SYS_MDDRC_SYS_CFG_ELPIDA,
+ CONFIG_SYS_MDDRC_TIME_CFG0,
+ CONFIG_SYS_MDDRC_TIME_CFG1_ELPIDA,
+ CONFIG_SYS_MDDRC_TIME_CFG2_ELPIDA
+ };
+
+ u32 elpida_init_sequence[] = {
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_PCHG_ALL,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_RFSH,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_RFSH,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_EM2,
+ CONFIG_SYS_DDRCMD_EM3,
+ CONFIG_SYS_DDRCMD_EN_DLL,
+ CONFIG_SYS_ELPIDA_RES_DLL,
+ CONFIG_SYS_DDRCMD_PCHG_ALL,
+ CONFIG_SYS_DDRCMD_RFSH,
+ CONFIG_SYS_DDRCMD_RFSH,
+ CONFIG_SYS_DDRCMD_RFSH,
+ CONFIG_SYS_ELPIDA_INIT_DEV_OP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_OCD_DEFAULT,
+ CONFIG_SYS_ELPIDA_OCD_EXIT,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP,
+ CONFIG_SYS_DDRCMD_NOP
+ };
- msize = fixed_sdram(NULL, NULL, 0);
+ u32 msize = 0;
+ if (is_micron()) {
+ msize = fixed_sdram(NULL, NULL, 0);
+ } else {
+ msize = fixed_sdram(elpida_mddrc_config,
+ elpida_init_sequence,
+ sizeof(elpida_init_sequence)/sizeof(u32));
+ }
return msize;
}
diff --git a/include/configs/mpc5121ads.h b/include/configs/mpc5121ads.h
index 0c871c9..ebc518c 100644
--- a/include/configs/mpc5121ads.h
+++ b/include/configs/mpc5121ads.h
@@ -141,14 +141,45 @@
#endif
#define CONFIG_SYS_MDDRC_TIME_CFG0 0x06183D2E
+#define CONFIG_SYS_MDDRC_SYS_CFG_ELPIDA 0xEA802B00
+#define CONFIG_SYS_MDDRC_TIME_CFG1_ELPIDA 0x690e1189
+#define CONFIG_SYS_MDDRC_TIME_CFG2_ELPIDA 0x35310864
+
#define CONFIG_SYS_DDRCMD_NOP 0x01380000
#define CONFIG_SYS_DDRCMD_PCHG_ALL 0x01100400
#define CONFIG_SYS_DDRCMD_EM2 0x01020000
#define CONFIG_SYS_DDRCMD_EM3 0x01030000
#define CONFIG_SYS_DDRCMD_EN_DLL 0x01010000
#define CONFIG_SYS_DDRCMD_RFSH 0x01080000
-#define CONFIG_SYS_MICRON_INIT_DEV_OP 0x01000432
-#define CONFIG_SYS_DDRCMD_OCD_DEFAULT 0x01010780
+
+#define DDRCMD_EMR_OCD(pr, ohm) ( \
+ (1 << 24) | /* MDDRC Command Request */ \
+ (1 << 16) | /* MODE Reg BA[2:0] */ \
+ (0 << 12) | /* Outputs 0=Enabled */ \
+ (0 << 11) | /* RDQS */ \
+ (1 << 10) | /* DQS# */ \
+ (pr << 7) | /* OCD prog 7=deflt,0=exit */ \
+ /* ODT Rtt[1:0] 0=0,1=75,2=150,3=50 */ \
+ ((ohm & 0x2) << 5)| /* Rtt1 */ \
+ (0 << 3) | /* additive posted CAS# */ \
+ ((ohm & 0x1) << 2)| /* Rtt0 */ \
+ (0 << 0) | /* Output Drive Strength */ \
+ (0 << 0)) /* DLL Enable 0=Normal */
+
+#define CONFIG_SYS_DDRCMD_OCD_DEFAULT DDRCMD_EMR_OCD(7, 0)
+#define CONFIG_SYS_ELPIDA_OCD_EXIT DDRCMD_EMR_OCD(0, 0)
+
+#define DDRCMD_MODE_REG(cas, wr) ( \
+ (1 << 24) | /* MDDRC Command Request */ \
+ (0 << 16) | /* MODE Reg BA[2:0] */ \
+ ((wr-1) << 9)| /* Write Recovery */ \
+ (cas << 4) | /* CAS */ \
+ (0 << 3) | /* Burst Type:0=Sequential,1=Interleaved */ \
+ (2 << 0)) /* 4 or 8 Burst Length:0x2=4 0x3=8 */
+
+#define CONFIG_SYS_MICRON_INIT_DEV_OP DDRCMD_MODE_REG(3, 3)
+#define CONFIG_SYS_ELPIDA_INIT_DEV_OP DDRCMD_MODE_REG(4, 4)
+#define CONFIG_SYS_ELPIDA_RES_DLL (DDRCMD_MODE_REG(4, 4) | (1 << 8))
/* DDR Priority Manager Configuration */
#define CONFIG_SYS_MDDRCGRP_PM_CFG1 0x00077777
--
1.5.2.4
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