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-rw-r--r--board/freescale/mpc5121ads/mpc5121ads.c99
1 files changed, 97 insertions, 2 deletions
diff --git a/board/freescale/mpc5121ads/mpc5121ads.c b/board/freescale/mpc5121ads/mpc5121ads.c
index 8defb00..3323d66 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 +134,105 @@ 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;
-
- msize = fixed_sdram(NULL, NULL, 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_TIME_CFG0,
+ CONFIG_SYS_MDDRC_TIME_CFG1_ELPIDA,
+ CONFIG_SYS_MDDRC_TIME_CFG2_ELPIDA
+ CONFIG_SYS_MDDRC_SYS_CFG_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
+ };
+
+ 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;
}