diff options
| -rw-r--r-- | board/freescale/mpc5121ads/mpc5121ads.c | 99 | ||||
| -rw-r--r-- | include/configs/mpc5121ads.h | 35 |
2 files changed, 130 insertions, 4 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; } 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 |