diff options
Diffstat (limited to 'board/freescale')
| -rw-r--r-- | board/freescale/mpc5121ads/mpc5121ads.c | 99 |
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; } |