diff options
Diffstat (limited to 'board/icecube/icecube.c')
| -rw-r--r-- | board/icecube/icecube.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/board/icecube/icecube.c b/board/icecube/icecube.c index 1b69d13..e0adec3 100644 --- a/board/icecube/icecube.c +++ b/board/icecube/icecube.c @@ -68,6 +68,24 @@ static void sdram_start (int hi_addr) { long hi_addr_bit = hi_addr ? 0x01000000 : 0; +#ifdef CONFIG_MPC5200_DDR + /* unlock mode register */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f00 | hi_addr_bit; + /* precharge all banks */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f02 | hi_addr_bit; + /* set mode register: extended mode */ + *(vu_long *)MPC5XXX_SDRAM_MODE = 0x40090000; + /* set mode register: reset DLL */ + *(vu_long *)MPC5XXX_SDRAM_MODE = 0x058d0000; + /* precharge all banks */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f02 | hi_addr_bit; + /* auto refresh */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xf05f0f04 | hi_addr_bit; + /* set mode register */ + *(vu_long *)MPC5XXX_SDRAM_MODE = 0x018d0000; + /* normal operation */ + *(vu_long *)MPC5XXX_SDRAM_CTRL = 0x705f0f00 | hi_addr_bit; +#else /* unlock mode register */ *(vu_long *)MPC5XXX_SDRAM_CTRL = 0xd04f0000 | hi_addr_bit; /* precharge all banks */ @@ -86,12 +104,16 @@ static void sdram_start (int hi_addr) *(vu_long *)MPC5XXX_SDRAM_MODE = 0x008d0000; /* normal operation */ *(vu_long *)MPC5XXX_SDRAM_CTRL = 0x504f0000 | hi_addr_bit; +#endif } #endif long int initdram (int board_type) { ulong dramsize = 0; +#ifdef CONFIG_MPC5200_DDR + ulong dramsize2 = 0; +#endif #ifndef CFG_RAMBOOT ulong test1, test2; @@ -100,9 +122,18 @@ long int initdram (int board_type) *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */ *(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */ +#ifdef CONFIG_MPC5200_DDR + /* setup config registers */ + *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = 0x73722930; + *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x47770000; + + /* set tap delay to 0x10 */ + *(vu_long *)MPC5XXX_CDM_PORCFG = 0x10000000; +#else /* setup config registers */ *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = 0xc2233a00; *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = 0x88b70004; +#endif #elif defined(CONFIG_MGT5100) *(vu_long *)MPC5XXX_SDRAM_START = 0x00000000; @@ -129,7 +160,23 @@ long int initdram (int board_type) #if defined(CONFIG_MPC5200) *(vu_long *)MPC5XXX_SDRAM_CS0CFG = (0x13 + __builtin_ffs(dramsize >> 20) - 1); +#ifdef CONFIG_MPC5200_DDR + *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */ + sdram_start(0); + test1 = dram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000); + sdram_start(1); + test2 = dram_size((ulong *)(CFG_SDRAM_BASE + dramsize), 0x80000000); + if (test1 > test2) { + sdram_start(0); + dramsize2 = test1; + } else { + dramsize2 = test2; + } + *(vu_long *)MPC5XXX_SDRAM_CS1CFG = + dramsize + (0x13 + __builtin_ffs(dramsize2 >> 20) - 1); +#else *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */ +#endif #elif defined(CONFIG_MGT5100) *(vu_long *)MPC5XXX_SDRAM_STOP = ((dramsize - 1) >> 15); #endif @@ -140,8 +187,15 @@ long int initdram (int board_type) dramsize = ((*(vu_long *)MPC5XXX_SDRAM_STOP + 1) << 15); #else dramsize = ((1 << (*(vu_long *)MPC5XXX_SDRAM_CS0CFG - 0x13)) << 20); +#ifdef CONFIG_MPC5200_DDR + dramsize2 = ((1 << (*(vu_long *)MPC5XXX_SDRAM_CS1CFG - 0x13)) << 20); +#endif #endif #endif /* CFG_RAMBOOT */ + +#ifdef CONFIG_MPC5200_DDR + dramsize += dramsize2; +#endif /* return total ram size */ return dramsize; } |