diff options
| author | Rafal Jaworowski <raj@pollux.denx.de> | 2006-03-16 17:46:46 +0100 |
|---|---|---|
| committer | Rafal Jaworowski <raj@pollux.denx.de> | 2006-03-16 17:46:46 +0100 |
| commit | dc9e499c620a590e0f906e807e24c85807af3338 (patch) | |
| tree | 035fb097d198f6208bfd90a628b6faf2fb9f22d3 /board | |
| parent | d326f4a242971928ef5a6efb411a604b0478ef1c (diff) | |
| download | barebox-dc9e499c620a590e0f906e807e24c85807af3338.tar.gz barebox-dc9e499c620a590e0f906e807e24c85807af3338.tar.xz | |
Support for DDR with 32-data path. Addotional notes on injecting
multiple-bit errors.
Diffstat (limited to 'board')
| -rw-r--r-- | board/mpc8349emds/mpc8349emds.c | 48 |
1 files changed, 22 insertions, 26 deletions
diff --git a/board/mpc8349emds/mpc8349emds.c b/board/mpc8349emds/mpc8349emds.c index a468c5a7b5..73a33f68ce 100644 --- a/board/mpc8349emds/mpc8349emds.c +++ b/board/mpc8349emds/mpc8349emds.c @@ -63,11 +63,12 @@ long int initdram (int board_type) if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im) return -1; + puts("Initializing\n"); + /* DDR SDRAM - Main SODIMM */ im->sysconf.ddrlaw[0].bar = CFG_DDR_BASE & LAWBAR_BAR; #if defined(CONFIG_SPD_EEPROM) - - msize = spd_sdram(0); + msize = spd_sdram(); #else msize = fixed_sdram(); #endif @@ -106,45 +107,40 @@ int fixed_sdram(void) return -1; } } + im->sysconf.ddrlaw[0].bar = ((CFG_DDR_SDRAM_BASE>>12) & 0xfffff); im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE); + #if (CFG_DDR_SIZE != 256) #warning Currenly any ddr size other than 256 is not supported #endif - - im->ddr.csbnds[0].csbnds = 0x00100017; - im->ddr.csbnds[1].csbnds = 0x0018001f; - im->ddr.csbnds[2].csbnds = 0x00000007; - im->ddr.csbnds[3].csbnds = 0x0008000f; - im->ddr.cs_config[0] = CFG_DDR_CONFIG; - im->ddr.cs_config[1] = CFG_DDR_CONFIG; + im->ddr.csbnds[2].csbnds = 0x0000000f; im->ddr.cs_config[2] = CFG_DDR_CONFIG; - im->ddr.cs_config[3] = CFG_DDR_CONFIG; - im->ddr.timing_cfg_1 = - 3 << TIMING_CFG1_PRETOACT_SHIFT | - 7 << TIMING_CFG1_ACTTOPRE_SHIFT | - 3 << TIMING_CFG1_ACTTORW_SHIFT | - 4 << TIMING_CFG1_CASLAT_SHIFT | - 3 << TIMING_CFG1_REFREC_SHIFT | - 3 << TIMING_CFG1_WRREC_SHIFT | - 2 << TIMING_CFG1_ACTTOACT_SHIFT | - 1 << TIMING_CFG1_WRTORD_SHIFT; - im->ddr.timing_cfg_2 = 2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT; + + /* currently we use only one CS, so disable the other banks */ + im->ddr.cs_config[0] = 0; + im->ddr.cs_config[1] = 0; + im->ddr.cs_config[3] = 0; + + im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1; + im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2; + im->ddr.sdram_cfg = SDRAM_CFG_SREN #if defined(CONFIG_DDR_2T_TIMING) | SDRAM_CFG_2T_EN #endif | 2 << SDRAM_CFG_SDRAM_TYPE_SHIFT; - im->ddr.sdram_mode = - 0x2000 << SDRAM_MODE_ESD_SHIFT | - 0x0162 << SDRAM_MODE_SD_SHIFT; +#if defined (CONFIG_DDR_32BIT) + /* for 32-bit mode burst length is 8 */ + im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE); +#endif + im->ddr.sdram_mode = CFG_DDR_MODE; - im->ddr.sdram_interval = 0x045B << SDRAM_INTERVAL_REFINT_SHIFT | - 0x0100 << SDRAM_INTERVAL_BSTOPRE_SHIFT; + im->ddr.sdram_interval = CFG_DDR_INTERVAL; udelay(200); + /* enable DDR controller */ im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN; - return msize; } #endif/*!CFG_SPD_EEPROM*/ |