diff options
Diffstat (limited to 'board/tqc/tqm85xx/sdram.c')
-rw-r--r-- | board/tqc/tqm85xx/sdram.c | 70 |
1 files changed, 21 insertions, 49 deletions
diff --git a/board/tqc/tqm85xx/sdram.c b/board/tqc/tqm85xx/sdram.c index 503c5e5..b2d3185 100644 --- a/board/tqc/tqm85xx/sdram.c +++ b/board/tqc/tqm85xx/sdram.c @@ -65,6 +65,7 @@ sdram_conf_t ddr_cs_conf[] = { #define N_DDR_CS_CONF (sizeof(ddr_cs_conf) / sizeof(ddr_cs_conf[0])) int cas_latency (void); +static phys_size_t sdram_setup(int); /* * Autodetect onboard DDR SDRAM on 85xx platforms @@ -73,7 +74,26 @@ int cas_latency (void); * so this should be extended for other future boards * using this routine! */ -long int sdram_setup (int casl) +phys_size_t fixed_sdram(void) +{ + int casl = 0; + phys_size_t dram_size = 0; + + casl = cas_latency(); + dram_size = sdram_setup(casl); + if ((dram_size == 0) && (casl != CONFIG_DDR_DEFAULT_CL)) { + /* + * Try again with default CAS latency + */ + printf("Problem with CAS lantency, using default CL %d/10!\n", + CONFIG_DDR_DEFAULT_CL); + dram_size = sdram_setup(CONFIG_DDR_DEFAULT_CL); + puts(" "); + } + return dram_size; +} + +static phys_size_t sdram_setup(int casl) { int i; volatile ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR); @@ -374,54 +394,6 @@ long int sdram_setup (int casl) return (i < N_DDR_CS_CONF) ? ddr_cs_conf[i].size : 0; } -phys_size_t initdram (int board_type) -{ - long dram_size = 0; - int casl; - -#if defined(CONFIG_DDR_DLL) - /* - * This DLL-Override only used on TQM8540 and TQM8560 - */ - { - volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); - int i, x; - - x = 10; - - /* - * Work around to stabilize DDR DLL - */ - gur->ddrdllcr = 0x81000000; - asm ("sync; isync; msync"); - udelay (200); - while (gur->ddrdllcr != 0x81000100) { - gur->devdisr = gur->devdisr | 0x00010000; - asm ("sync; isync; msync"); - for (i = 0; i < x; i++) - ; - gur->devdisr = gur->devdisr & 0xfff7ffff; - asm ("sync; isync; msync"); - x++; - } - } -#endif - - casl = cas_latency (); - dram_size = sdram_setup (casl); - if ((dram_size == 0) && (casl != CONFIG_DDR_DEFAULT_CL)) { - /* - * Try again with default CAS latency - */ - printf ("Problem with CAS lantency, using default CL %d/10!\n", - CONFIG_DDR_DEFAULT_CL); - dram_size = sdram_setup (CONFIG_DDR_DEFAULT_CL); - puts (" "); - } - - return dram_size; -} - #if defined(CONFIG_SYS_DRAM_TEST) int testdram (void) { |