diff options
| author | wdenk <wdenk> | 2004-01-24 20:25:54 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2004-01-24 20:25:54 +0000 |
| commit | c178d3da6f1ac765cd880530a0672540b415a01c (patch) | |
| tree | 67e3b8e9a791d2ec97798239b5abba15e0cb5aaf /board | |
| parent | ef978730dcb3e7e398fe9b57633f3f67260c1bbc (diff) | |
* Add variable CPU clock for MPC859/866 systems (so far only TQM866M):
see doc/README.MPC866 for details;
implement workaround for "SIU4" and "SIU9" silicon bugs on MPC866;
calculate CPU clock frequency from PLL register values.
* Add support for 128 MB RAM on TQM8xxL/M modules
Diffstat (limited to 'board')
| -rw-r--r-- | board/tqm8xx/tqm8xx.c | 42 |
1 files changed, 32 insertions, 10 deletions
diff --git a/board/tqm8xx/tqm8xx.c b/board/tqm8xx/tqm8xx.c index 73bee323073..8cc86fcaf02 100644 --- a/board/tqm8xx/tqm8xx.c +++ b/board/tqm8xx/tqm8xx.c @@ -128,6 +128,14 @@ int checkboard (void) break; putc (*s); } +#if defined(CFG_866_CPUCLK_MIN) && defined(CFG_866_CPUCLK_MAX) + printf (" [%d.%d...%d.%d MHz]", + CFG_866_CPUCLK_MIN / 1000000, + ((CFG_866_CPUCLK_MIN % 1000000) + 50000) / 100000, + CFG_866_CPUCLK_MAX / 1000000, + ((CFG_866_CPUCLK_MAX % 1000000) + 50000) / 100000 + ); +#endif putc ('\n'); return (0); @@ -139,7 +147,7 @@ long int initdram (int board_type) { volatile immap_t *immap = (immap_t *) CFG_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; - long int size8, size9; + long int size8, size9, size10; long int size_b0 = 0; long int size_b1 = 0; @@ -228,9 +236,26 @@ long int initdram (int board_type) SDRAM_MAX_SIZE); debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size9 >> 20); - if (size8 < size9) { /* leave configuration at 9 columns */ + udelay(1000); + +#if defined(CFG_MAMR_10COL) + /* + * try 10 column mode + */ + size10 = dram_size (CFG_MAMR_10COL, (ulong *) SDRAM_BASE2_PRELIM, + SDRAM_MAX_SIZE); + debug ("SDRAM Bank 0 in 10 column mode: %ld MB\n", size10 >> 20); +#else + size10 = 0; +#endif /* CFG_MAMR_10COL */ + + if ((size8 < size10) && (size9 < size10)) { + size_b0 = size10; + } else if ((size8 < size9) && (size10 < size9)) { size_b0 = size9; - } else { /* back to 8 columns */ + memctl->memc_mamr = CFG_MAMR_9COL; + udelay (500); + } else { size_b0 = size8; memctl->memc_mamr = CFG_MAMR_8COL; udelay (500); @@ -272,18 +297,15 @@ long int initdram (int board_type) if (size_b1 > size_b0) { /* SDRAM Bank 1 is bigger - map first */ memctl->memc_or3 = ((-size_b1) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM; - memctl->memc_br3 = - (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V; + memctl->memc_br3 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V; if (size_b0 > 0) { /* * Position Bank 0 immediately above Bank 1 */ - memctl->memc_or2 = - ((-size_b0) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM; - memctl->memc_br2 = - ((CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V) - + size_b1; + memctl->memc_or2 = ((-size_b0) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM; + memctl->memc_br2 = ((CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V) + + size_b1; } else { unsigned long reg; |