diff options
Diffstat (limited to 'board/adder')
| -rw-r--r-- | board/adder/adder.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/board/adder/adder.c b/board/adder/adder.c index cab6e2f..aa781584 100644 --- a/board/adder/adder.c +++ b/board/adder/adder.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2004 Arabella Software Ltd. + * Copyright (C) 2004-2005 Arabella Software Ltd. * Yuli Barcohen <yuli@arabellasw.com> * * Support for Analogue&Micro Adder boards family. @@ -28,7 +28,8 @@ #include <mpc8xx.h> /* - * SDRAM is single Samsung K4S643232F-T70 chip. + * SDRAM is single Samsung K4S643232F-T70 chip (8MB) + * or single Micron MT48LC4M32B2TG-7 chip (16MB). * Minimal CPU frequency is 40MHz. */ static uint sdram_table[] = { @@ -53,7 +54,7 @@ static uint sdram_table[] = { 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04, /* Refresh (offset 0x30 in UPM RAM) */ - 0x1ff5fca4, 0xfffffc04, 0xfffffc04, 0xfffffc04, + 0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc84, 0xfffffc07, 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04, 0xfffffc04, @@ -63,7 +64,7 @@ static uint sdram_table[] = { long int initdram (int board_type) { - long int msize = CFG_SDRAM_SIZE; + long int msize; volatile immap_t *immap = (volatile immap_t *)CFG_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; @@ -72,11 +73,11 @@ long int initdram (int board_type) /* Configure SDRAM refresh */ memctl->memc_mptpr = MPTPR_PTP_DIV32; /* BRGCLK/32 */ - memctl->memc_mamr = (94 << 24) | CFG_MAMR; - memctl->memc_mar = 0x0; + memctl->memc_mamr = (94 << 24) | CFG_MAMR; /* No refresh */ udelay(200); /* Run precharge from location 0x15 */ + memctl->memc_mar = 0x0; memctl->memc_mcr = 0x80002115; udelay(200); @@ -84,13 +85,18 @@ long int initdram (int board_type) memctl->memc_mcr = 0x80002830; udelay(200); - memctl->memc_mar = 0x88; - udelay(200); - /* Run MRS pattern from location 0x16 */ + memctl->memc_mar = 0x88; memctl->memc_mcr = 0x80002116; udelay(200); + memctl->memc_mamr |= MAMR_PTAE; /* Enable refresh */ + memctl->memc_or1 = ~(CFG_SDRAM_MAX_SIZE - 1) | OR_CSNT_SAM; + memctl->memc_br1 = CFG_SDRAM_BASE | BR_PS_32 | BR_MS_UPMA | BR_V; + + msize = get_ram_size(CFG_SDRAM_BASE, CFG_SDRAM_MAX_SIZE); + memctl->memc_or1 |= ~(msize - 1); + return msize; } |