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Add support for Adder boards with 16MB SDRAM;

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add support for second FEC on Adder87x board.
Patch by Yuli Barcohen, 05 Jun 2005
This commit is contained in:
Wolfgang Denk
2006-03-12 01:43:03 +01:00
parent 7c54c7018e
commit 5797b821dc
3 changed files with 36 additions and 25 deletions
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24
board/adder/adder.c
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@@ -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;
}