u-boot/board/freescale/m5373evb/m5373evb.c
Becky Bruce 9973e3c614 Change initdram() return type to phys_size_t
This patch changes the return type of initdram() from long int to phys_size_t.
This is required for a couple of reasons: long int limits the amount of dram
to 2GB, and u-boot in general is moving over to phys_size_t to represent the
size of physical memory.  phys_size_t is defined as an unsigned long on almost
all current platforms.

This patch *only* changes the return type of the initdram function (in
include/common.h, as well as in each board's implementation of initdram).  It
does not actually modify the code inside the function on any of the platforms;
platforms which wish to support more than 2GB of DRAM will need to modify
their initdram() function code.

Build tested with MAKEALL for ppc, arm, mips, mips-el. Booted on powerpc
MPC8641HPCN.

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
2008-06-12 08:50:18 +02:00

88 lines
2 KiB
C

/*
* (C) Copyright 2000-2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <config.h>
#include <common.h>
#include <asm/immap.h>
DECLARE_GLOBAL_DATA_PTR;
int checkboard(void)
{
puts("Board: ");
puts("Freescale FireEngine 5373 EVB\n");
return 0;
};
phys_size_t initdram(int board_type)
{
volatile sdram_t *sdram = (volatile sdram_t *)(MMAP_SDRAM);
u32 dramsize, i;
dramsize = CFG_SDRAM_SIZE * 0x100000;
for (i = 0x13; i < 0x20; i++) {
if (dramsize == (1 << i))
break;
}
i--;
sdram->cs0 = (CFG_SDRAM_BASE | i);
sdram->cfg1 = CFG_SDRAM_CFG1;
sdram->cfg2 = CFG_SDRAM_CFG2;
/* Issue PALL */
sdram->ctrl = CFG_SDRAM_CTRL | 2;
/* Issue LEMR */
sdram->mode = CFG_SDRAM_EMOD;
sdram->mode = (CFG_SDRAM_MODE | 0x04000000);
udelay(500);
/* Issue PALL */
sdram->ctrl = (CFG_SDRAM_CTRL | 2);
/* Perform two refresh cycles */
sdram->ctrl = CFG_SDRAM_CTRL | 4;
sdram->ctrl = CFG_SDRAM_CTRL | 4;
sdram->mode = CFG_SDRAM_MODE;
sdram->ctrl = (CFG_SDRAM_CTRL & ~0x80000000) | 0x10000c00;
udelay(100);
return dramsize;
};
int testdram(void)
{
/* TODO: XXX XXX XXX */
printf("DRAM test not implemented!\n");
return (0);
}