* (C) Copyright 2000-2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
- * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * Copyright (C) 2004-2007, 2012 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <common.h>
#include <asm/immap.h>
+#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
phys_size_t initdram(int board_type)
{
- volatile sdram_t *sdram = (volatile sdram_t *)(MMAP_SDRAM);
- volatile gpio_t *gpio = (volatile gpio_t *)(MMAP_GPIO);
+ sdram_t *sdram = (sdram_t *)(MMAP_SDRAM);
+ gpio_t *gpio = (gpio_t *)(MMAP_GPIO);
u32 dramsize, i, dramclk;
/*
* the port-size of SDRAM. In this case it is necessary to enable
* Data[15:0] on Port Address/Data.
*/
- gpio->par_ad =
- GPIO_PAR_AD_ADDR23 | GPIO_PAR_AD_ADDR22 | GPIO_PAR_AD_ADDR21 |
- GPIO_PAR_AD_DATAL;
+ out_8(&gpio->par_ad,
+ GPIO_PAR_AD_ADDR23 | GPIO_PAR_AD_ADDR22 | GPIO_PAR_AD_ADDR21 |
+ GPIO_PAR_AD_DATAL);
/* Initialize PAR to enable SDRAM signals */
- gpio->par_sdram =
- GPIO_PAR_SDRAM_SDWE | GPIO_PAR_SDRAM_SCAS | GPIO_PAR_SDRAM_SRAS |
- GPIO_PAR_SDRAM_SCKE | GPIO_PAR_SDRAM_SDCS(3);
+ out_8(&gpio->par_sdram,
+ GPIO_PAR_SDRAM_SDWE | GPIO_PAR_SDRAM_SCAS |
+ GPIO_PAR_SDRAM_SRAS | GPIO_PAR_SDRAM_SCKE |
+ GPIO_PAR_SDRAM_SDCS(3));
- dramsize = CFG_SDRAM_SIZE * 0x100000;
+ dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000;
for (i = 0x13; i < 0x20; i++) {
if (dramsize == (1 << i))
break;
}
i--;
- if (!(sdram->dacr0 & SDRAMC_DARCn_RE)) {
- dramclk = gd->bus_clk / (CFG_HZ * CFG_HZ);
+ if (!(in_be32(&sdram->dacr0) & SDRAMC_DARCn_RE)) {
+ dramclk = gd->bus_clk / (CONFIG_SYS_HZ * CONFIG_SYS_HZ);
/* Initialize DRAM Control Register: DCR */
- sdram->dcr = SDRAMC_DCR_RTIM_9CLKS |
- SDRAMC_DCR_RTIM_6CLKS | SDRAMC_DCR_RC((15 * dramclk) >> 4);
+ out_be16(&sdram->dcr, SDRAMC_DCR_RTIM_9CLKS |
+ SDRAMC_DCR_RTIM_6CLKS |
+ SDRAMC_DCR_RC((15 * dramclk) >> 4));
/* Initialize DACR0 */
- sdram->dacr0 =
- SDRAMC_DARCn_BA(CFG_SDRAM_BASE) | SDRAMC_DARCn_CASL_C1 |
- SDRAMC_DARCn_CBM_CMD20 | SDRAMC_DARCn_PS_32;
+ out_be32(&sdram->dacr0,
+ SDRAMC_DARCn_BA(CONFIG_SYS_SDRAM_BASE) |
+ SDRAMC_DARCn_CASL_C1 | SDRAMC_DARCn_CBM_CMD20 |
+ SDRAMC_DARCn_PS_32);
asm("nop");
/* Initialize DMR0 */
- sdram->dmr0 = ((dramsize - 1) & 0xFFFC0000) | SDRAMC_DMRn_V;
+ out_be32(&sdram->dmr0,
+ ((dramsize - 1) & 0xFFFC0000) | SDRAMC_DMRn_V);
asm("nop");
/* Set IP (bit 3) in DACR */
- sdram->dacr0 |= SDRAMC_DARCn_IP;
+ setbits_be32(&sdram->dacr0, SDRAMC_DARCn_IP);
/* Wait 30ns to allow banks to precharge */
for (i = 0; i < 5; i++) {
}
/* Write to this block to initiate precharge */
- *(u32 *) (CFG_SDRAM_BASE) = 0xA5A59696;
+ *(u32 *) (CONFIG_SYS_SDRAM_BASE) = 0xA5A59696;
/* Set RE (bit 15) in DACR */
- sdram->dacr0 |= SDRAMC_DARCn_RE;
+ setbits_be32(&sdram->dacr0, SDRAMC_DARCn_RE);
/* Wait for at least 8 auto refresh cycles to occur */
for (i = 0; i < 0x2000; i++) {
}
/* Finish the configuration by issuing the MRS. */
- sdram->dacr0 |= SDRAMC_DARCn_IMRS;
+ setbits_be32(&sdram->dacr0, SDRAMC_DARCn_IMRS);
asm("nop");
/* Write to the SDRAM Mode Register */
- *(u32 *) (CFG_SDRAM_BASE + 0x400) = 0xA5A59696;
+ *(u32 *) (CONFIG_SYS_SDRAM_BASE + 0x400) = 0xA5A59696;
}
return dramsize;