*
* Copyright (C) 2005-2008 Arthur Shipkowski (art@videon-central.com)
*
- * See file CREDITS for list of people who contributed to this
- * project.
+ * Copyright (C) 2012 Freescale Semiconductor, Inc. All Rights Reserved.
*
- * 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 <common.h>
#include <asm/immap.h>
+#include <asm/io.h>
#define PERIOD 13 /* system bus period in ns */
#define SDRAM_TREFI 7800 /* in ns */
return 0;
};
-long int initdram(int board_type)
+phys_size_t initdram(int board_type)
{
- volatile sdramctrl_t *sdp = (sdramctrl_t *)(MMAP_SDRAM);
- volatile gpio_t *gpio_reg = (gpio_t *)(MMAP_GPIO);
+ sdramctrl_t *sdp = (sdramctrl_t *)(MMAP_SDRAM);
+ gpio_t *gpio_reg = (gpio_t *)(MMAP_GPIO);
- gpio_reg->par_sdram = 0x3FF; /* Enable SDRAM */
+ /* Enable SDRAM */
+ out_be16(&gpio_reg->par_sdram, 0x3FF);
/* Set up chip select */
- sdp->sdbar0 = CFG_SDRAM_BASE;
- sdp->sdbmr0 = MCF_SDRAMC_SDMRn_BAM_32M | MCF_SDRAMC_SDMRn_V;
+ out_be32(&sdp->sdbar0, CONFIG_SYS_SDRAM_BASE);
+ out_be32(&sdp->sdbmr0, MCF_SDRAMC_SDMRn_BAM_32M | MCF_SDRAMC_SDMRn_V);
/* Set up timing */
- sdp->sdcfg1 = 0x83711630;
- sdp->sdcfg2 = 0x46770000;
+ out_be32(&sdp->sdcfg1, 0x83711630);
+ out_be32(&sdp->sdcfg2, 0x46770000);
/* Enable clock */
- sdp->sdcr = MCF_SDRAMC_SDCR_MODE_EN | MCF_SDRAMC_SDCR_CKE;
+ out_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_MODE_EN | MCF_SDRAMC_SDCR_CKE);
/* Set precharge */
- sdp->sdcr |= MCF_SDRAMC_SDCR_IPALL;
+ setbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_IPALL);
/* Dummy write to start SDRAM */
- *((volatile unsigned long *)CFG_SDRAM_BASE) = 0xa5a59696;
+ *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696;
/* Send LEMR */
- sdp->sdmr = MCF_SDRAMC_SDMR_BNKAD_LEMR
- | MCF_SDRAMC_SDMR_AD(0x0)
- | MCF_SDRAMC_SDMR_CMD;
- *((volatile unsigned long *)CFG_SDRAM_BASE) = 0xa5a59696;
+ setbits_be32(&sdp->sdmr,
+ MCF_SDRAMC_SDMR_BNKAD_LEMR | MCF_SDRAMC_SDMR_AD(0x0) |
+ MCF_SDRAMC_SDMR_CMD);
+ *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696;
/* Send LMR */
- sdp->sdmr = 0x058d0000;
- *((volatile unsigned long *)CFG_SDRAM_BASE) = 0xa5a59696;
+ out_be32(&sdp->sdmr, 0x058d0000);
+ *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696;
/* Stop sending commands */
- sdp->sdmr &= ~(MCF_SDRAMC_SDMR_CMD);
+ clrbits_be32(&sdp->sdmr, MCF_SDRAMC_SDMR_CMD);
/* Set precharge */
- sdp->sdcr |= MCF_SDRAMC_SDCR_IPALL;
- *((volatile unsigned long *)CFG_SDRAM_BASE) = 0xa5a59696;
+ setbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_IPALL);
+ *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696;
/* Stop manual precharge, send 2 IREF */
- sdp->sdcr &= ~(MCF_SDRAMC_SDCR_IPALL);
- sdp->sdcr |= MCF_SDRAMC_SDCR_IREF;
- *((volatile unsigned long *)CFG_SDRAM_BASE) = 0xa5a59696;
- *((volatile unsigned long *)CFG_SDRAM_BASE) = 0xa5a59696;
+ clrbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_IPALL);
+ setbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_IREF);
+ *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696;
+ *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696;
+
- /* Write mode register, clear reset DLL */
- sdp->sdmr = 0x018d0000;
- *((volatile unsigned long *)CFG_SDRAM_BASE) = 0xa5a59696;
+ out_be32(&sdp->sdmr, 0x018d0000);
+ *((volatile unsigned long *)CONFIG_SYS_SDRAM_BASE) = 0xa5a59696;
/* Stop sending commands */
- sdp->sdmr &= ~(MCF_SDRAMC_SDMR_CMD);
- sdp->sdcr &= ~(MCF_SDRAMC_SDCR_MODE_EN);
+ clrbits_be32(&sdp->sdmr, MCF_SDRAMC_SDMR_CMD);
+ clrbits_be32(&sdp->sdcr, MCF_SDRAMC_SDCR_MODE_EN);
/* Turn on auto refresh, lock SDMR */
- sdp->sdcr =
+ out_be32(&sdp->sdcr,
MCF_SDRAMC_SDCR_CKE
| MCF_SDRAMC_SDCR_REF
| MCF_SDRAMC_SDCR_MUX(1)
/* 1 added to round up */
| MCF_SDRAMC_SDCR_RCNT((SDRAM_TREFI/(PERIOD*64)) - 1 + 1)
- | MCF_SDRAMC_SDCR_DQS_OE(0x3);
+ | MCF_SDRAMC_SDCR_DQS_OE(0x3));
- return CFG_SDRAM_SIZE * 1024 * 1024;
+ return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
};
int testdram(void)