diff options
Diffstat (limited to 'board/freescale/m5235evb/m5235evb.c')
| -rw-r--r-- | board/freescale/m5235evb/m5235evb.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/board/freescale/m5235evb/m5235evb.c b/board/freescale/m5235evb/m5235evb.c index b9e61269c7..e9a568efb3 100644 --- a/board/freescale/m5235evb/m5235evb.c +++ b/board/freescale/m5235evb/m5235evb.c @@ -2,7 +2,7 @@ * (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 @@ -27,6 +27,7 @@ #include <config.h> #include <common.h> #include <asm/immap.h> +#include <asm/io.h> DECLARE_GLOBAL_DATA_PTR; @@ -39,8 +40,8 @@ int checkboard(void) 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; /* @@ -48,14 +49,15 @@ phys_size_t initdram(int board_type) * 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 = CONFIG_SYS_SDRAM_SIZE * 0x100000; for (i = 0x13; i < 0x20; i++) { @@ -64,25 +66,28 @@ phys_size_t initdram(int board_type) } i--; - if (!(sdram->dacr0 & SDRAMC_DARCn_RE)) { + 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(CONFIG_SYS_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++) { @@ -93,7 +98,7 @@ phys_size_t initdram(int board_type) *(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++) { @@ -101,7 +106,7 @@ phys_size_t initdram(int board_type) } /* 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 */ |