From 05316f8ece8206339a208ec052f039cd0f7ca922 Mon Sep 17 00:00:00 2001 From: TsiChung Liew Date: Mon, 11 Aug 2008 13:41:49 +0000 Subject: ColdFire: Add M54451EVB platform support for MCF5445x Signed-off-by: TsiChung Liew --- board/freescale/m54451evb/m54451evb.c | 108 ++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 board/freescale/m54451evb/m54451evb.c (limited to 'board/freescale/m54451evb/m54451evb.c') diff --git a/board/freescale/m54451evb/m54451evb.c b/board/freescale/m54451evb/m54451evb.c new file mode 100644 index 0000000000..5b33a8358e --- /dev/null +++ b/board/freescale/m54451evb/m54451evb.c @@ -0,0 +1,108 @@ +/* + * (C) Copyright 2000-2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Copyright (C) 2004-2008 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 +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +int checkboard(void) +{ + /* + * need to to: + * Check serial flash size. if 2mb evb, else 8mb demo + */ + puts("Board: "); + puts("Freescale M54451 EVB\n"); + return 0; +}; + +phys_size_t initdram(int board_type) +{ + u32 dramsize; +#ifdef CONFIG_CF_SBF + /* + * Serial Boot: The dram is already initialized in start.S + * only require to return DRAM size + */ + dramsize = CFG_SDRAM_SIZE * 0x100000 >> 1; +#else + volatile sdramc_t *sdram = (volatile sdramc_t *)(MMAP_SDRAM); + volatile gpio_t *gpio = (volatile gpio_t *)(MMAP_GPIO); + u32 i; + + dramsize = CFG_SDRAM_SIZE * 0x100000; + + if ((sdram->sdcfg1 == CFG_SDRAM_CFG1) && + (sdram->sdcfg2 == CFG_SDRAM_CFG2)) + return dramsize; + + for (i = 0x13; i < 0x20; i++) { + if (dramsize == (1 << i)) + break; + } + i--; + + gpio->mscr_sdram = 0x44; + + sdram->sdcs0 = (CFG_SDRAM_BASE | i); + + sdram->sdcfg1 = CFG_SDRAM_CFG1; + sdram->sdcfg2 = CFG_SDRAM_CFG2; + + udelay(200); + + /* Issue PALL */ + sdram->sdcr = CFG_SDRAM_CTRL | 2; + __asm__("nop"); + + /* Perform two refresh cycles */ + sdram->sdcr = CFG_SDRAM_CTRL | 4; + __asm__("nop"); + sdram->sdcr = CFG_SDRAM_CTRL | 4; + __asm__("nop"); + + /* Issue LEMR */ + sdram->sdmr = CFG_SDRAM_MODE; + __asm__("nop"); + sdram->sdmr = CFG_SDRAM_EMOD; + __asm__("nop"); + + sdram->sdcr = (CFG_SDRAM_CTRL & ~0x80000000) | 0x10000000; + + udelay(100); +#endif + return (dramsize); +}; + +int testdram(void) +{ + /* TODO: XXX XXX XXX */ + printf("DRAM test not implemented!\n"); + + return (0); +} -- cgit v1.2.1