From 27952014c465eec646157d5d045c084b94e3f2d7 Mon Sep 17 00:00:00 2001 From: Steve Sakoman Date: Thu, 15 Jul 2010 16:19:16 -0400 Subject: ARMV7: Add basic gpmc initialization for OMAP4 This patch adds a gpmc_init function for OMAP4 and adds calls to gpmc_init for existing OMAP4 boards: panda and sdp4430 Signed-off-by: Steve Sakoman Signed-off-by: Sandeep Paulraj --- arch/arm/cpu/armv7/omap4/mem.c | 45 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 arch/arm/cpu/armv7/omap4/mem.c (limited to 'arch/arm/cpu/armv7/omap4/mem.c') diff --git a/arch/arm/cpu/armv7/omap4/mem.c b/arch/arm/cpu/armv7/omap4/mem.c new file mode 100644 index 0000000000..878f0e3042 --- /dev/null +++ b/arch/arm/cpu/armv7/omap4/mem.c @@ -0,0 +1,45 @@ +/* + * (C) Copyright 2010 + * Texas Instruments, + * + * Steve Sakoman + * + * 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 + +struct gpmc *gpmc_cfg; + +/***************************************************** + * gpmc_init(): init gpmc bus + * This code can only be executed from SRAM or SDRAM. + *****************************************************/ +void gpmc_init(void) +{ + gpmc_cfg = (struct gpmc *)GPMC_BASE; + + /* global settings */ + writel(0, &gpmc_cfg->irqenable); /* isr's sources masked */ + writel(0, &gpmc_cfg->timeout_control);/* timeout disable */ + + /* + * Disable the GPMC0 config set by ROM code + * It conflicts with our MPDB (both at 0x08000000) + */ + writel(0, &gpmc_cfg->cs[0].config7); +} -- cgit