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/*
* Copyright (C) 1999,2000 Arm Limited
* Copyright (C) 2000 Deep Blue Solutions Ltd
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
* Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
* - add MX31 specific definitions
*
* 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.
*/
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/err.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>
#include <asm/hardware/cache-l2x0.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-v3.h>
/*!
* @file mm.c
*
* @brief This file creates static virtual to physical mappings, common to all MX3 boards.
*
* @ingroup Memory
*/
/*!
* This table defines static virtual address mappings for I/O regions.
* These are the mappings common across all MX3 boards.
*/
static struct map_desc mxc_io_desc[] __initdata = {
{
.virtual = MX3x_X_MEMC_BASE_ADDR_VIRT,
.pfn = __phys_to_pfn(MX3x_X_MEMC_BASE_ADDR),
.length = MX3x_X_MEMC_SIZE,
.type = MT_DEVICE
}, {
.virtual = MX3x_AVIC_BASE_ADDR_VIRT,
.pfn = __phys_to_pfn(MX3x_AVIC_BASE_ADDR),
.length = MX3x_AVIC_SIZE,
.type = MT_DEVICE_NONSHARED
}, {
.virtual = MX3x_AIPS1_BASE_ADDR_VIRT,
.pfn = __phys_to_pfn(MX3x_AIPS1_BASE_ADDR),
.length = MX3x_AIPS1_SIZE,
.type = MT_DEVICE_NONSHARED
}, {
.virtual = MX3x_AIPS2_BASE_ADDR_VIRT,
.pfn = __phys_to_pfn(MX3x_AIPS2_BASE_ADDR),
.length = MX3x_AIPS2_SIZE,
.type = MT_DEVICE_NONSHARED
}, {
.virtual = MX3x_SPBA0_BASE_ADDR_VIRT,
.pfn = __phys_to_pfn(MX3x_SPBA0_BASE_ADDR),
.length = MX3x_SPBA0_SIZE,
.type = MT_DEVICE_NONSHARED
},
};
/*!
* This function initializes the memory map. It is called during the
* system startup to create static physical to virtual memory mappings
* for the IO modules.
*/
void __init mx31_map_io(void)
{
mxc_set_cpu_type(MXC_CPU_MX31);
mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
}
#ifdef CONFIG_ARCH_MX35
void __init mx35_map_io(void)
{
mxc_set_cpu_type(MXC_CPU_MX35);
mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR));
mxc_arch_reset_init(MX35_IO_ADDRESS(MX3x_WDOG_BASE_ADDR));
iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
}
#endif
int imx3x_register_gpios(void);
void __init mx31_init_irq(void)
{
mxc_init_irq(MX31_IO_ADDRESS(MX3x_AVIC_BASE_ADDR));
imx3x_register_gpios();
}
void __init mx35_init_irq(void)
{
mx31_init_irq();
}
#ifdef CONFIG_CACHE_L2X0
static int mxc_init_l2x0(void)
{
void __iomem *l2x0_base;
void __iomem *clkctl_base;
/*
* First of all, we must repair broken chip settings. There are some
* i.MX35 CPUs in the wild, comming with bogus L2 cache settings. These
* misconfigured CPUs will run amok immediately when the L2 cache gets enabled.
* Workaraound is to setup the correct register setting prior enabling the
* L2 cache. This should not hurt already working CPUs, as they are using the
* same value
*/
#define L2_MEM_VAL 0x10
clkctl_base = ioremap(MX35_CLKCTL_BASE_ADDR, 4096);
if (clkctl_base != NULL) {
writel(0x00000515, clkctl_base + L2_MEM_VAL);
iounmap(clkctl_base);
} else {
pr_err("L2 cache: Cannot fix timing. Trying to continue without\n");
}
l2x0_base = ioremap(MX3x_L2CC_BASE_ADDR, 4096);
if (IS_ERR(l2x0_base)) {
printk(KERN_ERR "remapping L2 cache area failed with %ld\n",
PTR_ERR(l2x0_base));
return 0;
}
l2x0_init(l2x0_base, 0x00030024, 0x00000000);
return 0;
}
arch_initcall(mxc_init_l2x0);
#endif
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