diff options
Diffstat (limited to 'arch/arm/mach-mx5/mm.c')
-rw-r--r-- | arch/arm/mach-mx5/mm.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/mm.c b/arch/arm/mach-mx5/mm.c new file mode 100644 index 0000000..b7677ef --- /dev/null +++ b/arch/arm/mach-mx5/mm.c @@ -0,0 +1,83 @@ +/* + * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + * + * Create static mapping between physical to virtual memory. + */ + +#include <linux/mm.h> +#include <linux/init.h> + +#include <asm/mach/map.h> + +#include <mach/hardware.h> +#include <mach/common.h> +#include <mach/iomux-v3.h> + +/* + * Define the MX51 memory map. + */ +static struct map_desc mxc_io_desc[] __initdata = { + { + .virtual = MX51_IRAM_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(MX51_IRAM_BASE_ADDR), + .length = MX51_IRAM_SIZE, + .type = MT_DEVICE + }, { + .virtual = MX51_DEBUG_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(MX51_DEBUG_BASE_ADDR), + .length = MX51_DEBUG_SIZE, + .type = MT_DEVICE + }, { + .virtual = MX51_AIPS1_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(MX51_AIPS1_BASE_ADDR), + .length = MX51_AIPS1_SIZE, + .type = MT_DEVICE + }, { + .virtual = MX51_SPBA0_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(MX51_SPBA0_BASE_ADDR), + .length = MX51_SPBA0_SIZE, + .type = MT_DEVICE + }, { + .virtual = MX51_AIPS2_BASE_ADDR_VIRT, + .pfn = __phys_to_pfn(MX51_AIPS2_BASE_ADDR), + .length = MX51_AIPS2_SIZE, + .type = MT_DEVICE + }, +}; + +/* + * 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 mx51_map_io(void) +{ + mxc_set_cpu_type(MXC_CPU_MX51); + mxc_iomux_v3_init(MX51_IO_ADDRESS(MX51_IOMUXC_BASE_ADDR)); + mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG_BASE_ADDR)); + iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc)); +} + +void __init mx51_init_irq(void) +{ + unsigned long tzic_addr; + void __iomem *tzic_virt; + + if (mx51_revision() < MX51_CHIP_REV_2_0) + tzic_addr = MX51_TZIC_BASE_ADDR_TO1; + else + tzic_addr = MX51_TZIC_BASE_ADDR; + + tzic_virt = ioremap(tzic_addr, SZ_16K); + if (!tzic_virt) + panic("unable to map TZIC interrupt controller\n"); + + tzic_init_irq(tzic_virt); +} |