205 lines
4.5 KiB
C
205 lines
4.5 KiB
C
/*
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* Emma Mobile EV2 processor support
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*
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* Copyright (C) 2012 Magnus Damm
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/input.h>
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <mach/common.h>
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#include <mach/emev2.h>
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#include <mach/irqs.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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#include <asm/hardware/gic.h>
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static struct map_desc emev2_io_desc[] __initdata = {
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#ifdef CONFIG_SMP
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/* 128K entity map for 0xe0100000 (SMU) */
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{
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.virtual = 0xe0100000,
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.pfn = __phys_to_pfn(0xe0100000),
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.length = SZ_128K,
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.type = MT_DEVICE
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},
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/* 2M mapping for SCU + L2 controller */
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{
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.virtual = 0xf0000000,
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.pfn = __phys_to_pfn(0x1e000000),
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.length = SZ_2M,
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.type = MT_DEVICE
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},
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#endif
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};
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void __init emev2_map_io(void)
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{
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iotable_init(emev2_io_desc, ARRAY_SIZE(emev2_io_desc));
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}
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/* UART */
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static struct resource uart0_resources[] = {
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[0] = {
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.start = 0xe1020000,
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.end = 0xe1020037,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 40,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device uart0_device = {
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.name = "serial8250-em",
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.id = 0,
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.num_resources = ARRAY_SIZE(uart0_resources),
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.resource = uart0_resources,
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};
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static struct resource uart1_resources[] = {
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[0] = {
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.start = 0xe1030000,
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.end = 0xe1030037,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 41,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device uart1_device = {
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.name = "serial8250-em",
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.id = 1,
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.num_resources = ARRAY_SIZE(uart1_resources),
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.resource = uart1_resources,
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};
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static struct resource uart2_resources[] = {
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[0] = {
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.start = 0xe1040000,
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.end = 0xe1040037,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 42,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device uart2_device = {
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.name = "serial8250-em",
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.id = 2,
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.num_resources = ARRAY_SIZE(uart2_resources),
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.resource = uart2_resources,
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};
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static struct resource uart3_resources[] = {
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[0] = {
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.start = 0xe1050000,
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.end = 0xe1050037,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 43,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device uart3_device = {
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.name = "serial8250-em",
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.id = 3,
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.num_resources = ARRAY_SIZE(uart3_resources),
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.resource = uart3_resources,
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};
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/* STI */
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static struct resource sti_resources[] = {
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[0] = {
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.name = "STI",
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.start = 0xe0180000,
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.end = 0xe0180053,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 157,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device sti_device = {
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.name = "em_sti",
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.id = 0,
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.resource = sti_resources,
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.num_resources = ARRAY_SIZE(sti_resources),
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};
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static struct platform_device *emev2_early_devices[] __initdata = {
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&uart0_device,
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&uart1_device,
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&uart2_device,
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&uart3_device,
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};
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static struct platform_device *emev2_late_devices[] __initdata = {
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&sti_device,
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};
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void __init emev2_add_standard_devices(void)
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{
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emev2_clock_init();
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platform_add_devices(emev2_early_devices,
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ARRAY_SIZE(emev2_early_devices));
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platform_add_devices(emev2_late_devices,
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ARRAY_SIZE(emev2_late_devices));
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}
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void __init emev2_add_early_devices(void)
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{
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shmobile_setup_delay(533, 1, 3); /* Cortex-A9 @ 533MHz */
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early_platform_add_devices(emev2_early_devices,
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ARRAY_SIZE(emev2_early_devices));
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/* setup early console here as well */
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shmobile_setup_console();
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}
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void __init emev2_init_irq(void)
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{
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void __iomem *gic_dist_base;
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void __iomem *gic_cpu_base;
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/* Static mappings, never released */
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gic_dist_base = ioremap(0xe0028000, PAGE_SIZE);
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gic_cpu_base = ioremap(0xe0020000, PAGE_SIZE);
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BUG_ON(!gic_dist_base || !gic_cpu_base);
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/* Use GIC to handle interrupts */
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gic_init(0, 29, gic_dist_base, gic_cpu_base);
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}
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