forked from Minki/linux
31e4001d2e
This patch adds board file that will be used to boot S3C64xx-based boards using Device Tree. Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
/*
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* Samsung's S3C64XX flattened device tree enabled machine
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*
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* Copyright (c) 2013 Tomasz Figa <tomasz.figa@gmail.com>
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clk-provider.h>
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#include <linux/irqchip.h>
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#include <linux/of_platform.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/system_misc.h>
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#include <plat/cpu.h>
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#include <plat/watchdog-reset.h>
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#include <mach/map.h>
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#include "common.h"
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/*
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* IO mapping for shared system controller IP.
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*
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* FIXME: Make remaining drivers use dynamic mapping.
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*/
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static struct map_desc s3c64xx_dt_iodesc[] __initdata = {
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{
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.virtual = (unsigned long)S3C_VA_SYS,
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.pfn = __phys_to_pfn(S3C64XX_PA_SYSCON),
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.length = SZ_4K,
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.type = MT_DEVICE,
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},
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};
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static void __init s3c64xx_dt_map_io(void)
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{
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debug_ll_io_init();
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iotable_init(s3c64xx_dt_iodesc, ARRAY_SIZE(s3c64xx_dt_iodesc));
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s3c64xx_init_cpu();
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if (!soc_is_s3c64xx())
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panic("SoC is not S3C64xx!");
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}
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static void __init s3c64xx_dt_init_irq(void)
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{
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of_clk_init(NULL);
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samsung_wdt_reset_of_init();
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irqchip_init();
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};
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static void __init s3c64xx_dt_init_machine(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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static void s3c64xx_dt_restart(enum reboot_mode mode, const char *cmd)
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{
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if (mode != REBOOT_SOFT)
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samsung_wdt_reset();
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/* if all else fails, or mode was for soft, jump to 0 */
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soft_restart(0);
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}
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static char const *s3c64xx_dt_compat[] __initdata = {
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"samsung,s3c6400",
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"samsung,s3c6410",
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NULL
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};
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DT_MACHINE_START(S3C6400_DT, "Samsung S3C64xx (Flattened Device Tree)")
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/* Maintainer: Tomasz Figa <tomasz.figa@gmail.com> */
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.dt_compat = s3c64xx_dt_compat,
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.map_io = s3c64xx_dt_map_io,
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.init_irq = s3c64xx_dt_init_irq,
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.init_machine = s3c64xx_dt_init_machine,
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.restart = s3c64xx_dt_restart,
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MACHINE_END
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