mirror of https://gitee.com/openkylin/linux.git
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/*
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* Device Tree support for Armada 370 and XP platforms.
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*
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* Copyright (C) 2012 Marvell
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*
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* Lior Amsalem <alior@marvell.com>
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* Gregory CLEMENT <gregory.clement@free-electrons.com>
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* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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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/clk-provider.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <linux/io.h>
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#include <linux/time-armada-370-xp.h>
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#include <linux/dma-mapping.h>
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#include <linux/mbus.h>
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#include <asm/hardware/cache-l2x0.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 "armada-370-xp.h"
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#include "common.h"
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#include "coherency.h"
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static void __init armada_370_xp_map_io(void)
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{
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debug_ll_io_init();
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}
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/*
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* This initialization will be replaced by a DT-based
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* initialization once the mvebu-mbus driver gains DT support.
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*/
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#define ARMADA_370_XP_MBUS_WINS_OFFS 0x20000
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#define ARMADA_370_XP_MBUS_WINS_SIZE 0x100
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#define ARMADA_370_XP_SDRAM_WINS_OFFS 0x20180
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#define ARMADA_370_XP_SDRAM_WINS_SIZE 0x20
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static void __init armada_370_xp_mbus_init(void)
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{
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char *mbus_soc_name;
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struct device_node *dn;
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const __be32 mbus_wins_offs = cpu_to_be32(ARMADA_370_XP_MBUS_WINS_OFFS);
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const __be32 sdram_wins_offs = cpu_to_be32(ARMADA_370_XP_SDRAM_WINS_OFFS);
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if (of_machine_is_compatible("marvell,armada370"))
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mbus_soc_name = "marvell,armada370-mbus";
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else
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mbus_soc_name = "marvell,armadaxp-mbus";
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dn = of_find_node_by_name(NULL, "internal-regs");
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BUG_ON(!dn);
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mvebu_mbus_init(mbus_soc_name,
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of_translate_address(dn, &mbus_wins_offs),
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ARMADA_370_XP_MBUS_WINS_SIZE,
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of_translate_address(dn, &sdram_wins_offs),
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ARMADA_370_XP_SDRAM_WINS_SIZE);
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}
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static void __init armada_370_xp_timer_and_clk_init(void)
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{
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of_clk_init(NULL);
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armada_370_xp_timer_init();
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coherency_init();
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armada_370_xp_mbus_init();
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#ifdef CONFIG_CACHE_L2X0
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l2x0_of_init(0, ~0UL);
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#endif
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}
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static void __init armada_370_xp_dt_init(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 const char * const armada_370_xp_dt_compat[] = {
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"marvell,armada-370-xp",
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NULL,
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};
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DT_MACHINE_START(ARMADA_XP_DT, "Marvell Armada 370/XP (Device Tree)")
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.smp = smp_ops(armada_xp_smp_ops),
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.init_machine = armada_370_xp_dt_init,
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.map_io = armada_370_xp_map_io,
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.init_time = armada_370_xp_timer_and_clk_init,
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.restart = mvebu_restart,
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.dt_compat = armada_370_xp_dt_compat,
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MACHINE_END
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