2012-06-14 01:01:28 +08:00
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/*
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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/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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2012-11-17 22:22:24 +08:00
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#include <linux/clk/mvebu.h>
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2012-10-26 20:30:46 +08:00
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#include <linux/dma-mapping.h>
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2013-03-22 00:59:15 +08:00
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#include <linux/mbus.h>
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2013-04-10 05:26:14 +08:00
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#include <asm/hardware/cache-l2x0.h>
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2012-06-14 01:01:28 +08:00
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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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2012-09-03 03:57:33 +08:00
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#include "armada-370-xp.h"
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2012-06-14 01:01:28 +08:00
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#include "common.h"
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2012-11-15 05:51:08 +08:00
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#include "coherency.h"
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2012-06-14 01:01:28 +08:00
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static struct map_desc armada_370_xp_io_desc[] __initdata = {
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{
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2012-09-11 20:27:22 +08:00
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.virtual = (unsigned long) ARMADA_370_XP_REGS_VIRT_BASE,
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2012-06-14 01:01:28 +08:00
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.pfn = __phys_to_pfn(ARMADA_370_XP_REGS_PHYS_BASE),
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.length = ARMADA_370_XP_REGS_SIZE,
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.type = MT_DEVICE,
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},
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};
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2013-05-21 18:33:28 +08:00
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static void __init armada_370_xp_map_io(void)
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2012-06-14 01:01:28 +08:00
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{
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iotable_init(armada_370_xp_io_desc, ARRAY_SIZE(armada_370_xp_io_desc));
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}
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2013-05-21 18:33:28 +08:00
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static void __init armada_370_xp_timer_and_clk_init(void)
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2012-11-17 22:22:24 +08:00
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{
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arm: mvebu: move cache and mvebu-mbus initialization later
Current, the L2 cache and the mvebu-mbus drivers are initialized at
->init_early() time. However, at ->init_early() time, ioremap() only
works if a static I/O mapping has already been put in place. If it's
not the case, it tries to do a memory allocation with kmalloc() which
is not possible so early at this stage of the initialization.
Since we want to get rid of the static I/O mapping, we cannot
initialize the L2 cache driver and the mvebu-mbus driver so early. So,
we move their initialization to the ->init_time() level, which is
slightly later (so ioremap() works properly), but sufficiently early
to be before the call of the ->smp_prepare_cpus() hook, which creates
an address decoding window for the BootROM, which requires the
mvebu-mbus driver to be properly initialized.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-06-05 15:04:56 +08:00
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char *mbus_soc_name;
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2012-11-17 22:22:24 +08:00
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mvebu_clocks_init();
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armada_370_xp_timer_init();
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2013-06-05 15:04:55 +08:00
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coherency_init();
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2013-03-22 00:59:15 +08:00
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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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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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mvebu_mbus_init(mbus_soc_name,
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ARMADA_370_XP_MBUS_WINS_BASE,
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ARMADA_370_XP_MBUS_WINS_SIZE,
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ARMADA_370_XP_SDRAM_WINS_BASE,
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ARMADA_370_XP_SDRAM_WINS_SIZE);
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2013-05-08 02:22:14 +08:00
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2013-04-10 05:26:14 +08:00
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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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2012-10-26 20:30:46 +08:00
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}
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2012-06-14 01:01:28 +08:00
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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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2012-11-09 23:26:26 +08:00
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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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2012-06-14 01:01:28 +08:00
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NULL,
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};
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2012-11-12 19:03:38 +08:00
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DT_MACHINE_START(ARMADA_XP_DT, "Marvell Armada 370/XP (Device Tree)")
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2012-11-15 05:51:08 +08:00
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.smp = smp_ops(armada_xp_smp_ops),
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2012-06-14 01:01:28 +08:00
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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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2012-11-09 03:40:59 +08:00
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.init_time = armada_370_xp_timer_and_clk_init,
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2012-06-14 01:01:28 +08:00
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.restart = mvebu_restart,
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2012-11-09 23:26:26 +08:00
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.dt_compat = armada_370_xp_dt_compat,
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2012-06-14 01:01:28 +08:00
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MACHINE_END
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