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7e8edf55cf
The KS2 boot monitor supports PSCI commands. These are already defined in DT for KS2. We can drop this platform override and remove related code without changing SMP. Do this here. Signed-off-by: Andrew Davis <afd@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Link: https://lore.kernel.org/r/20221026145033.17905-1-afd@ti.com
108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Keystone2 based boards and SOC related code.
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*
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* Copyright 2013 Texas Instruments, Inc.
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* Cyril Chemparathy <cyril@ti.com>
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* Santosh Shilimkar <santosh.shillimkar@ti.com>
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*/
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#include <linux/io.h>
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#include <linux/of.h>
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#include <linux/dma-map-ops.h>
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#include <linux/init.h>
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#include <linux/of_platform.h>
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#include <linux/of_address.h>
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#include <linux/memblock.h>
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#include <asm/setup.h>
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#include <asm/mach/map.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <asm/memory.h>
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#include "memory.h"
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#include "keystone.h"
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#ifdef CONFIG_ARM_LPAE
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static int keystone_platform_notifier(struct notifier_block *nb,
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unsigned long event, void *data)
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{
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struct device *dev = data;
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if (event != BUS_NOTIFY_ADD_DEVICE)
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return NOTIFY_DONE;
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if (!dev)
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return NOTIFY_BAD;
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if (!dev->of_node) {
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int ret = dma_direct_set_offset(dev, KEYSTONE_HIGH_PHYS_START,
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KEYSTONE_LOW_PHYS_START,
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KEYSTONE_HIGH_PHYS_SIZE);
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dev_err(dev, "set dma_offset%08llx%s\n",
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KEYSTONE_HIGH_PHYS_START - KEYSTONE_LOW_PHYS_START,
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ret ? " failed" : "");
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}
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return NOTIFY_OK;
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}
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static struct notifier_block platform_nb = {
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.notifier_call = keystone_platform_notifier,
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};
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#endif /* CONFIG_ARM_LPAE */
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static void __init keystone_init(void)
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{
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#ifdef CONFIG_ARM_LPAE
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if (PHYS_OFFSET >= KEYSTONE_HIGH_PHYS_START)
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bus_register_notifier(&platform_bus_type, &platform_nb);
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#endif
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keystone_pm_runtime_init();
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}
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static long long __init keystone_pv_fixup(void)
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{
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long long offset;
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u64 mem_start, mem_end;
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mem_start = memblock_start_of_DRAM();
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mem_end = memblock_end_of_DRAM();
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/* nothing to do if we are running out of the <32-bit space */
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if (mem_start >= KEYSTONE_LOW_PHYS_START &&
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mem_end <= KEYSTONE_LOW_PHYS_END)
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return 0;
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if (mem_start < KEYSTONE_HIGH_PHYS_START ||
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mem_end > KEYSTONE_HIGH_PHYS_END) {
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pr_crit("Invalid address space for memory (%08llx-%08llx)\n",
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mem_start, mem_end);
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return 0;
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}
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offset = KEYSTONE_HIGH_PHYS_START - KEYSTONE_LOW_PHYS_START;
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/* Populate the arch idmap hook */
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arch_phys_to_idmap_offset = -offset;
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return offset;
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}
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static const char *const keystone_match[] __initconst = {
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"ti,k2hk",
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"ti,k2e",
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"ti,k2l",
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"ti,k2g",
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"ti,keystone",
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NULL,
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};
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DT_MACHINE_START(KEYSTONE, "Keystone")
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#if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
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.dma_zone_size = SZ_2G,
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#endif
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.init_machine = keystone_init,
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.dt_compat = keystone_match,
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.pv_fixup = keystone_pv_fixup,
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MACHINE_END
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