121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
*
|
|
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
|
|
* Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
|
|
* Copyright (C) 2013 John Crispin <john@phrozen.org>
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/export.h>
|
|
#include <linux/init.h>
|
|
#include <linux/sizes.h>
|
|
#include <linux/of_fdt.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/memblock.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_address.h>
|
|
|
|
#include <asm/reboot.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/addrspace.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/mach-ralink/ralink_regs.h>
|
|
|
|
#include "common.h"
|
|
|
|
__iomem void *rt_sysc_membase;
|
|
__iomem void *rt_memc_membase;
|
|
EXPORT_SYMBOL_GPL(rt_sysc_membase);
|
|
|
|
static const struct of_device_id mtmips_memc_match[] = {
|
|
{ .compatible = "mediatek,mt7621-memc" },
|
|
{ .compatible = "ralink,mt7620a-memc" },
|
|
{ .compatible = "ralink,rt2880-memc" },
|
|
{ .compatible = "ralink,rt3050-memc" },
|
|
{ .compatible = "ralink,rt3883-memc" },
|
|
{}
|
|
};
|
|
|
|
static const struct of_device_id mtmips_sysc_match[] = {
|
|
{ .compatible = "mediatek,mt7621-sysc" },
|
|
{ .compatible = "ralink,mt7620-sysc" },
|
|
{ .compatible = "ralink,mt7628-sysc" },
|
|
{ .compatible = "ralink,mt7688-sysc" },
|
|
{ .compatible = "ralink,rt2880-sysc" },
|
|
{ .compatible = "ralink,rt3050-sysc" },
|
|
{ .compatible = "ralink,rt3052-sysc" },
|
|
{ .compatible = "ralink,rt3352-sysc" },
|
|
{ .compatible = "ralink,rt3883-sysc" },
|
|
{ .compatible = "ralink,rt5350-sysc" },
|
|
{}
|
|
};
|
|
|
|
static __iomem void *
|
|
mtmips_of_remap_node(const struct of_device_id *match, const char *type)
|
|
{
|
|
struct resource res;
|
|
struct device_node *np;
|
|
|
|
np = of_find_matching_node(NULL, match);
|
|
if (!np)
|
|
panic("Failed to find %s controller node", type);
|
|
|
|
if (of_address_to_resource(np, 0, &res))
|
|
panic("Failed to get resource for %s node", np->name);
|
|
|
|
if (!request_mem_region(res.start,
|
|
resource_size(&res),
|
|
res.name))
|
|
panic("Failed to request resources for %s node", np->name);
|
|
|
|
of_node_put(np);
|
|
|
|
return ioremap(res.start, resource_size(&res));
|
|
}
|
|
|
|
void __init ralink_of_remap(void)
|
|
{
|
|
rt_sysc_membase = mtmips_of_remap_node(mtmips_sysc_match, "system");
|
|
rt_memc_membase = mtmips_of_remap_node(mtmips_memc_match, "memory");
|
|
|
|
if (!rt_sysc_membase || !rt_memc_membase)
|
|
panic("Failed to remap core resources");
|
|
}
|
|
|
|
void __init plat_mem_setup(void)
|
|
{
|
|
void *dtb;
|
|
|
|
set_io_port_base(KSEG1);
|
|
|
|
/*
|
|
* Load the builtin devicetree. This causes the chosen node to be
|
|
* parsed resulting in our memory appearing.
|
|
*/
|
|
dtb = get_fdt();
|
|
__dt_setup_arch(dtb);
|
|
|
|
if (early_init_dt_scan_memory())
|
|
return;
|
|
|
|
if (soc_info.mem_detect)
|
|
soc_info.mem_detect();
|
|
else if (soc_info.mem_size)
|
|
memblock_add(soc_info.mem_base, soc_info.mem_size * SZ_1M);
|
|
else
|
|
detect_memory_region(soc_info.mem_base,
|
|
soc_info.mem_size_min * SZ_1M,
|
|
soc_info.mem_size_max * SZ_1M);
|
|
}
|
|
|
|
static int __init plat_of_setup(void)
|
|
{
|
|
__dt_register_buses(soc_info.compatible, "palmbus");
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(plat_of_setup);
|