forked from Minki/linux
48ca54e391
In plat_of_remap_node(), plat_of_remap_node() will return a node pointer with refcount incremented. We should use of_node_put() when it is not used anymore. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
90 lines
1.9 KiB
C
90 lines
1.9 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_platform.h>
|
|
#include <linux/of_address.h>
|
|
|
|
#include <asm/reboot.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/addrspace.h>
|
|
#include <asm/prom.h>
|
|
|
|
#include "common.h"
|
|
|
|
__iomem void *rt_sysc_membase;
|
|
__iomem void *rt_memc_membase;
|
|
EXPORT_SYMBOL_GPL(rt_sysc_membase);
|
|
|
|
__iomem void *plat_of_remap_node(const char *node)
|
|
{
|
|
struct resource res;
|
|
struct device_node *np;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, node);
|
|
if (!np)
|
|
panic("Failed to find %s node", node);
|
|
|
|
if (of_address_to_resource(np, 0, &res))
|
|
panic("Failed to get resource for %s", node);
|
|
|
|
of_node_put(np);
|
|
|
|
if (!request_mem_region(res.start,
|
|
resource_size(&res),
|
|
res.name))
|
|
panic("Failed to request resources for %s", node);
|
|
|
|
return ioremap(res.start, resource_size(&res));
|
|
}
|
|
|
|
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");
|
|
|
|
/* make sure that the reset controller is setup early */
|
|
ralink_rst_init();
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(plat_of_setup);
|