mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-01-03 19:53:32 +00:00
b2473a3597
__pa() is only intended to be used for linear map addresses and using
it for initial_boot_params which is in fixmap for arm64 will give an
incorrect value. Hence save the physical address when it is known at
boot time when calling early_init_dt_scan for arm64 and use it at kexec
time instead of converting the virtual address using __pa().
Note that arm64 doesn't need the FDT region reserved in the DT as the
kernel explicitly reserves the passed in FDT. Therefore, only a debug
warning is fixed with this change.
Reported-by: Breno Leitao <leitao@debian.org>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Usama Arif <usamaarif642@gmail.com>
Fixes: ac10be5cdb ("arm64: Use common of_kexec_alloc_and_setup_fdt()")
Link: https://lore.kernel.org/r/20241023171426.452688-1-usamaarif642@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* MIPS support for CONFIG_OF device tree support
|
|
*
|
|
* Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com>
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/export.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/types.h>
|
|
#include <linux/memblock.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_fdt.h>
|
|
#include <linux/of_platform.h>
|
|
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/page.h>
|
|
#include <asm/prom.h>
|
|
|
|
static char mips_machine_name[64] = "Unknown";
|
|
|
|
__init void mips_set_machine_name(const char *name)
|
|
{
|
|
if (name == NULL)
|
|
return;
|
|
|
|
strscpy(mips_machine_name, name, sizeof(mips_machine_name));
|
|
pr_info("MIPS: machine is %s\n", mips_get_machine_name());
|
|
|
|
dump_stack_set_arch_desc(name);
|
|
}
|
|
|
|
char *mips_get_machine_name(void)
|
|
{
|
|
return mips_machine_name;
|
|
}
|
|
|
|
#ifdef CONFIG_USE_OF
|
|
|
|
void __init __dt_setup_arch(void *bph)
|
|
{
|
|
if (!early_init_dt_scan(bph, __pa(bph)))
|
|
return;
|
|
|
|
mips_set_machine_name(of_flat_dt_get_machine_name());
|
|
}
|
|
|
|
int __init __dt_register_buses(const char *bus0, const char *bus1)
|
|
{
|
|
static struct of_device_id of_ids[3];
|
|
|
|
if (!of_have_populated_dt())
|
|
panic("device tree not present");
|
|
|
|
strscpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible));
|
|
if (bus1) {
|
|
strscpy(of_ids[1].compatible, bus1,
|
|
sizeof(of_ids[1].compatible));
|
|
}
|
|
|
|
if (of_platform_populate(NULL, of_ids, NULL, NULL))
|
|
panic("failed to populate DT");
|
|
|
|
return 0;
|
|
}
|
|
|
|
void __weak __init device_tree_init(void)
|
|
{
|
|
unflatten_and_copy_device_tree();
|
|
}
|
|
|
|
#endif
|