Usama Arif
498d81204f
BugLink: https://bugs.launchpad.net/bugs/2101915
[ Upstream commit b2473a359763e27567993e7d8f37de82f57a0829 ]
__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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
28 lines
685 B
C
28 lines
685 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* OpenRISC prom.c
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*
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* Linux architectural port borrowing liberally from similar works of
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* others. All original copyrights apply as per the original source
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* declaration.
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*
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* Modifications for the OpenRISC architecture:
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* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
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*
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* Architecture specific procedures for creating, accessing and
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* interpreting the device tree.
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*/
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/memblock.h>
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#include <linux/of_fdt.h>
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#include <asm/page.h>
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void __init early_init_devtree(void *params)
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{
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early_init_dt_scan(params, __pa(params));
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memblock_allow_resize();
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}
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