MIPS: Fix typos

Fix typos, most reported by "codespell arch/mips". Only touches comments,
no code changes.

Signed-off-by: Bjorn Helgaas <[email protected]>
Cc: [email protected]
Reviewe

MIPS: Fix typos

Fix typos, most reported by "codespell arch/mips". Only touches comments,
no code changes.

Signed-off-by: Bjorn Helgaas <[email protected]>
Cc: [email protected]
Reviewed-by: Randy Dunlap <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>

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MIPS: Remove dead code in relocate_new_kernel

There are two adjacent "b" instructions, the second one is unreachable,
it is dead code, just remove it.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongso

MIPS: Remove dead code in relocate_new_kernel

There are two adjacent "b" instructions, the second one is unreachable,
it is dead code, just remove it.

Signed-off-by: Tiezhu Yang <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>

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MIPS: fix duplicate definitions for exported symbols

Building with clang-14 fails with:

AS arch/mips/kernel/relocate_kernel.o
<unknown>:0: error: symbol 'kexec_args' is already defined
<unknow

MIPS: fix duplicate definitions for exported symbols

Building with clang-14 fails with:

AS arch/mips/kernel/relocate_kernel.o
<unknown>:0: error: symbol 'kexec_args' is already defined
<unknown>:0: error: symbol 'secondary_kexec_args' is already defined
<unknown>:0: error: symbol 'kexec_start_address' is already defined
<unknown>:0: error: symbol 'kexec_indirection_page' is already defined
<unknown>:0: error: symbol 'relocate_new_kernel_size' is already defined

It turns out EXPORT defined in asm/asm.h expands to a symbol definition,
so there is no need to define these symbols again. Remove duplicated
symbol definitions.

Fixes: 7aa1c8f47e7e ("MIPS: kdump: Add support")
Signed-off-by: Rongwei Zhang <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>

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MIPS: Fix build error due to PTR used in more places

Use PTR_WD instead of PTR to avoid clashes with other parts.

Signed-off-by: Thomas Bogendoerfer <[email protected]>

MIPS: Loongson64: Add kexec/kdump support

Add kexec/kdump support for Loongson64 by:
1, Provide Loongson-specific kexec functions: loongson_kexec_prepare(),
loongson_kexec_shutdown() and loongson

MIPS: Loongson64: Add kexec/kdump support

Add kexec/kdump support for Loongson64 by:
1, Provide Loongson-specific kexec functions: loongson_kexec_prepare(),
loongson_kexec_shutdown() and loongson_crash_shutdown();
2, Provide Loongson-specific assembly code in kexec_smp_wait();

To start Loongson64, The boot CPU needs 3 parameters:
fw_arg0: the number of arguments in cmdline (i.e., argc).
fw_arg1: structure holds cmdline such as "root=/dev/sda1 console=tty"
(i.e., argv).
fw_arg2: environment (i.e., envp, additional boot parameters from LEFI).

Non-boot CPUs do not need one parameter as the IPI mailbox base address.
They query their own IPI mailbox to get PC, SP and GP in a loopi, until
the boot CPU brings them up.

loongson_kexec_prepare(): Setup cmdline for kexec/kdump. The kexec/kdump
cmdline comes from kexec's "append" option string. This structure will
be parsed in fw_init_cmdline() of arch/mips/fw/lib/cmdline.c. Both image
->control_code_page and the cmdline need to be in a safe memory region
(memory allocated by the old kernel may be corrupted by the new kernel).
In order to maintain compatibility for the old firmware, the low 2MB is
reserverd and safe for Loongson. So let KEXEC_CTRL_CODE and KEXEC_ARGV_
ADDR be here. LEFI parameters may be corrupted at runtime, so backup it
at mips_reboot_setup(), and then restore it at loongson_kexec_shutdown()
/loongson_crash_shutdown().

loongson_kexec_shutdown(): Wake up all present CPUs and let them go to
reboot_code_buffer. Pass the kexec parameters to kexec_args.

loongson_crash_shutdown(): Pass the kdump parameters to kexec_args.

The assembly part in kexec_smp_wait provide a routine as BIOS does, in
order to keep secondary CPUs in a querying loop.

The layout of low 2MB memory in our design:
0x80000000, the first MB, the first 64K, Exception vectors
0x80010000, the first MB, the second 64K, STR (suspend) data
0x80020000, the first MB, the third and fourth 64K, UEFI HOB
0x80040000, the first MB, the fifth 64K, RT-Thread for SMC
0x80100000, the second MB, the first 64K, KEXEC code
0x80108000, the second MB, the second 64K, KEXEC data

Cc: Eric Biederman <[email protected]>
Tested-by: Jinyang He <[email protected]>
Signed-off-by: Huacai Chen <[email protected]>
Signed-off-by: Jinyang He <[email protected]>
Signed-off-by: Youling Tang <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230

Based on 2 normalized pattern(s):

this source code is licensed under the gnu general public license
version 2 see the file cop

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230

Based on 2 normalized pattern(s):

this source code is licensed under the gnu general public license
version 2 see the file copying for more details

this source code is licensed under general public license version 2
see

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 52 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Enrico Weigelt <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Alexios Zavras <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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MIPS: kexec: fix typos

Correct a couple of typos within comments in
arch/mips/kernel/relocate_kernel.S.

[[email protected]: Add a commit message.]

Signed-off-by: Yegor Yefremov <yegorslists@goo

MIPS: kexec: fix typos

Correct a couple of typos within comments in
arch/mips/kernel/relocate_kernel.S.

[[email protected]: Add a commit message.]

Signed-off-by: Yegor Yefremov <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/19218/
Signed-off-by: Paul Burton <[email protected]>

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MIPS: Replace add and sub instructions in relocate_kernel.S with addiu

Fixes the assembler errors generated when compiling a MIPS R6 kernel with
CONFIG_KEXEC on, by replacing the offending add and s

MIPS: Replace add and sub instructions in relocate_kernel.S with addiu

Fixes the assembler errors generated when compiling a MIPS R6 kernel with
CONFIG_KEXEC on, by replacing the offending add and sub instructions with
addiu instructions.

Build errors:
arch/mips/kernel/relocate_kernel.S: Assembler messages:
arch/mips/kernel/relocate_kernel.S:27: Error: invalid operands `dadd $16,$16,8'
arch/mips/kernel/relocate_kernel.S:64: Error: invalid operands `dadd $20,$20,8'
arch/mips/kernel/relocate_kernel.S:65: Error: invalid operands `dadd $18,$18,8'
arch/mips/kernel/relocate_kernel.S:66: Error: invalid operands `dsub $22,$22,1'
scripts/Makefile.build:294: recipe for target 'arch/mips/kernel/relocate_kernel.o' failed

Signed-off-by: James Cowgill <[email protected]>
Cc: <[email protected]> # 4.0+
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/10558/
Signed-off-by: Ralf Baechle <[email protected]>

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MIPS: kdump: Skip walking indirection page for crashkernels

KDUMP: skip indirection page, as crashkernel has already copied to destination

[[email protected]: cosmetic changes.]

Signed-off-by: P

MIPS: kdump: Skip walking indirection page for crashkernels

KDUMP: skip indirection page, as crashkernel has already copied to destination

[[email protected]: cosmetic changes.]

Signed-off-by: Prem Mallappa <[email protected]>
Cc: linux-mips <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/5786/
Signed-off-by: Ralf Baechle <[email protected]>

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MIPS: Whitespace cleanup.

Having received another series of whitespace patches I decided to do this
once and for all rather than dealing with this kind of patches trickling
in forever.

Signed-off-b

MIPS: Whitespace cleanup.

Having received another series of whitespace patches I decided to do this
once and for all rather than dealing with this kind of patches trickling
in forever.

Signed-off-by: Ralf Baechle <[email protected]>

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MIPS: Switch remaining assembler PAGE_SIZE users to <asm/asm-offsets.h>.

Signed-off-by: Ralf Baechle <[email protected]>

MIPS: Octeon: Add kexec and kdump support

[[email protected]: Original patch by Maxim Uvarov <[email protected]>
with plenty of further shining, polishing, debugging and testing by me.]

Signed-of

MIPS: Octeon: Add kexec and kdump support

[[email protected]: Original patch by Maxim Uvarov <[email protected]>
with plenty of further shining, polishing, debugging and testing by me.]

Signed-off-by: Maxim Uvarov <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1026/
Signed-off-by: Ralf Baechle <[email protected]>

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MIPS: kdump: Add support

[[email protected]: Original patch by Maxim Uvarov <[email protected]>
with plenty of further shining, polishing, debugging and testing by me.]

Signed-off-by: Maxim Uvaro

MIPS: kdump: Add support

[[email protected]: Original patch by Maxim Uvarov <[email protected]>
with plenty of further shining, polishing, debugging and testing by me.]

Signed-off-by: Maxim Uvarov <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/1025/
Signed-off-by: Ralf Baechle <[email protected]>

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[MIPS] Kexec: Fix several 64-bit bugs.

Signed-off-by: Ralf Baechle <[email protected]>

[MIPS] Add support for kexec

A tiny userland application loading the kernel and invoking kexec_load for
mips is available here:

http://chac.le-poulpe.net/~nico/kexec/kexec-2006-10-18.tar.gz

Signe

[MIPS] Add support for kexec

A tiny userland application loading the kernel and invoking kexec_load for
mips is available here:

http://chac.le-poulpe.net/~nico/kexec/kexec-2006-10-18.tar.gz

Signed-off-by: Ralf Baechle <[email protected]>

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