The CONFIG_MIPS_MACHINE option is dead code that hasn't been used in
years. The Kconfig option is not selected anywhere, and the
<asm/mips_machine.h> is not included anywhere either.

To make things worse, for years it co-existed with a separate MIPS
machine implementation as <asm/machine.h>. The two defined the
'mips_machine' structure with different fields, and the 'MIPS_MACHINE'
macro with different parameters. The two used the same memory area
(defined by the linker script) to store data, and you could totally use
the two at the same time for all kinds of funny results.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Since commit 3a77e0d7 ("MIPS: ath79: drop machfiles"), this header
is not used anymore.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Clean up cpu-feature-overrides, which only repeat the default.
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Use 0 as the align parameter in memblock_find_in_range() is
incorrect when we reserve memory for Crash kernel.

The environment as follows:
[    0.000000] MIPS: machine is loongson,loongson64c-4core-rs780e
...
[    1.951016]     crashkernel=64M@128M

The warning as follows:
[    0.000000] Invalid memory region reserved for crash kernel

And the iomem as follows:
00200000-0effffff : System RAM
  04000000-0484009f : Kernel code
  048400a0-04ad7fff : Kernel data
  04b40000-05c4c6bf : Kernel bss
1a000000-1bffffff : pci@1a000000
...

The align parameter may be finally used by round_down() or round_up().
Like the following call tree:

mips-next: mm/memblock.c

memblock_find_in_range
└── memblock_find_in_range_node
    ├── __memblock_find_range_bottom_up
    │   └── round_up
    └── __memblock_find_range_top_down
        └── round_down
\#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
\#define round_down(x, y) ((x) & ~__round_mask(x, y))
\#define __round_mask(x, y) ((__typeof__(x))((y)-1))

The round_down(or round_up)'s second parameter must be a power of 2.
If the second parameter is 0, it both will return 0.

Use 1 as the parameter to fix the bug and the iomem as follows:
00200000-0effffff : System RAM
  04000000-0484009f : Kernel code
  048400a0-04ad7fff : Kernel data
  04b40000-05c4c6bf : Kernel bss
  08000000-0bffffff : Crash kernel
1a000000-1bffffff : pci@1a000000
...
Signed-off-by: NJinyang He <hejinyang@loongson.cn>
Reviewed-by: NJiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Now CPU#0 is not hotpluggable on MIPS, so prevent to create /sys/devices
/system/cpu/cpu0/online which confuses some user-space tools.

Cc: stable@vger.kernel.org
Signed-off-by: NHuacai Chen <chenhc@lemote.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Add a devicetree node for the Image Processing Unit (IPU) found in the
JZ4725B. Connect it with graph nodes to the LCD node. The LCD driver
will expect the IPU node to be accessed through graph port #8, as stated
in the bindings documentation.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Delete the repeated word "as".
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Delete the repeated words "Returns" and convert to kernel-doc
notation by adding a ':'.
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Delete the repeated word "command".
Delete the repeated words "returns" and convert to kernel-doc notation
by adding a ':'.
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Delete the repeated word "the".
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Delete the repeated word "Returns".
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Delete the repeated word "on".
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

It references __initdata and is called only from an __init function:
trap_init. This avoids section mismatches (which I am seeing with gcc
10).
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

There are some CFE variants that start with 'cfe-vd' instead of 'cfe-v', such
as the one used in the Huawei HG556a: "cfe-vd081.5003". In this case, the CFE
version is stored as is (string vs number bytes).

Some newer devices have an additional version number, such as the Comtrend
VR-3032u: "1.0.38-112.118-11".

Finally, print the string as is if the version doesn't start with "cfe-v" or
"cfe-vd", but starts with "cfe-".
Signed-off-by: NÁlvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

1.Add "PRID_COMP_INGENIC_13" and "PRID_IMP_XBURST2" for X2000.
2.Add X2000 system type for cat /proc/cpuinfo to give out X2000.
Signed-off-by: N周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

if of_find_device_by_node() succeed, dwc3_octeon_device_init() doesn't have
a corresponding put_device(). Thus add put_device() to fix the exception
handling for this function implementation.

Fixes: 93e502b3 ("MIPS: OCTEON: Platform support for OCTEON III USB controller")
Signed-off-by: NYu Kuai <yukuai3@huawei.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

paravirt machine was introduced for Cavium's partial virtualization
technology, however, it's host side support and QEMU support never
landed in upstream.

As Cavium was acquired by Marvel and they have no intention to maintain
their MIPS product line, also paravirt is unlikely to be utilized by
community users, it's time to retire it if nobody steps in to maintain
it.
Signed-off-by: NJiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Add Thomas and myself as maintainers of the MIPS CPU and GIC IRQchip, MIPS
GIC timer and MIPS CPS CPUidle drivers.
Signed-off-by: NSerge Semin <Sergey.Semin@baikalelectronics.ru>
Acked-by: NMarc Zyngier <maz@kernel.org>
Acked-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

CDMM may be available not only on MIPS R2 architectures, but also on
newer MIPS R5 chips. For instance our P5600 chip has one. Let's mark
the CDMM bus being supported for that MIPS arch too.
Signed-off-by: NSerge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Since having and mapping the CDMM block is platform specific, then
instead of just returning a zero-address, lets make the default CDMM
base address search method (mips_cdmm_phys_base()) to do something
useful. For instance to find the address in a dedicated dtb-node in
order to support of-based platforms by default.
Signed-off-by: NSerge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

It's a Common Device Memory Map controller embedded into the MIPS IP
cores, which dts node is supposed to have compatible and reg properties.
Signed-off-by: NSerge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Modern device tree bindings are supposed to be created as YAML-files
in accordance with DT schema. This commit replaces MIPS GIC legacy bare
text binding with YAML file. As before the binding file states that the
corresponding dts node is supposed to be compatible with MIPS Global
Interrupt Controller indicated by the "mti,gic" compatible string and
to provide a mandatory interrupt-controller and '#interrupt-cells'
properties. There might be optional registers memory range,
"mti,reserved-cpu-vectors" and "mti,reserved-ipi-vectors" properties
specified.

MIPS GIC also includes a free-running global timer, per-CPU count/compare
timers, and a watchdog. Since currently the GIC Timer is only supported the
DT schema expects an IRQ and clock-phandler charged timer sub-node with
"mti,mips-gic-timer" compatible string.
Signed-off-by: NSerge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

It's a Cluster Power Controller embedded into the MIPS IP cores.
Currently the corresponding dts node is supposed to have compatible
and reg properties.
Signed-off-by: NSerge Semin <Sergey.Semin@baikalelectronics.ru>
Reviewed-by: NRob Herring <robh@kernel.org>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

In the MIPS architecture, we should clear the security-relevant
flag READ_IMPLIES_EXEC in the function SET_PERSONALITY2() of the
file arch/mips/include/asm/elf.h.

Otherwise, with this flag set, PROT_READ implies PROT_EXEC for
mmap to make memory executable that is not safe, because this
condition allows an attacker to simply jump to and execute bytes
that are considered to be just data [1].

In mm/mmap.c:
unsigned long do_mmap(struct file *file, unsigned long addr,
			unsigned long len, unsigned long prot,
			unsigned long flags, vm_flags_t vm_flags,
			unsigned long pgoff, unsigned long *populate,
			struct list_head *uf)
{
	[...]
	if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC))
		if (!(file && path_noexec(&file->f_path)))
			prot |= PROT_EXEC;
	[...]
}

By the way, x86 and ARM64 have done the similar thing.

After commit 250c2277 ("x86_64: move kernel"), in the file
arch/x86/kernel/process_64.c:
void set_personality_64bit(void)
{
	[...]
	current->personality &= ~READ_IMPLIES_EXEC;
}

After commit 48f99c8e ("arm64: Preventing READ_IMPLIES_EXEC
propagation"), in the file arch/arm64/include/asm/elf.h:
#define SET_PERSONALITY(ex)						\
({									\
	clear_thread_flag(TIF_32BIT);					\
	current->personality &= ~READ_IMPLIES_EXEC;			\
})

[1] https://insights.sei.cmu.edu/cert/2014/02/feeling-insecure-blame-your-parent.htmlReported-by: NJuxin Gao <gaojuxin@loongson.cn>
Co-developed-by: NJuxin Gao <gaojuxin@loongson.cn>
Signed-off-by: NJuxin Gao <gaojuxin@loongson.cn>
Signed-off-by: NTiezhu Yang <yangtiezhu@loongson.cn>
Reviewed-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Close "fd" before the return of map_vdso() and close "out_file"
in main().
Signed-off-by: NPeng Fan <fanpeng@loongson.cn>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Refresh CU1000-Neo's defconfig to support LED.
Tested-by: N周正 (Zhou Zheng) <sernia.zhou@foxmail.com>
Signed-off-by: N周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

1.The CU1000-Neo board actually uses X1000E instead of X1000,
  so the wrongly written "ingenic,x1000" in compatible should
  be changed to "ingenic,x1000e".
2.Adjust the order of nodes according to the corresponding
  address value.
3.Drop unnecessary node in "wlan_pwrseq".
4.Add the leds node to "cu1000-neo.dts".
Tested-by: N周正 (Zhou Zheng) <sernia.zhou@foxmail.com>
Signed-off-by: N周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Add a device tree and a defconfig for the Ingenic X1830 based
YSH & ATIL CU Neo board.
Tested-by: N周正 (Zhou Zheng) <sernia.zhou@foxmail.com>
Signed-off-by: N周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

1.Add bindings for Ingenic X1830 based board, prepare for later dts.
2.The CU1000-Neo board actually uses X1000E instead of X1000, so
  the wrongly written "ingenic,x1000" in bindings should be changed
  to "ingenic,x1000e", the corresponding dts file modification will
  be made in a patch later in this series.
Tested-by: N周正 (Zhou Zheng) <sernia.zhou@foxmail.com>
Signed-off-by: N周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Support the Ingenic X1830 SoC using the code under arch/mips/jz4740.
This is left unselectable in Kconfig until a X1830 based board is
added in a later commit.
Tested-by: N周正 (Zhou Zheng) <sernia.zhou@foxmail.com>
Signed-off-by: N周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

sparse report build warning as follows:
arch/mips/vdso/vdso-n32-image.c:13:35:
incorrect type in assignment (different address spaces) @@
expected void *[usertype] vdso @@     got void [noderef] <asn:1> * @@
Reported-by: Nkernel test robot <lkp@intel.com>
Signed-off-by: NSunguoyun <sunguoyun@loongson.cn>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.
Signed-off-by: NAlexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Load correct devicetree according to PRID and PCH type.
Signed-off-by: NHuacai Chen <chenhc@lemote.com>
Signed-off-by: NJiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: NTiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Add DeviceTree files for Classic Loongson64 Quad Core + LS7A boards and
Generic Loongson64 Quad Core + LS7A boards.
Signed-off-by: NHuacai Chen <chenhc@lemote.com>
Signed-off-by: NJiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: NTiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

From previous commits, the machine names with "loongson3-" prefix have
renamed to "loongson64c-" prefix in documents, but the .dts files have
not been updated as well. So fix it.
Signed-off-by: NHuacai Chen <chenhc@lemote.com>
Tested-by: NTiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Replace hwmon_device_register() with hwmon_device_register_with_info()
to fix the following boot warning :

[    9.029924] Loongson Hwmon Enter...
[    9.106850] (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info().
Signed-off-by: NZhi Li <lizhi01@loongson.cn>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Once the temperature of any CPUs is too high, it can power off immediately,
no need to check the rest of CPUs, and it is better to print a log before
power off, this is useful when analysis the abnormal issues.
Signed-off-by: NTiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: NZhi Li <lizhi01@loongson.cn>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Fix the following checkpatch warnings and errors:

ERROR: do not initialise statics to 0
+static int csr_temp_enable = 0;

WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'.
+static SENSOR_DEVICE_ATTR(name, S_IRUGO, get_hwmon_name, NULL, 0);

WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'.
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_cpu_temp, NULL, 1);

WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'.
+static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, cpu_temp_label, NULL, 1);

WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'.
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_cpu_temp, NULL, 2);

WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'.
+static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, cpu_temp_label, NULL, 2);

WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'.
+static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, get_cpu_temp, NULL, 3);

WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'.
+static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, cpu_temp_label, NULL, 3);

WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'.
+static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, get_cpu_temp, NULL, 4);

WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider using octal permissions '0444'.
+static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, cpu_temp_label, NULL, 4);

WARNING: Missing a blank line after declarations
+	int id = (to_sensor_dev_attr(attr))->index - 1;
+	return sprintf(buf, "CPU %d Temperature\n", id);

WARNING: Missing a blank line after declarations
+	int value = loongson3_cpu_temp(id);
+	return sprintf(buf, "%d\n", value);

ERROR: spaces required around that '=' (ctx:VxV)
+	for (i=0; i<nr_packages; i++)
 	      ^

ERROR: spaces required around that '<' (ctx:VxV)
+	for (i=0; i<nr_packages; i++)
 	           ^

ERROR: spaces required around that '=' (ctx:VxV)
+	for (i=0; i<nr_packages; i++)
 	      ^

ERROR: spaces required around that '<' (ctx:VxV)
+	for (i=0; i<nr_packages; i++)
 	           ^

ERROR: spaces required around that '=' (ctx:VxV)
+	for (i=0; i<nr_packages; i++) {
 	      ^

ERROR: spaces required around that '<' (ctx:VxV)
+	for (i=0; i<nr_packages; i++) {
 	           ^

WARNING: line over 80 characters
+		csr_temp_enable = csr_readl(LOONGSON_CSR_FEATURES) & LOONGSON_CSRF_TEMP;
Signed-off-by: NTiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: NZhi Li <lizhi01@loongson.cn>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

Add a basic default config for the RS-90 RetroMini board.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>

The RS-90, better known as RetroMini, is a small and pocketable handheld
gaming console from YLMChina. It has little more than a JZ4725B SoC, a
NAND, a screen, some buttons and a speaker.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>