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2020-10-12MIPS: Loongson64: Select SMP in Kconfig to avoid build errorTiezhu Yang2-1/+1
In the current code, CONFIG_SMP can be set as N by user on the Loongson platform, then there exists the following build error under !CONFIG_SMP: CC arch/mips/kernel/asm-offsets.s In file included from ./include/linux/gfp.h:9:0, from ./include/linux/xarray.h:14, from ./include/linux/radix-tree.h:18, from ./include/linux/fs.h:15, from ./include/linux/compat.h:17, from arch/mips/kernel/asm-offsets.c:12: ./include/linux/topology.h: In function 'numa_node_id': ./include/linux/topology.h:119:2: error: implicit declaration of function 'cpu_logical_map' [-Werror=implicit-function-declaration] return cpu_to_node(raw_smp_processor_id()); ^ cc1: some warnings being treated as errors scripts/Makefile.build:117: recipe for target 'arch/mips/kernel/asm-offsets.s' failed make[1]: *** [arch/mips/kernel/asm-offsets.s] Error 1 Select SMP in Kconfig to avoid the above build error and then remove CONFIG_SMP=y in loongson3_defconfig. Signed-off-by: Tiezhu Yang <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-10-12mips: octeon: Add Ubiquiti E200 and E220 boardsMikhail Gusarov1-0/+4
These boards are used in - Ubiquiti EdgeRouter (E200), - Ubiquiti EdgeRouter Pro (E200) and - Ubiquiti Security Gateway Pro 4 (E220). Signed-off-by: Mikhail Gusarov <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-10-08MIPS: SGI-IP28: disable use of ll/sc in kernelThomas Bogendoerfer1-1/+1
SGI-IP28 systems only use broken R10k rev 2.5 CPUs, which could lock up, if ll/sc sequences are issued in certain order. Since those systems are all non-SMP, we can disable ll/sc usage in kernel. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-10-08MIPS: tx49xx: move tx4939_add_memory_regions into only userThomas Bogendoerfer3-19/+13
tx4939_add_memory_regions() is only used in txx9/rbtx4939/prom.c. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-10-06MIPS: pgtable: Remove used PAGE_USERIO defineThomas Bogendoerfer1-2/+0
There are no users of PAGE_USERIO. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-10-06MIPS: alchemy: Share prom_init implementationThomas Bogendoerfer5-69/+20
All boards have the same prom_init() function. Move it to common code and delete the duplicates. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-10-06MIPS: alchemy: Fix build breakage, if TOUCHSCREEN_WM97XX is disabledThomas Bogendoerfer1-0/+7
Only include wm97xx touchscreen probing code, if driver is enabled. Reported-by: kernel test robot <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-30MIPS: process: include exec.h header in process.cPujin Shi1-0/+1
arch/mips/kernel/process.c:696:15: error: no previous prototype for 'arch_align_stack' [-Werror=missing-prototypes] Signed-off-by: Pujin Shi <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-30MIPS: process: Add prototype for function arch_dup_task_structPujin Shi1-0/+1
This commit adds a prototype to fix warning at W=1: arch/mips/kernel/process.c:95:5: error: no previous prototype for 'arch_dup_task_struct' [-Werror=missing-prototypes] Signed-off-by: Pujin Shi <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-27MIPS: idle: Add prototype for function check_waitPujin Shi1-0/+2
This commit adds a prototype to fix warning at W=1: arch/mips/kernel/idle.c:126:13: error: no previous prototype for 'check_wait' [-Werror=missing-prototypes] Signed-off-by: Pujin Shi <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-27MIPS: Increase range of CONFIG_FORCE_MAX_ZONEORDERPaul Cercueil1-1/+1
There is nothing that prevents us from using lower maximum values. It's something that we actually want, when using bigger page sizes on devices with low RAM. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-27MIPS: Ingenic: Fix bugs when detecting L2 cache of JZ4775 and X1000E.周琰杰 (Zhou Yanjie)1-0/+2
1.Fix bugs when detecting ways value of JZ4775's L2 cache. 2.Fix bugs when detecting sets value and ways value of X1000E's L2 cache. Signed-off-by: 周琰杰 (Zhou Yanjie) <[email protected]> Reviewed-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-27MIPS: Ingenic: Add system type for new Ingenic SoCs.周琰杰 (Zhou Yanjie)2-0/+14
Add JZ4775, X1000E, X2000, and X2000E system type for cat /proc/cpuinfo to give out JZ4775, X1000E, X2000 and X2000E. Signed-off-by: 周琰杰 (Zhou Yanjie) <[email protected]> Reviewed-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-27dt-bindings: MIPS: Add X2000E based CU2000-Neo.周琰杰 (Zhou Yanjie)1-0/+5
Add bindings for Ingenic X2000E based board, prepare for later dts. Signed-off-by: 周琰杰 (Zhou Yanjie) <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-23Revert "MIPS: OCTEON: use devm_platform_ioremap_resource"Thomas Bogendoerfer1-1/+9
This reverts commit 0ee69c589ec8659560910815f32c13af8587a779. Resource is still needed later in the code, so using devm_platform_ioremap_resource is no win at all. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: kexec: Add crashkernel=YM handlingYouling Tang1-3/+21
When the kernel crashkernel parameter is specified with just a size, we are supposed to allocate a region from RAM to store the crashkernel. However, MIPS merely reserves physical address zero with no checking that there is even RAM there. Fix this by lifting similar code from x86, importing it to MIPS with the MIPS specific parameters added. In the absence of any platform specific information, we allocate the crashkernel region from the first 512MB of physical memory (limited to CKSEG0 or KSEG0 address range). When X is not specified, crash_base defaults to 0 (crashkernel=YM@XM). E.g. without this patch: The environment as follows: [ 0.000000] MIPS: machine is loongson,loongson64c-4core-ls7a ... [ 0.000000] Kernel command line: root=/dev/sda2 crashkernel=96M ... The warning as follows: [ 0.000000] Invalid memory region reserved for crash kernel And the iomem as follows: 00200000-0effffff : System RAM 00200000-00b47f87 : Kernel code 00b47f88-00dfffff : Kernel data 00e60000-01f73c7f : Kernel bss 1a000000-1bffffff : pci@1a000000 ... With this patch: After increasing crash_base <= 0 handling. And the iomem as follows: 00200000-0effffff : System RAM 00200000-00b47f87 : Kernel code 00b47f88-00dfffff : Kernel data 00e60000-01f73c7f : Kernel bss 04000000-09ffffff : Crash kernel 1a000000-1bffffff : pci@1a000000 ... Signed-off-by: Youling Tang <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: Loongson64: Add UART node for LS7A PCHTiezhu Yang1-0/+39
When I update the latest kernel on the Loongson platform used with LS7A bridge chip, the serial console has no output, this is because the machine uses LS7A UART0 instead of CPU UART0, add UART node for LS7A PCH to enhance the compatibility. Signed-off-by: Tiezhu Yang <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: Ingenic: Add CPU nodes for Ingenic SoCs.周琰杰 (Zhou Yanjie)6-1/+93
Add 'cpus' node to the jz4725b.dtsi, jz4740.dtsi, jz4770.dtsi, jz4780.dtsi, x1000.dtsi, and x1830.dtsi files. Tested-by: H. Nikolaus Schaller <[email protected]> Tested-by: Paul Boddie <[email protected]> Signed-off-by: 周琰杰 (Zhou Yanjie) <[email protected]> Reviewed-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: malta: remove mach-malta/malta-dtshim.h header fileThomas Bogendoerfer3-26/+2
To clean up mach-* directories move external declaration of malta_dt_shim() to mips-boards/malta.h and remove malta-dtshim.h. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: malta: remove unused header fileThomas Bogendoerfer1-33/+0
Remove unused heasder file asm/mach-malta/malta-pm.h. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: alchemy: remove unused ALCHEMY_GPIOINT_AU1000Thomas Bogendoerfer1-7/+0
Remove unused config option ALCHEMY_GPIOINT_AU1000. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: alchemy: remove unused ALCHEMY_GPIOINT_AU1300Thomas Bogendoerfer2-141/+0
Remove unused config option ALCHEMY_GPIOINT_AU1300 and related code. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: SGI-IP30: Move irq bits to better header filesThomas Bogendoerfer4-87/+67
Move HEART specific parts of mach-ip30/irq.h to asm/sgi/heart.h and IP30 specific parts to sgi-ip30/ip30-common.h. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: Loongson-3: Calculate ra properly when unwinding the stackHuacai Chen1-1/+15
Loongson-3 has 16-bytes load/store instructions: gslq and gssq. This patch calculate ra properly when unwinding the stack, if ra is saved by gssq and restored by gslq. Signed-off-by: Huacai Chen <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: Loongson-3: Enable COP2 usage in kernelHuacai Chen6-7/+19
Loongson-3's COP2 is Multi-Media coprocessor, it is disabled in kernel mode by default. However, gslq/gssq (16-bytes load/store instructions) overrides the instruction format of lwc2/swc2. If we wan't to use gslq/ gssq for optimization in kernel, we should enable COP2 usage in kernel. Please pay attention that in this patch we only enable COP2 in kernel, which means it will lose ST0_CU2 when a process go to user space (try to use COP2 in user space will trigger an exception and then grab COP2, which is similar to FPU). And as a result, we need to modify the context switching code because the new scheduled process doesn't contain ST0_CU2 in its THERAD_STATUS probably. For zboot, we disable gslq/gssq be generated by toolchain. Signed-off-by: Huacai Chen <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: context switch: Use save/restore instead of set/clear for Status.CU2Huacai Chen1-1/+3
Some processors (such as Loongson-3) need to enable CU2 in kernel mode, current set/clear method will lose Status.CU2 during context switching, so use save/restore method instead. Signed-off-by: Huacai Chen <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: kernel: include probes-common.h header in branch.cPujin Shi1-0/+2
arch/mips/kernel/branch.c:876:5: error: no previous prototype for '__insn_is_compact_branch' [-Werror=missing-prototypes] Signed-off-by: Pujin Shi <[email protected]> Signed-off-by: Pujin Shi <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-21MIPS: Make setup_elfcorehdr and setup_elfcorehdr_size staticJason Yan1-1/+1
This addresses the following sparse warning: arch/mips/kernel/setup.c:446:33: warning: symbol 'setup_elfcorehdr_size' was not declared. Should it be static? Reported-by: Hulk Robot <[email protected]> Signed-off-by: Jason Yan <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MAINTAINERS: Update paths to Ingenic platform codePaul Cercueil1-2/+3
Support for Ingenic chips has been moved to the generic MIPS platform. Update the paths accordingly. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: configs: Regenerate configs of Ingenic boardsPaul Cercueil6-35/+11
For each board the MACH_INGENIC_SOC option was selected instead of MACH_INGENIC. Nothing else was changed in the menuconfig. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: jz4740: Rename jz4740 folders to ingenicPaul Cercueil4-2/+2
Now that all the jz4740 platform code has been removed, and we're left with only a Kconfig and the cpu-feature-overrides.h file, finalize the cleanup process by renaming the jz4740 and include/mach-jz4740 folders to ingenic and include/mach-ingenic. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: jz4740: Drop all obsolete filesPaul Cercueil4-170/+0
Support for Ingenic SoCs is now provided by the arch/mips/generic/ code, so all files in the arch/mips/jz4740/ folder can dropped, except for the Kconfig, and the cpu-feature-overrides.h header file. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: generic: Add support for Ingenic SoCsPaul Cercueil7-18/+149
Add support for Ingenic SoCs in arch/mips/generic/. The Kconfig changes are here to ensure that it is possible to compile either a generic kernel that supports Ingenic SoCs, or a Ingenic-only kernel, both using the same code base, to avoid duplicated code. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: generic: Increase NR_IRQS to 256Paul Cercueil1-1/+1
128 IRQs is not enough to support Ingenic SoCs. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: generic: Add support for zbootPaul Cercueil2-0/+2
There is no reason we can't create compressed kernels here, so select the option SYS_SUPPORTS_ZBOOT. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: generic: Support booting with built-in or appended DTBPaul Cercueil1-5/+4
The plat_get_fdt() checked that the kernel was booted using UHI before reading the 'fw_passed_dtb' variable. However, this variable is also set when the DT has been appended, or when it has been built into the kernel. Support these usecases by removing the UHI check. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: generic: Init command line with fw_init_cmdline()Paul Cercueil1-1/+1
The function bootcmdline_init() in arch/mips/kernel/setup.c will populate the boot_command_line string using the parameters hardcoded in the kernel, and those provided in the devicetree file. Then, it would append the content of the arcs_cmdline variable, which is filled by the board's plat_mem_setup() function. The plat_mem_setup() function for the generic MIPS board would just copy the current boot_command_line to arcs_cmdline, which is nonsense for two reasons: - the result will be appended to the boot_command_line anyway, so all it does is duplicate every single parameter on the command line; - the code did not perform at all what it's supposed to, which is to retrieve the parameters passed by the bootloader. Fix this by calling fw_init_cmdline() in plat_mem_setup(), which will properly initialize arcs_cmdline to the parameters passed by the bootloader. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: generic: Allow boards to set system typePaul Cercueil1-0/+5
Check for the system_type variable in the get_system_type() function. If non-NULL, return it as the system type. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: Kconfig: add MIPS_GENERIC_KERNEL symbolPaul Cercueil2-3/+7
The MIPS_GENERIC symbol now won't select any other configuration option. The MIPS_GENERIC_KERNEL will select all the options that the previous MIPS_GENERIC option did select, and will select MIPS_GENERIC as well. The whole point of this, is that it now becomes possible to compile a kernel for a SoC supported by the arch/mips/generic/ code, without making that kernel generic itself. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: cpu-probe: ingenic: Fix broken BUG_ONPaul Cercueil1-1/+1
The previous code was doing: BUG_ON(!__builtin_constant_p(cpu_has_counter) || cpu_has_counter); This only worked as the "cpu_has_counter" macro was overridden in <cpu-feature-overrides.h>. The default "cpu_has_counter" macro is non-constant, which triggered the BUG_ON() independently of the value returned by the macro. What we want to check here, is that *if* the macro was overridden to a compile-time constant, then must be defined to zero, otherwise it's a bug. So the correct check is: BUG_ON(__builtin_constant_p(cpu_has_counter) && cpu_has_counter); Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: cpu-probe: Mark XBurst CPU as having vtagged cachesPaul Cercueil1-0/+3
XBurst CPUs present in Ingenic SoCs have virtually tagged caches, according to the <cpu-features-override.h> header. Add that information to cpu_probe_ingenic(). Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: cpu-probe: Set Ingenic's writecombine to _CACHE_CACHABLE_WAPaul Cercueil2-6/+2
Previously, in cpu_probe_ingenic(), c->writecombine was set to _CACHE_UNCACHED_ACCELERATED, but this macro was defined differently when CONFIG_MACH_INGENIC was set. This made it impossible to support multiple CPUs. Address this issue by setting c->writecombine to _CACHE_CACHABLE_WA directly and removing the dependency on CONFIG_MACH_INGENIC. Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: configs: lb60: Fix defconfig not selecting correct boardPaul Cercueil1-0/+1
Since INGENIC_GENERIC_BOARD was introduced, the JZ4740_QI_LB60 option is no longer the default, so the symbol has to be selected by the defconfig, otherwise the kernel built will be for a generic Ingenic board and won't have the Device Tree blob built-in. Cc: [email protected] # v5.7 Fixes: 62249209a772 ("MIPS: ingenic: Default to a generic board") Signed-off-by: Paul Cercueil <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: Loongson64: Increase NR_IRQS to 320Huacai Chen1-1/+2
Modernized Loongson64 uses a hierarchical organization for interrupt controllers (INTCs), all INTC nodes (not only leaf nodes) need some IRQ numbers. This means 280 (i.e., NR_IRQS_LEGACY + NR_MIPS_CPU_IRQS + 256) is not enough to represent all interrupts, so let's increase NR_IRQS to 320 (NR_IRQS_LEGACY + NR_MIPS_CPU_IRQS + NR_MAX_CHAINED_IRQS + 256). Signed-off-by: Huacai Chen <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: netlogic: Remove unused codeYouling Tang1-15/+0
Remove some unused code. Signed-off-by: Youling Tang <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: OCTEON: use devm_platform_ioremap_resourceQinglang Miao1-9/+1
Note that error handling on the result of a call to platform_get_resource() is unneeded when the value is passed to devm_ioremap_resource(), so remove it. Then use the helper function that wraps the calls to platform_get_resource() and devm_ioremap_resource() together. Signed-off-by: Qinglang Miao <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: pci: use devm_platform_ioremap_resource_bynameZhang Qilong3-11/+7
Use the devm_platform_ioremap_resource_byname() helper instead of calling platform_get_resource_byname() and devm_ioremap_resource() separately. Signed-off-by: Zhang Qilong <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-18MIPS: Correct the header guard of r4k-timer.hWei Li1-3/+3
Rename the header guard of r4k-timer.h from __ASM_R4K_TYPES_H to __ASM_R4K_TIMER_H what corresponding with the file name. Signed-off-by: Wei Li <[email protected]> Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-07MIPS: Remove mach-*/war.hThomas Bogendoerfer13-132/+0
After conversion of all WAR defines we can now remove all mach-*/war.h files. Signed-off-by: Thomas Bogendoerfer <[email protected]>
2020-09-07MIPS: Get rid of CAVIUM_OCTEON_DCACHE_PREFETCH_WARThomas Bogendoerfer3-5/+2
CAVIUM_OCTEON_DCACHE_PREFETCH_WAR is a check for Octeon model CN6XXXX. By using the version check we can remove the define. Signed-off-by: Thomas Bogendoerfer <[email protected]>
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