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2020-09-21MIPS: alchemy: remove unused ALCHEMY_GPIOINT_AU1000Thomas Bogendoerfer1-7/+0
Remove unused config option ALCHEMY_GPIOINT_AU1000. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <tsbogend@alpha.franken.de>
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 <tsbogend@alpha.franken.de>
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 <chenhc@lemote.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <chenhc@lemote.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <chenhc@lemote.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <shipujin.t@gmail.com> Signed-off-by: Pujin Shi <shipj@lemote.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <hulkci@huawei.com> Signed-off-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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: stable@vger.kernel.org # v5.7 Fixes: 62249209a772 ("MIPS: ingenic: Default to a generic board") Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <chenhc@lemote.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-18MIPS: netlogic: Remove unused codeYouling Tang1-15/+0
Remove some unused code. Signed-off-by: Youling Tang <tangyouling@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <miaoqinglang@huawei.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <zhangqilong3@huawei.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <liwei391@huawei.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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 <tsbogend@alpha.franken.de>
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 <tsbogend@alpha.franken.de>
2020-09-07MIPS: Get rid of BCM1250_M3_WARThomas Bogendoerfer14-51/+5
BCM1250_M3_WAR is depending on CONFIG_CONFIG_SB1_PASS_2_WORKAROUNDS. So using this option directly lets and remove define. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Replace SIBYTE_1956_WAR by CONFIG_SB1_PASS_2_WORKAROUNDSThomas Bogendoerfer14-25/+4
SB1250 uart bug is related to PASS 2 workarounds. Use config CONFIG_SB1_PASS_2_WORKAROUNDS directly and get rid of SIBYTE_1956_WAR. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Convert MIPS34K_MISSED_ITLB_WAR into a config optionThomas Bogendoerfer15-22/+6
Use a new config option to enable MIPS 34K ITLB workaround and remove define from different war.h files. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Convert R10000_LLSC_WAR info a config optionThomas Bogendoerfer19-31/+15
Use a new config option to enabel R1000_LLSC workaound and remove define from different war.h files. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Convert ICACHE_REFILLS_WORKAROUND_WAR into a config optionThomas Bogendoerfer15-23/+16
Use a new config option to enable I-cache refill workaround and remove define from different war.h files. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Convert TX49XX_ICACHE_INDEX_INV into a config optionThomas Bogendoerfer15-26/+12
Use a new config option to enable TX49XX I-cache index invalidate workaround and remove define from different war.h files. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Remove MIPS4K_ICACHE_REFILL_WAR and MIPS_CACHE_SYNC_WARThomas Bogendoerfer13-59/+0
Neither MIPS4K_ICACHE_REFILL_WAR nor MIPS_CACHE_SYNC_WAR are implemented, so removing defines for it won't change anything. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Convert R4600_V2_HIT_CACHEOP into a config optionThomas Bogendoerfer16-41/+22
Use a new config option to enable R4600 V2 cacheop hit workaround and remove define from different war.h files. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Convert R4600_V1_HIT_CACHEOP into a config optionThomas Bogendoerfer16-46/+33
Use a new config option to enable R4600 V1 cacheop hit workaround and remove define from the different war.h files. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Convert R4600_V1_INDEX_ICACHEOP into a config optionThomas Bogendoerfer15-24/+12
Use a new config option to enable R4600 V1 index I-cacheop workaround and remove define from different war.h files. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: dts/ingenic: Cleanup qi_lb60.dtsPaul Cercueil1-69/+68
Cleanup a bit the Device Tree file: 1. Respect the number of cells in GPIO descriptors and keyboard matrix; 2. Use 'ecc-engine' instead of deprecated 'ingenic,bch-controller' property; 3. The NAND's rb-gpios is actually active high; 3. The FRE/FWE pins must be configured in the proper mode for the NAND to work if it was not already done by the bootloader. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-07MIPS: Loongson64: Remove unused loongson_reboot.Jinyang He1-5/+0
Commit 1bdb7b76705a ("MIPS: Loongson64: Cleanup unused code") left the loongson_reboot unused, delete it. Signed-off-by: Jinyang He <hejinyang@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-03MIPS: p5600: Discard UCA config selectionJinyang He1-1/+0
Commit 2a5984360b01 ("MIPS: Drop CPU_SUPPORTS_UNCACHED_ACCELERATED") removed UCA config, but left the selection unused, delete it. Signed-off-by: Jinyang He <hejinyang@loongson.cn> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-03MIPS: Use rcu to lookup a task in mipsmt_sys_sched_setaffinity()Davidlohr Bueso1-2/+2
The call simply looks up the corresponding task (without iterating the tasklist), which is safe under rcu instead of the tasklist_lock. In addition, the setaffinity counter part already does this. Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-03MIPS: Add support for ZSTD-compressed kernelsPaul Cercueil4-1/+24
Add support for self-extracting kernels with a ZSTD compression. Tested on a kernel for the GCW-Zero, it allows to reduce the size of the kernel file from 4.1 MiB with gzip to 3.5 MiB with ZSTD, and boots just as fast. Compressed kernels are now also compiled with -D__DISABLE_EXPORTS in order to disable the EXPORT_SYMBOL() macros inside of lib/zstd/decompress.c. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-09-03lib: decompress_unzstd: Limit output sizePaul Cercueil1-1/+6
The zstd decompression code, as it is right now, will most likely fail on 32-bit systems, as the default output buffer size causes the buffer's end address to overflow. Address this issue by setting a sane default to the default output size, with a value that won't overflow the buffer's end address. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Nick Terrell <terrelln@fb.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-08-26MIPS: SGI-IP32: No need to include mc14818*.hThomas Bogendoerfer1-2/+0
Nothing needs the includes in ip32-setup.c. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-08-26MIPS: Remove unused header file m48t37.hThomas Bogendoerfer1-36/+0
No users -> remove it. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-08-26MIPS: Loongson2ef: Remove specific mc146818rtc.hThomas Bogendoerfer1-36/+0
Loonson2ef's mc146818rtc.h is the same as the generic one -> remove it. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Acked-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-08-26MIPS: SGI-IP27: No need for kmalloc.hThomas Bogendoerfer1-8/+0
SGI-IP27 is always cache coherent so we can use generic kmalloc.h and remove the ip27 specific one. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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