- 25 Mar, 2021 4 commits
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Qing Zhang authored
Distinguish between Loongson-3A series CPU and Loongson-2K1000 CPU UART0. Signed-off-by:
Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by:
Qing Zhang <zhangqing@loongson.cn> Tested-by:
Ming Wang <wangming01@loongson.cn> Signed-off-by:
Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Qing Zhang authored
Get the fixed-clock from the CPU0 node of the device tree. Signed-off-by:
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Qing Zhang authored
Add DTB boot support, only support Loongson-2K1000 processor for now, determine whether to use the built-in DTB or the DTB from the firmware by checking the range of CKSEG0 and XKPHYS. loongson_fw_interface will be used in the future. Signed-off-by:
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Qing Zhang authored
Add DeviceTree files for Loongson-2K1000 processor, currently only supports single-core boot. Signed-off-by:
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- 24 Mar, 2021 10 commits
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Huang Pei authored
commit ba9196d2 ("MIPS: Make DIEI support as a config option") use CPU_HAS_DIEI to indicate whether di/ei is implemented correctly, without this patch, "local_irq_disable" from entry.S in 3A1000 (with buggy di/ei) lose protection of commit e97c5b60 ("MIPS: Make irqflags.h functions preempt-safe for non-mipsr2 cpus") Fixes: ba9196d2 ("MIPS: Make DIEI support as a config option") Signed-off-by:
Huang Pei <huangpei@loongson.cn> Signed-off-by:
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Maciej W. Rozycki authored
Enable support for the onboard PATA PIO mode3 interface, which is one of the boot devices supported by the CFE firmware with the Broadcom SWARM board. Include disk, CD-ROM and generic storage drivers. Signed-off-by:
Maciej W. Rozycki <macro@orcam.me.uk> Signed-off-by:
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Maciej W. Rozycki authored
Options have been removed and reordered since the last update, so regenerate the template so as not to interfere with actual changes. Signed-off-by:
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Christoph Hellwig authored
Various malta defconfigs enable CONFIG_IDE for the tc86c001 ide driver, hich is a Toshiba plug in card that does not make much sense to use on bigsur platforms. For all other ATA cards libata support is already enabled. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Christoph Hellwig authored
bigsur_defconfig enables CONFIG_IDE for the tc86c001 ide driver, which is a Toshiba plug in card that does not make much sense to use on bigsur platforms. For all other ATA cards libata support is already enabled. Signed-off-by:
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Christoph Hellwig authored
rbtx49xx_defconfig enables CONFIG_IDE for the tx4938 and tx4939 ide drivers, but those aren't actually used by the last known remaining user: https://lore.kernel.org/lkml/20210107.101729.1936921832901251107.anemo@mba.ocn.ne.jp/Signed-off-by:
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Christoph Hellwig authored
Use libata instead of the deprecated legacy ide driver in workpad_defconfig. Signed-off-by:
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Christoph Hellwig authored
sb1250_swarm_defconfig enables CONFIG_IDE but no actual host controller driver, so just drop CONFIG_IDE, CONFIG_BLK_DEV_IDECD and CONFIG_BLK_DEV_IDETAPE as they are useless. Signed-off-by:
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Bhaskar Chowdhury authored
s/packt/packet/ Signed-off-by:
Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by:
Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
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Bhaskar Chowdhury authored
s/techically/technically/ Signed-off-by:
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- 14 Mar, 2021 2 commits
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Wang Qing authored
debugfs_create_file_unsafe does not protect the fops handed to it against file removal. DEFINE_DEBUGFS_ATTRIBUTE makes the fops aware of the file lifetime and thus protects it against removal. Signed-off-by:
Wang Qing <wangqing@vivo.com> Signed-off-by:
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Huang Pei authored
+. LOONGSON64 use 0x98xx_xxxx_xxxx_xxxx as xphys cached, instread of 0xa8xx_xxxx_xxxx_xxxx +. let CONFIG_MIPS_PGD_C0_CONTEXT depend on 64bit +. cast CAC_BASE into u64 to silence warning on MIPS32 CP0 Context has enough room for wraping pgd into its 41-bit PTEBase field. +. For XPHYS, the trick is that pgd is 4kB aligned, and the PABITS <= 53, only save 53 - 12 = 41 bits, aka : bit[63:59] | 0000 00 | bit[53:12] | 0000 0000 0000 +. for CKSEG0, only save 29 - 12 = 17 bits when switching pgd, only need to save bit[53:12] or bit[28:12] into CP0 Context's bit[63:23], see folling asm generated at run time tlbmiss_handler_setup_pgd: .set push .set noreorder dsra a2, a0, 29 move a3, a0 dins a0, zero, 29, 35 daddiu a2, a2, 4 //for CKSEG0, a2 from 0xfffffffffffffffc //into 0 movn a0, a3, a2 dsll a0, a0, 11 jr ra dmtc0 a0, CP0_CONTEXT .set pop when using it on page walking dmfc0 k0, CP0_CONTEXT dins k0, zero, 0, 23 // zero badv2 ori k0, k0, (CAC_BASE >> 53) // *prefix* with bit[63:59] drotr k0, k0, 11 // kick it in the right place Signed-off-by:
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- 12 Mar, 2021 18 commits
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Paul Cercueil authored
The NT39016 panel is a fun beast, even though the documentation states that the CS line is active-low, it will work just fine if the CS line is configured as active-high, but it won't work if the CS line is forced low or forced high. Since it did actually work with the spi-cs-high property, this is not a bugfix, but we should nonetheless remove that property to match the documentation. Signed-off-by:
Paul Cercueil <paul@crapouillou.net> Signed-off-by:
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Paul Cercueil authored
The NT39016 panel is a fun beast, even though the documentation states that the CS line is active-low, it will work just fine if the CS line is configured as active-high, but it won't work if the CS line is forced low or forced high. Since it did actually work with the spi-cs-high property, this is not a bugfix, but we should nonetheless remove that property from the example to match the documentation. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Rafał Miłecki authored
Separated function was not improving code quality much (or at all). Moreover it expected possible flash end address as argument and it was returning NVRAM size. The new code always operates on offsets which means less logic and less calculations. Signed-off-by:
Rafał Miłecki <rafal@milecki.pl> Signed-off-by:
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Rafał Miłecki authored
This loop requires variable initialization, stop condition and post iteration increment. It's pretty much a for loop definition. Signed-off-by:
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Rafał Miłecki authored
This simplifies function finding NVRAM. It doesn't directly deal with NVRAM structure anymore and is a bit smaller. Signed-off-by:
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Rafał Miłecki authored
This avoids duplicating code doing casting and checking for NVRAM magic. Signed-off-by:
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Rafał Miłecki authored
1. Use "bcm47xx_" function name prefix for consistency 2. It takes flash start as argument so s/iobase/flash_start/ 3. "off" was used for finding flash end so just call it "flash_size" Signed-off-by:
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Huang Pei authored
Loongson64 allocates arrays of pglist_data statically and is located at Node 0, and cpu from Nodes other than 0 need remote access to pglist_data and zone info. Delay pglist_data allocation till run time, and make it NUMA-aware Signed-off-by:
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Qing Zhang authored
The purpose of separating loongson_system_configuration from boot_param.h is to keep the other structure consistent with the firmware. Signed-off-by:
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Qing Zhang authored
We don't need them anymore, They are uniform on all Loongson64 systems and have been fixed in DeviceTree.loongson3_platform_init is replaced with DTS + driver. Signed-off-by:
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Ilya Lipnitskiy authored
Upstream a long-standing OpenWrt patch [0] that fixes MT7620 PCIe PLL lock check. The existing code checks the wrong register bit: PPLL_SW_SET is not defined in PPLL_CFG1 and bit 31 of PPLL_CFG1 is marked as reserved in the MT7620 Programming Guide. The correct bit to check for PLL lock is PPLL_LD (bit 23). Also reword the error message for clarity. Without this change it is unlikely that this driver ever worked with mainline kernel. [0]: https://lists.infradead.org/pipermail/lede-commits/2017-July/004441.htmlSigned-off-by:
Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> Cc: John Crispin <john@phrozen.org> Cc: linux-mips@vger.kernel.org Cc: linux-mediatek@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by:
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Álvaro Fernández Rojas authored
Now that there are proper device tree bindings we can start using them. Signed-off-by:
Álvaro Fernández Rojas <noltari@gmail.com> Acked-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Álvaro Fernández Rojas authored
Now that there are proper device tree bindings we can start using them. Signed-off-by:
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Álvaro Fernández Rojas authored
Now that there are proper device tree bindings we can start using them. Signed-off-by:
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Álvaro Fernández Rojas authored
Now that there are proper device tree bindings we can start using them. Signed-off-by:
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Álvaro Fernández Rojas authored
Now that there are proper device tree bindings we can start using them. Signed-off-by:
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Álvaro Fernández Rojas authored
Now that there are proper device tree bindings we can start using them. Signed-off-by:
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Álvaro Fernández Rojas authored
Change /include/ with #include in order to be able to include header files from dt-bindings. Signed-off-by:
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- 10 Mar, 2021 6 commits
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Tiezhu Yang authored
bpftrace is a high-level tracing language for Linux enhanced Berkeley Packet Filter (eBPF) available in recent Linux kernels (4.x). bpftrace uses LLVM as a backend to compile scripts to BPF-bytecode and makes use of BCC for interacting with the Linux BPF system, as well as existing Linux tracing capabilities: kernel dynamic tracing (kprobes), user-level dynamic tracing (uprobes), and tracepoints. According to Linux Kernel Requirements in bpftrace/INSTALL.md [1], the kernel needs to be built with the following options: CONFIG_BPF=y CONFIG_BPF_SYSCALL=y CONFIG_BPF_JIT=y CONFIG_HAVE_EBPF_JIT=y CONFIG_BPF_EVENTS=y CONFIG_FTRACE_SYSCALLS=y CONFIG_FUNCTION_TRACER=y CONFIG_HAVE_DYNAMIC_FTRACE=y CONFIG_DYNAMIC_FTRACE=y CONFIG_HAVE_KPROBES=y CONFIG_KPROBES=y CONFIG_KPROBE_EVENTS=y CONFIG_ARCH_SUPPORTS_UPROBES=y CONFIG_UPROBES=y CONFIG_UPROBE_EVENTS=y CONFIG_DEBUG_FS=y So enable some missed configs in loongson3_defconfig to make sure the above configs are set after make loongson3_defconfig. [1] https://github.com/iovisor/bpftrace/blob/master/INSTALL.mdSigned-off-by:
Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by:
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Bhaskar Chowdhury authored
s/revelant/relevant/ Signed-off-by:
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Masahiro Yamada authored
Many architectures duplicate similar shell scripts. This commit converts mips to use scripts/syscallhdr.sh. Signed-off-by:
Masahiro Yamada <masahiroy@kernel.org> Signed-off-by:
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Masahiro Yamada authored
Many architectures duplicate similar shell scripts. This commit converts mips to use scripts/syscalltbl.sh. This also unifies syscall_table_32_o32.h and syscall_table_64_o32.h into syscall_table_o32.h. The offset parameters are unneeded here; __SYSCALL(nr, entry) is defined as 'PTR entry', so the parameter 'nr' is not used in the first place. With this commit, syscall tables and generated files are straight mapped, which makes things easier to understand. syscall_n32.tbl --> syscall_table_n32.h syscall_n64.tbl --> syscall_table_n64.h syscall_o32.tbl --> syscall_table_o32.h Then, the abi parameters are also unneeded. Signed-off-by:
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Thomas Bogendoerfer authored
After removal of the guest part of KVM TE (trap and emulate), also remove the host part. Signed-off-by: -
Thomas Bogendoerfer authored
KVM_GUEST is broken and unmaintained, so let's remove it. Reviewed-by:
Huacai Chen <chenhuacai@kernel.org> Reviewed-by:
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