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* riscv: fix nommu_k210_sdcard_defconfigDamien Le Moal2022-02-241-1/+1
| | | | | | | | | | | Instead of an arbitrary delay, use the "rootwait" kernel option to wait for the mmc root device to be ready. Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Fixes: 7e09fd3994c5 ("riscv: Add Canaan Kendryte K210 SD card defconfig") Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
* RISC-V: nommu_virt: Drop unused SLAB_MERGE_DEFAULTPalmer Dabbelt2022-01-201-1/+0
| | | | | | | | | | | Our nommu_virt_defconfig set SLOB=y and SLAB_MERGE_DEFAULT=n. As of eb52c0fc2331 ("mm: Make SLAB_MERGE_DEFAULT depend on SL[AU]B") it's no longer necessary to set the second, which appears to never have had any effect for SLOB=y anyway. This was suggested by savedefconfig. Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
* RISC-V: Introduce sv48 support without relocatable kernelPalmer Dabbelt2022-01-193-3/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patchset allows to have a single kernel for sv39 and sv48 without being relocatable. The idea comes from Arnd Bergmann who suggested to do the same as x86, that is mapping the kernel to the end of the address space, which allows the kernel to be linked at the same address for both sv39 and sv48 and then does not require to be relocated at runtime. This implements sv48 support at runtime. The kernel will try to boot with 4-level page table and will fallback to 3-level if the HW does not support it. Folding the 4th level into a 3-level page table has almost no cost at runtime. Note that kasan region had to be moved to the end of the address space since its location must be known at compile-time and then be valid for both sv39 and sv48 (and sv57 that is coming). * riscv-sv48-v3: riscv: Explicit comment about user virtual address space size riscv: Use pgtable_l4_enabled to output mmu_type in cpuinfo riscv: Implement sv48 support asm-generic: Prepare for riscv use of pud_alloc_one and pud_free riscv: Allow to dynamically define VA_BITS riscv: Introduce functions to switch pt_ops riscv: Split early kasan mapping to prepare sv48 introduction riscv: Move KASAN mapping next to the kernel mapping riscv: Get rid of MAXPHYSMEM configs Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * riscv: Get rid of MAXPHYSMEM configsAlexandre Ghiti2022-01-193-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_MAXPHYSMEM_* are actually never used, even the nommu defconfigs selecting the MAXPHYSMEM_2GB had no effects on PAGE_OFFSET since it was preempted by !MMU case right before. In addition, the move of the kernel mapping at the end of the address space broke the use of MAXPHYSMEM_2G with MMU since it defines PAGE_OFFSET at the same address as the kernel mapping. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Fixes: 2bfc6cd81bd1 ("riscv: Move kernel mapping outside of linear mapping") Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Conor Dooley <Conor.Dooley@microchip.com> Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
* | Merge tag 'riscv-for-linus-5.17-mw0' of ↵Linus Torvalds2022-01-195-16/+9
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: - Support for the DA9063 as used on the HiFive Unmatched. - Support for relative extables, which puts us in line with other architectures and save some space in vmlinux. - A handful of kexec fixes/improvements, including the ability to run crash kernels from PCI-addressable memory on the HiFive Unmatched. - Support for the SBI SRST extension, which allows systems that do not have an explicit driver in Linux to reboot. - A handful of fixes and cleanups, including to the defconfigs and device trees. * tag 'riscv-for-linus-5.17-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (52 commits) RISC-V: Use SBI SRST extension when available riscv: mm: fix wrong phys_ram_base value for RV64 RISC-V: Use common riscv_cpuid_to_hartid_mask() for both SMP=y and SMP=n riscv: head: remove useless __PAGE_ALIGNED_BSS and .balign riscv: errata: alternative: mark vendor_patch_func __initdata riscv: head: make secondary_start_common() static riscv: remove cpu_stop() riscv: try to allocate crashkern region from 32bit addressible memory riscv: use hart id instead of cpu id on machine_kexec riscv: Don't use va_pa_offset on kdump riscv: dts: sifive: fu540-c000: Fix PLIC node riscv: dts: sifive: fu540-c000: Drop bogus soc node compatible values riscv: dts: sifive: Group tuples in register properties riscv: dts: sifive: Group tuples in interrupt properties riscv: dts: microchip: mpfs: Group tuples in interrupt properties riscv: dts: microchip: mpfs: Fix clock controller node riscv: dts: microchip: mpfs: Fix reference clock node riscv: dts: microchip: mpfs: Fix PLIC node riscv: dts: microchip: mpfs: Drop empty chosen node riscv: dts: canaan: Group tuples in interrupt properties ...
| * | RISC-V: defconfigs: Remove redundant K210 DT sourcePalmer Dabbelt2022-01-062-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | The "k210_generic" DT has been the default in Kconfig since 67d96729a9e ("riscv: Update Canaan Kendryte K210 device tree"), so drop it from the defconfigs to avoid diff with savedefconfig. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Remove redundant CONFIG_EFI=yPalmer Dabbelt2022-01-051-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | We've always had CONFIG_EFI as "def_bool y" so this has always been redundant. It's removed by savedefconfig, so drop it to keep things clean. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Remove redundant CONFIG_POWER_RESETPalmer Dabbelt2022-01-052-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As of ab7fbad0c7d7 ("riscv: Fix unmet direct dependencies built based on SOC_VIRT") we select CONFIG_POWER_RESET=y along with CONFIG_SOC_VIRT, which is already in defconfig. This make setting CONFIG_POWER_RESET in the defconfigs redundant, so remove it to remain consistent with savedefconfig. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Sort CONFIG_BLK_DEV_BSGPalmer Dabbelt2022-01-052-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | This should have no functional change, it just sorts CONFIG_BLK_DEV_BSG the same way savedefconfig does. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Sort CONFIG_SURFACE_PLATFORMSPalmer Dabbelt2022-01-052-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | This should have no functional change, it just sorts CONFIG_SURFACE_PLATFORMS the same way savedefconfig does. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Sort CONFIG_MMCPalmer Dabbelt2022-01-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | This should have no functional change, it just sorts CONFIG_MMC the same way savedefconfig does. This only touches the rv64 defconfig because rv32_defconfig was already sorted correctly. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Sort CONFIG_PTP_1588_CLOCKPalmer Dabbelt2022-01-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This should have no functional change, it just sorts CONFIG_PTP_1588_CLOCK the same way savedefconfig does. This only touches the rv64 defconfig because rv32_defconfig was already sorted correctly. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Sort CONFIG_SOC_POLARFIREPalmer Dabbelt2022-01-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | This should have no functional change, it just sorts CONFIG_SOC_POLARFIRE the same way savedefconfig does. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Sort CONFIG_SYSFS_SYSCALLPalmer Dabbelt2022-01-052-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | This should have no functional change, it just sorts CONFIG_SYSFS_SYSCALL the same way savedefconfig does. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Sort CONFIG_BPF_SYSCALLPalmer Dabbelt2022-01-052-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | This should have no functional change, it just sorts CONFIG_BPF_SYSCALL the same way savedefconfig does. Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
| * | RISC-V: defconfigs: Set CONFIG_FB=y, for FB consolePalmer Dabbelt2022-01-052-0/+2
| |/ | | | | | | | | | | | | | | | | | | | | We have CONFIG_FRAMEBUFFER_CONSOLE=y in the defconfigs, but that depends on CONFIG_FB so it's not actually getting set. I'm assuming most users on real systems want a framebuffer console, so this enables CONFIG_FB to allow that to take effect. Fixes: 33c57c0d3c67 ("RISC-V: Add a basic defconfig") Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
* / RISC-V: Enable KVM in RV64 and RV32 defconfigs as a moduleAnup Patel2021-11-182-0/+4
|/ | | | | | | | | Let's enable KVM RISC-V in RV64 and RV32 defconfigs as module so that it always built along with the default kernel image. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
* riscv: defconfig: enable DRM_NOUVEAUHeinrich Schuchardt2021-10-271-3/+4
| | | | | | | | | | | Both RADEON and NOUVEAU graphics cards are supported on RISC-V. Enabling the one and not the other does not make sense. As typically at most one of RADEON, NOUVEAU, or VIRTIO GPU support will be needed DRM drivers should be compiled as modules. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* riscv: add rv32 and rv64 randconfig build targetsRandy Dunlap2021-10-042-0/+4
| | | | | | | | | | | | | | | Add the ability to do randconfig build targets for both rv32 and rv64. Based on a similar patch by Michael Ellerman for PowerPC. Usage: make ARCH=riscv rv32_randconfig or make ARCH=riscv rv64_randconfig Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* riscv: defconfig: enable NLS_CODEPAGE_437, NLS_ISO8859_1Heinrich Schuchardt2021-09-101-0/+2
| | | | | | | | | | | | | | The EFI system partition uses the FAT file system. Many distributions add an entry in /etc/fstab for the ESP. We must ensure that mounting does not fail. The default code page for FAT is 437 (cf. CONFIG_FAT_DEFAULT_CODEPAGE). The default IO character set is "iso8859-1" (cf. CONFIG_NLS_ISO8859_1). So let's enable NLS_CODEPAGE_437 and NLS_ISO8859_1 in defconfig. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* riscv: defconfig: enable BLK_DEV_NVMEHeinrich Schuchardt2021-09-101-0/+2
| | | | | | | | | | | | | NVMe is a non-volatile storage media attached via PCIe. As NVMe has much higher throughput than other block devices like SATA it is a must have for RISC-V. Enable CONFIG_BLK_DEV_NVME. The HiFive Unmatched is a board providing M.2 slots for NVMe drives. Enable CONFIG_PCIE_FU740. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* block: remove CONFIG_DEBUG_BLOCK_EXT_DEVTChristoph Hellwig2021-08-242-2/+0
| | | | | | | | | This might have been a neat debug aid when the extended dev_t was added, but that time is long gone. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210824075216.1179406-3-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* RISC-V: Enable Microchip PolarFire ICICLE SoCAtish Patra2021-04-261-0/+4
| | | | | | | | | | Enable Microchip PolarFire ICICLE soc config in defconfig. It allows the default upstream kernel to boot on PolarFire ICICLE board. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Bin Meng <bin.meng@windriver.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* RISC-V: Enable CPU Hotplug in defconfigsAnup Patel2021-02-262-0/+2
| | | | | | | | The CPU hotplug support has been tested on QEMU, Spike, and SiFive Unleashed so let's enable it by default in RV32 and RV64 defconfigs. Signed-off-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* Merge tag 'riscv-for-linus-5.12-mw0' of ↵Linus Torvalds2021-02-262-9/+129
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: "A handful of new RISC-V related patches for this merge window: - A check to ensure drivers are properly using uaccess. This isn't manifesting with any of the drivers I'm currently using, but may catch errors in new drivers. - Some preliminary support for the FU740, along with the HiFive Unleashed it will appear on. - NUMA support for RISC-V, which involves making the arm64 code generic. - Support for kasan on the vmalloc region. - A handful of new drivers for the Kendryte K210, along with the DT plumbing required to boot on a handful of K210-based boards. - Support for allocating ASIDs. - Preliminary support for kernels larger than 128MiB. - Various other improvements to our KASAN support, including the utilization of huge pages when allocating the KASAN regions. We may have already found a bug with the KASAN_VMALLOC code, but it's passing my tests. There's a fix in the works, but that will probably miss the merge window. * tag 'riscv-for-linus-5.12-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (75 commits) riscv: Improve kasan population by using hugepages when possible riscv: Improve kasan population function riscv: Use KASAN_SHADOW_INIT define for kasan memory initialization riscv: Improve kasan definitions riscv: Get rid of MAX_EARLY_MAPPING_SIZE soc: canaan: Sort the Makefile alphabetically riscv: Disable KSAN_SANITIZE for vDSO riscv: Remove unnecessary declaration riscv: Add Canaan Kendryte K210 SD card defconfig riscv: Update Canaan Kendryte K210 defconfig riscv: Add Kendryte KD233 board device tree riscv: Add SiPeed MAIXDUINO board device tree riscv: Add SiPeed MAIX GO board device tree riscv: Add SiPeed MAIX DOCK board device tree riscv: Add SiPeed MAIX BiT board device tree riscv: Update Canaan Kendryte K210 device tree dt-bindings: add resets property to dw-apb-timer dt-bindings: fix sifive gpio properties dt-bindings: update sifive uart compatible string dt-bindings: update sifive clint compatible string ...
| * riscv: Add Canaan Kendryte K210 SD card defconfigDamien Le Moal2021-02-221-0/+92
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nommu_k210_defconfig default configuration allows booting a Canaan Kendryte K210 SoC based boards using an embedded intramfs cpio file. Modifying this configuration to enable support for the board SD card is not trivial for all users. To help beginners getting started with these boards, add the nommu_k210_sdcard_defconfig default configuration file to set all configuration options necessary to use the board mmc-spi sd card for the root file system. This new configuration adds support for the block layer, the mmc-spi driver and modifies the boot options to specify the rootfs device as mmcblk0p1 (first partition of the sd card block device). The ext2 file system is selected by default to encourage its use as that results in only about 4KB added to the kernel image size. As ext2 does not have journaling, the boot options specify a read-only mount of the file system. Similarly to the smaller nommu_k210_defconfig, this new default configuration disables virtual terminal support to reduce the kernel image size. The default device tree selected is unchanged, specifying the simple "k210_generic" device tree file. The user must change this setting to specify the device tree suitable for the board being used (sipeed_maix_bit, sipeed_maix_dock, sipeed_maix_go, sipeed_maixduino or canaan_kd233). Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
| * riscv: Update Canaan Kendryte K210 defconfigDamien Le Moal2021-02-221-8/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the Kendryte k210 nommu default configuration file (nommu_k210_defconfig) to include device drivers for reset, reboot, I2C, SPI, gpio and LEDs support. Virtual Terminal support is also disabled as no terminal devices are supported and enabled. Disabling CONFIG_VT (removing the no longer needed override for CONFIG_VGA_CONSOLE) reduces the kernel image size by about 65 KB. This default configuration remains suitable for a system using an initramfs cpio file linked into the kernel image. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
| * riscv: Use vendor name for K210 SoC supportDamien Le Moal2021-01-141-1/+1
| | | | | | | | | | | | | | | | | | | | Rename configuration options and directories related to the Kendryte K210 SoC to use the SoC vendor name (canaan) instead of the "kendryte" branding name. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* | riscv: defconfig: enable gpio support for HiFive UnleashedSagar Shrikant Kadam2021-01-131-0/+2
|/ | | | | | | | | Ethernet phy VSC8541-01 on HiFive Unleashed has its reset line connected to a gpio, so enable GPIO driver's required to reset the phy. Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* RISC-V: Add EFI stub support.Atish Patra2020-10-021-0/+1
| | | | | | | | | | | | | | | Add a RISC-V architecture specific stub code that actually copies the actual kernel image to a valid address and jump to it after boot services are terminated. Enable UEFI related kernel configs as well for RISC-V. Signed-off-by: Atish Patra <atish.patra@wdc.com> Link: https://lore.kernel.org/r/20200421033336.9663-4-atish.patra@wdc.com [ardb: - move hartid fetch into check_platform_features() - use image_size not reserve_size - select ISA_C - do not use dram_base] Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* riscv: Add SiFive drivers to rv32_defconfigBin Meng2020-08-201-0/+5
| | | | | | | | | | | This adds SiFive drivers to rv32_defconfig, to keep in sync with the 64-bit config. This is useful when testing 32-bit kernel with QEMU 'sifive_u' 32-bit machine. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* RISC-V: Remove CLINT related code from timer and archAnup Patel2020-08-201-5/+2
| | | | | | | | | | | | | | | | | | | | Right now the RISC-V timer driver is convoluted to support: 1. Linux RISC-V S-mode (with MMU) where it will use TIME CSR for clocksource and SBI timer calls for clockevent device. 2. Linux RISC-V M-mode (without MMU) where it will use CLINT MMIO counter register for clocksource and CLINT MMIO compare register for clockevent device. We now have a separate CLINT timer driver which also provide CLINT based IPI operations so let's remove CLINT MMIO related code from arch/riscv directory and RISC-V timer driver. Signed-off-by: Anup Patel <anup.patel@wdc.com> Tested-by: Emil Renner Berhing <kernel@esmil.dk> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* riscv: Add jump-label implementationEmil Renner Berthing2020-07-304-0/+4
| | | | | | | | | | Add jump-label implementation based on the ARM64 version and add CONFIG_JUMP_LABEL=y to the defconfigs. Signed-off-by: Emil Renner Berthing <kernel@esmil.dk> Reviewed-by: Björn Töpel <bjorn.topel@gmail.com> Tested-by: Björn Töpel <bjorn.topel@gmail.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* riscv: K210: Update defconfigDamien Le Moal2020-05-181-5/+2
| | | | | | | | Update the Kendryte K210 default kernel configuration file nommu_k210_defconfig to enable builtin DTB by default. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* Merge tag 'riscv-for-linus-5.7' of ↵Linus Torvalds2020-04-093-0/+70
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: "This contains a handful of new features: - Partial support for the Kendryte K210. There are still a few outstanding issues that I have patches for, but I don't actually have a board to test them so they're not included yet. - SBI v0.2 support. - Fixes to support for building with LLVM-based toolchains. The resulting images are known not to boot yet. I don't anticipate a part two, but I'll probably have something early in the RCs to finish up the K210 support" * tag 'riscv-for-linus-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (38 commits) riscv: create a loader.bin boot image for Kendryte SoC riscv: Kendryte K210 default config riscv: Add Kendryte K210 device tree riscv: Select required drivers for Kendryte SOC riscv: Add Kendryte K210 SoC support riscv: Add SOC early init support riscv: Unaligned load/store handling for M_MODE RISC-V: Support cpu hotplug RISC-V: Add supported for ordered booting method using HSM RISC-V: Add SBI HSM extension definitions RISC-V: Export SBI error to linux error mapping function RISC-V: Add cpu_ops and modify default booting method RISC-V: Move relocate and few other functions out of __init RISC-V: Implement new SBI v0.2 extensions RISC-V: Introduce a new config for SBI v0.1 RISC-V: Add SBI v0.2 extension definitions RISC-V: Add basic support for SBI v0.2 RISC-V: Mark existing SBI as 0.1 SBI. riscv: Use macro definition instead of magic number riscv: Add support to dump the kernel page tables ...
| * riscv: Kendryte K210 default configDamien Le Moal2020-04-031-0/+68
| | | | | | | | | | | | | | | | This patch adds a defconfig file to build No-MMU kernels meant for boards based on the Kendryte K210 SoC. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
| * riscv: Delete CONFIG_SYSFS_SYSCALL from defconfigsDeepa Dinamani2020-03-032-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | According to init/Kconfig: "sys_sysfs is an obsolete system call no longer supported in libc. Note that disabling this option is more secure but might break compatibility with some systems." This syscall is not required for new architectures. Since the config defaults to 'y'. Set this to 'n' exlicitly. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* | RISC-V: Only select essential drivers for SOC_VIRT configAnup Patel2020-03-262-2/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The kconfig select causes build failues for SOC_VIRT config becaus we are selecting lot of VIRTIO drivers without selecting all required dependencies. Better approach is to only select essential drivers from SOC_VIRT config option and enable required VIRTIO drivers using defconfigs. Fixes: 759bdc168181 ("RISC-V: Add kconfig option for QEMU virt machine") Signed-off-by: Anup Patel <anup.patel@wdc.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* | RISC-V: Select Goldfish RTC driver for QEMU virt machineAnup Patel2020-03-052-0/+2
| | | | | | | | | | | | | | | | | | | | | | We select Goldfish RTC driver using QEMU virt machine kconfig option to access RTC device on QEMU virt machine. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* | RISC-V: Select SYSCON Reboot and Poweroff for QEMU virt machineAnup Patel2020-03-052-0/+2
| | | | | | | | | | | | | | | | | | | | | | The SYSCON Reboot and Poweroff drivers can be used on QEMU virt machine to reboot or poweroff the system hence we select these drivers using QEMU virt machine kconfig option. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* | RISC-V: Enable QEMU virt machine support in defconfigsAnup Patel2020-03-052-29/+2
|/ | | | | | | | | | | | | We have kconfig option for QEMU virt machine so let's enable it in RV32 and RV64 defconfigs. Also, we remove various VIRTIO configs from RV32 and RV64 defconfigs because these are now selected by QEMU virt machine kconfig option. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
* Merge branch 'next/defconfig-add-debug' into for-nextPaul Walmsley2019-11-222-0/+48
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| * riscv: defconfigs: enable more debugging optionsPaul Walmsley2019-11-222-0/+46
| | | | | | | | | | | | | | | | Enable more debugging options in the RISC-V defconfigs to help kernel developers catch problems with patches earlier in the development cycle. Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
| * riscv: defconfigs: enable debugfsPaul Walmsley2019-11-222-0/+2
| | | | | | | | | | | | debugfs is broadly useful, so enable it in the RISC-V defconfigs. Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
* | riscv: add nommu supportChristoph Hellwig2019-11-171-0/+78
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kernel runs in M-mode without using page tables, and thus can't run bare metal without help from additional firmware. Most of the patch is just stubbing out code not needed without page tables, but there is an interesting detail in the signals implementation: - The normal RISC-V syscall ABI only implements rt_sigreturn as VDSO entry point, but the ELF VDSO is not supported for nommu Linux. We instead copy the code to call the syscall onto the stack. In addition to enabling the nommu code a new defconfig for a small kernel image that can run in nommu mode on qemu is also provided, to run a kernel in qemu you can use the following command line: qemu-system-riscv64 -smp 2 -m 64 -machine virt -nographic \ -kernel arch/riscv/boot/loader \ -drive file=rootfs.ext2,format=raw,id=hd0 \ -device virtio-blk-device,drive=hd0 Contains contributions from Damien Le Moal <Damien.LeMoal@wdc.com>. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Anup Patel <anup@brainfault.org> [paul.walmsley@sifive.com: updated to apply; add CONFIG_MMU guards around PCI_IOBASE definition to fix build issues; fixed checkpatch issues; move the PCI_IO_* and VMEMMAP address space macros along with the others; resolve sparse warning] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
* RISC-V: Enable VIRTIO drivers in RV64 and RV32 defconfigAnup Patel2019-09-192-0/+22
| | | | | | | | | | | This patch enables more VIRTIO drivers (such as console, rpmsg, 9p, rng, etc.) which are usable on KVM RISC-V Guest and Xvisor RISC-V Guest. Signed-off-by: Anup Patel <anup.patel@wdc.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alexander Graf <graf@amazon.com> Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
* riscv: defconfig: Update the defconfigAlistair Francis2019-08-131-0/+2
| | | | | | | | Update the defconfig: - Add CONFIG_HW_RANDOM=y and CONFIG_HW_RANDOM_VIRTIO=y to enable VirtIORNG when running on QEMU Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
* riscv: rv32_defconfig: Update the defconfigAlistair Francis2019-08-131-0/+3
| | | | | | | | | Update the rv32_defconfig: - Add 'CONFIG_DEVTMPFS_MOUNT=y' to match the RISC-V defconfig - Add CONFIG_HW_RANDOM=y and CONFIG_HW_RANDOM_VIRTIO=y to enable VirtIORNG when running on QEMU Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
* riscv: defconfig: align RV64 defconfig to the output of "make savedefconfig"Paul Walmsley2019-07-311-5/+5
| | | | | | | | Align the RV64 defconfig to the output of "make savedefconfig" to avoid unnecessary deltas for future defconfig patches. This patch should have no runtime functional impact. Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
* riscv: defconfig: enable SOC_SIFIVELoys Ollivier2019-07-011-5/+1
| | | | | | | | | | Enable SOC_SIFIVE so the default upstream config is bootable on the SiFive Unleashed Board. And have basic support for future boards based on the same SoC. Signed-off-by: Loys Ollivier <lollivier@baylibre.com> Reviewed-by: Palmer Dabbelt <palmer@sifive.com> [paul.walmsley@sifive.com: updated to apply] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-06 22:18:15 +0000