[GIT PULL] RISC-V Patches for the 5.7 Merge Window, Part 1

[Palmer Dabbelt]

The following changes since commit 98d54f81e36ba3bf92172791eba5ca5bd813989b:

  Linux 5.6-rc4 (2020-03-01 16:38:46 -0600)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git tags/riscv-for-linus-5.7

for you to fetch changes up to 37809df4b1c88927fe944eb766e0553811c51f64:

  riscv: create a loader.bin boot image for Kendryte SoC (2020-04-03 10:50:17 -0700)

----------------------------------------------------------------
RISC-V Patches for the 5.7 Merge Window, Part 1

This tag contains the patches I'd like to target for 5.7.  It has 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.

This builds and boots for me.  There is one merge conflict, it's just a Kconfig
merge issue.  I can publish a resolved branch if you'd like.

I don't anticipate a part two, but I'll probably have something early in the
RCs to finish up the K210 support.

----------------------------------------------------------------
Alexandre Ghiti (1):
      riscv: Use p*d_leaf macros to define p*d_huge

Atish Patra (12):
      RISC-V: Move all address space definition macros to one place
      RISC-V: Mark existing SBI as 0.1 SBI.
      RISC-V: Add basic support for SBI v0.2
      RISC-V: Add SBI v0.2 extension definitions
      RISC-V: Introduce a new config for SBI v0.1
      RISC-V: Implement new SBI v0.2 extensions
      RISC-V: Move relocate and few other functions out of __init
      RISC-V: Add cpu_ops and modify default booting method
      RISC-V: Export SBI error to linux error mapping function
      RISC-V: Add SBI HSM extension definitions
      RISC-V: Add supported for ordered booting method using HSM
      RISC-V: Support cpu hotplug

Christoph Hellwig (2):
      riscv: Add Kendryte K210 SoC support
      riscv: create a loader.bin boot image for Kendryte SoC

Damien Le Moal (5):
      riscv: Unaligned load/store handling for M_MODE
      riscv: Add SOC early init support
      riscv: Select required drivers for Kendryte SOC
      riscv: Add Kendryte K210 device tree
      riscv: Kendryte K210 default config

Deepa Dinamani (1):
      riscv: Delete CONFIG_SYSFS_SYSCALL from defconfigs

Guo Ren (1):
      riscv: Use flush_icache_mm for flush_icache_user_range

Palmer Dabbelt (4):
      RISC-V: Stop putting .sbss in .sdata
      RISC-V: Stop relying on GCC's register allocator's hueristics
      RISC-V: Inline the assembly register save/restore macros
      RISC-V: Stop using LOCAL for the uaccess fixups

Zong Li (12):
      riscv: force hart_lottery to put in .sdata section
      riscv: add ARCH_HAS_SET_MEMORY support
      riscv: add ARCH_HAS_SET_DIRECT_MAP support
      riscv: add ARCH_SUPPORTS_DEBUG_PAGEALLOC support
      riscv: move exception table immediately after RO_DATA
      riscv: add alignment for text, rodata and data sections
      riscv: add STRICT_KERNEL_RWX support
      riscv: add macro to get instruction length
      riscv: introduce interfaces to patch kernel code
      riscv: patch code by fixmap mapping
      riscv: Add support to dump the kernel page tables
      riscv: Use macro definition instead of magic number

 arch/riscv/Kconfig                      |  26 +-
 arch/riscv/Kconfig.socs                 |  34 ++
 arch/riscv/Makefile                     |   6 +-
 arch/riscv/boot/Makefile                |   3 +
 arch/riscv/boot/dts/Makefile            |   1 +
 arch/riscv/boot/dts/kendryte/Makefile   |   2 +
 arch/riscv/boot/dts/kendryte/k210.dts   |  23 ++
 arch/riscv/boot/dts/kendryte/k210.dtsi  | 123 +++++++
 arch/riscv/configs/defconfig            |   1 +
 arch/riscv/configs/nommu_k210_defconfig |  68 ++++
 arch/riscv/configs/rv32_defconfig       |   1 +
 arch/riscv/include/asm/bug.h            |   8 +
 arch/riscv/include/asm/cacheflush.h     |   2 +-
 arch/riscv/include/asm/cpu_ops.h        |  46 +++
 arch/riscv/include/asm/current.h        |   5 +-
 arch/riscv/include/asm/fixmap.h         |   2 +
 arch/riscv/include/asm/kasan.h          |   2 +-
 arch/riscv/include/asm/patch.h          |  12 +
 arch/riscv/include/asm/pgtable.h        |  80 +++--
 arch/riscv/include/asm/ptdump.h         |  11 +
 arch/riscv/include/asm/sbi.h            | 195 +++++++----
 arch/riscv/include/asm/set_memory.h     |  48 +++
 arch/riscv/include/asm/smp.h            |  24 ++
 arch/riscv/include/asm/soc.h            |  23 ++
 arch/riscv/kernel/Makefile              |  13 +-
 arch/riscv/kernel/cpu-hotplug.c         |  87 +++++
 arch/riscv/kernel/cpu_ops.c             |  46 +++
 arch/riscv/kernel/cpu_ops_sbi.c         | 115 +++++++
 arch/riscv/kernel/cpu_ops_spinwait.c    |  43 +++
 arch/riscv/kernel/entry.S               | 143 ++++----
 arch/riscv/kernel/ftrace.c              |  13 +-
 arch/riscv/kernel/head.S                | 180 ++++++----
 arch/riscv/kernel/patch.c               | 120 +++++++
 arch/riscv/kernel/process.c             |   5 +-
 arch/riscv/kernel/sbi.c                 | 575 +++++++++++++++++++++++++++++++-
 arch/riscv/kernel/setup.c               |  32 +-
 arch/riscv/kernel/smpboot.c             |  53 +--
 arch/riscv/kernel/soc.c                 |  28 ++
 arch/riscv/kernel/stacktrace.c          |   7 +-
 arch/riscv/kernel/traps.c               |  32 +-
 arch/riscv/kernel/traps_misaligned.c    | 370 ++++++++++++++++++++
 arch/riscv/kernel/vmlinux.lds.S         |  23 +-
 arch/riscv/lib/uaccess.S                |   6 +-
 arch/riscv/mm/Makefile                  |   3 +-
 arch/riscv/mm/hugetlbpage.c             |   6 +-
 arch/riscv/mm/init.c                    |  44 +++
 arch/riscv/mm/pageattr.c                | 187 +++++++++++
 arch/riscv/mm/ptdump.c                  | 317 ++++++++++++++++++
 drivers/soc/Kconfig                     |   1 +
 drivers/soc/Makefile                    |   1 +
 drivers/soc/kendryte/Kconfig            |  14 +
 drivers/soc/kendryte/Makefile           |   3 +
 drivers/soc/kendryte/k210-sysctl.c      | 248 ++++++++++++++
 include/dt-bindings/clock/k210-clk.h    |  20 ++
 54 files changed, 3154 insertions(+), 327 deletions(-)
 create mode 100644 arch/riscv/boot/dts/kendryte/Makefile
 create mode 100644 arch/riscv/boot/dts/kendryte/k210.dts
 create mode 100644 arch/riscv/boot/dts/kendryte/k210.dtsi
 create mode 100644 arch/riscv/configs/nommu_k210_defconfig
 create mode 100644 arch/riscv/include/asm/cpu_ops.h
 create mode 100644 arch/riscv/include/asm/patch.h
 create mode 100644 arch/riscv/include/asm/ptdump.h
 create mode 100644 arch/riscv/include/asm/set_memory.h
 create mode 100644 arch/riscv/include/asm/soc.h
 create mode 100644 arch/riscv/kernel/cpu-hotplug.c
 create mode 100644 arch/riscv/kernel/cpu_ops.c
 create mode 100644 arch/riscv/kernel/cpu_ops_sbi.c
 create mode 100644 arch/riscv/kernel/cpu_ops_spinwait.c
 create mode 100644 arch/riscv/kernel/patch.c
 create mode 100644 arch/riscv/kernel/soc.c
 create mode 100644 arch/riscv/kernel/traps_misaligned.c
 create mode 100644 arch/riscv/mm/pageattr.c
 create mode 100644 arch/riscv/mm/ptdump.c
 create mode 100644 drivers/soc/kendryte/Kconfig
 create mode 100644 drivers/soc/kendryte/Makefile
 create mode 100644 drivers/soc/kendryte/k210-sysctl.c
 create mode 100644 include/dt-bindings/clock/k210-clk.h