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Anup Patel <apatel@ventanamicro.com> says: The SBI v2.0 specification is now frozen. The SBI v2.0 specification defines SBI debug console (DBCN) extension which replaces the legacy SBI v0.1 functions sbi_console_putchar() and sbi_console_getchar(). (Refer v2.0-rc5 at https://github.com/riscv-non-isa/riscv-sbi-doc/releases) This series adds support for SBI debug console (DBCN) extension in Linux RISC-V. To try these patches with KVM RISC-V, use KVMTOOL from the riscv_zbx_zicntr_smstateen_condops_v1 branch at: https://github.com/avpatel/kvmtool.git * b4-shazam-merge: RISC-V: Enable SBI based earlycon support tty: Add SBI debug console support to HVC SBI driver tty/serial: Add RISC-V SBI debug console based earlycon RISC-V: Add SBI debug console helper routines RISC-V: Add stubs for sbi_console_putchar/getchar() Link: https://lore.kernel.org/r/20231124070905.1043092-1-apatel@ventanamicro.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.