From: Anup Patel <a...@brainfault.org> This patchset does: 1. Moves MM related code from kernel/setup.c to mm/init.c 2. Implements compile-time fixed mappings
Using fixed mappings available, we can now get earlyprints even without SBI calls. For example, we can use kernel parameter "earlycon=uart8250,mmio,0x10000000" to get early prints on QEMU virt machine without using SBI calls. The patchset is tested on QEMU virt machine. It is based on Linux-5.0-rc6 and can be found at riscv_fixmap_v3 branch of: https://github.com/avpatel/linux.git. Changes since v2: - Fixed commit description of PATCH6 - Ensured commit description of all PATCH use upto 72 characters per line Changes since v1: - Use more characters per line in changelog of PATCH3 - Removed #ifndef __ASSEMBLY__ from PATCH5 - Use more characters per line in commets of PATCH5 - Added PATCH6 to implement keepinitrd kernel parameter Anup Patel (6): RISC-V: Move free_initrd_mem() to kernel/setup.c RISC-V: Setup init_mm before parse_early_param() RISC-V: Move setup_bootmem() to mm/init.c RISC-V: Move setup_vm() to mm/init.c RISC-V: Implement compile-time fixed mappings RISC-V: Implement keepinitrd kernel parameter arch/riscv/Kconfig | 3 + arch/riscv/include/asm/fixmap.h | 44 +++++++++++ arch/riscv/include/asm/pgtable.h | 1 + arch/riscv/kernel/setup.c | 114 ++++++---------------------- arch/riscv/mm/init.c | 124 ++++++++++++++++++++++++++++++- 5 files changed, 189 insertions(+), 97 deletions(-) create mode 100644 arch/riscv/include/asm/fixmap.h -- 2.17.1
