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-rc1 and can be found at riscv_fixmap_v1 branch of: https://github.com/avpatel/linux.git. Anup Patel (5): 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 arch/riscv/Kconfig | 3 + arch/riscv/include/asm/fixmap.h | 52 +++++++++++++ arch/riscv/include/asm/pgtable.h | 1 + arch/riscv/kernel/setup.c | 106 +++----------------------- arch/riscv/mm/init.c | 123 ++++++++++++++++++++++++++++++- 5 files changed, 186 insertions(+), 99 deletions(-) create mode 100644 arch/riscv/include/asm/fixmap.h -- 2.17.1
