diff options
| author | Palmer Dabbelt <palmer@sifive.com> | 2019-03-04 11:41:36 -0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2019-03-04 11:47:04 -0800 |
| commit | 13fd5de06514458eb320188b7a815d65696efd99 (patch) | |
| tree | faa6d1ce1c20eb3b909ccecf481b865869463083 /arch/riscv/Kconfig | |
| parent | f7ccc35aa3bd728ad8451f4d06e801cfe5c5498c (diff) | |
| parent | 823900cd01301c4720b23afa9f3d08036e07245a (diff) | |
RISC-V: Fixmap support and MM cleanups
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, we get earlyprints even without SBI calls.
For example, we can now 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.
Palmer: It looks like some of the code movement here conflicted with the
patches to move hartid handling around. As far as I can tell the only
changed code was in smp_setup_processor_id(), and I've kept the one in
smp.c.
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index b60f4e3e36f4..ceed055179c8 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -89,6 +89,9 @@ config GENERIC_CSUM config GENERIC_HWEIGHT def_bool y +config FIX_EARLYCON_MEM + def_bool y + config PGTABLE_LEVELS int default 3 if 64BIT |