7c9906a5ff
Implements both SV39 and SV48. No 32bit support yet. Currently implements basic setup of paging in start.S by mapping a large chunk of memory into both an identity map and to the bottom of the kernel address space. Run the kernel out of this physical mapping. Added basic arch mmu support for querying existing paging structures and mapping 4K pages. No unmap support as of yet. System boots with mmu on when running supervisor test on qemu. Untested on real hardware as of yet.
55 lines
1.3 KiB
Makefile
55 lines
1.3 KiB
Makefile
LOCAL_DIR := $(GET_LOCAL_DIR)
|
|
|
|
MODULE := $(LOCAL_DIR)
|
|
|
|
ARCH := riscv
|
|
SUBARCH ?= 32
|
|
RISCV_MODE ?= machine
|
|
WITH_SMP ?= 1
|
|
SMP_MAX_CPUS ?= 8
|
|
|
|
ifeq ($(RISCV_MODE),supervisor)
|
|
ifeq ($(SUBARCH),32)
|
|
RISCV_MMU ?= sv32
|
|
else
|
|
RISCV_MMU ?= sv48
|
|
endif
|
|
endif
|
|
|
|
MODULE_DEPS += lib/cbuf
|
|
MODULE_DEPS += lib/fdt
|
|
MODULE_DEPS += lib/fdtwalk
|
|
MODULE_DEPS += dev/virtio/block
|
|
MODULE_DEPS += dev/virtio/gpu
|
|
MODULE_DEPS += dev/virtio/net
|
|
|
|
MODULE_SRCS += $(LOCAL_DIR)/platform.c
|
|
MODULE_SRCS += $(LOCAL_DIR)/plic.c
|
|
MODULE_SRCS += $(LOCAL_DIR)/uart.c
|
|
|
|
MEMBASE ?= 0x80000000
|
|
MEMSIZE ?= 0x01000000 # default to 16MB
|
|
ifeq ($(RISCV_MODE),supervisor)
|
|
# offset the kernel to account for OpenSBI using the bottom
|
|
KERNEL_LOAD_OFFSET ?= 0x00200000 # kernel load offset
|
|
endif
|
|
|
|
# sifive_e or _u?
|
|
GLOBAL_DEFINES += PLATFORM_${VARIANT}=1
|
|
|
|
# set some global defines based on capability
|
|
GLOBAL_DEFINES += ARCH_RISCV_CLINT_BASE=0x02000000
|
|
GLOBAL_DEFINES += ARCH_RISCV_MTIME_RATE=10000000
|
|
|
|
# we're going to read the default memory map from a FDT
|
|
GLOBAL_DEFINES += NOVM_DEFAULT_ARENA=0
|
|
|
|
# we can revert to a poll based uart spin routine
|
|
GLOBAL_DEFINES += PLATFORM_SUPPORTS_PANIC_SHELL=1
|
|
|
|
# do not need to implement any cache ops
|
|
# (for now, since there are no hw accellerated qemu machines)
|
|
GLOBAL_DEFINES += RISCV_NO_CACHE_OPS=1
|
|
|
|
include make/module.mk
|