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[arch][arm64] add support for 64k pages

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Already worked, just needed to set up the address space size and create
a new project.
This commit is contained in:
Travis Geiselbrecht
2025-08-31 21:48:09 -07:00
parent fff0f2a740
commit c48cfcb5d0
3 changed files with 22 additions and 2 deletions
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8
arch/arm64/rules.mk
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@@ -52,19 +52,25 @@ ARM64_PAGE_SIZE ?= 4096
# platform/target/project is allowed to override the page size the kernel
# and user space will run at.
ifeq ($(ARM64_PAGE_SIZE), 4096)
# 48 bits of kernel and user address space (4 levels of page tables)
KERNEL_ASPACE_BASE ?= 0xffff000000000000
KERNEL_ASPACE_SIZE ?= 0x0001000000000000
USER_ASPACE_BASE ?= 0x0000000001000000
USER_ASPACE_SIZE ?= 0x0000fffffe000000
else ifeq ($(ARM64_PAGE_SIZE), 16384)
# 47 bits of kernel and user address space (3 levels of page tables)
GLOBAL_DEFINES += ARM64_LARGE_PAGESIZE_16K=1
KERNEL_ASPACE_BASE ?= 0xffff800000000000
KERNEL_ASPACE_SIZE ?= 0x0000800000000000
USER_ASPACE_BASE ?= 0x0000000001000000
USER_ASPACE_SIZE ?= 0x00007ffffe000000
else ifeq ($(ARM64_PAGE_SIZE), 65536)
# 42 bits of kernel and user address space (2 levels of page tables)
GLOBAL_DEFINES += ARM64_LARGE_PAGESIZE_64K=1
$(error fix for 64k)
KERNEL_ASPACE_BASE ?= 0xfffffc0000000000
KERNEL_ASPACE_SIZE ?= 0x0000040000000000
USER_ASPACE_BASE ?= 0x0000000001000000
USER_ASPACE_SIZE ?= 0x000003fffe000000
else
$(error unsupported ARM64_PAGE_SIZE)
endif