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| author | Kimplul <kimi.h.kuparinen@gmail.com> | 2024-07-07 07:00:43 +0300 |
|---|---|---|
| committer | Kimplul <kimi.h.kuparinen@gmail.com> | 2024-07-07 07:00:43 +0300 |
| commit | 122374c362ba8bb9082385da3c82e264ab594f15 (patch) | |
| tree | 0123fad5464aaf64f522d48f5069b35b90207aae /arch/riscv64/kernel/start.S | |
| parent | 03e12129927b0deba537a11bb5575bef93c57d0f (diff) | |
| download | kmi-122374c362ba8bb9082385da3c82e264ab594f15.tar.gz kmi-122374c362ba8bb9082385da3c82e264ab594f15.zip | |
smp now seems to work
+ Had some minor issues with a wraparound of size_t that effectively
meant that some regions were allocated twice. Also, booting should be
a bit more reliable now, turned out that the previous iteration of the
booting was just accidentally working due to the kernel being placed
'close enough' in RAM to where it was linked to. Fixed by allocating a
vmem of O1 that maps the kernel to a 2MiB boundary at boot, pretty
nifty.
Diffstat (limited to 'arch/riscv64/kernel/start.S')
| -rw-r--r-- | arch/riscv64/kernel/start.S | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/riscv64/kernel/start.S b/arch/riscv64/kernel/start.S index 73a442e..5a2ed61 100644 --- a/arch/riscv64/kernel/start.S +++ b/arch/riscv64/kernel/start.S @@ -24,12 +24,11 @@ ret .section .text -/* a0 is fdt, a1 is load_addr, a2 is d, a3 is ram_base, a4 is DMAP */ +/* a0 is fdt, a1 is load_addr, a2 is d, a3 is ram_base */ .global to_kernelspace to_kernelspace: -lla t0, kernel -add t0, t0, a4 -sub t0, t0, a3 -add sp, sp, a4 -sub sp, sp, a3 +li t1, VM_DMAP +add sp, sp, t1 +lui t0, %hi(kernel) +addi t0, t0, %lo(kernel) jr t0 |