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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/core_bringup.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/core_bringup.S')
| -rw-r--r-- | arch/riscv64/kernel/core_bringup.S | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/riscv64/kernel/core_bringup.S b/arch/riscv64/kernel/core_bringup.S index 83b017c..8a5a6f5 100644 --- a/arch/riscv64/kernel/core_bringup.S +++ b/arch/riscv64/kernel/core_bringup.S @@ -12,12 +12,17 @@ riscv_bringup: sfence.vma /* fetch the stack allocated to us at our hart index in smp_init_stacks */ - lla t0, smp_init_stacks + lui t0, %hi(smp_init_stacks) + addi t0, t0, %lo(smp_init_stacks) slli t1, a0, RW_SHIFT add t0, t0, t1 lr sp, 0(t0) mv tp, sp + /* calculate actual address in kernelspace where we should jump to */ + /* a0 has RAM base */ + lui t0, %hi(core_bringup) + addi t0, t0, %lo(core_bringup) + /* jump to C to handle rest of bringup */ - lla t0, core_bringup jr t0 |