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#include "asm.h"
/* pic forces core_bringup to be placed in .got that we can access both from
* direct mapped and virtual memory. Which is kind of strange, as core_bringup()
* is fixed in place by the VM, so it could be possible to just load the address
* directly into a register, but apparently that's annoying to do */
.option pic
.global riscv_bringup
riscv_bringup:
/* immediately switch to virtual memory through argument in a1 */
csrw satp, a1
sfence.vma
/* fetch the stack allocated to us at our hart index in 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 */
jr t0
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