blob: 83b017c29dda18f783410d4915c3af129631e05e (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
#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 */
lla t0, smp_init_stacks
slli t1, a0, RW_SHIFT
add t0, t0, t1
lr sp, 0(t0)
mv tp, sp
/* jump to C to handle rest of bringup */
lla t0, core_bringup
jr t0
|
