diff options
Diffstat (limited to 'kernel/kernelvec.S')
| -rw-r--r-- | kernel/kernelvec.S | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/kernelvec.S b/kernel/kernelvec.S index 0efde8b..9aabe96 100644 --- a/kernel/kernelvec.S +++ b/kernel/kernelvec.S @@ -86,6 +86,11 @@ kernelvec: .globl machinevec .align 4 machinevec: + # start.c has set up the memory that mscratch points to: + # scratch[0,8,16] : register save area. + # scratch[32] : address of CLINT's MTIMECMP register. + # scratch[40] : desired interval between interrupts. + csrrw a0, mscratch, a0 sd a1, 0(a0) sd a2, 8(a0) |