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Kernel/armv7 - Added debug serial input
[tpg/acess2.git]
/
KernelLand
/
Kernel
/
arch
/
armv7
/
start.S
diff --git
a/KernelLand/Kernel/arch/armv7/start.S
b/KernelLand/Kernel/arch/armv7/start.S
index
71534f5
..
8193b31
100644
(file)
--- a/
KernelLand/Kernel/arch/armv7/start.S
+++ b/
KernelLand/Kernel/arch/armv7/start.S
@@
-67,13
+67,17
@@
_start:
@
mrc p15, 0, r0, c0, c1, 1
and r0, #0xF0
@
mrc p15, 0, r0, c0, c1, 1
and r0, #0xF0
+ beq .no_sec_ext
@ - Present
@ - Present
- ldrne r0,=KERNEL_BASE
- mcrne p15, 0, r0, c12, c0, 0 @ Set the VBAR (brings exceptions into high memory)
+ ldr r0,=KERNEL_BASE
+ mcr p15, 0, r0, c12, c0, 0 @ Set the VBAR (brings exceptions into high memory)
+ b .exceptions_vectored
+.no_sec_ext:
@ - Absent
@ - Absent
- mrceq p15, 0, r0, c1, c0, 0 @ Set SCTLR.V
- orreq r0, #0x2000
- mcreq p15, 0, r0, c1, c0, 0
+ mrc p15, 0, r0, c1, c0, 0 @ Set SCTLR.V
+ orr r0, #0x2000
+ mcr p15, 0, r0, c1, c0, 0
+.exceptions_vectored:
mov r1, #'-'
str r1, [r2]
mov r1, #'-'
str r1, [r2]
UCC
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