Set IVPR to kenrel entry point in second core boot page

Assuming the OSes exception vectors start from the base of kernel address, and
the kernel physical starting address can be relocated to an non-zero address.
This patch enables the second core to have a valid IVPR for debugger before
kernel setting IVPR in CAMP mode. Otherwise, IVPR is 0x0 and it is not a valid
value for second core which runs kernel at different physical address other
than 0x0.

Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>

diff --git a/cpu/mpc85xx/release.S b/cpu/mpc85xx/release.S
index 7c3e8a1725aac6ebfb8611718bcd292e8331d43b..54c936c3ed472c5cfea5f602c0654629c001ee1c 100644 (file)
--- a/cpu/mpc85xx/release.S
+++ b/cpu/mpc85xx/release.S
@@ -157,6 +157,7 @@ __secondary_start_page:
        mfspr   r0,SPRN_PIR
        stw     r0,ENTRY_PIR(r10)
 
+       mtspr   IVPR,r12
 /*
  * Coming here, we know the cpu has one TLB mapping in TLB1[0]
  * which maps 0xfffff000-0xffffffff one-to-one.  We set up a