powerpc/P4080: Check SVR for CPU22 workaround
Workaround for erratum CPU22 applies to P4080 rev 1 and rev 2 only.
Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/arch/powerpc/cpu/mpc85xx/release.S b/arch/powerpc/cpu/mpc85xx/release.S
index c81e19c..fe3b6d6 100644
--- a/arch/powerpc/cpu/mpc85xx/release.S
+++ b/arch/powerpc/cpu/mpc85xx/release.S
@@ -144,9 +144,17 @@
#endif
#if defined(CONFIG_SYS_P4080_ERRATUM_CPU22)
+ /* apply to P4080 rev 1 and rev 2 */
+ mfspr r3,SPRN_SVR
+ rlwinm r3,r3,0,0xf0
+ li r4,0x30
+ cmpw r3,r4
+ bge 2f
+
mfspr r8,L1CSR2
oris r8,r8,(L1CSR2_DCWS)@h
mtspr L1CSR2,r8
+2:
#endif
#ifdef CONFIG_BACKSIDE_L2_CACHE