powerpc/85xx: Adding configuration for DCSRCR to enable 32M access
Configuring DCSRCR to define the DCSR space to be 1G instead
of the default 4M. DCSRCR only allows selection of either 4M
or 1G.
Most DCSR registers are within 4M but the Nexus trace buffer
is located at offset 16M within the DCSR.
Configuring the LAW to be 32M to allow access to the Nexus
trace buffer. No TLB modification is required since accessing
the Nexus trace buffer from within u-boot is not required.
Signed-off-by: Stephen George <stephen.george@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h
index 267a940..6aaade0 100644
--- a/arch/powerpc/include/asm/immap_85xx.h
+++ b/arch/powerpc/include/asm/immap_85xx.h
@@ -1759,7 +1759,8 @@
u32 cgencrl; /* Core general control */
u8 res31[184];
u32 sriopstecr; /* SRIO prescaler timer enable control */
- u8 res32[1788];
+ u32 dcsrcr; /* DCSR Control register */
+ u8 res32[1784];
u32 pmuxcr; /* Pin multiplexing control */
u8 res33[60];
u32 iovselsr; /* I/O voltage selection status */
@@ -1772,6 +1773,10 @@
u8 res37[380];
} ccsr_gur_t;
+#define FSL_CORENET_DCSR_SZ_MASK 0x00000003
+#define FSL_CORENET_DCSR_SZ_4M 0x0
+#define FSL_CORENET_DCSR_SZ_1G 0x3
+
/*
* On p4080 we have an LIODN for msg unit (rmu) but not maintenance
* everything after has RMan thus msg unit LIODN is used for maintenance