powerpc/firmware: Add definitions for new drc-info firmware feature

Firmware Features: Define new bit flag representing the presence of
new device tree property "ibm,drc-info".  The flag is used to tell
the front end processor whether the Linux kernel supports the new
property, and by the front end processor to tell the Linux kernel
that the new property is present in the device tree.

Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h
index 832df61f30ef9bc9b963ab2de649345000099dfb..511acfd7ab0d3e20066dcd60e22bd3048ad34119 100644 (file)
--- a/arch/powerpc/include/asm/firmware.h
+++ b/arch/powerpc/include/asm/firmware.h
@@ -52,6 +52,7 @@
 #define FW_FEATURE_TYPE1_AFFINITY ASM_CONST(0x0000000100000000)
 #define FW_FEATURE_PRRN                ASM_CONST(0x0000000200000000)
 #define FW_FEATURE_DRMEM_V2    ASM_CONST(0x0000000400000000)
+#define FW_FEATURE_DRC_INFO    ASM_CONST(0x0000000400000000)
 
 #ifndef __ASSEMBLY__
 
@@ -68,7 +69,8 @@ enum {
                FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO |
                FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY |
                FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN |
-               FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2,
+               FW_FEATURE_HPT_RESIZE | FW_FEATURE_DRMEM_V2 |
+               FW_FEATURE_DRC_INFO,
        FW_FEATURE_PSERIES_ALWAYS = 0,
        FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL,
        FW_FEATURE_POWERNV_ALWAYS = 0,

diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index 9f27866e3126d82d9e1e051f3a0b82995cc0217c..2ab5d732fefac016568fe3a19ed6db332029741e 100644 (file)
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -160,6 +160,7 @@ extern int of_get_ibm_chip_id(struct device_node *np);
 #define OV5_HASH_GTSE          0x1940  /* Guest Translation Shoot Down Avail */
 /* Radix Table Extensions */
 #define OV5_RADIX_GTSE         0x1A40  /* Guest Translation Shoot Down Avail */
+#define OV5_DRC_INFO           0x1640  /* Redef Prop Structures: drc-info   */
 
 /* Option Vector 6: IBM PAPR hints */
 #define OV6_LINUX              0x02    /* Linux is our OS */

diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c
index aac3ea2911b2189eb8d87e45ddfdfc5d3b56887c..a3bbeb43689e6e95d76c881b83d704e68de06979 100644 (file)
--- a/arch/powerpc/platforms/pseries/firmware.c
+++ b/arch/powerpc/platforms/pseries/firmware.c
@@ -115,6 +115,7 @@ vec5_fw_features_table[] = {
        {FW_FEATURE_TYPE1_AFFINITY,     OV5_TYPE1_AFFINITY},
        {FW_FEATURE_PRRN,               OV5_PRRN},
        {FW_FEATURE_DRMEM_V2,           OV5_DRMEM_V2},
+       {FW_FEATURE_DRC_INFO,           OV5_DRC_INFO},
 };
 
 static void __init fw_vec5_feature_init(const char *vec5, unsigned long len)