[V8,1/8] powerpc/firmware: Add definitions for new firmware features.
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Message ID 147757825707.2995.5140446748238845005.stgit@powerkvm6.aus.stglabs.ibm.com
State Superseded
Headers show

Commit Message

Michael Bringmann Oct. 27, 2016, 2:24 p.m. UTC
Firmware Features: Define new bit flags representing the presence of
new device tree properties "ibm,drc-info", and "ibm,dynamic-memory-v2".
These flags are used to tell the front end processor when the Linux
kernel supports the new properties, and by the front end processor to
tell the Linux kernel that the new properties are present in the devie
tree.

[V2: Revise constant names for improved clarity.]
[V3: Fix comments]
[V4: Fix some spacing]
[V5: Resynchronize/resubmit]
[V6: No change]
[V7: Correct mail threading]
[v8: Insert more useful variable names]

Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/firmware.h       |    5 ++++-
 arch/powerpc/include/asm/prom.h           |    2 ++
 arch/powerpc/platforms/pseries/firmware.c |    2 ++
 3 files changed, 8 insertions(+), 1 deletion(-)

Patch
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diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h
index 1e0b5a5..6b5cf38 100644
--- a/arch/powerpc/include/asm/firmware.h
+++ b/arch/powerpc/include/asm/firmware.h
@@ -51,6 +51,8 @@ 
 #define FW_FEATURE_BEST_ENERGY	ASM_CONST(0x0000000080000000)
 #define FW_FEATURE_TYPE1_AFFINITY ASM_CONST(0x0000000100000000)
 #define FW_FEATURE_PRRN		ASM_CONST(0x0000000200000000)
+#define FW_FEATURE_DYN_MEM_V2	ASM_CONST(0x0000000400000000)
+#define FW_FEATURE_DRC_INFO	ASM_CONST(0x0000000800000000)
 
 #ifndef __ASSEMBLY__
 
@@ -66,7 +68,8 @@  enum {
 		FW_FEATURE_MULTITCE | FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
 		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_TYPE1_AFFINITY | FW_FEATURE_PRRN |
+		FW_FEATURE_DYN_MEM_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 7f436ba..bc7c4b5 100644
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -155,6 +155,8 @@  struct of_drconf_cell {
 #define OV5_PFO_HW_842		0x0E40	/* PFO Compression Accelerator */
 #define OV5_PFO_HW_ENCR		0x0E20	/* PFO Encryption Accelerator */
 #define OV5_SUB_PROCESSORS	0x0F01	/* 1,2,or 4 Sub-Processors supported */
+#define OV5_DYN_MEM_V2		0x1680	/* Redef Prop Structures: dyn-mem-v2 */
+#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 ea7f09b..d2d23f5 100644
--- a/arch/powerpc/platforms/pseries/firmware.c
+++ b/arch/powerpc/platforms/pseries/firmware.c
@@ -113,6 +113,8 @@  static __initdata struct vec5_fw_feature
 vec5_fw_features_table[] = {
 	{FW_FEATURE_TYPE1_AFFINITY,	OV5_TYPE1_AFFINITY},
 	{FW_FEATURE_PRRN,		OV5_PRRN},
+	{FW_FEATURE_DYN_MEM_V2,		OV5_DYN_MEM_V2},
+	{FW_FEATURE_DRC_INFO,		OV5_DRC_INFO},
 };
 
 static void __init fw_vec5_feature_init(const char *vec5, unsigned long len)