[V5,8/8] powerpc: Enable support for new DRC devtree properties
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Message ID 6f98d032-7699-770c-cabb-e2e645c8647c@linux.vnet.ibm.com
State Superseded
Headers show

Commit Message

Michael Bringmann Sept. 14, 2016, 8:05 p.m. UTC
prom_init.c: Enable support for new DRC device tree properties
"ibm,drc-info" and "ibm,dynamic-memory-v2" in initial handshake
between the Linux kernel and the front end processor.

[V2: Revise constant names.]
[V3: No change.]
[V4: Update comments]
[V5: Resynchronize/resubmit]

Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>
---

Patch
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diff -Naur linux-rhel/arch/powerpc/kernel/prom_init.c linux-rhel-patch/arch/powerpc/kernel/prom_init.c
--- linux-rhel/arch/powerpc/kernel/prom_init.c	2016-03-03 07:36:25.000000000 -0600
+++ linux-rhel-patch/arch/powerpc/kernel/prom_init.c	2016-06-20 15:59:58.016373676 -0500
@@ -695,7 +695,7 @@  unsigned char ibm_architecture_vec[] = {
 	OV4_MIN_ENT_CAP,		/* minimum VP entitled capacity */
 
 	/* option vector 5: PAPR/OF options */
-	VECTOR_LENGTH(18),		/* length */
+	VECTOR_LENGTH(22),		/* length */
 	0,				/* don't ignore, don't halt */
 	OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) |
 	OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) |
@@ -728,6 +728,10 @@  unsigned char ibm_architecture_vec[] = {
 	OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) |
 	OV5_FEAT(OV5_PFO_HW_842),
 	OV5_FEAT(OV5_SUB_PROCESSORS),
+	0,
+	0,
+	0,
+	OV5_FEAT(OV5_DYN_MEM_V2) | OV5_FEAT(OV5_DRC_INFO),
 
 	/* option vector 6: IBM PAPR hints */
 	VECTOR_LENGTH(3),		/* length */