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

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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>
This commit is contained in:
Michael Bringmann 2017-12-01 17:19:40 -06:00 committed by Michael Ellerman
parent 723b113319
commit 3f38000eda
3 changed files with 5 additions and 1 deletions
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4
arch/powerpc/include/asm/firmware.h
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@ -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,

1
arch/powerpc/include/asm/prom.h
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@ -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 */

1
arch/powerpc/platforms/pseries/firmware.c
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@ -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)