[PATCH 08/19] parisc: define DPS root partition type UUID

[Vincent Mailhol]

DPS [1] assigns GPT partition type UUIDs to operating system partitions.
Root partitions use architecture-specific type UUIDs so the OS can
discover the intended root filesystem without relying on a root= cmdline
option.

Define DPS_ROOT_PARTITION_TYPE_UUID in asm/dps_root.h for parisc and
select ARCH_HAS_DPS_ROOT_PARTITION_TYPE_UUID.

[1] The Discoverable Partitions Specification (DPS)
Link: https://uapi-group.org/specifications/specs/discoverable_partitions_specification/

Cc: "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: linux-parisc@xxxxxxxxxxxxxxx
Signed-off-by: Vincent Mailhol <mailhol@xxxxxxxxxx>
---
 arch/parisc/Kconfig                | 1 +
 arch/parisc/include/asm/dps_root.h | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index d3afac2f0d9b..94f0a758176a 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -24,6 +24,7 @@ config PARISC
 	select ARCH_STACKWALK
 	select ARCH_HAS_CACHE_LINE_SIZE
 	select ARCH_HAS_DEBUG_VM_PGTABLE
+	select ARCH_HAS_DPS_ROOT_PARTITION_TYPE_UUID
 	select HAVE_RELIABLE_STACKTRACE
 	select RTC_CLASS
 	select RTC_DRV_GENERIC
diff --git a/arch/parisc/include/asm/dps_root.h b/arch/parisc/include/asm/dps_root.h
new file mode 100644
index 000000000000..bf475cd5b01c
--- /dev/null
+++ b/arch/parisc/include/asm/dps_root.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _ASM_PARISC_DPS_ROOT_H
+#define _ASM_PARISC_DPS_ROOT_H
+
+#define DPS_ROOT_PARTITION_TYPE_UUID "1aacdb3b-5444-4138-bd9e-e5c2239b2346"
+
+#endif /* _ASM_PARISC_DPS_ROOT_H */

-- 
2.53.0