[PATCH 07/19] mips: define DPS root partition type UUIDs
Vincent Mailhol <[email protected]> Mon, 15 Jun 2026 18:09:03 +0200
| Newsgroups | org.kernel.vger.linux-efi,org.kernel.vger.linux-block,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel,org.kernel.vger.linux-mips |
|---|---|
| Message-ID | <20260615-discoverable-root_partitions-v1-7-39c78fac42e2@kernel.org> |
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 the MIPS endian and 32/64-bit variants described by the specification 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: Thomas Bogendoerfer <[email protected]> Cc: [email protected] Signed-off-by: Vincent Mailhol <[email protected]> --- arch/mips/Kconfig | 1 + arch/mips/include/asm/dps_root.h | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 4364f3dba688..15dd7d336cfa 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -10,6 +10,7 @@ config MIPS select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VIRTUAL if !64BIT select ARCH_HAS_DMA_OPS if MACH_JAZZ + select ARCH_HAS_DPS_ROOT_PARTITION_TYPE_UUID select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_KCOV select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA diff --git a/arch/mips/include/asm/dps_root.h b/arch/mips/include/asm/dps_root.h new file mode 100644 index 000000000000..b07cab7399ad --- /dev/null +++ b/arch/mips/include/asm/dps_root.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _ASM_MIPS_DPS_ROOT_H +#define _ASM_MIPS_DPS_ROOT_H + +#ifdef CONFIG_CPU_LITTLE_ENDIAN +#ifdef CONFIG_64BIT +#define DPS_ROOT_PARTITION_TYPE_UUID "700bda43-7a34-4507-b179-eeb93d7a7ca3" +#else +#define DPS_ROOT_PARTITION_TYPE_UUID "37c58c8a-d913-4156-a25f-48b1b64e07f0" +#endif +#else +#ifdef CONFIG_64BIT +#define DPS_ROOT_PARTITION_TYPE_UUID "d113af76-80ef-41b4-bdb6-0cff4d3d4a25" +#else +#define DPS_ROOT_PARTITION_TYPE_UUID "e9434544-6e2c-47cc-bae2-12d6deafb44c" +#endif +#endif + +#endif /* _ASM_MIPS_DPS_ROOT_H */ -- 2.53.0