gpt: support LoongArch 64-bit

5 files changed, 56 insertions, 6 deletions

diff --git a/docs/DISCOVERABLE_PARTITIONS.md b/docs/DISCOVERABLE_PARTITIONS.md
index 368cac091f..4caa086dc5 100644
--- a/docs/DISCOVERABLE_PARTITIONS.md
+++ b/docs/DISCOVERABLE_PARTITIONS.md
@@ -46,6 +46,7 @@ Interface](https://systemd.io/BOOT_LOADER_INTERFACE).
 | `69dad710-2ce4-4e3c-b16c-21a1d49abed3` | _Root Partition (32-bit ARM)_ | ditto | ditto |
 | `b921b045-1df0-41c3-af44-4c6f280d3fae` | _Root Partition (64-bit ARM/AArch64)_ | ditto | ditto |
 | `993d8d3d-f80e-4225-855a-9daf8ed7ea97` | _Root Partition (Itanium/IA-64)_ | ditto | ditto |
+| `77055800-792c-4f94-b39a-98c91b762bb6` | _Root Partition (LoongArch 64-bit)_ | ditto | ditto |
 | `60d5a7fe-8e7d-435c-b714-3dd8162144e1` | _Root Partition (RISC-V 32-bit)_ | ditto | ditto |
 | `72ec70a6-cf74-40e6-bd49-4bda08e8f224` | _Root Partition (RISC-V 64-bit)_ | ditto | ditto |
 | `d13c5d3b-b5d1-422a-b29f-9454fdc89d76` | _Root Verity Partition (x86)_ | A dm-verity superblock followed by hash data | On systems with matching architecture, contains dm-verity integrity hash data for the matching root partition. If this feature is used the partition UUID of the root partition should be the first 128bit of the root hash of the dm-verity hash data, and the partition UUID of this dm-verity partition should be the final 128bit of it, so that the root partition and its verity partition can be discovered easily, simply by specifying the root hash. |
@@ -53,6 +54,7 @@ Interface](https://systemd.io/BOOT_LOADER_INTERFACE).
 | `7386cdf2-203c-47a9-a498-f2ecce45a2d6` | _Root Verity Partition (32-bit ARM)_ | ditto | ditto |
 | `df3300ce-d69f-4c92-978c-9bfb0f38d820` | _Root Verity Partition (64-bit ARM/AArch64)_ | ditto | ditto |
 | `86ed10d5-b607-45bb-8957-d350f23d0571` | _Root Verity Partition (Itanium/IA-64)_  | ditto | ditto |
+| `f3393b22-e9af-4613-a948-9d3bfbd0c535` | _Root Verity Partition (LoongArch 64-bit)_  | ditto | ditto |
 | `ae0253be-1167-4007-ac68-43926c14c5de` | _Root Verity Partition (RISC-V 32-bit)_  | ditto | ditto |
 | `b6ed5582-440b-4209-b8da-5ff7c419ea3d` | _Root Verity Partition (RISC-V 64-bit)_  | ditto | ditto |
 | `75250d76-8cc6-458e-bd66-bd47cc81a812` | _`/usr/` Partition (x86)_ | Any native, optionally in LUKS | Similar semantics to root partition, but just the `/usr/` partition. |
@@ -60,6 +62,7 @@ Interface](https://systemd.io/BOOT_LOADER_INTERFACE).
 | `7d0359a3-02b3-4f0a-865c-654403e70625` | _`/usr/` Partition (32-bit ARM)_ | ditto | ditto |
 | `b0e01050-ee5f-4390-949a-9101b17104e9` | _`/usr/` Partition (64-bit ARM/AArch64)_ | ditto | ditto |
 | `4301d2a6-4e3b-4b2a-bb94-9e0b2c4225ea` | _`/usr/` Partition (Itanium/IA-64)_ | ditto | ditto |
+| `e611c702-575c-4cbe-9a46-434fa0bf7e3f` | _`/usr/` Partition (LoongArch 64-bit)_ | ditto | ditto |
 | `b933fb22-5c3f-4f91-af90-e2bb0fa50702` | _`/usr/` Partition (RISC-V 32-bit)_ | ditto | ditto |
 | `beaec34b-8442-439b-a40b-984381ed097d` | _`/usr/` Partition (RISC-V 64-bit)_ | ditto | ditto |
 | `8f461b0d-14ee-4e81-9aa9-049b6fb97abd` | _`/usr/` Verity Partition (x86)_ | A dm-verity superblock followed by hash data | Similar semantics to root Verity partition, but just for the `/usr/` partition. |
@@ -67,6 +70,7 @@ Interface](https://systemd.io/BOOT_LOADER_INTERFACE).
 | `c215d751-7bcd-4649-be90-6627490a4c05` | _`/usr/` Verity Partition (32-bit ARM)_ | ditto | ditto |
 | `6e11a4e7-fbca-4ded-b9e9-e1a512bb664e` | _`/usr/` Verity Partition (64-bit ARM/AArch64)_ | ditto | ditto |
 | `6a491e03-3be7-4545-8e38-83320e0ea880` | _`/usr/` Verity Partition (Itanium/IA-64)_ | ditto | ditto |
+| `f46b2c26-59ae-48f0-9106-c50ed47f673d` | _`/usr/` Verity Partition (LoongArch 64-bit)_ | ditto | ditto |
 | `cb1ee4e3-8cd0-4136-a0a4-aa61a32e8730` | _`/usr/` Verity Partition (RISC-V 32-bit)_ | ditto | ditto |
 | `8f1056be-9b05-47c4-81d6-be53128e5b54` | _`/usr/` Verity Partition (RISC-V 64-bit)_ | ditto | ditto |
 | `933ac7e1-2eb4-4f13-b844-0e14e2aef915` | _Home Partition_ | Any native, optionally in LUKS | The first partition with this type UUID on the disk containing the root partition is automatically mounted to `/home/`.  If the partition is encrypted with LUKS, the device mapper file will be named `/dev/mapper/home`. |
@@ -221,13 +225,13 @@ We are not. `/etc/fstab` always overrides automatic discovery and is indeed
 mentioned in the specifications.  We are simply trying to make the boot and
 installation processes of Linux a bit more robust and self-descriptive.
 
-### Why did you only define the root partition for x86, x86-64, ARM, ARM64, ia64, riscv32, riscv64?
+### Why did you only define the root partition for these listed architectures?
 
 The automatic discovery of the root partition is defined to operate on the disk
 containing the current EFI System Partition (ESP). Since EFI only exists on
-x86, x86-64, ia64, ARM and RISC-V so far, we only defined root partition UUIDs for
-these architectures.  Should EFI become more common on other architectures, we
-can define additional UUIDs for them.
+x86, x86-64, ia64, ARM, LoongArch and RISC-V so far, we only defined root
+partition UUIDs for these architectures.  Should EFI become more common on
+other architectures, we can define additional UUIDs for them.
 
 ### Why define distinct root partition UUIDs for the various architectures?
 
diff --git a/man/repart.d.xml b/man/repart.d.xml
index da1dea986f..0305e255c7 100644
--- a/man/repart.d.xml
+++ b/man/repart.d.xml
@@ -201,6 +201,16 @@
               </row>
 
               <row>
+                <entry><constant>root-loongarch64</constant></entry>
+                <entry>Root file system partition for the LoongArch 64-bit architecture</entry>
+              </row>
+
+              <row>
+                <entry><constant>root-loongarch64-verity</constant></entry>
+                <entry>Verity data for the LoongArch 64-bit root file system partition</entry>
+              </row>
+
+              <row>
                 <entry><constant>root-riscv32</constant></entry>
                 <entry>Root file system partition for the RISC-V 32-bit architecture</entry>
               </row>
@@ -291,6 +301,16 @@
               </row>
 
               <row>
+                <entry><constant>usr-loongarch64</constant></entry>
+                <entry><filename>/usr/</filename> file system partition for the LoongArch 64-bit architecture</entry>
+              </row>
+
+              <row>
+                <entry><constant>usr-loongarch64-verity</constant></entry>
+                <entry>Verity data for the LoongArch 64-bit <filename>/usr/</filename> file system partition</entry>
+              </row>
+
+              <row>
                 <entry><constant>usr-riscv32</constant></entry>
                 <entry><filename>/usr/</filename> file system partition for the RISC-V 32-bit architecture</entry>
               </row>
diff --git a/man/systemd-gpt-auto-generator.xml b/man/systemd-gpt-auto-generator.xml
index 4a21540c70..798faa59c8 100644
--- a/man/systemd-gpt-auto-generator.xml
+++ b/man/systemd-gpt-auto-generator.xml
@@ -110,6 +110,12 @@
             <entry>On Itanium systems, the first Itanium root partition on the disk the EFI ESP is located on is mounted to the root directory <filename>/</filename>.</entry>
           </row>
           <row>
+            <entry>77055800-792c-4f94-b39a-98c91b762bb6</entry>
+            <entry><filename>Root Partition (LoongArch 64)</filename></entry>
+            <entry><filename>/</filename></entry>
+            <entry>On LoongArch 64-bit systems, the first LoongArch 64-bit root partition on the disk the EFI ESP is located on is mounted to the root directory <filename>/</filename>.</entry>
+          </row>
+          <row>
             <entry>60d5a7fe-8e7d-435c-b714-3dd8162144e1</entry>
             <entry><filename>Root Partition (RISCV-V 32)</filename></entry>
             <entry><filename>/</filename></entry>
diff --git a/src/shared/gpt.c b/src/shared/gpt.c
index 882d11ca6c..e694969b79 100644
--- a/src/shared/gpt.c
+++ b/src/shared/gpt.c
@@ -15,6 +15,8 @@ const GptPartitionType gpt_partition_type_table[] = {
         { GPT_ROOT_ARM_64_VERITY,    "root-arm64-verity"     },
         { GPT_ROOT_IA64,             "root-ia64"             },
         { GPT_ROOT_IA64_VERITY,      "root-ia64-verity"      },
+        { GPT_ROOT_LOONGARCH64,      "root-loongarch64"      },
+        { GPT_ROOT_LOONGARCH64_VERITY, "root-loongarch64-verity" },
         { GPT_ROOT_RISCV32,          "root-riscv32"          },
         { GPT_ROOT_RISCV32_VERITY,   "root-riscv32-verity"   },
         { GPT_ROOT_RISCV64,          "root-riscv64"          },
@@ -37,6 +39,8 @@ const GptPartitionType gpt_partition_type_table[] = {
         { GPT_USR_ARM_64_VERITY,     "usr-arm64-verity"      },
         { GPT_USR_IA64,              "usr-ia64"              },
         { GPT_USR_IA64_VERITY,       "usr-ia64-verity"       },
+        { GPT_USR_LOONGARCH64,       "usr-loongarch64"       },
+        { GPT_USR_LOONGARCH64_VERITY, "usr-loongarch64-verity" },
         { GPT_USR_RISCV32,           "usr-riscv32"           },
         { GPT_USR_RISCV32_VERITY,    "usr-riscv32-verity"    },
         { GPT_USR_RISCV64,           "usr-riscv64"           },
@@ -114,6 +118,7 @@ bool gpt_partition_type_is_root(sd_id128_t id) {
                                GPT_ROOT_ARM,
                                GPT_ROOT_ARM_64,
                                GPT_ROOT_IA64,
+                               GPT_ROOT_LOONGARCH64,
                                GPT_ROOT_RISCV32,
                                GPT_ROOT_RISCV64);
 }
@@ -125,6 +130,7 @@ bool gpt_partition_type_is_root_verity(sd_id128_t id) {
                                GPT_ROOT_ARM_VERITY,
                                GPT_ROOT_ARM_64_VERITY,
                                GPT_ROOT_IA64_VERITY,
+                               GPT_ROOT_LOONGARCH64_VERITY,
                                GPT_ROOT_RISCV32_VERITY,
                                GPT_ROOT_RISCV64_VERITY);
 }
@@ -136,6 +142,7 @@ bool gpt_partition_type_is_usr(sd_id128_t id) {
                                GPT_USR_ARM,
                                GPT_USR_ARM_64,
                                GPT_USR_IA64,
+                               GPT_USR_LOONGARCH64,
                                GPT_USR_RISCV32,
                                GPT_USR_RISCV64);
 }
@@ -147,6 +154,7 @@ bool gpt_partition_type_is_usr_verity(sd_id128_t id) {
                                GPT_USR_ARM_VERITY,
                                GPT_USR_ARM_64_VERITY,
                                GPT_USR_IA64_VERITY,
+                               GPT_USR_LOONGARCH64_VERITY,
                                GPT_USR_RISCV32_VERITY,
                                GPT_USR_RISCV64_VERITY);
 }
diff --git a/src/shared/gpt.h b/src/shared/gpt.h
index dc530ef1b0..0337cc3893 100644
--- a/src/shared/gpt.h
+++ b/src/shared/gpt.h
@@ -7,14 +7,16 @@
 
 #include "id128-util.h"
 
-/* We only support root disk discovery for x86, x86-64, Itanium and ARM for now, since EFI for anything else
- * doesn't really exist, and we only care for root partitions on the same disk as the EFI ESP. */
+/* We only support root disk discovery for x86, x86-64, Itanium, ARM and LoongArch for now,
+ * since EFI for anything else doesn't really exist, and we only care for root partitions
+ * on the same disk as the EFI ESP. */
 
 #define GPT_ROOT_X86      SD_ID128_MAKE(44,47,95,40,f2,97,41,b2,9a,f7,d1,31,d5,f0,45,8a)
 #define GPT_ROOT_X86_64   SD_ID128_MAKE(4f,68,bc,e3,e8,cd,4d,b1,96,e7,fb,ca,f9,84,b7,09)
 #define GPT_ROOT_ARM      SD_ID128_MAKE(69,da,d7,10,2c,e4,4e,3c,b1,6c,21,a1,d4,9a,be,d3)
 #define GPT_ROOT_ARM_64   SD_ID128_MAKE(b9,21,b0,45,1d,f0,41,c3,af,44,4c,6f,28,0d,3f,ae)
 #define GPT_ROOT_IA64     SD_ID128_MAKE(99,3d,8d,3d,f8,0e,42,25,85,5a,9d,af,8e,d7,ea,97)
+#define GPT_ROOT_LOONGARCH64 SD_ID128_MAKE(77,05,58,00,79,2c,4f,94,b3,9a,99,c9,1b,76,2b,b6)
 #define GPT_ROOT_RISCV32  SD_ID128_MAKE(60,d5,a7,fe,8e,7d,43,5c,b7,14,3d,d8,16,21,44,e1)
 #define GPT_ROOT_RISCV64  SD_ID128_MAKE(72,ec,70,a6,cf,74,40,e6,bd,49,4b,da,08,e8,f2,24)
 #define GPT_USR_X86       SD_ID128_MAKE(75,25,0d,76,8c,c6,45,8e,bd,66,bd,47,cc,81,a8,12)
@@ -22,6 +24,7 @@
 #define GPT_USR_ARM       SD_ID128_MAKE(7d,03,59,a3,02,b3,4f,0a,86,5c,65,44,03,e7,06,25)
 #define GPT_USR_ARM_64    SD_ID128_MAKE(b0,e0,10,50,ee,5f,43,90,94,9a,91,01,b1,71,04,e9)
 #define GPT_USR_IA64      SD_ID128_MAKE(43,01,d2,a6,4e,3b,4b,2a,bb,94,9e,0b,2c,42,25,ea)
+#define GPT_USR_LOONGARCH64 SD_ID128_MAKE(e6,11,c7,02,57,5c,4c,be,9a,46,43,4f,a0,bf,7e,3f)
 #define GPT_USR_RISCV32   SD_ID128_MAKE(b9,33,fb,22,5c,3f,4f,91,af,90,e2,bb,0f,a5,07,02)
 #define GPT_USR_RISCV64   SD_ID128_MAKE(be,ae,c3,4b,84,42,43,9b,a4,0b,98,43,81,ed,09,7d)
 #define GPT_ESP           SD_ID128_MAKE(c1,2a,73,28,f8,1f,11,d2,ba,4b,00,a0,c9,3e,c9,3b)
@@ -41,6 +44,7 @@
 #define GPT_ROOT_ARM_VERITY    SD_ID128_MAKE(73,86,cd,f2,20,3c,47,a9,a4,98,f2,ec,ce,45,a2,d6)
 #define GPT_ROOT_ARM_64_VERITY SD_ID128_MAKE(df,33,00,ce,d6,9f,4c,92,97,8c,9b,fb,0f,38,d8,20)
 #define GPT_ROOT_IA64_VERITY   SD_ID128_MAKE(86,ed,10,d5,b6,07,45,bb,89,57,d3,50,f2,3d,05,71)
+#define GPT_ROOT_LOONGARCH64_VERITY SD_ID128_MAKE(f3,39,3b,22,e9,af,46,13,a9,48,9d,3b,fb,d0,c5,35)
 #define GPT_ROOT_RISCV32_VERITY SD_ID128_MAKE(ae,02,53,be,11,67,40,07,ac,68,43,92,6c,14,c5,de)
 #define GPT_ROOT_RISCV64_VERITY SD_ID128_MAKE(b6,ed,55,82,44,0b,42,09,b8,da,5f,f7,c4,19,ea,3d)
 #define GPT_USR_X86_VERITY     SD_ID128_MAKE(8f,46,1b,0d,14,ee,4e,81,9a,a9,04,9b,6f,b9,7a,bd)
@@ -48,6 +52,7 @@
 #define GPT_USR_ARM_VERITY     SD_ID128_MAKE(c2,15,d7,51,7b,cd,46,49,be,90,66,27,49,0a,4c,05)
 #define GPT_USR_ARM_64_VERITY  SD_ID128_MAKE(6e,11,a4,e7,fb,ca,4d,ed,b9,e9,e1,a5,12,bb,66,4e)
 #define GPT_USR_IA64_VERITY    SD_ID128_MAKE(6a,49,1e,03,3b,e7,45,45,8e,38,83,32,0e,0e,a8,80)
+#define GPT_USR_LOONGARCH64_VERITY SD_ID128_MAKE(f4,6b,2c,26,59,ae,48,f0,91,06,c5,0e,d4,7f,67,3d)
 #define GPT_USR_RISCV32_VERITY SD_ID128_MAKE(cb,1e,e4,e3,8c,d0,41,36,a0,a4,aa,61,a3,2e,87,30)
 #define GPT_USR_RISCV64_VERITY SD_ID128_MAKE(8f,10,56,be,9b,05,47,c4,81,d6,be,53,12,8e,5b,54)
 
@@ -90,6 +95,13 @@
 #  define GPT_USR_NATIVE_VERITY GPT_USR_ARM_VERITY
 #endif
 
+#if defined(__loongarch64)
+#  define GPT_ROOT_NATIVE GPT_ROOT_LOONGARCH64
+#  define GPT_ROOT_NATIVE_VERITY GPT_ROOT_LOONGARCH64_VERITY
+#  define GPT_USR_NATIVE GPT_USR_LOONGARCH64
+#  define GPT_USR_NATIVE_VERITY GPT_USR_LOONGARCH64_VERITY
+#endif
+
 #if defined(__riscv)
 #if (__riscv_xlen == 32)
 #  define GPT_ROOT_NATIVE GPT_ROOT_RISCV32