CPUCFG0 is LoongArch CPU Product ID, it is a combination of Vendor ID,
Series ID and Product ID, here is the layout:
 +-------------+----------------+------------+----------------+
 | Reserved    | Vendor  ID     | Series ID  |  Product ID    |
 +-------------+----------------+------------+----------------+
  31         24 23            16 15        12 11              0

Here adds detailed information with CPUCFG0, it is convenient to add
such information with host or LA664 CPU type in future.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
---
 target/loongarch/cpu.c | 12 ++++++++++--
 target/loongarch/cpu.h | 10 +++++++++-
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index d74c3c3766..68ae3aff97 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -278,8 +278,12 @@ static void loongarch_la464_initfn(Object *obj)
     }
 
     cpu->dtb_compatible = "loongarch,Loongson-3A5000";
-    env->cpucfg[0] = 0x14c010;  /* PRID */
+    data = FIELD_DP32(data, CPUCFG0, PRID, 0x10);
+    data = FIELD_DP32(data, CPUCFG0, SERID, PRID_SERIES_LA464);
+    data = FIELD_DP32(data, CPUCFG0, VENID, PRID_VENDOR_LOONGSON);
+    env->cpucfg[0] = data;
 
+    data = 0;
     data = FIELD_DP32(data, CPUCFG1, ARCH, 2);
     data = FIELD_DP32(data, CPUCFG1, PGMMU, 1);
     data = FIELD_DP32(data, CPUCFG1, IOCSR, 1);
@@ -385,8 +389,12 @@ static void loongarch_la132_initfn(Object *obj)
     }
 
     cpu->dtb_compatible = "loongarch,Loongson-1C103";
-    env->cpucfg[0] = 0x148042;  /* PRID */
+    data = FIELD_DP32(data, CPUCFG0, PRID, 0x42);
+    data = FIELD_DP32(data, CPUCFG0, SERID, PRID_SERIES_LA132);
+    data = FIELD_DP32(data, CPUCFG0, VENID, PRID_VENDOR_LOONGSON);
+    env->cpucfg[0] = data;
 
+    data = 0;
     data = FIELD_DP32(data, CPUCFG1, ARCH, 1); /* LA32 */
     data = FIELD_DP32(data, CPUCFG1, PGMMU, 1);
     data = FIELD_DP32(data, CPUCFG1, IOCSR, 1);
diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
index 1a14469b3b..c00ad67457 100644
--- a/target/loongarch/cpu.h
+++ b/target/loongarch/cpu.h
@@ -97,7 +97,15 @@ FIELD(FCSR0, CAUSE, 24, 5)
 #define  EXCCODE_DBP                 EXCODE(26, 0) /* Reserved subcode used for debug */
 
 /* cpucfg[0] bits */
-FIELD(CPUCFG0, PRID, 0, 32)
+FIELD(CPUCFG0, PRID, 0, 12)
+FIELD(CPUCFG0, SERID, 12, 4)
+FIELD(CPUCFG0, VENID, 16, 8)
+#define PRID_SERIES_LA132            0x8  /* Loongson 32bit */
+#define PRID_SERIES_LA264            0xa  /* Loongson 64bit, 2-issue */
+#define PRID_SERIES_LA364            0xb  /* Loongson 64bit, 3-issue */
+#define PRID_SERIES_LA464            0xc  /* Loongson 64bit, 4-issue */
+#define PRID_SERIES_LA664            0xd  /* Loongson 64bit, 6-issue */
+#define PRID_VENDOR_LOONGSON         0x14
 
 /* cpucfg[1] bits */
 FIELD(CPUCFG1, ARCH, 0, 2)

base-commit: a8e63c013016f9ff981689189c5b063551d04559
-- 
2.39.3