From 3215d6157f5f94706aa5db6783838885a8a3c4f1 Mon Sep 17 00:00:00 2001
From: Feifei Wang <wangfeifei@hygon.cn>
Date: Mon, 19 Aug 2024 14:57:53 +0800
Subject: [PATCH 01/10] x86: Add new architecture type for Hygon processors

Add a new architecture type arch_kind_hygon to spilt Hygon branch
from AMD. This is to facilitate the Hygon processors to make settings
that are suitable for its own characteristics.

Signed-off-by: Feifei Wang <wangfeifei@hygon.cn>
Reviewed-by: Jing Li <lijing@hygon.cn>
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
---
 sysdeps/x86/cpu-features.c         | 19 ++++++++++++++++---
 sysdeps/x86/include/cpu-features.h |  1 +
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index f752ebd24d..c4dd85145e 100644
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -851,9 +851,8 @@ https://www.intel.com/content/www/us/en/support/articles/000059422/processors.ht
 	cpu_features->preferred[index_arch_Avoid_Short_Distance_REP_MOVSB]
 	  |= bit_arch_Avoid_Short_Distance_REP_MOVSB;
     }
-  /* This spells out "AuthenticAMD" or "HygonGenuine".  */
-  else if ((ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65)
-	   || (ebx == 0x6f677948 && ecx == 0x656e6975 && edx == 0x6e65476e))
+  /* This spells out "AuthenticAMD".  */
+  else if (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65)
     {
       unsigned int extended_model;
 
@@ -963,6 +962,20 @@ https://www.intel.com/content/www/us/en/support/articles/000059422/processors.ht
 	    }
 	}
     }
+  /* This spells out "HygonGenuine".  */
+  else if (ebx == 0x6f677948 && ecx == 0x656e6975 && edx == 0x6e65476e)
+    {
+      unsigned int extended_model;
+
+      kind = arch_kind_hygon;
+
+      get_common_indices (cpu_features, &family, &model, &extended_model,
+			  &stepping);
+
+      get_extended_indices (cpu_features);
+
+      update_active (cpu_features);
+    }
   else
     {
       kind = arch_kind_other;
diff --git a/sysdeps/x86/include/cpu-features.h b/sysdeps/x86/include/cpu-features.h
index eb30d342a6..594feeb2f4 100644
--- a/sysdeps/x86/include/cpu-features.h
+++ b/sysdeps/x86/include/cpu-features.h
@@ -856,6 +856,7 @@ enum cpu_features_kind
   arch_kind_intel,
   arch_kind_amd,
   arch_kind_zhaoxin,
+  arch_kind_hygon,
   arch_kind_other
 };
 
-- 
2.17.1

