On Tue, Sep 13, 2022 at 10:10:02PM -0400, Zhenyu Zhang wrote:
Add Neoverse-N1 as a supported cpu model.
I would like to review this patch, but I could not find the vendor ID in any official documentation. I know I am bad at searching, but the only thing I could find was that Ampere vendor uses "0xc0" as the value and part values for neoverse n1/n2/v1 which ought to be "0xd0c", "0xd49" and "0xd40" respectively. It could speed up the review if you included some pointer to a technical specification or something that would make it easier to check.
Signed-off-by: Zhang Zhenyu <zhenyzha@xxxxxxxxxx>
---
src/cpu_map/arm_neoverse-n1.xml | 6 ++++++
src/cpu_map/arm_vendors.xml | 1 +
src/cpu_map/index.xml | 3 +++
src/cpu_map/meson.build | 1 +
4 files changed, 11 insertions(+)
create mode 100644 src/cpu_map/arm_neoverse-n1.xml
diff --git a/src/cpu_map/arm_neoverse-n1.xml b/src/cpu_map/arm_neoverse-n1.xml
new file mode 100644
index 0000000000..14c7f7c300
--- /dev/null
+++ b/src/cpu_map/arm_neoverse-n1.xml
@@ -0,0 +1,6 @@
+<cpus>
+ <model name='Neoverse-N1'>
+ <vendor name='Ampere'/>
+ <pvr value='0xd0c'/>
+ </model>
+</cpus>
diff --git a/src/cpu_map/arm_vendors.xml b/src/cpu_map/arm_vendors.xml
index 92d10565f4..a9a945584b 100644
--- a/src/cpu_map/arm_vendors.xml
+++ b/src/cpu_map/arm_vendors.xml
@@ -13,4 +13,5 @@
<vendor name='Marvell' value='0x56'/>
<vendor name='Intel' value='0x69'/>
<vendor name='Phytium' value='0x70'/>
+ <vendor name='Ampere' value='0x71'/>
</cpus>
diff --git a/src/cpu_map/index.xml b/src/cpu_map/index.xml
index d533a28865..2419fa0a64 100644
--- a/src/cpu_map/index.xml
+++ b/src/cpu_map/index.xml
@@ -98,6 +98,9 @@
<include filename='arm_cortex-a57.xml'/>
<include filename='arm_cortex-a72.xml'/>
+ <!-- Ampere-based CPU models -->
+ <include filename='arm_neoverse-n1.xml'/>
+
<!-- Qualcomm-based CPU models -->
<include filename='arm_Falkor.xml'/>
diff --git a/src/cpu_map/meson.build b/src/cpu_map/meson.build
index 99264289e2..c8f2e36eea 100644
--- a/src/cpu_map/meson.build
+++ b/src/cpu_map/meson.build
@@ -7,6 +7,7 @@ cpumap_data = [
'arm_FT-2000plus.xml',
'arm_features.xml',
'arm_Kunpeng-920.xml',
+ 'arm_neoverse-n1.xml',
'arm_Tengyun-S2500.xml',
'arm_ThunderX299xx.xml',
'arm_vendors.xml',
--
2.31.1
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