From 60c96dbf20da7014c014e19c47b57c30b338bfe0 Mon Sep 17 00:00:00 2001
From: Kyle Evans <kevans@FreeBSD.org>
Date: Wed, 28 Sep 2022 15:24:53 -0500
Subject: [PATCH] arm64: add a std.ec2 config

Mostly to document basic harware present on the platform; knowing that
Graviton exposes an ns8250 uart alone is quite helpful.

Reviewed by:	andrew, imp, manu
Seems accurate:	cperciva
Sponsored by:	NetApp, Inc.
Sponsored by:	Klara, Inc.
Differential Revision:	https://reviews.freebsd.org/D36776
---
 sys/arm64/conf/GENERIC |  1 +
 sys/arm64/conf/std.ec2 | 15 +++++++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 sys/arm64/conf/std.ec2

diff --git a/sys/arm64/conf/GENERIC b/sys/arm64/conf/GENERIC
index 60772893cdb..c53132b0c22 100644
--- a/sys/arm64/conf/GENERIC
+++ b/sys/arm64/conf/GENERIC
@@ -31,6 +31,7 @@ include		"std.amd"
 include		"std.arm"
 include		"std.broadcom"
 include		"std.cavium"
+include		"std.ec2"
 include		"std.hyperv"
 include		"std.hisilicon"
 include		"std.imx"
diff --git a/sys/arm64/conf/std.ec2 b/sys/arm64/conf/std.ec2
new file mode 100644
index 00000000000..da80c3b5f4b
--- /dev/null
+++ b/sys/arm64/conf/std.ec2
@@ -0,0 +1,15 @@
+#
+# EC2 support (Graviton, Graviton 2)
+#
+
+# Serial (COM) ports
+device		uart_ns8250
+
+# Ethernet NIC, typically loaded as a module instead
+#device		ena
+
+# Options typically present in AWS /boot/loader.conf that we don't want to
+# enable for GENERIC
+#envvar		hw.broken_txfifo=1
+
+device		acpi