From bf213087057f61b37d9586414e47a8cf2cfc23a1 Mon Sep 17 00:00:00 2001
From: Felix Held <felix.held@amd.corp-partner.google.com>
Date: Mon, 18 May 2020 20:27:04 +0200
Subject: [PATCH] soc/amd/picasso/soc_util: add socket type detection and
 printing

Change-Id: I643a4c5f8a42a5fb0603a1a049545b57d16493a6
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41517
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/soc/amd/picasso/include/soc/soc_util.h |  8 ++++++
 src/soc/amd/picasso/soc_util.c             | 33 ++++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/src/soc/amd/picasso/include/soc/soc_util.h b/src/soc/amd/picasso/include/soc/soc_util.h
index 9d769b9417..8e2c598630 100644
--- a/src/soc/amd/picasso/include/soc/soc_util.h
+++ b/src/soc/amd/picasso/include/soc/soc_util.h
@@ -1,5 +1,13 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+enum socket_type {
+	SOCKET_FP5 = 0,
+	SOCKET_AM4 = 2,
+	SOCKET_FT5 = 3,
+};
+
+void print_socket_type(void);
+
 int soc_is_pollock(void);
 int soc_is_dali(void);
 int soc_is_picasso(void);
diff --git a/src/soc/amd/picasso/soc_util.c b/src/soc/amd/picasso/soc_util.c
index 94ebb6b066..a70d833d80 100644
--- a/src/soc/amd/picasso/soc_util.c
+++ b/src/soc/amd/picasso/soc_util.c
@@ -1,8 +1,41 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <arch/cpu.h>
+#include <console/console.h>
 #include <soc/cpu.h>
 #include <soc/soc_util.h>
+#include <types.h>
+
+#define SOCKET_TYPE_SHIFT	28
+#define SOCKET_TYPSE_MASK	(0xf << SOCKET_TYPE_SHIFT)
+
+static enum socket_type get_socket_type(void)
+{
+	uint32_t ebx = cpuid_ebx(0x80000001);
+	ebx = (ebx & SOCKET_TYPSE_MASK) >> SOCKET_TYPE_SHIFT;
+	return (enum socket_type)ebx;
+}
+
+void print_socket_type(void)
+{
+	enum socket_type socket = get_socket_type();
+
+	printk(BIOS_INFO, "Socket type: ");
+
+	switch (socket) {
+	case SOCKET_FP5:
+		printk(BIOS_INFO, "FP5\n");
+		break;
+	case SOCKET_AM4:
+		printk(BIOS_INFO, "AM4\n");
+		break;
+	case SOCKET_FT5:
+		printk(BIOS_INFO, "FT5\n");
+		break;
+	default:
+		printk(BIOS_INFO, "unknown\n");
+	}
+}
 
 int soc_is_pollock(void)
 {