linux-kernel - [PATCH 01/17] MIPS: loongson32: Get the system type from DT

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Message-Id: <20230729134318.1694467-2-keguang.zhang@gmail.com>
Date:   Sat, 29 Jul 2023 21:43:02 +0800
From:   Keguang Zhang <keguang.zhang@...il.com>
To:     linux-mips@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Keguang Zhang <keguang.zhang@...il.com>
Subject: [PATCH 01/17] MIPS: loongson32: Get the system type from DT

Get the system type from devicetree.
And update the copyright accordingly.

In addition, the system type belongs to proc info.
So rename setup.c to proc.c.

Signed-off-by: Keguang Zhang <keguang.zhang@...il.com>
---
 arch/mips/loongson32/Makefile        |  1 +
 arch/mips/loongson32/common/Makefile |  2 +-
 arch/mips/loongson32/common/setup.c  | 26 --------------------------
 arch/mips/loongson32/proc.c          | 20 ++++++++++++++++++++
 4 files changed, 22 insertions(+), 27 deletions(-)
 delete mode 100644 arch/mips/loongson32/common/setup.c
 create mode 100644 arch/mips/loongson32/proc.c

diff --git a/arch/mips/loongson32/Makefile b/arch/mips/loongson32/Makefile
index ba10954b4b21..c3881af369e9 100644
--- a/arch/mips/loongson32/Makefile
+++ b/arch/mips/loongson32/Makefile
@@ -3,6 +3,7 @@
 # Common code for all Loongson 1 based systems
 #
 
+obj-$(CONFIG_MACH_LOONGSON32) += proc.o
 obj-$(CONFIG_MACH_LOONGSON32) += common/
 
 #
diff --git a/arch/mips/loongson32/common/Makefile b/arch/mips/loongson32/common/Makefile
index f3950d308187..b44527b1a178 100644
--- a/arch/mips/loongson32/common/Makefile
+++ b/arch/mips/loongson32/common/Makefile
@@ -3,4 +3,4 @@
 # Makefile for common code of loongson1 based machines.
 #
 
-obj-y	+= time.o irq.o platform.o prom.o setup.o
+obj-y	+= time.o irq.o platform.o prom.o
diff --git a/arch/mips/loongson32/common/setup.c b/arch/mips/loongson32/common/setup.c
deleted file mode 100644
index 4733fe037176..000000000000
--- a/arch/mips/loongson32/common/setup.c
+++ /dev/null
@@ -1,26 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@...il.com>
- */
-
-#include <linux/io.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <asm/cpu-info.h>
-#include <asm/bootinfo.h>
-
-const char *get_system_type(void)
-{
-	unsigned int processor_id = (&current_cpu_data)->processor_id;
-
-	switch (processor_id & PRID_REV_MASK) {
-	case PRID_REV_LOONGSON1B:
-#if defined(CONFIG_LOONGSON1_LS1B)
-		return "LOONGSON LS1B";
-#elif defined(CONFIG_LOONGSON1_LS1C)
-		return "LOONGSON LS1C";
-#endif
-	default:
-		return "LOONGSON (unknown)";
-	}
-}
diff --git a/arch/mips/loongson32/proc.c b/arch/mips/loongson32/proc.c
new file mode 100644
index 000000000000..1ea54346b3d4
--- /dev/null
+++ b/arch/mips/loongson32/proc.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2011-2023 Keguang Zhang <keguang.zhang@...il.com>
+ */
+
+#include <linux/of.h>
+
+#include <asm/bootinfo.h>
+
+const char *get_system_type(void)
+{
+	const char *str;
+	int err;
+
+	err = of_property_read_string_index(of_root, "compatible", 1, &str);
+	if (!err)
+		return str;
+
+	return "Unknown";
+}
-- 
2.39.2