openwrt/target/linux/lantiq/patches-3.8/0200-MIPS-read-the-mips_machine-name-from-OF-and-output-i.patch

From 0184f7b64c68fe9606559e86bdd288de01c87a85 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Sun, 17 Mar 2013 10:30:48 +0100
Subject: [PATCH 200/208] MIPS: read the mips_machine name from OF and output
 it in /proc/cpuinfo

This allows the userland to be compatible to the devive probing of mips_machine.

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 arch/mips/include/asm/prom.h |    3 +++
 arch/mips/kernel/proc.c      |    6 +++++-
 arch/mips/kernel/prom.c      |   24 ++++++++++++++++++++++++
 3 files changed, 32 insertions(+), 1 deletion(-)

--- a/arch/mips/include/asm/prom.h
+++ b/arch/mips/include/asm/prom.h
@@ -44,8 +44,11 @@ extern void __dt_setup_arch(struct boot_
 	__dt_setup_arch(&__dtb_##sym##_begin);				\
 })
 
+extern char *of_mips_get_machine_name(void);
+
 #else /* CONFIG_OF */
 static inline void device_tree_init(void) { }
+static char *of_mips_get_machine_name(void) { return NULL; }
 #endif /* CONFIG_OF */
 
 #endif /* __ASM_PROM_H */
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -12,6 +12,7 @@
 #include <asm/cpu-features.h>
 #include <asm/mipsregs.h>
 #include <asm/processor.h>
+#include <asm/prom.h>
 #include <asm/mips_machine.h>
 
 unsigned int vced_count, vcei_count;
@@ -34,7 +35,10 @@ static int show_cpuinfo(struct seq_file
 	 */
 	if (n == 0) {
 		seq_printf(m, "system type\t\t: %s\n", get_system_type());
-		if (mips_get_machine_name())
+		if (of_mips_get_machine_name())
+			seq_printf(m, "machine\t\t\t: %s\n",
+				   of_mips_get_machine_name());
+		else if (mips_get_machine_name())
 			seq_printf(m, "machine\t\t\t: %s\n",
 				   mips_get_machine_name());
 	}
--- a/arch/mips/kernel/prom.c
+++ b/arch/mips/kernel/prom.c
@@ -23,6 +23,13 @@
 #include <asm/page.h>
 #include <asm/prom.h>
 
+static char of_mips_machine_name[64] = "Unknown";
+
+char *of_mips_get_machine_name(void)
+{
+	return of_mips_machine_name;
+}
+
 int __init early_init_dt_scan_memory_arch(unsigned long node,
 					  const char *uname, int depth,
 					  void *data)
@@ -50,6 +57,20 @@ void __init early_init_dt_setup_initrd_a
 }
 #endif
 
+int __init early_init_dt_scan_model(unsigned long node,
+	const char *uname, int depth,
+	void *data)
+{
+	if (!depth) {
+		char *model = of_get_flat_dt_prop(node, "model", NULL);
+		if (model) {
+			snprintf(of_mips_machine_name, sizeof(of_mips_machine_name), model);
+			pr_info("MIPS: machine is %s\n", of_mips_machine_name);
+		}
+	}
+	return 0;
+}
+
 void __init early_init_devtree(void *params)
 {
 	/* Setup flat device-tree pointer */
@@ -65,6 +86,9 @@ void __init early_init_devtree(void *par
 	/* Scan memory nodes */
 	of_scan_flat_dt(early_init_dt_scan_root, NULL);
 	of_scan_flat_dt(early_init_dt_scan_memory_arch, NULL);
+
+	/* try to load the mips machine name */
+	of_scan_flat_dt(early_init_dt_scan_model, NULL);
 }
 
 void __init __dt_setup_arch(struct boot_param_header *bph)