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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)
|
