As soon as we know the model of the machine we're on, add it to the dump
stack arch description, which is printed in case of an oops.
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
---
arch/powerpc/kernel/prom.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 308c5e15676b..a8ac55f7bd7b 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -34,6 +34,7 @@
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/libfdt.h>
+#include <linux/printk.h>
#include <asm/prom.h>
#include <asm/rtas.h>
@@ -642,6 +643,23 @@ static void __init early_reserve_mem(void)
#endif
}
+static int __init
+early_init_dt_scan_model(unsigned long node, const char *uname,
+ int depth, void *data)
+{
+ const char *prop;
+
+ if (depth != 0)
+ return 0;
+
+ prop = of_get_flat_dt_prop(node, "model", NULL);
+ if (prop)
+ dump_stack_add_arch_desc(prop);
+
+ /* break now */
+ return 1;
+}
+
void __init early_init_devtree(void *params)
{
phys_addr_t limit;
@@ -652,6 +670,8 @@ void __init early_init_devtree(void *params)
if (!early_init_dt_verify(params))
panic("BUG: Failed verifying flat device tree, bad version?");
+ of_scan_flat_dt(early_init_dt_scan_model, NULL);
+
#ifdef CONFIG_PPC_RTAS
/* Some machines might need RTAS info for debugging, grab it now. */
of_scan_flat_dt(early_init_dt_scan_rtas, NULL);
--
2.1.0
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