Add firmware version details to the dump stack arch description, which
is printed in case of an oops.
Currently /hypervisor only exists on KVM, so if we don't find that
look for something that suggests we're on phyp and if so that's
probably a good guess. The actual content of the ibm,fw-net-version
seems to be a full path so is too long to add to the description.
eg: Hardware name: ... of:'IBM,FW860.42 (SV860_138)' hv:phyp
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
---
arch/powerpc/platforms/pseries/setup.c | 36 ++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/setup.c
b/arch/powerpc/platforms/pseries/setup.c
index 5e44c65a032c..f0ce8256ebb8 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -41,6 +41,7 @@
#include <linux/of_pci.h>
#include <linux/memblock.h>
#include <linux/swiotlb.h>
+#include <linux/seq_buf.h>
#include <asm/mmu.h>
#include <asm/processor.h>
@@ -1011,6 +1012,39 @@ static void __init pSeries_cmo_feature_init(void)
pr_debug(" <- fw_cmo_feature_init()\n");
}
+static void __init pseries_add_dump_stack_arch_desc(void)
+{
+ struct device_node *dn;
+ const char *prop;
+
+ dn = of_find_node_by_path("/openprom");
+ if (dn) {
+ prop = of_get_property(dn, "model", NULL);
+ if (prop)
+ seq_buf_printf(&ppc_hw_desc, "of:'%s' ", prop);
+
+ of_node_put(dn);
+ }
+
+ dn = of_find_node_by_path("/hypervisor");
+ if (dn) {
+ prop = of_get_property(dn, "compatible", NULL);
+ if (prop)
+ seq_buf_printf(&ppc_hw_desc, "hv:%s ", prop);
+
+ of_node_put(dn);
+ } else {
+ dn = of_find_node_by_path("/");
+ if (dn) {
+ prop = of_get_property(dn, "ibm,fw-net-version", NULL);
+ if (prop)
+ seq_buf_printf(&ppc_hw_desc, "hv:phyp ");
+
+ of_node_put(dn);
+ }
+ }
+}
+
/*
* Early initialization. Relocation is on but do not reference unbolted pages
*/
@@ -1018,6 +1052,8 @@ static void __init pseries_init(void)
{
pr_debug(" -> pseries_init()\n");
+ pseries_add_dump_stack_arch_desc();
+
#ifdef CONFIG_HVC_CONSOLE
if (firmware_has_feature(FW_FEATURE_LPAR))
hvc_vio_init_early();
--
2.37.3
