From: Michael Ellerman <mpe@ellerman.id.au>
To: <linuxppc-dev@lists.ozlabs.org>
Cc: nathanl@linux.ibm.com
Subject: [PATCH v2 2/6] powerpc: Add PVR & CPU name to hardware description
Date: Thu, 29 Sep 2022 23:59:15 +1000 [thread overview]
Message-ID: <20220929135919.1983269-2-mpe@ellerman.id.au> (raw)
In-Reply-To: <20220929135919.1983269-1-mpe@ellerman.id.au>
Add the PVR and CPU name to the hardware description, which is printed
at boot and in case of an oops.
eg: Hardware name: ... cpu:'POWER8E (raw)' pvr:0x4b0201
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/kernel/prom.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 2e7a04dab2f7..b42e2dbeb021 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -30,6 +30,7 @@
#include <linux/libfdt.h>
#include <linux/cpu.h>
#include <linux/pgtable.h>
+#include <linux/seq_buf.h>
#include <asm/rtas.h>
#include <asm/page.h>
@@ -819,6 +820,10 @@ void __init early_init_devtree(void *params)
dt_cpu_ftrs_scan();
+ // We can now add the CPU name & PVR to the hardware description
+ seq_buf_printf(&ppc_hw_desc, "cpu:'%s' pvr:0x%04lx ", cur_cpu_spec->cpu_name,
+ mfspr(SPRN_PVR));
+
/* Retrieve CPU related informations from the flat tree
* (altivec support, boot CPU ID, ...)
*/
--
2.37.3
next prev parent reply other threads:[~2022-09-29 14:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-29 13:59 [PATCH v2 1/6] powerpc: Add hardware description string Michael Ellerman
2022-09-29 13:59 ` Michael Ellerman [this message]
2022-09-29 13:59 ` [PATCH v2 3/6] powerpc/64: Add logical PVR to the hardware description Michael Ellerman
2022-09-29 13:59 ` [PATCH v2 4/6] powerpc: Add device-tree model " Michael Ellerman
2022-09-29 13:59 ` [PATCH v2 5/6] powerpc/powernv: Add opal details " Michael Ellerman
2022-09-29 13:59 ` [PATCH v2 6/6] powerpc/pseries: Add firmware " Michael Ellerman
2022-09-29 14:12 ` [PATCH v2 1/6] powerpc: Add hardware description string Michael Ellerman
2022-09-29 14:22 Michael Ellerman
2022-09-29 14:22 ` [PATCH v2 2/6] powerpc: Add PVR & CPU name to hardware description Michael Ellerman
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