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openwrt/target/linux/bcm27xx/patches-6.6/950-0172-arch-arm64-Add-Revision-Serial-Model-to-cpuinfo.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

57 lines
1.6 KiB
Diff

From da50d1f1e2603da65c981476f0b3d16f11ff93cd Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 3 Sep 2019 18:17:25 +0100
Subject: [PATCH 0172/1085] arch/arm64: Add Revision, Serial, Model to cpuinfo
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm64/kernel/cpuinfo.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -17,6 +17,7 @@
#include <linux/elf.h>
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/of_platform.h>
#include <linux/personality.h>
#include <linux/preempt.h>
#include <linux/printk.h>
@@ -178,6 +179,10 @@ static int c_show(struct seq_file *m, vo
{
int i, j;
bool compat = personality(current->personality) == PER_LINUX32;
+ struct device_node *np;
+ const char *model;
+ const char *serial;
+ u32 revision;
for_each_online_cpu(i) {
struct cpuinfo_arm64 *cpuinfo = &per_cpu(cpu_data, i);
@@ -238,6 +243,24 @@ static int c_show(struct seq_file *m, vo
seq_printf(m, "CPU revision\t: %d\n\n", MIDR_REVISION(midr));
}
+ np = of_find_node_by_path("/system");
+ if (np) {
+ if (!of_property_read_u32(np, "linux,revision", &revision))
+ seq_printf(m, "Revision\t: %04x\n", revision);
+ of_node_put(np);
+ }
+
+ np = of_find_node_by_path("/");
+ if (np) {
+ if (!of_property_read_string(np, "serial-number",
+ &serial))
+ seq_printf(m, "Serial\t\t: %s\n", serial);
+ if (!of_property_read_string(np, "model",
+ &model))
+ seq_printf(m, "Model\t\t: %s\n", model);
+ of_node_put(np);
+ }
+
return 0;
}