openwrt/target/linux/bcm27xx/patches-5.15/950-0169-arch-arm64-Add-Revision-Serial-Model-to-cpuinfo.patch
Álvaro Fernández Rojas 20ea6adbf1 bcm27xx: add support for linux v5.15
Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2022-05-17 15:11:22 +02:00

59 lines
1.6 KiB
Diff

From c1c1dc795330dc5f53396612c0e91a106d91ef99 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 3 Sep 2019 18:17:25 +0100
Subject: [PATCH] arch/arm64: Add Revision, Serial, Model to cpuinfo
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm64/kernel/cpuinfo.c | 25 +++++++++++++++++++++++++
1 file changed, 25 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>
@@ -140,6 +141,10 @@ 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);
@@ -200,6 +205,26 @@ static int c_show(struct seq_file *m, vo
seq_printf(m, "CPU revision\t: %d\n\n", MIDR_REVISION(midr));
}
+ seq_printf(m, "Hardware\t: BCM2835\n");
+
+ 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;
}