summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-keystone/platsmp.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /arch/arm/mach-keystone/platsmp.c
parentInitial commit. (diff)
downloadlinux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz
linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-keystone/platsmp.c')
-rw-r--r--arch/arm/mach-keystone/platsmp.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/mach-keystone/platsmp.c b/arch/arm/mach-keystone/platsmp.c
new file mode 100644
index 000000000..673fcf3b3
--- /dev/null
+++ b/arch/arm/mach-keystone/platsmp.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Keystone SOC SMP platform code
+ *
+ * Copyright 2013 Texas Instruments, Inc.
+ * Cyril Chemparathy <cyril@ti.com>
+ * Santosh Shilimkar <santosh.shillimkar@ti.com>
+ *
+ * Based on platsmp.c, Copyright (C) 2002 ARM Ltd.
+ */
+
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/io.h>
+#include <linux/pgtable.h>
+
+#include <asm/smp_plat.h>
+#include <asm/prom.h>
+#include <asm/tlbflush.h>
+
+#include "keystone.h"
+
+static int keystone_smp_boot_secondary(unsigned int cpu,
+ struct task_struct *idle)
+{
+ unsigned long start = virt_to_idmap(&secondary_startup);
+ int error;
+
+ pr_debug("keystone-smp: booting cpu %d, vector %08lx\n",
+ cpu, start);
+
+ error = keystone_cpu_smc(KEYSTONE_MON_CPU_UP_IDX, cpu, start);
+ if (error)
+ pr_err("CPU %d bringup failed with %d\n", cpu, error);
+
+ return error;
+}
+
+const struct smp_operations keystone_smp_ops __initconst = {
+ .smp_boot_secondary = keystone_smp_boot_secondary,
+};