From 2dc333d65c6c25531984419669027fa547a12c15 Mon Sep 17 00:00:00 2001
From: Andy Ross <andrew.j.ross@intel.com>
Date: Thu, 2 Sep 2021 08:48:42 -0700
Subject: [PATCH] soc: intel_adsp: Abstract out a prid() accessor

Useful utility.  Should probably have this in the arch layer.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
---
 soc/xtensa/intel_adsp/common/soc_mp.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/soc/xtensa/intel_adsp/common/soc_mp.c b/soc/xtensa/intel_adsp/common/soc_mp.c
index 7d1f69772e6..9a575dd0680 100644
--- a/soc/xtensa/intel_adsp/common/soc_mp.c
+++ b/soc/xtensa/intel_adsp/common/soc_mp.c
@@ -264,6 +264,14 @@ bool arch_cpu_active(int cpu_num)
 	return !!(cpu_mask & BIT(cpu_num));
 }
 
+static ALWAYS_INLINE uint32_t prid(void)
+{
+	uint32_t prid;
+
+	__asm__ volatile("rsr %0, PRID" : "=r"(prid));
+	return prid;
+}
+
 void arch_start_cpu(int cpu_num, k_thread_stack_t *stack, int sz,
 		    arch_cpustart_t fn, void *arg)
 {