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soc: intel_adsp: Abstract out a prid() accessor

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

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
This commit is contained in:
Andy Ross 2021-09-02 08:48:42 -07:00 • committed by Anas Nashif
commit 2dc333d65c
1 changed files with 8 additions and 0 deletions
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8
soc/xtensa/intel_adsp/common/soc_mp.c
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@ -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)
{