linux/arch/arm/plat-mxc/cpu.c

#include <linux/module.h>
#include <mach/hardware.h>

unsigned int __mxc_cpu_type;
EXPORT_SYMBOL(__mxc_cpu_type);

void mxc_set_cpu_type(unsigned int type)
{
	__mxc_cpu_type = type;
}

void imx_print_silicon_rev(const char *cpu, int srev)
{
	if (srev == IMX_CHIP_REVISION_UNKNOWN)
		pr_info("CPU identified as %s, unknown revision\n", cpu);
	else
		pr_info("CPU identified as %s, silicon rev %d.%d\n",
				cpu, (srev >> 4) & 0xf, srev & 0xf);
}