Function platform_start

freebsd/mips/broadcom/bcm_machdep.c:576–622

}

void
platform_start(__register_t a0, __register_t a1, __register_t a2,
	       __register_t a3)
{
	vm_offset_t 		 kernend;
	uint64_t		 platform_counter_freq;
	int			 error;

	/* clear the BSS and SBSS segments */
	kernend = (vm_offset_t)&end;
	memset(&edata, 0, kernend - (vm_offset_t)(&edata));

	mips_postboot_fixup();

	/* Initialize pcpu stuff */
	mips_pcpu0_init();

#ifdef CFE
	/*
	 * Initialize CFE firmware trampolines. This must be done
	 * before any CFE APIs are called, including writing
	 * to the CFE console.
	 *
	 * CFE passes the following values in registers:
	 * a0: firmware handle
	 * a2: firmware entry point
	 * a3: entry point seal
	 */
	if (a3 == CFE_EPTSEAL)
		cfe_init(a0, a2);
#endif

	/* Init BCM platform data */
	if ((error = bcm_init_platform_data(&bcm_platform_data)))
		panic("bcm_init_platform_data() failed: %d", error);

	platform_counter_freq = bcm_get_cpufreq(bcm_get_platform());

	/* CP0 ticks every two cycles */
	mips_timer_early_init(platform_counter_freq / 2);

	cninit();

	mips_init();

	mips_timer_init_params(platform_counter_freq, 1);
}

/*
 * CFE-based EARLY_PRINTF support. To use, add the following to the kernel