void __init cpu_cache_init()

in mm/cache.c [291:360]

• 48 lines of code
• 13 McCabe index (conditional complexity)

void __init cpu_cache_init(void)
{
	unsigned int cache_disabled = 0;

#ifdef SH_CCR
	cache_disabled = !(__raw_readl(SH_CCR) & CCR_CACHE_ENABLE);
#endif

	compute_alias(&boot_cpu_data.icache);
	compute_alias(&boot_cpu_data.dcache);
	compute_alias(&boot_cpu_data.scache);

	__flush_wback_region		= noop__flush_region;
	__flush_purge_region		= noop__flush_region;
	__flush_invalidate_region	= noop__flush_region;

	/*
	 * No flushing is necessary in the disabled cache case so we can
	 * just keep the noop functions in local_flush_..() and __flush_..()
	 */
	if (unlikely(cache_disabled))
		goto skip;

	if (boot_cpu_data.type == CPU_J2) {
		extern void __weak j2_cache_init(void);

		j2_cache_init();
	} else if (boot_cpu_data.family == CPU_FAMILY_SH2) {
		extern void __weak sh2_cache_init(void);

		sh2_cache_init();
	}

	if (boot_cpu_data.family == CPU_FAMILY_SH2A) {
		extern void __weak sh2a_cache_init(void);

		sh2a_cache_init();
	}

	if (boot_cpu_data.family == CPU_FAMILY_SH3) {
		extern void __weak sh3_cache_init(void);

		sh3_cache_init();

		if ((boot_cpu_data.type == CPU_SH7705) &&
		    (boot_cpu_data.dcache.sets == 512)) {
			extern void __weak sh7705_cache_init(void);

			sh7705_cache_init();
		}
	}

	if ((boot_cpu_data.family == CPU_FAMILY_SH4) ||
	    (boot_cpu_data.family == CPU_FAMILY_SH4A) ||
	    (boot_cpu_data.family == CPU_FAMILY_SH4AL_DSP)) {
		extern void __weak sh4_cache_init(void);

		sh4_cache_init();

		if ((boot_cpu_data.type == CPU_SH7786) ||
		    (boot_cpu_data.type == CPU_SHX3)) {
			extern void __weak shx3_cache_init(void);

			shx3_cache_init();
		}
	}

skip:
	emit_cache_params();
}