C++ (Cpp) read_id_aa64mmfr0_el1 Beispiele

Beispiel #1

Datei: xlat_tables_arch.c Projekt: ARM-software/arm-trusted-firmware

/*
 * Returns true if the provided granule size is supported, false otherwise.
 */
bool xlat_arch_is_granule_size_supported(size_t size)
{
	u_register_t id_aa64mmfr0_el1 = read_id_aa64mmfr0_el1();

	if (size == PAGE_SIZE_4KB) {
		return ((id_aa64mmfr0_el1 >> ID_AA64MMFR0_EL1_TGRAN4_SHIFT) &
			 ID_AA64MMFR0_EL1_TGRAN4_MASK) ==
			 ID_AA64MMFR0_EL1_TGRAN4_SUPPORTED;
	} else if (size == PAGE_SIZE_16KB) {

Beispiel #2

Datei: xlat_tables.c Projekt: freedomtan/arm-trusted-firmware

static unsigned long long get_max_supported_pa(void)
{
	u_register_t pa_range = read_id_aa64mmfr0_el1() &
						ID_AA64MMFR0_EL1_PARANGE_MASK;

	/* All other values are reserved */
	assert(pa_range < ARRAY_SIZE(pa_range_bits_arr));

	return (1ULL << pa_range_bits_arr[pa_range]) - 1ULL;
}