diff options
Diffstat (limited to 'src/arch/arm64/armv8/lib')
| -rw-r--r-- | src/arch/arm64/armv8/lib/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/arch/arm64/armv8/lib/clock.c | 32 |
2 files changed, 33 insertions, 1 deletions
diff --git a/src/arch/arm64/armv8/lib/Makefile.inc b/src/arch/arm64/armv8/lib/Makefile.inc index bda203b0d5..3e393bbe23 100644 --- a/src/arch/arm64/armv8/lib/Makefile.inc +++ b/src/arch/arm64/armv8/lib/Makefile.inc @@ -20,7 +20,7 @@ ## ################################################################################ -lib_access = pstate.c sysctrl.c cache.c tlb.c misc.c +lib_access = pstate.c sysctrl.c cache.c tlb.c misc.c clock.c ifeq ($(CONFIG_ARCH_BOOTBLOCK_ARMV8_64),y) bootblock-y += $(lib_access) diff --git a/src/arch/arm64/armv8/lib/clock.c b/src/arch/arm64/armv8/lib/clock.c new file mode 100644 index 0000000000..00c9208e5e --- /dev/null +++ b/src/arch/arm64/armv8/lib/clock.c @@ -0,0 +1,32 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; version 2 of + * the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + * + * clock.c: Functions for accessing clock and timer related registers + * Reference: ARM Architecture Reference Manual, ARMv8-A edition + */ + +#include <stdint.h> + +#include <arch/clock.h> + +void set_cntfrq(uint32_t freq) +{ + __asm__ __volatile__("msr cntfrq_el0, %0" :: "r"(freq)); +} |