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Diffstat (limited to 'payloads/libpayload/arch/mips/timer.c')
-rw-r--r-- | payloads/libpayload/arch/mips/timer.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/payloads/libpayload/arch/mips/timer.c b/payloads/libpayload/arch/mips/timer.c new file mode 100644 index 0000000000..1710a322e2 --- /dev/null +++ b/payloads/libpayload/arch/mips/timer.c @@ -0,0 +1,43 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2014 Imagination Technologies + * + * 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 + */ + +#include <libpayload.h> +#include <arch/cpu.h> + +/** + * @ingroup arch + * Global variable containing the speed of the processor in KHz. + */ +u32 cpu_khz; + +/** + * Calculate the speed of the processor for use in delays. + * + * @return The CPU speed in kHz. + */ +unsigned int get_cpu_speed(void) +{ + if (IMG_PLATFORM_ID() != IMG_PLATFORM_ID_SILICON) + cpu_khz = 50000U; /* FPGA board */ + /* else { + * TODO find CPU frequency on the real SOC + } */ + + return cpu_khz; +} |