From ab699846018d5a697d9d2c3f88031d932cc5fe58 Mon Sep 17 00:00:00 2001 From: huang lin Date: Fri, 20 Jun 2014 11:34:46 +0800 Subject: libpayload: Add Rock Chip drivers Add support: 1)Support driver rktimer 2)Support driver rkserial BUG=chrome-os-partner:29778 TEST=emerge-veyron libpayload Original-Change-Id: I2cccedf3b62883dd372842a7972e93f2ebbfb282 Original-Signed-off-by: huang lin Original-Reviewed-on: https://chromium-review.googlesource.com/206184 Original-Reviewed-by: Julius Werner Original-Tested-by: Julius Werner Original-Commit-Queue: Julius Werner (cherry picked from commit 387450d7c36b201bd177d46eb9f1d280fc043aab) Signed-off-by: Marc Jones Change-Id: Ia6b7a8ee2439a6f2bf7577df822d3f4f3a1e441c Reviewed-on: http://review.coreboot.org/8127 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks --- payloads/libpayload/drivers/timer/rktimer.c | 46 +++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 payloads/libpayload/drivers/timer/rktimer.c (limited to 'payloads/libpayload/drivers/timer') diff --git a/payloads/libpayload/drivers/timer/rktimer.c b/payloads/libpayload/drivers/timer/rktimer.c new file mode 100644 index 0000000000..040ac32fa2 --- /dev/null +++ b/payloads/libpayload/drivers/timer/rktimer.c @@ -0,0 +1,46 @@ + +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Rockchip Electronics + * + * 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 +#include +#include +struct rk_timer { + u32 timer_load_count0; + u32 timer_load_count1; + u32 timer_curr_value0; + u32 timer_curr_value1; + u32 timer_ctrl_reg; + u32 timer_int_status; +}; + +uint64_t timer_hz(void) +{ + return 24000000; +} + +uint64_t timer_raw_value(void) +{ + uint64_t upper; + uint64_t lower; + struct rk_timer *rk_timer; + rk_timer = (struct rk_timer *) CONFIG_LP_TIMER_RK_ADDRESS; + lower = (uint64_t) rk_timer->timer_curr_value0; + upper = (uint64_t) rk_timer->timer_curr_value1; + return (upper << 32) | lower; +} -- cgit v1.2.3