From ac490b8a6bb31bf39fe8087ac3ba6a9b814beb87 Mon Sep 17 00:00:00 2001 From: "jinkun.hong" Date: Sun, 22 Jun 2014 20:40:39 -0700 Subject: coreboot: rk3288: Add a stub implementation of the rk3288 SOC Most things still needs to be filled in, but this will allow us to build boards which use this SOC. BUG=chrome-os-partner:29778 TEST=emerge-veyron coreboot Original-Change-Id: If643d620c5fb8951faaf1ccde400a8e9ed7db3bc Original-Signed-off-by: jinkun.hong Original-Reviewed-on: https://chromium-review.googlesource.com/205069 Original-Reviewed-by: Julius Werner Original-Reviewed-by: David Hendricks Original-Commit-Queue: David Hendricks Original-Tested-by: David Hendricks (cherry picked from commit 2f72473a8c2b3fe21d77b351338e6209035878fb) Signed-off-by: Marc Jones Change-Id: I53fd0ced42f6ef191d7bf80d8b823bb880344239 Reviewed-on: http://review.coreboot.org/8653 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer --- src/soc/rockchip/rk3288/timer.c | 58 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 src/soc/rockchip/rk3288/timer.c (limited to 'src/soc/rockchip/rk3288/timer.c') diff --git a/src/soc/rockchip/rk3288/timer.c b/src/soc/rockchip/rk3288/timer.c new file mode 100644 index 0000000000..3a2c34d341 --- /dev/null +++ b/src/soc/rockchip/rk3288/timer.c @@ -0,0 +1,58 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip 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 + */ + +#include +#include +#include +#include +#include "timer.h" + +void init_timer(void) +{ +} + +void rk3288_init_timer(void) +{ + write32(TIMER_LOAD_VAL, &timer7_ptr->timer_load_count0); + write32(TIMER_LOAD_VAL, &timer7_ptr->timer_load_count1); + write32(1, &timer7_ptr->timer_ctrl_reg); +} + +/* delay x useconds */ +void udelay(unsigned usec) +{ + struct mono_time current, end; + + timer_monotonic_get(¤t); + end = current; + mono_time_add_usecs(&end, usec); + + if (mono_time_after(¤t, &end)) { + printk(BIOS_EMERG, "udelay: 0x%08x is impossibly large\n", + usec); + /* There's not much we can do if usec is too big. Use a long, + * paranoid delay value and hope for the best... */ + end = current; + mono_time_add_usecs(&end, USECS_PER_SEC); + } + + while (mono_time_before(¤t, &end)) + timer_monotonic_get(¤t); +} + -- cgit v1.2.3