mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 17:58:23 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2003
|
|
* Texas Instruments <www.ti.com>
|
|
*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Marius Groeger <mgroeger@sysgo.de>
|
|
*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Alex Zuepke <azu@sysgo.de>
|
|
*
|
|
* (C) Copyright 2002-2004
|
|
* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
|
|
*
|
|
* (C) Copyright 2004
|
|
* Philippe Robin, ARM Ltd. <philippe.robin@arm.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
|
|
#define TIMER_ENABLE (1 << 7)
|
|
#define TIMER_MODE_MSK (1 << 6)
|
|
#define TIMER_MODE_FR (0 << 6)
|
|
#define TIMER_MODE_PD (1 << 6)
|
|
|
|
#define TIMER_INT_EN (1 << 5)
|
|
#define TIMER_PRS_MSK (3 << 2)
|
|
#define TIMER_PRS_8S (1 << 3)
|
|
#define TIMER_SIZE_MSK (1 << 2)
|
|
#define TIMER_ONE_SHT (1 << 0)
|
|
|
|
int timer_init (void)
|
|
{
|
|
ulong tmr_ctrl_val;
|
|
|
|
/* 1st disable the Timer */
|
|
tmr_ctrl_val = *(volatile ulong *)(CONFIG_SYS_TIMERBASE + 8);
|
|
tmr_ctrl_val &= ~TIMER_ENABLE;
|
|
*(volatile ulong *)(CONFIG_SYS_TIMERBASE + 8) = tmr_ctrl_val;
|
|
|
|
/*
|
|
* The Timer Control Register has one Undefined/Shouldn't Use Bit
|
|
* So we should do read/modify/write Operation
|
|
*/
|
|
|
|
/*
|
|
* Timer Mode : Free Running
|
|
* Interrupt : Disabled
|
|
* Prescale : 8 Stage, Clk/256
|
|
* Tmr Siz : 16 Bit Counter
|
|
* Tmr in Wrapping Mode
|
|
*/
|
|
tmr_ctrl_val = *(volatile ulong *)(CONFIG_SYS_TIMERBASE + 8);
|
|
tmr_ctrl_val &= ~(TIMER_MODE_MSK | TIMER_INT_EN | TIMER_PRS_MSK | TIMER_SIZE_MSK | TIMER_ONE_SHT );
|
|
tmr_ctrl_val |= (TIMER_ENABLE | TIMER_PRS_8S);
|
|
|
|
*(volatile ulong *)(CONFIG_SYS_TIMERBASE + 8) = tmr_ctrl_val;
|
|
|
|
return 0;
|
|
}
|
|
|