#include <delay.h>
#include <device/mmio.h>
#include <arch/lib_helpers.h>
#include <console/console.h>
#include <soc/clock.h>
#include <soc/timer.h>
#include <stdint.h>
#include <timer.h>
#include <soc/addressmap.h>
#include <assert.h>

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Data Structures
struct	cn81xx_timer

Macros
#define	GTI_CC_CNTCR_EN (1 << 0)

#define	GTI_CC_CNTCR_HDBG (1 << 1)

#define	GTI_CC_CNTCR_FCREQ (1 << 8)

#define	GTI_CC_CNTSR_DBGH (1 << 1)

#define	GTI_CC_CNTSR_FCACK (1 << 8)

#define	GTI_CWD_WDOG_MODE_SHIFT 0

#define	GTI_CWD_WDOG_MODE_MASK 0x3

#define	GTI_CWD_WDOG_STATE_SHIFT 2

#define	GTI_CWD_WDOG_STATE_MASK 0x3

#define	GTI_CWD_WDOG_LEN_SHIFT 4

#define	GTI_CWD_WDOG_LEN_MASK 0xffff

#define	GTI_CWD_WDOG_CNT_SHIFT 20

#define	GTI_CWD_WDOG_CNT_MASK 0xffffff

#define	GTI_CWD_WDOC_DSTOP (1 << 44)

#define	GTI_CWD_WDOC_GSTOP (1 << 45)

Functions
	check_member (cn81xx_timer, cc_imp_ctl, 0x100)

	check_member (cn81xx_timer, ctl_cntacr0, 0x20040)

	check_member (cn81xx_timer, cwd_wdog[0], 0x40000)

	check_member (cn81xx_timer, cwd_poke[0], 0x50000)

static uint64_t	timer_raw_value (void)

void	timer_monotonic_get (struct mono_time *mt)
	Get GTI counter value. More...

void	init_timer (void)
	Init Global System Timers Unit (GTI). More...

void	soc_timer_init (void)

void	watchdog_set (const size_t index, unsigned int timeout_ms)
	Setup the watchdog to expire in timeout_ms milliseconds. More...

void	watchdog_poke (const size_t index)
	Signal the watchdog that we are still running. More...

void	watchdog_disable (const size_t index)
	Disable the hardware watchdog. More...

int	watchdog_is_running (const size_t index)
	Return true if the watchdog is configured and running. More...

Variables
static const size_t	tickrate = 1000000

Macro Definition Documentation

◆ GTI_CC_CNTCR_EN

#define GTI_CC_CNTCR_EN (1 << 0)

Definition at line 54 of file timer.c.

◆ GTI_CC_CNTCR_FCREQ

#define GTI_CC_CNTCR_FCREQ (1 << 8)

Definition at line 56 of file timer.c.

◆ GTI_CC_CNTCR_HDBG

#define GTI_CC_CNTCR_HDBG (1 << 1)

Definition at line 55 of file timer.c.

◆ GTI_CC_CNTSR_DBGH

#define GTI_CC_CNTSR_DBGH (1 << 1)

Definition at line 58 of file timer.c.

◆ GTI_CC_CNTSR_FCACK

#define GTI_CC_CNTSR_FCACK (1 << 8)

Definition at line 59 of file timer.c.

◆ GTI_CWD_WDOC_DSTOP

#define GTI_CWD_WDOC_DSTOP (1 << 44)

Definition at line 69 of file timer.c.

◆ GTI_CWD_WDOC_GSTOP

#define GTI_CWD_WDOC_GSTOP (1 << 45)

Definition at line 70 of file timer.c.

◆ GTI_CWD_WDOG_CNT_MASK

#define GTI_CWD_WDOG_CNT_MASK 0xffffff

Definition at line 68 of file timer.c.

◆ GTI_CWD_WDOG_CNT_SHIFT

#define GTI_CWD_WDOG_CNT_SHIFT 20

Definition at line 67 of file timer.c.

◆ GTI_CWD_WDOG_LEN_MASK

#define GTI_CWD_WDOG_LEN_MASK 0xffff

Definition at line 66 of file timer.c.

◆ GTI_CWD_WDOG_LEN_SHIFT

#define GTI_CWD_WDOG_LEN_SHIFT 4

Definition at line 65 of file timer.c.

◆ GTI_CWD_WDOG_MODE_MASK

#define GTI_CWD_WDOG_MODE_MASK 0x3

Definition at line 62 of file timer.c.

◆ GTI_CWD_WDOG_MODE_SHIFT

#define GTI_CWD_WDOG_MODE_SHIFT 0

Definition at line 61 of file timer.c.

◆ GTI_CWD_WDOG_STATE_MASK

#define GTI_CWD_WDOG_STATE_MASK 0x3

Definition at line 64 of file timer.c.

◆ GTI_CWD_WDOG_STATE_SHIFT

#define GTI_CWD_WDOG_STATE_SHIFT 2

Definition at line 63 of file timer.c.

Function Documentation

◆ check_member() [1/4]

check_member	(	cn81xx_timer	,
		cc_imp_ctl	,
		0x100
	)

◆ check_member() [2/4]

check_member	(	cn81xx_timer	,
		ctl_cntacr0	,
		0x20040
	)

◆ check_member() [3/4]

check_member	(	cn81xx_timer	,
		cwd_poke	[0],
		0x50000
	)

◆ check_member() [4/4]

check_member	(	cn81xx_timer	,
		cwd_wdog	[0],
		0x40000
	)

◆ init_timer()

void init_timer ( void )

Init Global System Timers Unit (GTI).

Configure timer to run at 1MHz tick-rate.

Definition at line 95 of file timer.c.

References cn81xx_timer::cc_cntcr, cn81xx_timer::cc_cntfid0, cn81xx_timer::cc_cntrate, cn81xx_timer::cc_imp_ctl, cn81xx_timer::ctl_cntfrq, GTI_CC_CNTCR_EN, GTI_PF_BAR0, setbits32, thunderx_get_io_clock(), tickrate, and write32().

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◆ soc_timer_init()

void soc_timer_init ( void )

Definition at line 119 of file timer.c.

References tickrate.

Referenced by mainboard_init().

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◆ timer_monotonic_get()

void timer_monotonic_get ( struct mono_time * mt )

Get GTI counter value.

Parameters

mt	Structure to fill

Definition at line 83 of file timer.c.

References mono_time_set_usecs(), and timer_raw_value().

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◆ timer_raw_value()

static uint64_t timer_raw_value ( void )

static

Definition at line 72 of file timer.c.

References cn81xx_timer::cc_cntcv, GTI_PF_BAR0, and read64().

Referenced by timer_monotonic_get().

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◆ watchdog_disable()

void watchdog_disable ( const size_t index )

Disable the hardware watchdog.

Parameters

index Index of watchdog to configure.

Definition at line 190 of file timer.c.

References ARRAY_SIZE, assert, BIOS_DEBUG, cn81xx_timer::cwd_wdog, GTI_PF_BAR0, printk, and write64().

Referenced by bdk_watchdog_disable(), and soc_final().

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◆ watchdog_is_running()

int watchdog_is_running ( const size_t index )

Return true if the watchdog is configured and running.

Parameters

index Index of watchdog to configure.

Returns: Non-zero if watchdog is running.

Definition at line 209 of file timer.c.

References ARRAY_SIZE, assert, cn81xx_timer::cwd_wdog, GTI_CWD_WDOG_MODE_MASK, GTI_CWD_WDOG_MODE_SHIFT, GTI_PF_BAR0, read64(), and val.

Referenced by bdk_watchdog_is_running().

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◆ watchdog_poke()

void watchdog_poke ( const size_t index )

Signal the watchdog that we are still running.

Parameters

index Index of watchdog to configure.

Definition at line 174 of file timer.c.

References ARRAY_SIZE, assert, cn81xx_timer::cwd_poke, GTI_PF_BAR0, and write64().

Referenced by bdk_watchdog_poke(), bootblock_soc_init(), and platform_romstage_main().

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◆ watchdog_set()

void watchdog_set	(	const size_t	index,
		unsigned int	timeout_ms
	)

Setup the watchdog to expire in timeout_ms milliseconds.

When the watchdog expires, the chip three things happen: 1) Expire 1: interrupt that is ignored by the BDK 2) Expire 2: DEL3T interrupt, which is disabled and ignored 3) Expire 3: Soft reset of the chip

Since we want a soft reset, we actually program the watchdog to expire at the timeout / 3.

Parameters

index	Index of watchdog to configure
timeout_ms	Timeout in milliseconds.

Definition at line 137 of file timer.c.

References ARRAY_SIZE, assert, BIOS_DEBUG, clrsetbits64, cn81xx_timer::cwd_wdog, GTI_CWD_WDOG_LEN_MASK, GTI_CWD_WDOG_LEN_SHIFT, GTI_CWD_WDOG_MODE_MASK, GTI_CWD_WDOG_MODE_SHIFT, GTI_PF_BAR0, printk, and thunderx_get_io_clock().

Referenced by bdk_watchdog_set(), and bootblock_soc_init().

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Variable Documentation

◆ tickrate

const size_t tickrate = 1000000

static

Definition at line 89 of file timer.c.

Referenced by init_timer(), and soc_timer_init().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ GTI_CC_CNTCR_EN

◆ GTI_CC_CNTCR_FCREQ

◆ GTI_CC_CNTCR_HDBG

◆ GTI_CC_CNTSR_DBGH

◆ GTI_CC_CNTSR_FCACK

◆ GTI_CWD_WDOC_DSTOP

◆ GTI_CWD_WDOC_GSTOP

◆ GTI_CWD_WDOG_CNT_MASK

◆ GTI_CWD_WDOG_CNT_SHIFT

◆ GTI_CWD_WDOG_LEN_MASK

◆ GTI_CWD_WDOG_LEN_SHIFT

◆ GTI_CWD_WDOG_MODE_MASK

◆ GTI_CWD_WDOG_MODE_SHIFT

◆ GTI_CWD_WDOG_STATE_MASK

◆ GTI_CWD_WDOG_STATE_SHIFT

Function Documentation

◆ check_member() [1/4]

◆ check_member() [2/4]

◆ check_member() [3/4]

◆ check_member() [4/4]

◆ init_timer()

◆ soc_timer_init()

◆ timer_monotonic_get()

◆ timer_raw_value()

◆ watchdog_disable()

◆ watchdog_is_running()

◆ watchdog_poke()

◆ watchdog_set()

Variable Documentation

◆ tickrate