LEON3 and LEON4

LEON3 and LEON4 Board Support Package. More...

Modules
	GR740 Bootstrap Signals
	This group contains the GR740 Bootstrap Signals interfaces.
	GR740 I/0 and PLL Configuration
	This group contains the GR740 I/0 and PLL Configuration interfaces.
	GR740 Temperatur Sensor Controller
	This group contains the GR740 Temperatur Sensor Controller interfaces.
	LEON3 AMBA Driver Handler
	AMBA Plag & Play Bus Driver Macros.

Files
file	gr_leon4_n2x.h
	This header file provides interfaces of the GR-CPCI-LEON4-N2X (NGFP) PCI Peripheral driver.
file	ckinit.c
	This source file contains the Clock Driver implementation.
file	printk_support.c
	This source file contains the definition of BSP_output_char and BSP_poll_char.
file	gnatsupp.c
	Support for gnat/rtems interrupts and exception handling.
file	bsp.h
	Global BSP definitions.
file	irq.h
	LEON3 generic shared IRQ setup.
file	irqimpl.h
	This header file provides interfaces used by the interrupt support implementation.
file	leon3.h
	This header file provides interfaces used by the BSP implementation.
file	leon.h
	LEON3 BSP data types and macros.
file	tm27.h
	Implementations for interrupt mechanisms for Time Test 27.
file	bspsmp.c
	LEON3 SMP BSP Support.
file	bspstart.c
	This source file contains the implementation of bsp_start() and definitions of BSP-specific objects.
file	cache.c
	This source file contains the implementation of the Cache Manager.
file	cpucounter.c
	This source file contains the implementation of the CPU Counter.
file	eirq.c
	This source file contains the implementation of the interrupt controller support.
file	gettargethash.c
	This source file contains the sparc/leon3 implementation of rtems_get_target_hash().
file	setvec.c
	Install an interrupt vector on SPARC.
file	bsp_isr_handler.c
	This source file contains the implementation of _SPARC_Interrupt_dispatch().

Data Structures
struct	leon3_timecounter
	Represents the LEON3-specific timecounter. More...

Macros
#define	LEON3   1
#define	BSP_FEATURE_IRQ_EXTENSION
#define	BSP_IDLE_TASK_BODY   bsp_idle_thread
#define	BSP_NUMBER_OF_TERMIOS_PORTS   8
#define	RTEMS_BSP_NETWORK_DRIVER_NAME_OPENETH   "open_eth1"
#define	RTEMS_BSP_NETWORK_DRIVER_ATTACH_OPENETH    rtems_leon_open_eth_driver_attach
#define	RTEMS_BSP_NETWORK_DRIVER_NAME_SMC91111   "smc_eth1"
#define	RTEMS_BSP_NETWORK_DRIVER_ATTACH_SMC91111    rtems_smc91111_driver_attach_leon3
#define	RTEMS_BSP_NETWORK_DRIVER_NAME_GRETH   "gr_eth1"
#define	RTEMS_BSP_NETWORK_DRIVER_ATTACH_GRETH    rtems_leon_greth_driver_attach
#define	RTEMS_BSP_NETWORK_DRIVER_NAME   RTEMS_BSP_NETWORK_DRIVER_NAME_GRETH
#define	RTEMS_BSP_NETWORK_DRIVER_ATTACH   RTEMS_BSP_NETWORK_DRIVER_ATTACH_GRETH
#define	HAS_SMC91111
#define	GRETH_SUPPORTED
#define	GRETH_MEM_LOAD(addr)   leon_r32_no_cache((uintptr_t)addr)
#define	AMBAPPBUS_INFO_AVAIL   /* AMBAPP Bus driver */
#define	APBUART_INFO_AVAIL   /* APBUART Console driver */
#define	GPTIMER_INFO_AVAIL   /* GPTIMER Timer driver */
#define	GRETH_INFO_AVAIL   /* GRETH Ethernet driver */
#define	LEON3_IRQCTRL_ACQUIRE(_lock_context)    rtems_interrupt_lock_acquire( &LEON3_IrqCtrl_Lock, _lock_context )
	Acquires the interrupt controller lock.
#define	LEON3_IRQCTRL_RELEASE(_lock_context)    rtems_interrupt_lock_release( &LEON3_IrqCtrl_Lock, _lock_context )
	Releases the interrupt controller lock.
#define	LEON3_REG_CACHE_CTRL_FI   0x00200000U
	This constant represents the flush instruction cache flag of the LEON cache control register.
#define	LEON3_REG_CACHE_CTRL_DS   0x00800000U
	This constant represents the data cache snooping enable flag of the LEON cache control register.
#define	LEON3_CLOCK_INDEX   0
	This constant defines the index of the GPTIMER timer used by the clock driver.
#define	LEON3_COUNTER_GPTIMER_INDEX   ( LEON3_CLOCK_INDEX + 1 )
	This constant defines the index of the GPTIMER timer used by the CPU counter if the CPU counter uses the GPTIMER.
#define	LEON3_GPTIMER_0_FREQUENCY_SET_BY_BOOT_LOADER   1000000
	This constant defines the frequency set by the boot loader of the first GPTIMER instance.

Typedefs
typedef void(*	bsp_shared_isr) (void *arg)

Functions
void *	bsp_idle_thread (uintptr_t ignored)
	Optimized idle task.
int	rtems_leon_open_eth_driver_attach (struct rtems_bsdnet_ifconfig *config, int attach)
int	rtems_smc91111_driver_attach_leon3 (struct rtems_bsdnet_ifconfig *config, int attach)
int	rtems_leon_greth_driver_attach (struct rtems_bsdnet_ifconfig *config, int attach)
rtems_isr_entry	set_vector (rtems_isr_entry handler, rtems_vector_number vector, int type)
	Install an interrupt handler.
void	BSP_fatal_exit (uint32_t error)
void	rtems_bsp_delay (int usecs)
void	leon3_ext_irq_init (irqamp *regs)
	Initializes the interrupt controller for the boot processor.
RTEMS_NO_RETURN void	leon3_power_down_loop (void)
	Sets asr19 to zero to enter the power-down mode of the processor in an infinite loop.

Variables
int	CPU_SPARC_HAS_SNOOPING
int	RAM_START
int	RAM_END
int	RAM_SIZE
int	PROM_START
int	PROM_END
int	PROM_SIZE
int	CLOCK_SPEED
int	end
uint32_t	LEON3_Cpu_Index
	This object provides the index of the boot processor.
rtems_interrupt_lock	LEON3_IrqCtrl_Lock
	This lock serializes the interrupt controller access.
irqamp *	LEON3_IrqCtrl_Regs
	This pointer provides the IRQ(A)MP register block address.
struct ambapp_dev *	LEON3_IrqCtrl_Adev
	This pointer provides the IRQ(A)MP device information block.
uint32_t	LEON3_IrqCtrl_EIrq
	This object provides the interrupt number used to multiplex extended interrupts or is zero if no extended interrupts are available.
int	leon3_timer_core_index
	This object lets the user override which on-chip GPTIMER core will be used for system clock timer.
unsigned int	leon3_timer_prescaler
	This object lets the user override system clock timer prescaler.
gptimer *	LEON3_Timer_Regs
	This pointer provides the GPTIMER register block address.
struct ambapp_dev *	LEON3_Timer_Adev
	This pointer provides the GPTIMER device information block.
apbuart *	leon3_debug_uart
	This pointer provides the debug APBUART register block address.
leon3_timecounter	leon3_timecounter_instance
	Provides the LEON3-specific timecounter.

Detailed Description

LEON3 and LEON4 Board Support Package.

Macro Definition Documentation

LEON3_GPTIMER_0_FREQUENCY_SET_BY_BOOT_LOADER

#define LEON3_GPTIMER_0_FREQUENCY_SET_BY_BOOT_LOADER   1000000

This constant defines the frequency set by the boot loader of the first GPTIMER instance.

We assume that a boot loader (usually GRMON) initialized the GPTIMER 0 to run with 1MHz. This is used to determine all clock frequencies of the PnP devices. See also ambapp_freq_init() and ambapp_freq_get().

LEON3_IRQCTRL_ACQUIRE

#define LEON3_IRQCTRL_ACQUIRE

(

_lock_context

)

rtems_interrupt_lock_acquire( &LEON3_IrqCtrl_Lock, _lock_context )

Acquires the interrupt controller lock.

Parameters

[out]

_lock_context

is the lock context.

LEON3_IRQCTRL_RELEASE

#define LEON3_IRQCTRL_RELEASE

(

_lock_context

)

rtems_interrupt_lock_release( &LEON3_IrqCtrl_Lock, _lock_context )

Releases the interrupt controller lock.

Parameters

[in,out]

_lock_context

is the lock context.

Function Documentation

bsp_idle_thread()

void * bsp_idle_thread

(

uintptr_t

ignored

)

Optimized idle task.

This BSP provides its own IDLE thread to override the RTEMS one.

This idle task sets the power mode to idle. This causes the processor clock to be stopped, while on-chip peripherals remain active. Any enabled interrupt from a peripheral or an external interrupt source will cause the processor to resume execution.

To enable the idle task use the following in the system configuration:

#include <bsp.h>
 
#define CONFIGURE_INIT
 
#define CONFIGURE_IDLE_TASK_BODY bsp_idle_thread
 
#include <confdefs.h>

This BSP provides its own IDLE thread to override the RTEMS one.

Optimized idle task.

The MSR[POW] bit is set to put the CPU into the low power mode defined in HID0. HID0 is set during starup in start.S.

This BSP provides its own IDLE thread to override the RTEMS one.

This idle task sets the power mode to idle. This causes the processor clock to be stopped, while on-chip peripherals remain active. Any enabled interrupt from a peripheral or an external interrupt source will cause the processor to resume execution.

To enable the idle task use the following in the system configuration:

#include <bsp.h>
 
#define CONFIGURE_INIT
 
#define CONFIGURE_IDLE_TASK_BODY bsp_idle_thread
 
#include <confdefs.h>

Optimized idle task.

The MSR[POW] bit is set to put the CPU into the low power mode defined in HID0. HID0 is set during starup in start.S.

leon3_ext_irq_init()

void leon3_ext_irq_init

(

irqamp *

regs

)

Initializes the interrupt controller for the boot processor.

Parameters

[in,out]

regs

is the IRQ(A)MP register block address.

set_vector()

rtems_isr_entry set_vector	(	rtems_isr_entry	handler,
		rtems_vector_number	vector,
		int	type
	)

Install an interrupt handler.

This method installs an interrupt handle.

Parameters

[in]	handler	is the isr routine
[in]	vector	is the vector number
[in]	type	indicates whether RTEMS or RAW intr

Returns

returns old vector

Variable Documentation

LEON3_Cpu_Index

uint32_t LEON3_Cpu_Index

extern

This object provides the index of the boot processor.

This object should be read-only after initialization.

LEON3_IrqCtrl_EIrq

uint32_t LEON3_IrqCtrl_EIrq

extern

This object provides the interrupt number used to multiplex extended interrupts or is zero if no extended interrupts are available.

This object should be read-only after initialization.

leon3_timecounter_instance

leon3_timecounter leon3_timecounter_instance

extern

Provides the LEON3-specific timecounter.

It is also used by the CPU counter implementation.

leon3_timer_core_index

int leon3_timer_core_index

extern

This object lets the user override which on-chip GPTIMER core will be used for system clock timer.

This controls which timer core will be accociated with LEON3_Timer_Regs registers base address. This value will by destroyed during initialization.

• 0 = Default configuration. GPTIMER[0]
• 1 = GPTIMER[1]
• 2 = GPTIMER[2]
• ...

leon3_timer_prescaler

unsigned int leon3_timer_prescaler

extern

This object lets the user override system clock timer prescaler.

This affects all timer instances on the system clock timer core determined by leon3_timer_core_index.

• 0 = Default configuration. Use bootloader configured value.
• N = Prescaler is set to N. N must not be less that number of timers.
• 8 = Prescaler is set to 8 (the fastest prescaler possible on all HW)
• ...