RISC-V common

Common implementations and headers for the RISC-V CPU. More...

Detailed Description

Common implementations and headers for the RISC-V CPU.

Files
file	clic.h
	RISCV CLIC interrupt controller definitions.
file	context_frame.h
	Thread context frame stored on stack.
file	cpu_common.h
	Basic definitions for the RISC-V CPU module.
file	cpu_conf_common.h
	RISC-V CPU configuration options.
file	cpucycle.h
	Functions to read CPU cycle counter.
file	irq_arch.h
	Implementation of the kernels irq interface.
file	periph_cpu_common.h
	CPU specific definitions for internal peripheral handling.
file	plic.h
	Platform-Level interrupt controller driver.
file	pmp.h
	RISC-V PMP configuration options.

Functions
void	riscv_init (void)
	Initialize rv32i specific core parts of the CPU.
void	riscv_fpu_init (void)
	Enable the rv32i FPU when present.
void	riscv_irq_init (void)
	Initialization of the interrupt controller.
static uintptr_t	cpu_get_caller_pc (void)
	Gets the last instruction's address.
static void	cpu_reg_enable_bits (volatile uint32_t *reg, uint32_t mask)
	Convenience function to set bit flags in a register.
static void	cpu_reg_disable_bits (volatile uint32_t *reg, uint32_t mask)
	Convenience function to clear bit flags in a register.

Macro Definition Documentation

CPU_COMMON_H

#define CPU_COMMON_H

Definition at line 26 of file cpu_common.h.

Function Documentation

cpu_get_caller_pc()

static uintptr_t cpu_get_caller_pc ( void  )

inlinestatic

Gets the last instruction's address.

Todo:

: Not supported

Definition at line 54 of file cpu_common.h.

cpu_reg_disable_bits()

static void cpu_reg_disable_bits ( volatile uint32_t *  reg, uint32_t  mask  )

inlinestatic

Convenience function to clear bit flags in a register.

Parameters

reg	register to clear bits in
mask	bits to clear in the register

Definition at line 79 of file cpu_common.h.

cpu_reg_enable_bits()

static void cpu_reg_enable_bits ( volatile uint32_t *  reg, uint32_t  mask  )

inlinestatic

Convenience function to set bit flags in a register.

Parameters

reg	register to set bits in
mask	bits to set in the register

Definition at line 67 of file cpu_common.h.

riscv_init()

void riscv_init

(

void

)

Initialize rv32i specific core parts of the CPU.

Initialized the interrupt controller and the enables the FPU if present