arch/xtensa/platforms/xtfpga/include/platform/hardware.h

Source file repositories/reference/linux-study-clean/arch/xtensa/platforms/xtfpga/include/platform/hardware.h

File Facts

System
Linux kernel
Corpus path
arch/xtensa/platforms/xtfpga/include/platform/hardware.h
Extension
.h
Size
1693 bytes
Lines
61
Domain
Architecture Layer
Bucket
arch/xtensa
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <asm/types.h>

#ifndef __XTENSA_XTAVNET_HARDWARE_H
#define __XTENSA_XTAVNET_HARDWARE_H

/* Default assignment of LX60 devices to external interrupts. */

#ifdef CONFIG_XTENSA_MX
#define DUART16552_INTNUM	XCHAL_EXTINT3_NUM
#define OETH_IRQ		XCHAL_EXTINT4_NUM
#define C67X00_IRQ		XCHAL_EXTINT8_NUM
#else
#define DUART16552_INTNUM	XCHAL_EXTINT0_NUM
#define OETH_IRQ		XCHAL_EXTINT1_NUM
#define C67X00_IRQ		XCHAL_EXTINT5_NUM
#endif

/*
 *  Device addresses and parameters.
 */

/* UART */
#define DUART16552_PADDR	(XCHAL_KIO_PADDR + 0x0D050020)

/* Misc. */
#define XTFPGA_FPGAREGS_VADDR	IOADDR(0x0D020000)
/* Clock frequency in Hz (read-only):  */
#define XTFPGA_CLKFRQ_VADDR	(XTFPGA_FPGAREGS_VADDR + 0x04)
/* Setting of 8 DIP switches:  */
#define DIP_SWITCHES_VADDR	(XTFPGA_FPGAREGS_VADDR + 0x0C)
/* Software reset (write 0xdead):  */
#define XTFPGA_SWRST_VADDR	(XTFPGA_FPGAREGS_VADDR + 0x10)

/*  OpenCores Ethernet controller:  */
				/* regs + RX/TX descriptors */
#define OETH_REGS_PADDR		(XCHAL_KIO_PADDR + 0x0D030000)
#define OETH_REGS_SIZE		0x1000
#define OETH_SRAMBUFF_PADDR	(XCHAL_KIO_PADDR + 0x0D800000)

				/* 5*rx buffs + 5*tx buffs */
#define OETH_SRAMBUFF_SIZE	(5 * 0x600 + 5 * 0x600)

#define C67X00_PADDR		(XCHAL_KIO_PADDR + 0x0D0D0000)
#define C67X00_SIZE		0x10

#endif /* __XTENSA_XTAVNET_HARDWARE_H */

Annotation

Implementation Notes