89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
|
/*
|
||
|
|
* include/asm-v850/fpga85e2c.h -- Machine-dependent defs for
|
||
|
|
* FPGA implementation of V850E2/NA85E2C
|
||
|
|
*
|
||
|
|
* Copyright (C) 2002,03 NEC Electronics Corporation
|
||
|
|
* Copyright (C) 2002,03 Miles Bader <miles@gnu.org>
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General
|
||
|
|
* Public License. See the file COPYING in the main directory of this
|
||
|
|
* archive for more details.
|
||
|
|
*
|
||
|
|
* Written by Miles Bader <miles@gnu.org>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __V850_FPGA85E2C_H__
|
||
|
|
#define __V850_FPGA85E2C_H__
|
||
|
|
|
||
|
|
#include <asm/v850e2.h>
|
||
|
|
#include <asm/clinkage.h>
|
||
|
|
|
||
|
|
|
||
|
|
#define CPU_MODEL "v850e2/fpga85e2c"
|
||
|
|
#define CPU_MODEL_LONG "NEC V850E2/NA85E2C"
|
||
|
|
#define PLATFORM "fpga85e2c"
|
||
|
|
#define PLATFORM_LONG "NA85E2C FPGA implementation"
|
||
|
|
|
||
|
|
|
||
|
|
/* `external ram'. */
|
||
|
|
#define ERAM_ADDR 0
|
||
|
|
#define ERAM_SIZE 0x00100000 /* 1MB */
|
||
|
|
|
||
|
|
|
||
|
|
/* FPGA specific control registers. */
|
||
|
|
|
||
|
|
/* Writing a non-zero value to FLGREG(0) will signal the controlling CPU
|
||
|
|
to stop execution. */
|
||
|
|
#define FLGREG_ADDR(n) (0xFFE80100 + 2*(n))
|
||
|
|
#define FLGREG(n) (*(volatile unsigned char *)FLGREG_ADDR (n))
|
||
|
|
#define FLGREG_NUM 2
|
||
|
|
|
||
|
|
#define CSDEV_ADDR(n) (0xFFE80110 + 2*(n))
|
||
|
|
#define CSDEV(n) (*(volatile unsigned char *)CSDEV_ADDR (n))
|
||
|
|
|
||
|
|
|
||
|
|
/* Timer interrupts 0-3, interrupt at intervals from CLK/4096 to CLK/16384. */
|
||
|
|
#define IRQ_RPU(n) (60 + (n))
|
||
|
|
#define IRQ_RPU_NUM 4
|
||
|
|
|
||
|
|
/* For <asm/irq.h> */
|
||
|
|
#define NUM_CPU_IRQS 64
|
||
|
|
|
||
|
|
|
||
|
|
/* General-purpose timer. */
|
||
|
|
/* control/status register (can only be read/written via bit insns) */
|
||
|
|
#define RPU_GTMC_ADDR 0xFFFFFB00
|
||
|
|
#define RPU_GTMC (*(volatile unsigned char *)RPU_GTMC_ADDR)
|
||
|
|
#define RPU_GTMC_CE_BIT 7 /* clock enable (control) */
|
||
|
|
#define RPU_GTMC_OV_BIT 6 /* overflow (status) */
|
||
|
|
#define RPU_GTMC_CLK_BIT 1 /* 0 = .5 MHz CLK, 1 = 1 Mhz (control) */
|
||
|
|
/* 32-bit count (8 least-significant bits are always zero). */
|
||
|
|
#define RPU_GTM_ADDR 0xFFFFFB28
|
||
|
|
#define RPU_GTM (*(volatile unsigned long *)RPU_GTMC_ADDR)
|
||
|
|
|
||
|
|
|
||
|
|
/* For <asm/page.h> */
|
||
|
|
#define PAGE_OFFSET ERAM_ADDR /* minimum allocatable address */
|
||
|
|
|
||
|
|
|
||
|
|
/* For <asm/entry.h> */
|
||
|
|
/* `R0 RAM', used for a few miscellaneous variables that must be accessible
|
||
|
|
using a load instruction relative to R0. The FPGA implementation
|
||
|
|
actually has no on-chip RAM, so we use part of main ram just after the
|
||
|
|
interrupt vectors. */
|
||
|
|
#ifdef __ASSEMBLY__
|
||
|
|
#define R0_RAM_ADDR lo(C_SYMBOL_NAME(_r0_ram))
|
||
|
|
#else
|
||
|
|
extern char _r0_ram;
|
||
|
|
#define R0_RAM_ADDR ((unsigned long)&_r0_ram);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
/* For <asm/param.h> */
|
||
|
|
#ifndef HZ
|
||
|
|
#define HZ 122 /* actually, 8.192ms ticks =~ 122.07 */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* __V850_FPGA85E2C_H__ */
|