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Diffstat (limited to 'include/asm-v850/fpga85e2c.h')
| -rw-r--r-- | include/asm-v850/fpga85e2c.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/include/asm-v850/fpga85e2c.h b/include/asm-v850/fpga85e2c.h new file mode 100644 index 0000000..d32f045 --- /dev/null +++ b/include/asm-v850/fpga85e2c.h @@ -0,0 +1,88 @@ +/* + * 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__ */ |
