| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-v850/fpga85e2c.h -- Machine-dependent defs for |
| 3 | * FPGA implementation of V850E2/NA85E2C |
| 4 | * |
| 5 | * Copyright (C) 2002,03 NEC Electronics Corporation |
| 6 | * Copyright (C) 2002,03 Miles Bader <miles@gnu.org> |
| 7 | * |
| 8 | * This file is subject to the terms and conditions of the GNU General |
| 9 | * Public License. See the file COPYING in the main directory of this |
| 10 | * archive for more details. |
| 11 | * |
| 12 | * Written by Miles Bader <miles@gnu.org> |
| 13 | */ |
| 14 | |
| 15 | #ifndef __V850_FPGA85E2C_H__ |
| 16 | #define __V850_FPGA85E2C_H__ |
| 17 | |
| 18 | #include <asm/v850e2.h> |
| 19 | #include <asm/clinkage.h> |
| 20 | |
| 21 | |
| 22 | #define CPU_MODEL "v850e2/fpga85e2c" |
| 23 | #define CPU_MODEL_LONG "NEC V850E2/NA85E2C" |
| 24 | #define PLATFORM "fpga85e2c" |
| 25 | #define PLATFORM_LONG "NA85E2C FPGA implementation" |
| 26 | |
| 27 | |
| 28 | /* `external ram'. */ |
| 29 | #define ERAM_ADDR 0 |
| 30 | #define ERAM_SIZE 0x00100000 /* 1MB */ |
| 31 | |
| 32 | |
| 33 | /* FPGA specific control registers. */ |
| 34 | |
| 35 | /* Writing a non-zero value to FLGREG(0) will signal the controlling CPU |
| 36 | to stop execution. */ |
| 37 | #define FLGREG_ADDR(n) (0xFFE80100 + 2*(n)) |
| 38 | #define FLGREG(n) (*(volatile unsigned char *)FLGREG_ADDR (n)) |
| 39 | #define FLGREG_NUM 2 |
| 40 | |
| 41 | #define CSDEV_ADDR(n) (0xFFE80110 + 2*(n)) |
| 42 | #define CSDEV(n) (*(volatile unsigned char *)CSDEV_ADDR (n)) |
| 43 | |
| 44 | |
| 45 | /* Timer interrupts 0-3, interrupt at intervals from CLK/4096 to CLK/16384. */ |
| 46 | #define IRQ_RPU(n) (60 + (n)) |
| 47 | #define IRQ_RPU_NUM 4 |
| 48 | |
| 49 | /* For <asm/irq.h> */ |
| 50 | #define NUM_CPU_IRQS 64 |
| 51 | |
| 52 | |
| 53 | /* General-purpose timer. */ |
| 54 | /* control/status register (can only be read/written via bit insns) */ |
| 55 | #define RPU_GTMC_ADDR 0xFFFFFB00 |
| 56 | #define RPU_GTMC (*(volatile unsigned char *)RPU_GTMC_ADDR) |
| 57 | #define RPU_GTMC_CE_BIT 7 /* clock enable (control) */ |
| 58 | #define RPU_GTMC_OV_BIT 6 /* overflow (status) */ |
| 59 | #define RPU_GTMC_CLK_BIT 1 /* 0 = .5 MHz CLK, 1 = 1 Mhz (control) */ |
| 60 | /* 32-bit count (8 least-significant bits are always zero). */ |
| 61 | #define RPU_GTM_ADDR 0xFFFFFB28 |
| 62 | #define RPU_GTM (*(volatile unsigned long *)RPU_GTMC_ADDR) |
| 63 | |
| 64 | |
| 65 | /* For <asm/page.h> */ |
| 66 | #define PAGE_OFFSET ERAM_ADDR /* minimum allocatable address */ |
| 67 | |
| 68 | |
| 69 | /* For <asm/entry.h> */ |
| 70 | /* `R0 RAM', used for a few miscellaneous variables that must be accessible |
| 71 | using a load instruction relative to R0. The FPGA implementation |
| 72 | actually has no on-chip RAM, so we use part of main ram just after the |
| 73 | interrupt vectors. */ |
| 74 | #ifdef __ASSEMBLY__ |
| 75 | #define R0_RAM_ADDR lo(C_SYMBOL_NAME(_r0_ram)) |
| 76 | #else |
| 77 | extern char _r0_ram; |
| 78 | #define R0_RAM_ADDR ((unsigned long)&_r0_ram); |
| 79 | #endif |
| 80 | |
| 81 | |
| 82 | /* For <asm/param.h> */ |
| 83 | #ifndef HZ |
| 84 | #define HZ 122 /* actually, 8.192ms ticks =~ 122.07 */ |
| 85 | #endif |
| 86 | |
| 87 | |
| 88 | #endif /* __V850_FPGA85E2C_H__ */ |