1 /* 2 * arch/xtensa/platform/xtavnet/include/platform/hardware.h 3 * 4 * This file is subject to the terms and conditions of the GNU General Public 5 * License. See the file "COPYING" in the main directory of this archive 6 * for more details. 7 * 8 * Copyright (C) 2006 Tensilica Inc. 9 */ 10 11 /* 12 * This file contains the hardware configuration of the XTAVNET boards. 13 */ 14 15 #ifndef __XTENSA_XTAVNET_HARDWARE_H 16 #define __XTENSA_XTAVNET_HARDWARE_H 17 18 /* By default NO_IRQ is defined to 0 in Linux, but we use the 19 interrupt 0 for UART... */ 20 #define NO_IRQ -1 21 22 /* Memory configuration. */ 23 24 #define PLATFORM_DEFAULT_MEM_START 0x00000000 25 #define PLATFORM_DEFAULT_MEM_SIZE 0x04000000 26 27 /* Interrupt configuration. */ 28 29 #define PLATFORM_NR_IRQS 10 30 31 /* Default assignment of LX60 devices to external interrupts. */ 32 33 #ifdef CONFIG_ARCH_HAS_SMP 34 #define DUART16552_INTNUM XCHAL_EXTINT3_NUM 35 #define OETH_IRQ XCHAL_EXTINT4_NUM 36 #else 37 #define DUART16552_INTNUM XCHAL_EXTINT0_NUM 38 #define OETH_IRQ XCHAL_EXTINT1_NUM 39 #endif 40 41 /* 42 * Device addresses and parameters. 43 */ 44 45 /* UART */ 46 #define DUART16552_PADDR (XCHAL_KIO_PADDR + 0x0D050020) 47 /* LCD instruction and data addresses. */ 48 #define LCD_INSTR_ADDR ((char *)IOADDR(0x0D040000)) 49 #define LCD_DATA_ADDR ((char *)IOADDR(0x0D040004)) 50 51 /* Misc. */ 52 #define XTFPGA_FPGAREGS_VADDR IOADDR(0x0D020000) 53 /* Clock frequency in Hz (read-only): */ 54 #define XTFPGA_CLKFRQ_VADDR (XTFPGA_FPGAREGS_VADDR + 0x04) 55 /* Setting of 8 DIP switches: */ 56 #define DIP_SWITCHES_VADDR (XTFPGA_FPGAREGS_VADDR + 0x0C) 57 /* Software reset (write 0xdead): */ 58 #define XTFPGA_SWRST_VADDR (XTFPGA_FPGAREGS_VADDR + 0x10) 59 60 /* OpenCores Ethernet controller: */ 61 /* regs + RX/TX descriptors */ 62 #define OETH_REGS_PADDR (XCHAL_KIO_PADDR + 0x0D030000) 63 #define OETH_REGS_SIZE 0x1000 64 #define OETH_SRAMBUFF_PADDR (XCHAL_KIO_PADDR + 0x0D800000) 65 66 /* 5*rx buffs + 5*tx buffs */ 67 #define OETH_SRAMBUFF_SIZE (5 * 0x600 + 5 * 0x600) 68 69 #endif /* __XTENSA_XTAVNET_HARDWARE_H */ 70