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#ifndef CYGONCE_HAL_PLATFORM_SETUP_H
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#define CYGONCE_HAL_PLATFORM_SETUP_H
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/*=============================================================================
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//
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// hal_platform_setup.h
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//
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// Platform specific support for HAL (assembly code)
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//
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//=============================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//=============================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): gthomas
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// Contributors: gthomas
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// Date: 1999-04-13
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// Purpose: GPS4020 platform specific support routines
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// Description:
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// Usage: #include <cyg/hal/hal_platform_setup.h>
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//
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//####DESCRIPTIONEND####
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//
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//===========================================================================*/
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#define CYGSEM_HAL_ROM_RESET_USES_JUMP
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.equ MPC_BASE_ADDRESS, 0xE0008000
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.equ MPC_AREA1_CONFIG, 0x00000000
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.equ MPC_AREA2_CONFIG, 0x00000004
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.equ MPC_AREA3_CONFIG, 0x00000008
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.equ MPC_AREA4_CONFIG, 0x0000000C
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.equ GPIO_BASE_ADDRESS, 0xE0005000
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.equ GPIO_DIRECTION_REG_OFFSET,0x00000000
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.equ GPIO_READ_REG_OFFSET, 0x00000004
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.equ GPIO_WRITE_REG_OFFSET, 0x00000008
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.equ SYSTEM_CONFIG, 0xE0002004
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.macro gps4020_setup
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// make GPIO[0..7] outputs - note: GPIO4 is used for Rx on UART1!
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ldr r3,=GPIO_BASE_ADDRESS
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ldr r0, [r3,#GPIO_DIRECTION_REG_OFFSET]
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and r0, r0, #0b00010000 @ 0 = output, 1 = input
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str r0, [r3,#GPIO_DIRECTION_REG_OFFSET]
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mov r0,#0
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str r0,[r3,#GPIO_WRITE_REG_OFFSET]
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ldr r1,=MPC_BASE_ADDRESS
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ldr r2,=0x4400002D // 0x6xxxxxxx, 16bit R/W RAM
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str r2,[r1,#MPC_AREA1_CONFIG]
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ldr r1,=MPC_BASE_ADDRESS
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ldr r2,=0x00000069 // 0x2xxxxxxx, 16bit R/W RAM
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str r2,[r1,#MPC_AREA2_CONFIG]
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ldr r2,[r1,#MPC_AREA3_CONFIG]
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ldr r2,=0x00000021 // 0x4xxxxxxx, 16bit peripheral
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str r2,[r1,#MPC_AREA3_CONFIG]
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ldr r2,[r1,#MPC_AREA4_CONFIG]
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ldr r2,=0x0000006E // 0x0xxxxxxx, 32bit memory
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str r2,[r1,#MPC_AREA4_CONFIG]
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ldr r1,=SYSTEM_CONFIG // Swap memory regions 0x0XXXXXXX, 0x6XXXXXXX
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ldr r2,[r1]
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orr r2,r2,#1
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mov r0,#1
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str r0,[r3,#GPIO_WRITE_REG_OFFSET]
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ldr r4,=10f // Change address space
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str r2,[r1]
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mov pc,r4
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mov pc,r4
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mov pc,r4
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10:
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mov r0,#2
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str r0,[r3,#GPIO_WRITE_REG_OFFSET]
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.endm
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#ifdef CYG_HAL_STARTUP_ROM
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#define PLATFORM_SETUP1 gps4020_setup
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#else
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#define PLATFORM_SETUP1
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#endif
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/*---------------------------------------------------------------------------*/
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/* end of hal_platform_setup.h */
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#endif /* CYGONCE_HAL_PLATFORM_SETUP_H */
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