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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 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: 2001-07-12
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// Purpose: AT91/EB40 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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#include <cyg/hal/var_io.h>
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#if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM)
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.macro _setup
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ldr r10,=_InitMemory // Initialize memory controller
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movs r0,pc,lsr #20 // If ROM startup, PC < 0x100000
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moveq r10,r10,lsl #12 // mask address to low 20 bits
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moveq r10,r10,lsr #12
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ldmia r10!,{r0-r9,r11-r12} // Table of initialization constants
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#if defined(CYG_HAL_STARTUP_ROMRAM)
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ldr r10,=0x0000FFFF
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and r12,r12,r10
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ldr r10,=0x01010000
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orr r12,r12,r10
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#endif
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stmia r11!,{r0-r9} // Write to controller
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mov pc,r12 // Change address space, break pipeline
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_InitMemory:
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.long 0x01002535 // 0x01000000, 16MB, 2 cycles after transfer, 16-bit, 6 wait states
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.long 0x02002121 // 0x02000000, 16MB, 0 cycles after transfer, 16-bit, 1 wait state
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.long 0x20000000 // unused
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.long 0x30000000 // unused
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.long 0x40000000 // unused
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.long 0x50000000 // unused
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.long 0x60000000 // unused
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.long 0x70000000 // unused
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.long 0x00000001 // REMAP command
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.long 0x00000006 // 7 memory regions, standard read
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.long AT91_EBI // External Bus Interface address
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.long 10f // address where to jump
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10:
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#if defined(CYG_HAL_STARTUP_ROMRAM)
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ldr r0,=0x01010000 // Relocate FLASH/ROM to on-chip RAM
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ldr r1,=0x02000000 // RAM base & length
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ldr r2,=0x02010000
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20: ldr r3,[r0],#4
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str r3,[r1],#4
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cmp r1,r2
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bne 20b
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ldr r0,=30f
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mov pc,r0
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30:
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#endif
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ldr r0,=AT91_PS // Power saving interface
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ldr r1,=0xFFFFFFFF // Enable all peripheral [clocks]
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str r1,[r0,#AT91_PS_PCER]
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ldr r0,=AT91_PIO // Disable PIO (so peripherals can use bits)
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ldr r1,=0x0070FE49 // UART, FIQ, EINT, Timer clocks
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str r1,[r0,#AT91_PIO_PDR]
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ldr r1,=0x000001B6 // LEDs
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str r1,[r0,#AT91_PIO_OER]
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str r1,[r0,#AT91_PIO_SODR]
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.endm
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#define CYGSEM_HAL_ROM_RESET_USES_JUMP
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#define PLATFORM_SETUP1 _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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