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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: amichelotti
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// Date: 2004-06-4
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// Purpose: JTST 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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#include <cyg/hal/hal_misc.h>
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.macro __pio_clkgen_init
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ldr r0,=AT91_PIO
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ldr r1,=BIT21|BIT22|BIT23|BIT24|BIT25|BIT26|BIT27
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str r1,[r0,#AT91_PIO_SODR] // set this bit must be always 1,
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// otherwise resets
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ldr r1,=BIT21|BIT22|BIT23|BIT24|BIT25|BIT26|BIT27
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str r1,[r0,#AT91_PIO_OER] // set to output
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str r1,[r0,#AT91_PIO_PER] // software control
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ldr r1,=BIT21|BIT22|BIT23|BIT24|BIT25|BIT26|BIT27
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str r1,[r0,#AT91_PIO_CODR] // leds all on
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ldr r1,=BIT30|BIT3
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ldr r1,[r0,#AT91_PIO_PDR] // (BIT30) usb interrupt line in
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// (BIT3) active watchdog reset line
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ldr r0,=AT91_CLKGEN
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ldr r1,=32
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str r1,[r0,#AT91_CLKGEN_CPTMAX0]
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str r1,[r0,#AT91_CLKGEN_CPTMAX1]
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ldr r1,=128
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str r1,[r0,#AT91_CLKGEN_CPTMAX2] //watch dog divider1
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ldr r1,=1024
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str r1,[r0,#AT91_CLKGEN_CPTMAX3] //watch dog divider2
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ldr r1,=2046
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str r1,[r0,#AT91_CLKGEN_CPTMAX4] //watch dog divider3 (max accepted value)
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ldr r1,=1
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str r1,[r0,#AT91_CLKGEN_CLKENABLE]
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#if defined(CYG_HAL_STARTUP_RAM)
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// set internal ram as interrupt stack and other
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ldr r0, =0x7ffc
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ldr r1,=__startup_stack
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ldr r2,=__startup_stack_base
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sub r3,r1,r2
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ldr r1,=.__startup_stack
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str r0,[r1]
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sub r0,r0,r3
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#ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
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ldr r1,=__interrupt_stack
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ldr r2,=__interrupt_stack_base
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sub r3,r1,r2
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ldr r1,=.__interrupt_stack
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str r0,[r1]
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#endif
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#endif
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.endm
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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,=0x00510000
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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 0x00502031 // FLASH
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.long 0x00602021 // RAM
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.long 0x00702021 // unused
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.long 0x00802021 // unused
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.long 0x00902021 // unused
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.long 0x00A02021 // unused
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.long 0x00b02021 // unused
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.long 0x00c02021 // unused
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.long 0x00000001 // REMAP commande
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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,=0x00510000 // Relocate FLASH/ROM to on-chip RAM
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ldr r1,=0x00600000 // RAM base & length
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ldr r2,=0x00610000
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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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__pio_clkgen_init
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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 __pio_clkgen_init
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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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