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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, 2008 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): Uwe Kindler
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// Contributors: Uwe Kindler
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// Date: 2008-06-05
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// Purpose: EA LPC2468 OEM 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 <pkgconf/system.h>
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#include <cyg/hal/var_io.h>
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//
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// The minimum initialisation code - we simply setup a valid C stack in
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// internal SRAM and do any further initialisation in C code
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//
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#if defined(CYG_HAL_STARTUP_ROM)
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.macro _setup
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//
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// While setting the stack pointer please note that the
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// Flash programming routines use a
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// section of the on-chip SRAM. In-System Programming (ISP) uses
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// the top 256 bytes and In-Application Programming (IAP) uses the
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// top 128 bytes of the on-chip SRAM. The application stack should
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// not overlap this area.
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//
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ldr r2,=0x4000ffff // ram end
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sub sp,r2,#0xff
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//
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// now map the vector table to internal flash - normally this should be
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// the default value after boot - but we go the save way here and force
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// the mapping to internal flash (the value for
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// CYGARC_HAL_LPC24XX_REG_MEMMAP is 1)
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//
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ldr r0,=CYGARC_HAL_LPC24XX_REG_SCB_BASE
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mov r1,#1
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str r1, [r0,#CYGARC_HAL_LPC24XX_REG_MEMMAP]
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//
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// Now its is save to copy the first 64 bytes of flash to RAM
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//
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mov r0,#0
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mov r1,#0x40000000
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mov r2,#0x40
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1:
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ldr r3,[r0,#4]!
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str r3,[r1,#4]!
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cmps r0,r2
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bne 1b
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//
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// Now we can map the vector table to internal SRAM because the SRAM no
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// contains a copy of the vector table from flash (the value for
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// CYGARC_HAL_LPC24XX_REG_MEMMAP is 2 = SRAM)
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//
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ldr r0,=CYGARC_HAL_LPC24XX_REG_SCB_BASE
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mov r1,#2 // User RAM Mode. Interrupt
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// vectors are re-mapped to Static RAM.
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str r1, [r0,#CYGARC_HAL_LPC24XX_REG_MEMMAP]
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//
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// now we have a valid stack and we can jump into the beautiful
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// world of C and do any further initialisation in C code
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//
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bl hal_plf_startup
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.endm
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#define CYGSEM_HAL_ROM_RESET_USES_JUMP
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#else
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.macro _setup
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.endm
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#endif
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#define PLATFORM_SETUP1 _setup
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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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