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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [hal/] [arm/] [at91/] [v2_0/] [include/] [hal_platform_setup.h] - Rev 27
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#ifndef CYGONCE_HAL_PLATFORM_SETUP_H #define CYGONCE_HAL_PLATFORM_SETUP_H /*============================================================================= // // hal_platform_setup.h // // Platform specific support for HAL (assembly code) // //============================================================================= //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation; either version 2 or (at your option) any later version. // // eCos is distributed in the hope that it will be useful, but WITHOUT ANY // WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //============================================================================= //#####DESCRIPTIONBEGIN#### // // Author(s): gthomas // Contributors:gthomas // Date: 2001-07-12 // Purpose: AT91/EB40 platform specific support routines // Description: // Usage: #include <cyg/hal/hal_platform_setup.h> // //####DESCRIPTIONEND#### // //===========================================================================*/ #include <cyg/hal/plf_io.h> #if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM) .macro _setup ldr r10,=_InitMemory // Initialize memory controller movs r0,pc,lsr #20 // If ROM startup, PC < 0x100000 moveq r10,r10,lsl #12 // mask address to low 20 bits moveq r10,r10,lsr #12 ldmia r10!,{r0-r9,r11-r12} // Table of initialization constants #if defined(CYG_HAL_STARTUP_ROMRAM) ldr r10,=0x0000FFFF and r12,r12,r10 ldr r10,=0x01010000 orr r12,r12,r10 #endif stmia r11!,{r0-r9} // Write to controller mov pc,r12 // Change address space, break pipeline _InitMemory: .long 0x01002535 // 0x01000000, 16MB, 2 cycles added after transfer, 16-bit, 6 wait states .long 0x02002121 // 0x02000000, 16MB, 0 cycles added after transfer, 16-bit, 1 wait state .long 0x20000000 // unused .long 0x30000000 // unused .long 0x40000000 // unused .long 0x50000000 // unused .long 0x60000000 // unused .long 0x70000000 // unused .long 0x00000001 // REMAP commande .long 0x00000006 // 7 memory regions, standard read .long AT91_EBI // External Bus Interface address .long 10f // address where to jump 10: #if defined(CYG_HAL_STARTUP_ROMRAM) ldr r0,=0x01010000 // Relocate FLASH/ROM to on-chip RAM ldr r1,=0x02000000 // RAM base & length ldr r2,=0x02010000 20: ldr r3,[r0],#4 str r3,[r1],#4 cmp r1,r2 bne 20b ldr r0,=30f mov pc,r0 30: #endif ldr r0,=AT91_PS // Power saving interface ldr r1,=0xFFFFFFFF // Enable all peripheral [clocks] str r1,[r0,#AT91_PS_PCER] ldr r0,=AT91_PIO // Disable PIO (so peripherals can use bits) ldr r1,=0x0070FE49 // UART, FIQ, EINT, Timer clocks str r1,[r0,#AT91_PIO_PDR] ldr r1,=0x000001B6 // LEDs str r1,[r0,#AT91_PIO_OER] str r1,[r0,#AT91_PIO_SODR] .endm #define CYGSEM_HAL_ROM_RESET_USES_JUMP #define PLATFORM_SETUP1 _setup #else #define PLATFORM_SETUP1 #endif //----------------------------------------------------------------------------- // end of hal_platform_setup.h #endif // CYGONCE_HAL_PLATFORM_SETUP_H
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