1 #ifndef CYGONCE_HAL_PLATFORM_SETUP_H
2 #define CYGONCE_HAL_PLATFORM_SETUP_H
4 /*=============================================================================
6 // hal_platform_setup.h
8 // Platform specific support for HAL (assembly code)
10 //=============================================================================
11 //####ECOSGPLCOPYRIGHTBEGIN####
12 // -------------------------------------------
13 // This file is part of eCos, the Embedded Configurable Operating System.
14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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30 // or inline functions from this file, or you compile this file and link it
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40 // at http://sources.redhat.com/ecos/ecos-license/
41 // -------------------------------------------
42 //####ECOSGPLCOPYRIGHTEND####
43 //=============================================================================
44 //#####DESCRIPTIONBEGIN####
47 // Contributors:gthomas
49 // Purpose: AT91/EB40 platform specific support routines
51 // Usage: #include <cyg/hal/hal_platform_setup.h>
53 //####DESCRIPTIONEND####
55 //===========================================================================*/
57 #include <cyg/hal/plf_io.h>
59 #if defined(CYG_HAL_STARTUP_ROM) || defined(CYG_HAL_STARTUP_ROMRAM)
62 ldr r10,=_InitMemory // Initialize memory controller
63 movs r0,pc,lsr #20 // If ROM startup, PC < 0x100000
64 moveq r10,r10,lsl #12 // mask address to low 20 bits
66 ldmia r10!,{r0-r9,r11-r12} // Table of initialization constants
67 #if defined(CYG_HAL_STARTUP_ROMRAM)
73 stmia r11!,{r0-r9} // Write to controller
74 mov pc,r12 // Change address space, break pipeline
76 .long 0x01002535 // 0x01000000, 16MB, 2 cycles added after transfer, 16-bit, 6 wait states
77 .long 0x02002121 // 0x02000000, 16MB, 0 cycles added after transfer, 16-bit, 1 wait state
78 .long 0x20000000 // unused
79 .long 0x30000000 // unused
80 .long 0x40000000 // unused
81 .long 0x50000000 // unused
82 .long 0x60000000 // unused
83 .long 0x70000000 // unused
84 .long 0x00000001 // REMAP commande
85 .long 0x00000006 // 7 memory regions, standard read
86 .long AT91_EBI // External Bus Interface address
87 .long 10f // address where to jump
90 #if defined(CYG_HAL_STARTUP_ROMRAM)
91 ldr r0,=0x01010000 // Relocate FLASH/ROM to on-chip RAM
92 ldr r1,=0x02000000 // RAM base & length
103 ldr r0,=AT91_PS // Power saving interface
104 ldr r1,=0xFFFFFFFF // Enable all peripheral [clocks]
105 str r1,[r0,#AT91_PS_PCER]
106 ldr r0,=AT91_PIO // Disable PIO (so peripherals can use bits)
107 ldr r1,=0x0070FE49 // UART, FIQ, EINT, Timer clocks
108 str r1,[r0,#AT91_PIO_PDR]
109 ldr r1,=0x000001B6 // LEDs
110 str r1,[r0,#AT91_PIO_OER]
111 str r1,[r0,#AT91_PIO_SODR]
114 #define CYGSEM_HAL_ROM_RESET_USES_JUMP
115 #define PLATFORM_SETUP1 _setup
117 #define PLATFORM_SETUP1
120 //-----------------------------------------------------------------------------
121 // end of hal_platform_setup.h
122 #endif // CYGONCE_HAL_PLATFORM_SETUP_H