1 #ifndef CYGONCE_HAL_VAR_ARCH_H
2 #define CYGONCE_HAL_VAR_ARCH_H
3 //=============================================================================
7 // AT91 variant architecture overrides
9 //=============================================================================
10 //####ECOSGPLCOPYRIGHTBEGIN####
11 // -------------------------------------------
12 // This file is part of eCos, the Embedded Configurable Operating System.
13 // Copyright (C) 2003 Jonathan Larmour <jifl@eCosCentric.com>
15 // eCos is free software; you can redistribute it and/or modify it under
16 // the terms of the GNU General Public License as published by the Free
17 // Software Foundation; either version 2 or (at your option) any later version.
19 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
20 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
21 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
24 // You should have received a copy of the GNU General Public License along
25 // with eCos; if not, write to the Free Software Foundation, Inc.,
26 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
28 // As a special exception, if other files instantiate templates or use macros
29 // or inline functions from this file, or you compile this file and link it
30 // with other works to produce a work based on this file, this file does not
31 // by itself cause the resulting work to be covered by the GNU General Public
32 // License. However the source code for this file must still be made available
33 // in accordance with section (3) of the GNU General Public License.
35 // This exception does not invalidate any other reasons why a work based on
36 // this file might be covered by the GNU General Public License.
38 // Alternative licenses for eCos may be arranged by contacting the copyright
40 // -------------------------------------------
41 //####ECOSGPLCOPYRIGHTEND####
42 //=============================================================================
43 //#####DESCRIPTIONBEGIN####
45 // Author(s): jlarmour
46 // Contributors: Daniel Neri
48 // Purpose: AT91 variant architecture overrides
50 // Usage: #include <cyg/hal/hal_arch.h>
52 //####DESCRIPTIONEND####
54 //=============================================================================
56 #include <pkgconf/hal.h>
57 #include <cyg/hal/hal_io.h>
59 //--------------------------------------------------------------------------
61 // This macro is called in the idle thread loop, and gives the HAL the
62 // chance to insert code. Typical idle thread behaviour might be to halt the
63 // processor. These implementations halt the system core clock.
65 #ifndef HAL_IDLE_THREAD_ACTION
68 #if defined(CYGHWR_HAL_ARM_AT91_R40807) || \
69 defined(CYGHWR_HAL_ARM_AT91_R40008)
71 #define HAL_IDLE_THREAD_ACTION(_count_) \
73 HAL_WRITE_UINT32(AT91_PS+AT91_PS_CR, AT91_PS_CR_CPU); \
76 #elif defined(CYGHWR_HAL_ARM_AT91_M42800A) || \
77 defined(CYGHWR_HAL_ARM_AT91_M55800A)
79 #define HAL_IDLE_THREAD_ACTION(_count_) \
81 HAL_WRITE_UINT32(AT91_PMC+AT91_PMC_SCDR, 1); \
84 #elif defined(CYGHWR_HAL_ARM_AT91_JTST)
85 // No idle action for the JTST
87 #error Unknown AT91 variant
93 //-----------------------------------------------------------------------------
95 #endif // CYGONCE_HAL_VAR_ARCH_H