1 | /* |
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2 | * Instantiate the clock driver shell for the Mongoose-V's on-CPU timer. |
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3 | * |
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4 | * COPYRIGHT (c) 1989-2001. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in found in the file LICENSE in this distribution or at |
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9 | * http://www.rtems.com/license/LICENSE. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #include <rtems.h> |
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15 | #include <libcpu/mongoose-v.h> |
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16 | #include <bsp.h> |
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17 | |
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18 | #if defined(USE_TIMER2_FOR_CLOCK) |
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19 | #define CLOCK_BASE MONGOOSEV_TIMER2_BASE |
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20 | #define CLOCK_VECTOR MONGOOSEV_IRQ_TIMER2 |
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21 | #else |
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22 | #define CLOCK_BASE MONGOOSEV_TIMER1_BASE |
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23 | #define CLOCK_VECTOR MONGOOSEV_IRQ_TIMER1 |
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24 | #endif |
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25 | |
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26 | /* reset Timeout (TO) bit */ |
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27 | |
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28 | #define Clock_driver_support_at_tick() \ |
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29 | do { \ |
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30 | MONGOOSEV_WRITE_REGISTER( CLOCK_BASE, MONGOOSEV_TIMER_CONTROL_REGISTER, \ |
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31 | (MONGOOSEV_TIMER_CONTROL_COUNTER_ENABLE | MONGOOSEV_TIMER_CONTROL_INTERRUPT_ENABLE)); \ |
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32 | } while(0) |
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33 | |
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34 | #define Clock_driver_support_install_isr( _new, _old ) \ |
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35 | do { \ |
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36 | _old = set_vector( _new, CLOCK_VECTOR, 1 ); \ |
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37 | } while(0) |
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38 | |
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39 | #define Clock_driver_support_initialize_hardware() \ |
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40 | do { \ |
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41 | uint32_t _clicks = CPU_CLOCK_RATE_MHZ * rtems_configuration_get_microseconds_per_tick(); \ |
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42 | MONGOOSEV_WRITE_REGISTER( CLOCK_BASE, MONGOOSEV_TIMER_INITIAL_COUNTER_REGISTER, _clicks ); \ |
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43 | Clock_driver_support_at_tick(); \ |
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44 | } while(0) |
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45 | |
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46 | #define Clock_driver_support_shutdown_hardware() \ |
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47 | MONGOOSEV_WRITE_REGISTER( CLOCK_BASE, MONGOOSEV_TIMER_CONTROL_REGISTER, 0 ) |
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48 | |
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49 | #include "../../../shared/clockdrv_shell.c" |
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