4.104.114.95
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1 | /* |
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2 | * cp.c |
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3 | * |
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4 | * MPC8xx CPM RISC Communication Processor routines. |
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5 | * |
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6 | * Based on code (alloc860.c in eth_comm port) by |
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7 | * Jay Monkman (jmonkman@frasca.com), |
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8 | * which, in turn, is based on code by |
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9 | * W. Eric Norum (eric@skatter.usask.ca). |
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10 | * |
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11 | * Modifications by Darlene Stewart (Darlene.Stewart@iit.nrc.ca): |
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12 | * Copyright (c) 1999, National Research Council of Canada |
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13 | */ |
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14 | |
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15 | #include <rtems.h> |
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16 | #include <mpc8xx.h> |
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17 | #include <mpc8xx/cpm.h> |
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18 | |
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19 | /* |
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20 | * Send a command to the CPM RISC processer |
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21 | */ |
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22 | |
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23 | void m8xx_cp_execute_cmd( uint16_t command ) |
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24 | { |
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25 | uint16_t lvl; |
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26 | |
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27 | rtems_interrupt_disable(lvl); |
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28 | while (m8xx.cpcr & M8xx_CR_FLG) { |
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29 | continue; |
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30 | } |
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31 | |
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32 | m8xx.cpcr = command | M8xx_CR_FLG; |
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33 | rtems_interrupt_enable (lvl); |
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34 | } |
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