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1 jermar 1 
/*
2071 jermar 2 
 * Copyright (c) 2001-2004 Jakub Jermar
1 jermar 3 
 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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1757 jermar 29 
/** @addtogroup generic
1702 cejka 30 
 * @{
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 */
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1264 jermar 33 
/**
1702 cejka 34 
 * @file
1264 jermar 35 
 * @brief   Miscellaneous functions.
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 */
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1 jermar 38 
#include <func.h>
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#include <print.h>
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#include <cpu.h>
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#include <arch/asm.h>
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#include <arch.h>
607 palkovsky 43 
#include <console/kconsole.h>
1 jermar 44 
 
631 palkovsky 45 
atomic_t haltstate = {0}; /**< Halt flag */
1 jermar 46 
 
62 decky 47 
 
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/** Halt wrapper
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 *
4088 decky 50 
 * Set halt flag and halt the CPU.
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 *
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 */
631 palkovsky 53 
void halt()
1 jermar 54 
{
631 palkovsky 55 
#ifdef CONFIG_DEBUG
659 jermar 56 
    bool rundebugger = false;
4088 decky 57 
 
631 palkovsky 58 
    if (!atomic_get(&haltstate)) {
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        atomic_set(&haltstate, 1);
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        rundebugger = true;
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    }
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#else
1100 palkovsky 63 
    atomic_set(&haltstate, 1);
631 palkovsky 64 
#endif
4088 decky 65 
 
413 jermar 66 
    interrupts_disable();
3707 decky 67 
 
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#if (defined(CONFIG_DEBUG)) && (defined(CONFIG_KCONSOLE))
4088 decky 69 
    if ((rundebugger) && (kconsole_check_poll()))
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        kconsole("panic", "\nLast resort kernel console ready.\n", false);
3707 decky 71 
#endif
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227 jermar 73 
    if (CPU)
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        printf("cpu%u: halted\n", CPU->id);
227 jermar 75 
    else
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        printf("cpu: halted\n");
4088 decky 77 
 
1 jermar 78 
    cpu_halt();
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}
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1780 jermar 81 
/** Convert ascii representation to unative_t
582 palkovsky 82 
 *
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 * Supports 0x for hexa & 0 for octal notation.
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 * Does not check for overflows, does not support negative numbers
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 *
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 * @param text Textual representation of number
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 * @return Converted number or 0 if no valid number ofund
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 */
1780 jermar 89 
unative_t atoi(const char *text)
582 palkovsky 90 
{
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    int base = 10;
1780 jermar 92 
    unative_t result = 0;
582 palkovsky 93 
 
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    if (text[0] == '0' && text[1] == 'x') {
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        base = 16;
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        text += 2;
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    } else if (text[0] == '0')
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        base = 8;
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    while (*text) {
603 palkovsky 101 
        if (base != 16 && \
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            ((*text >= 'A' && *text <= 'F' )
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             || (*text >='a' && *text <='f')))
582 palkovsky 104 
            break;
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        if (base == 8 && *text >='8')
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            break;
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591 palkovsky 108 
        if (*text >= '0' && *text <= '9') {
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            result *= base;
582 palkovsky 110 
            result += *text - '0';
591 palkovsky 111 
        } else if (*text >= 'A' && *text <= 'F') {
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            result *= base;
582 palkovsky 113 
            result += *text - 'A' + 10;
603 palkovsky 114 
        } else if (*text >= 'a' && *text <= 'f') {
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            result *= base;
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            result += *text - 'a' + 10;
591 palkovsky 117 
        } else
582 palkovsky 118 
            break;
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        text++;
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    }
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122 
    return result;
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}
1702 cejka 124 
 
2050 decky 125 
 
126 
void order(const uint64_t val, uint64_t *rv, char *suffix)
127 
{
2184 decky 128 
    if (val > 10000000000000000000ULL) {
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        *rv = val / 1000000000000000000ULL;
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        *suffix = 'Z';
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    } else if (val > 1000000000000000000ULL) {
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        *rv = val / 1000000000000000ULL;
2050 decky 133 
        *suffix = 'E';
2184 decky 134 
    } else if (val > 1000000000000000ULL) {
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        *rv = val / 1000000000000ULL;
2050 decky 136 
        *suffix = 'T';
2184 decky 137 
    } else if (val > 1000000000000ULL) {
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        *rv = val / 1000000000ULL;
2104 decky 139 
        *suffix = 'G';
2184 decky 140 
    } else if (val > 1000000000ULL) {
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        *rv = val / 1000000ULL;
2050 decky 142 
        *suffix = 'M';
2184 decky 143 
    } else if (val > 1000000ULL) {
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        *rv = val / 1000ULL;
2104 decky 145 
        *suffix = 'k';
2050 decky 146 
    } else {
147 
        *rv = val;
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        *suffix = ' ';
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    }
150 
}
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1757 jermar 152 
/** @}
1702 cejka 153 
 */