libboot/flash.c

/*
 * Copyright (C) 2008 The Android Open Source Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the 
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <boot/boot.h>
#include <boot/flash.h>

#define MAX_PTN 16

static ptentry ptable[MAX_PTN];
static unsigned pcount = 0;

void flash_add_ptn(ptentry *ptn)
{
    if(pcount < MAX_PTN){
        memcpy(ptable + pcount, ptn, sizeof(*ptn));
        pcount++;
    }
}

void flash_dump_ptn(void)
{
    unsigned n;
    for(n = 0; n < pcount; n++) {
        ptentry *ptn = ptable + n;
        dprintf("ptn %d name='%s' start=%d len=%d\n",
                n, ptn->name, ptn->start, ptn->length);
    }
}


ptentry *flash_find_ptn(const char *name)
{
    unsigned n;
    for(n = 0; n < pcount; n++) {
        if(!strcmp(ptable[n].name, name)) {
            return ptable + n;
        }
    }
    return 0;
}

ptentry *flash_get_ptn(unsigned n)
{
    if(n < pcount) {
        return ptable + n;
    } else {
        return 0;
    }
}

unsigned flash_get_ptn_count(void)
{
    return pcount;
}