efi/boot1/ufs_module.c

	ufs_module.c revision 199767f8919635c4928607450d9e0abb932109ce
/*-
 * Copyright (c) 1998 Robert Nordier
 * All rights reserved.
 * Copyright (c) 2001 Robert Drehmel
 * All rights reserved.
 * Copyright (c) 2014 Nathan Whitehorn
 * All rights reserved.
 * Copyright (c) 2015 Eric McCorkle
 * All rights reverved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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 AUTHOR 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 AUTHOR 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.
 *
 * $FreeBSD$
 */

#include <stdarg.h>
#include <stdbool.h>
#include <sys/cdefs.h>
#include <sys/param.h>
#include <efi.h>

#include "boot_module.h"

static dev_info_t *devinfo;
static dev_info_t *devices;

static int
dskread(void *buf, u_int64_t lba, int nblk)
{
    int size;
    EFI_STATUS status;

    lba = lba / (devinfo->dev->Media->BlockSize / DEV_BSIZE);
    size = nblk * DEV_BSIZE;

    status = devinfo->dev->ReadBlocks(devinfo->dev,
        devinfo->dev->Media->MediaId, lba, size, buf);

    if (status != EFI_SUCCESS) {
        DPRINTF("dskread: failed dev: %p, id: %u, lba: %lu, size: %d, "
            "status: %lu\n", devinfo->dev,
            devinfo->dev->Media->MediaId, lba, size,
            EFI_ERROR_CODE(status));
        return (-1);
    }

    return (0);
}

#include "ufsread.c"

static struct dmadat __dmadat;

static int
init_dev(dev_info_t* dev)
{

    devinfo = dev;
    dmadat = &__dmadat;

    return fsread(0, NULL, 0);
}

static EFI_STATUS
probe(dev_info_t* dev)
{

    if (init_dev(dev) < 0)
        return (EFI_UNSUPPORTED);

    add_device(&devices, dev);

    return (EFI_SUCCESS);
}

static EFI_STATUS
load(const char *filepath, dev_info_t *dev, void **bufp, size_t *bufsize)
{
    ufs_ino_t ino;
    EFI_STATUS status;
    size_t size;
    ssize_t read;
    void *buf;

    DPRINTF("Loading '%s' from %s\n", filepath, devpath_str(dev->devpath));

    if (init_dev(dev) < 0) {
        DPRINTF("Failed to init device\n");
        return (EFI_UNSUPPORTED);
    }

    if ((ino = lookup(filepath)) == 0) {
        DPRINTF("Failed to lookup '%s' (file not found?)\n", filepath);
        return (EFI_NOT_FOUND);
    }

    if (fsread_size(ino, NULL, 0, &size) < 0 || size <= 0) {
        printf("Failed to read size of '%s' ino: %d\n", filepath, ino);
        return (EFI_INVALID_PARAMETER);
    }

    if ((status = bs->AllocatePool(EfiLoaderData, size, &buf)) !=
        EFI_SUCCESS) {
        printf("Failed to allocate read buffer %zu for '%s' (%lu)\n",
            size, filepath, EFI_ERROR_CODE(status));
        return (status);
    }

    read = fsread(ino, buf, size);
    if ((size_t)read != size) {
        printf("Failed to read '%s' (%zd != %zu)\n", filepath, read,
            size);
        (void)bs->FreePool(buf);
        return (EFI_INVALID_PARAMETER);
    }

    DPRINTF("Load complete\n");

    *bufp = buf;
    *bufsize = size;

    return (EFI_SUCCESS);
}

static void
status()
{
    int i;
    dev_info_t *dev;

    for (dev = devices, i = 0; dev != NULL; dev = dev->next, i++)
        ;

    printf("%s found ", ufs_module.name);
    switch (i) {
    case 0:
        printf("no partitions\n");
        break;
    case 1:
        printf("%d partition\n", i);
        break;
    default:
        printf("%d partitions\n", i);
    }
}

static dev_info_t *
_devices()
{

    return (devices);
}

const boot_module_t ufs_module =
{
    .name = "UFS",
    .probe = probe,
    .load = load,
    .status = status,
    .devices = _devices
};