| /* |
| * Copyright 2012 Google Inc. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but without any warranty; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <assert.h> |
| #include <libpayload.h> |
| #include <vboot_api.h> |
| |
| #include "base/list.h" |
| #include "drivers/storage/blockdev.h" |
| |
| static void setup_vb_disk_info(VbDiskInfo *disk, BlockDev *bdev) |
| { |
| disk->name = bdev->name; |
| disk->handle = (VbExDiskHandle_t)bdev; |
| disk->bytes_per_lba = bdev->block_size; |
| disk->lba_count = bdev->block_count; |
| disk->flags = bdev->removable ? VB_DISK_FLAG_REMOVABLE : |
| VB_DISK_FLAG_FIXED; |
| } |
| |
| VbError_t VbExDiskGetInfo(VbDiskInfo **info_ptr, uint32_t *count, |
| uint32_t disk_flags) |
| { |
| *count = 0; |
| |
| // Figure out which devices/controllers to operate on. |
| ListNode *ctrlrs, *devs; |
| if (disk_flags & VB_DISK_FLAG_FIXED) { |
| devs = &fixed_block_devices; |
| ctrlrs = &fixed_block_dev_controllers; |
| } else { |
| devs = &removable_block_devices; |
| ctrlrs = &removable_block_dev_controllers; |
| } |
| |
| // Update any controllers that need it. |
| BlockDevCtrlr *ctrlr; |
| list_for_each(ctrlr, *ctrlrs, list_node) { |
| if (ctrlr->ops.update && ctrlr->need_update && |
| ctrlr->ops.update(&ctrlr->ops)) { |
| return VBERROR_UNKNOWN; |
| } |
| } |
| |
| // Count the devices. |
| for (ListNode *node = devs->next; node; node = node->next, (*count)++) |
| ; |
| |
| // Allocate enough VbDiskInfo structures. |
| VbDiskInfo *disk = malloc(sizeof(VbDiskInfo) * *count); |
| *info_ptr = disk; |
| |
| // Fill them from the BlockDev structures. |
| BlockDev *bdev; |
| list_for_each(bdev, *devs, list_node) |
| setup_vb_disk_info(disk++, bdev); |
| |
| return VBERROR_SUCCESS; |
| } |
| |
| VbError_t VbExDiskFreeInfo(VbDiskInfo *infos, |
| VbExDiskHandle_t preserve_handle) |
| { |
| free(infos); |
| return VBERROR_SUCCESS; |
| } |
| |
| VbError_t VbExDiskRead(VbExDiskHandle_t handle, uint64_t lba_start, |
| uint64_t lba_count, void *buffer) |
| { |
| BlockDevOps *ops = &((BlockDev *)handle)->ops; |
| if (ops->read(ops, lba_start, lba_count, buffer) != lba_count) { |
| printf("Read failed.\n"); |
| return VBERROR_UNKNOWN; |
| } |
| return VBERROR_SUCCESS; |
| } |
| |
| VbError_t VbExDiskWrite(VbExDiskHandle_t handle, uint64_t lba_start, |
| uint64_t lba_count, const void *buffer) |
| { |
| BlockDevOps *ops = &((BlockDev *)handle)->ops; |
| if (ops->write(ops, lba_start, lba_count, buffer) != lba_count) { |
| printf("Write failed.\n"); |
| return VBERROR_UNKNOWN; |
| } |
| return VBERROR_SUCCESS; |
| } |