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![Pantelis Antoniou](/assets/img/avatar_default.png)
Dealing with raw block numbers with the dfu is very annoying. Introduce a partition method. Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
214 lines
5.3 KiB
C
214 lines
5.3 KiB
C
/*
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* dfu.c -- DFU back-end routines
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*
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* Copyright (C) 2012 Samsung Electronics
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* author: Lukasz Majewski <l.majewski@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <common.h>
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#include <malloc.h>
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#include <errno.h>
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#include <dfu.h>
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enum dfu_mmc_op {
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DFU_OP_READ = 1,
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DFU_OP_WRITE,
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};
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static int mmc_block_op(enum dfu_mmc_op op, struct dfu_entity *dfu,
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void *buf, long *len)
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{
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char cmd_buf[DFU_CMD_BUF_SIZE];
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sprintf(cmd_buf, "mmc %s 0x%x %x %x",
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op == DFU_OP_READ ? "read" : "write",
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(unsigned int) buf,
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dfu->data.mmc.lba_start,
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dfu->data.mmc.lba_size);
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if (op == DFU_OP_READ)
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*len = dfu->data.mmc.lba_blk_size * dfu->data.mmc.lba_size;
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debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);
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return run_command(cmd_buf, 0);
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}
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static inline int mmc_block_write(struct dfu_entity *dfu, void *buf, long *len)
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{
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return mmc_block_op(DFU_OP_WRITE, dfu, buf, len);
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}
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static inline int mmc_block_read(struct dfu_entity *dfu, void *buf, long *len)
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{
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return mmc_block_op(DFU_OP_READ, dfu, buf, len);
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}
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static int mmc_file_op(enum dfu_mmc_op op, struct dfu_entity *dfu,
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void *buf, long *len)
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{
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char cmd_buf[DFU_CMD_BUF_SIZE];
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char *str_env;
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int ret;
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switch (dfu->layout) {
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case DFU_FS_FAT:
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sprintf(cmd_buf, "fat%s mmc %d:%d 0x%x %s %lx",
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op == DFU_OP_READ ? "load" : "write",
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dfu->data.mmc.dev, dfu->data.mmc.part,
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(unsigned int) buf, dfu->name, *len);
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break;
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case DFU_FS_EXT4:
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sprintf(cmd_buf, "ext4%s mmc %d:%d /%s 0x%x %ld",
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op == DFU_OP_READ ? "load" : "write",
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dfu->data.mmc.dev, dfu->data.mmc.part,
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dfu->name, (unsigned int) buf, *len);
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break;
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default:
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printf("%s: Layout (%s) not (yet) supported!\n", __func__,
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dfu_get_layout(dfu->layout));
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}
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debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);
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ret = run_command(cmd_buf, 0);
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if (ret) {
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puts("dfu: Read error!\n");
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return ret;
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}
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if (dfu->layout != DFU_RAW_ADDR && op == DFU_OP_READ) {
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str_env = getenv("filesize");
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if (str_env == NULL) {
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puts("dfu: Wrong file size!\n");
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return -1;
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}
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*len = simple_strtoul(str_env, NULL, 16);
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}
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return ret;
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}
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static inline int mmc_file_write(struct dfu_entity *dfu, void *buf, long *len)
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{
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return mmc_file_op(DFU_OP_WRITE, dfu, buf, len);
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}
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static inline int mmc_file_read(struct dfu_entity *dfu, void *buf, long *len)
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{
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return mmc_file_op(DFU_OP_READ, dfu, buf, len);
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}
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int dfu_write_medium_mmc(struct dfu_entity *dfu, void *buf, long *len)
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{
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int ret = -1;
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switch (dfu->layout) {
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case DFU_RAW_ADDR:
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ret = mmc_block_write(dfu, buf, len);
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break;
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case DFU_FS_FAT:
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case DFU_FS_EXT4:
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ret = mmc_file_write(dfu, buf, len);
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break;
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default:
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printf("%s: Layout (%s) not (yet) supported!\n", __func__,
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dfu_get_layout(dfu->layout));
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}
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return ret;
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}
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int dfu_read_medium_mmc(struct dfu_entity *dfu, void *buf, long *len)
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{
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int ret = -1;
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switch (dfu->layout) {
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case DFU_RAW_ADDR:
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ret = mmc_block_read(dfu, buf, len);
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break;
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case DFU_FS_FAT:
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case DFU_FS_EXT4:
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ret = mmc_file_read(dfu, buf, len);
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break;
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default:
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printf("%s: Layout (%s) not (yet) supported!\n", __func__,
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dfu_get_layout(dfu->layout));
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}
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return ret;
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}
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int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *s)
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{
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int dev, part;
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struct mmc *mmc;
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block_dev_desc_t *blk_dev;
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disk_partition_t partinfo;
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char *st;
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dfu->dev_type = DFU_DEV_MMC;
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st = strsep(&s, " ");
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if (!strcmp(st, "mmc")) {
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dfu->layout = DFU_RAW_ADDR;
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dfu->data.mmc.lba_start = simple_strtoul(s, &s, 16);
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dfu->data.mmc.lba_size = simple_strtoul(++s, &s, 16);
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dfu->data.mmc.lba_blk_size = get_mmc_blk_size(dfu->dev_num);
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} else if (!strcmp(st, "fat")) {
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dfu->layout = DFU_FS_FAT;
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} else if (!strcmp(st, "ext4")) {
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dfu->layout = DFU_FS_EXT4;
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} else if (!strcmp(st, "part")) {
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dfu->layout = DFU_RAW_ADDR;
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dev = simple_strtoul(s, &s, 10);
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s++;
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part = simple_strtoul(s, &s, 10);
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mmc = find_mmc_device(dev);
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if (mmc == NULL || mmc_init(mmc)) {
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printf("%s: could not find mmc device #%d!\n", __func__, dev);
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return -ENODEV;
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}
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blk_dev = &mmc->block_dev;
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if (get_partition_info(blk_dev, part, &partinfo) != 0) {
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printf("%s: could not find partition #%d on mmc device #%d!\n",
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__func__, part, dev);
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return -ENODEV;
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}
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dfu->data.mmc.lba_start = partinfo.start;
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dfu->data.mmc.lba_size = partinfo.size;
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dfu->data.mmc.lba_blk_size = partinfo.blksz;
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} else {
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printf("%s: Memory layout (%s) not supported!\n", __func__, st);
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return -ENODEV;
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}
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if (dfu->layout == DFU_FS_EXT4 || dfu->layout == DFU_FS_FAT) {
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dfu->data.mmc.dev = simple_strtoul(s, &s, 10);
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dfu->data.mmc.part = simple_strtoul(++s, &s, 10);
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}
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dfu->read_medium = dfu_read_medium_mmc;
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dfu->write_medium = dfu_write_medium_mmc;
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return 0;
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}
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