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/*
* Copyright 2014 Broadcom Corporation.
* Copyright 2015 Free Electrons.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <common.h>
#include <fastboot.h>
#include <image-sparse.h>
#include <sparse_format.h>
#include <linux/mtd/mtd.h>
#include <jffs2/jffs2.h>
#include <nand.h>
static char *response_str;
struct fb_nand_sparse {
nand_info_t *nand;
struct part_info *part;
};
__weak int board_fastboot_erase_partition_setup(char *name)
{
return 0;
}
__weak int board_fastboot_write_partition_setup(char *name)
{
return 0;
}
static int fb_nand_lookup(const char *partname, char *response,
nand_info_t **nand,
struct part_info **part)
{
struct mtd_device *dev;
int ret;
u8 pnum;
ret = mtdparts_init();
if (ret) {
error("Cannot initialize MTD partitions\n");
fastboot_fail(response_str, "cannot init mtdparts");
return ret;
}
ret = find_dev_and_part(partname, &dev, &pnum, part);
if (ret) {
error("cannot find partition: '%s'", partname);
fastboot_fail(response_str, "cannot find partition");
return ret;
}
if (dev->id->type != MTD_DEV_TYPE_NAND) {
error("partition '%s' is not stored on a NAND device",
partname);
fastboot_fail(response_str, "not a NAND device");
return -EINVAL;
}
*nand = &nand_info[dev->id->num];
return 0;
}
static int _fb_nand_erase(nand_info_t *nand, struct part_info *part)
{
nand_erase_options_t opts;
int ret;
memset(&opts, 0, sizeof(opts));
opts.offset = part->offset;
opts.length = part->size;
opts.quiet = 1;
printf("Erasing blocks 0x%llx to 0x%llx\n",
part->offset, part->offset + part->size);
ret = nand_erase_opts(nand, &opts);
if (ret)
return ret;
printf("........ erased 0x%llx bytes from '%s'\n",
part->size, part->name);
return 0;
}
static int _fb_nand_write(nand_info_t *nand, struct part_info *part,
void *buffer, unsigned int offset,
unsigned int length, size_t *written)
{
int flags = WITH_WR_VERIFY;
#ifdef CONFIG_FASTBOOT_FLASH_NAND_TRIMFFS
flags |= WITH_DROP_FFS;
#endif
return nand_write_skip_bad(nand, offset, &length, written,
part->size - (offset - part->offset),
buffer, flags);
}
static int fb_nand_sparse_write(struct sparse_storage *storage,
void *priv,
unsigned int offset,
unsigned int size,
char *data)
{
struct fb_nand_sparse *sparse = priv;
size_t written;
int ret;
ret = _fb_nand_write(sparse->nand, sparse->part, data,
offset * storage->block_sz,
size * storage->block_sz, &written);
if (ret < 0) {
printf("Failed to write sparse chunk\n");
return ret;
}
return written / storage->block_sz;
}
void fb_nand_flash_write(const char *partname, unsigned int session_id,
void *download_buffer, unsigned int download_bytes,
char *response)
{
struct part_info *part;
nand_info_t *nand = NULL;
int ret;
/* initialize the response buffer */
response_str = response;
ret = fb_nand_lookup(partname, response, &nand, &part);
if (ret) {
error("invalid NAND device");
fastboot_fail(response_str, "invalid NAND device");
return;
}
ret = board_fastboot_write_partition_setup(part->name);
if (ret)
return;
if (is_sparse_image(download_buffer)) {
struct fb_nand_sparse sparse_priv;
sparse_storage_t sparse;
sparse_priv.nand = nand;
sparse_priv.part = part;
sparse.block_sz = nand->writesize;
sparse.start = part->offset / sparse.block_sz;
sparse.size = part->size / sparse.block_sz;
sparse.name = part->name;
sparse.write = fb_nand_sparse_write;
ret = store_sparse_image(&sparse, &sparse_priv, session_id,
download_buffer);
} else {
printf("Flashing raw image at offset 0x%llx\n",
part->offset);
ret = _fb_nand_write(nand, part, download_buffer, part->offset,
download_bytes, NULL);
printf("........ wrote %u bytes to '%s'\n",
download_bytes, part->name);
}
if (ret) {
fastboot_fail(response_str, "error writing the image");
return;
}
fastboot_okay(response_str, "");
}
void fb_nand_erase(const char *partname, char *response)
{
struct part_info *part;
nand_info_t *nand = NULL;
int ret;
/* initialize the response buffer */
response_str = response;
ret = fb_nand_lookup(partname, response, &nand, &part);
if (ret) {
error("invalid NAND device");
fastboot_fail(response_str, "invalid NAND device");
return;
}
ret = board_fastboot_erase_partition_setup(part->name);
if (ret)
return;
ret = _fb_nand_erase(nand, part);
if (ret) {
error("failed erasing from device %s", nand->name);
fastboot_fail(response_str, "failed erasing from device");
return;
}
fastboot_okay(response_str, "");
}
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