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imx: nandbcb: add support for writing BCB only

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Add subcommand for add writing BCB only, where we provide appropriate
offsets for firmware1 and firmware2 and size.

Example of usage:
> nandbcb bcbonly 0x00180000 0x00080000 0x00200000
Writing 1024 bytes to 0x0: randomizing
OK
Writing 1024 bytes to 0x20000: randomizing
OK

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Tested-by: Max Krummenacher <max.krummenacher@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
This commit is contained in:
Igor Opaniuk 2019-11-03 16:49:46 +01:00 committed by Stefano Babic
parent 1b899a8041
commit ae8a53ece0
1 changed files with 91 additions and 1 deletions
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92
arch/arm/mach-imx/cmd_nandbcb.c
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@ -433,6 +433,88 @@ err:
return ret;
}
static int do_nandbcb_bcbonly(int argc, char * const argv[])
{
struct fcb_block *fcb;
struct dbbt_block *dbbt;
u32 fw_len, fw1_off, fw2_off;
struct mtd_info *mtd;
void *dbbt_page, *dbbt_data_page;
int dev, ret;
dev = nand_curr_device;
if ((dev < 0) || (dev >= CONFIG_SYS_MAX_NAND_DEVICE) ||
(!get_nand_dev_by_index(dev))) {
puts("No devices available\n");
return CMD_RET_FAILURE;
}
mtd = get_nand_dev_by_index(dev);
if (argc < 3)
return CMD_RET_FAILURE;
fw_len = simple_strtoul(argv[1], NULL, 16);
fw1_off = simple_strtoul(argv[2], NULL, 16);
if (argc > 3)
fw2_off = simple_strtoul(argv[3], NULL, 16);
else
fw2_off = fw1_off;
/* fill fcb */
fcb = kzalloc(sizeof(*fcb), GFP_KERNEL);
if (!fcb) {
debug("failed to allocate fcb\n");
ret = -ENOMEM;
return CMD_RET_FAILURE;
}
fill_fcb(fcb, mtd, fw1_off / mtd->writesize,
fw2_off / mtd->writesize, fw_len / mtd->writesize);
/* fill dbbt */
dbbt_page = kzalloc(mtd->writesize, GFP_KERNEL);
if (!dbbt_page) {
debug("failed to allocate dbbt_page\n");
ret = -ENOMEM;
goto fcb_err;
}
dbbt_data_page = kzalloc(mtd->writesize, GFP_KERNEL);
if (!dbbt_data_page) {
debug("failed to allocate dbbt_data_page\n");
ret = -ENOMEM;
goto dbbt_page_err;
}
dbbt = dbbt_page;
dbbt->checksum = 0;
dbbt->fingerprint = DBBT_FINGERPRINT2;
dbbt->version = DBBT_VERSION_1;
ret = dbbt_fill_data(mtd, dbbt_data_page, 0);
if (ret < 0)
goto dbbt_data_page_err;
else if (ret > 0)
dbbt->dbbtpages = 1;
/* write fcb and dbbt to nand */
ret = write_fcb_dbbt(mtd, fcb, dbbt, dbbt_data_page, 0);
dbbt_data_page_err:
kfree(dbbt_data_page);
dbbt_page_err:
kfree(dbbt_page);
fcb_err:
kfree(fcb);
if (ret < 0) {
printf("failed to write FCB/DBBT\n");
return CMD_RET_FAILURE;
}
return CMD_RET_SUCCESS;
}
static int do_nandbcb_update(int argc, char * const argv[])
{
struct mtd_info *mtd;
@ -489,6 +571,11 @@ static int do_nandbcb(cmd_tbl_t *cmdtp, int flag, int argc,
goto done;
}
if (strcmp(cmd, "bcbonly") == 0) {
ret = do_nandbcb_bcbonly(argc, argv);
goto done;
}
done:
if (ret != -1)
return ret;
@ -499,7 +586,10 @@ usage:
#ifdef CONFIG_SYS_LONGHELP
static char nandbcb_help_text[] =
"update addr off|partition len - update 'len' bytes starting at\n"
" 'off|part' to memory address 'addr', skipping bad blocks";
" 'off|part' to memory address 'addr', skipping bad blocks\n"
"bcbonly fw-size fw1-off [fw2-off] - write only BCB (FCB and DBBT)\n"
" where `fw-size` is fw sizes in bytes, `fw1-off` and\n"
" and `fw2-off` - firmware offsets ";
#endif
U_BOOT_CMD(nandbcb, 5, 1, do_nandbcb,