From: Igor Opaniuk igor.opaniuk@toradex.com
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 ---
arch/arm/mach-imx/cmd_nandbcb.c | 92 ++++++++++++++++++++++++++++++++- 1 file changed, 91 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-imx/cmd_nandbcb.c b/arch/arm/mach-imx/cmd_nandbcb.c index 72d8a5be28..a02edfc582 100644 --- a/arch/arm/mach-imx/cmd_nandbcb.c +++ b/arch/arm/mach-imx/cmd_nandbcb.c @@ -364,6 +364,88 @@ 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; @@ -420,6 +502,11 @@ 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; @@ -429,7 +516,10 @@ usage:
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 ";
U_BOOT_CMD(nandbcb, 5, 1, do_nandbcb, "i.MX6 Nand BCB",