On Fri, 24 Jun 2022 at 15:18, Christian Löhle <CLoehle@xxxxxxxxxxxxxx> wrote: > > FFU used the wrong assumption, that CMD23 work in > 4k sector chunks when setting the block count. > Instead the CMD23 block count argument just needs > to be a multiple of 8, which the fw_size is anyway. > > Fixes: 89cd01ed865a (mmc_utils: add ffu support) > Signed-off-by: Christian Loehle <cloehle@xxxxxxxxxxxxxx> Applied for https://git.kernel.org/pub/scm/utils/mmc/mmc-utils.git master, thanks! Kind regards Uffe > --- > mmc_cmds.c | 15 ++++++++------- > 1 file changed, 8 insertions(+), 7 deletions(-) > > diff --git a/mmc_cmds.c b/mmc_cmds.c > index bb0f022..12b7802 100644 > --- a/mmc_cmds.c > +++ b/mmc_cmds.c > @@ -2768,7 +2768,6 @@ int do_ffu(int nargs, char **argv) > ssize_t chunk_size; > char *device; > struct mmc_ioc_multi_cmd *multi_cmd = NULL; > - __u32 blocks = 1; > > if (nargs != 3) { > fprintf(stderr, "Usage: ffu <image name> </path/to/mmcblkX> \n"); > @@ -2826,15 +2825,13 @@ int do_ffu(int nargs, char **argv) > goto out; > } > > + /* ensure fw is multiple of native sector size */ > sect_size = (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 0) ? 512 : 4096; > if (fw_size % sect_size) { > fprintf(stderr, "Firmware data size (%jd) is not aligned!\n", (intmax_t)fw_size); > goto out; > } > > - /* calculate required fw blocks for CMD25 */ > - blocks = fw_size / sect_size; > - > /* set CMD ARG */ > arg = ext_csd[EXT_CSD_FFU_ARG_0] | > ext_csd[EXT_CSD_FFU_ARG_1] << 8 | > @@ -2857,13 +2854,17 @@ int do_ffu(int nargs, char **argv) > > /* send block count */ > multi_cmd->cmds[1].opcode = MMC_SET_BLOCK_COUNT; > - multi_cmd->cmds[1].arg = blocks; > + multi_cmd->cmds[1].arg = fw_size / 512; > multi_cmd->cmds[1].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; > > /* send image chunk */ > multi_cmd->cmds[2].opcode = MMC_WRITE_MULTIPLE_BLOCK; > - multi_cmd->cmds[2].blksz = sect_size; > - multi_cmd->cmds[2].blocks = blocks; > + /* > + * blksz and blocks essentially do not matter, as long as the product > + * is fw_size, but some hosts don't handle larger blksz well. > + */ > + multi_cmd->cmds[2].blksz = 512; > + multi_cmd->cmds[2].blocks = fw_size / 512; > multi_cmd->cmds[2].arg = arg; > multi_cmd->cmds[2].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; > multi_cmd->cmds[2].write_flag = 1; > -- > 2.36.1 > > Hyperstone GmbH | Reichenaustr. 39a | 78467 Konstanz > Managing Director: Dr. Jan Peter Berns. > Commercial register of local courts: Freiburg HRB381782 >
