| Message ID | 1b5d40da9b8948dc8e8f1b90ef75baab@hyperstone.com |
|---|---|
| State | New |
| Headers | show |
| Series | mmc-utils: dont divide CMD23 count by sector size | expand |
dont ^^^^ Don't > FFU used to divide the fw_size by native sector size. > If native sector size is 4K the accesses need to be aligned > and a multiple of 4K, other than that CMD23 SET_BLOCK_COUNT > does not change. I am not sure what are you fixing, aside of violating a spec requirement: " Downloaded firmware bundle must be DATA_SECTOR_SIZE size aligned (internal padding of the bundle might be required)." So if the fw fluf is not sector-size aligned, you need to make it so. Thanks, Avri > > The previous handling lead to MMC_SET_BLOCK_COUNT setting > a too small block count for the FFU fw_size. > While at it also correct CMD25 blksz and blocks fields > to reflect the actual transfer. > > Signed-off-by: Christian Loehle <cloehle@hyperstone.com> > --- > mmc_cmds.c | 11 ++++------- > 1 file changed, 4 insertions(+), 7 deletions(-) > > diff --git a/mmc_cmds.c b/mmc_cmds.c > index bb0f022..048a0af 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 +2854,13 @@ 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; > 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; > + multi_cmd->cmds[2].blksz = fw_size; > + multi_cmd->cmds[2].blocks = 1; > 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
diff --git a/mmc_cmds.c b/mmc_cmds.c index bb0f022..048a0af 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 +2854,13 @@ 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; 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; + multi_cmd->cmds[2].blksz = fw_size; + multi_cmd->cmds[2].blocks = 1; 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;
FFU used to divide the fw_size by native sector size. If native sector size is 4K the accesses need to be aligned and a multiple of 4K, other than that CMD23 SET_BLOCK_COUNT does not change. The previous handling lead to MMC_SET_BLOCK_COUNT setting a too small block count for the FFU fw_size. While at it also correct CMD25 blksz and blocks fields to reflect the actual transfer. Signed-off-by: Christian Loehle <cloehle@hyperstone.com> --- mmc_cmds.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-)