ffu is done using a single multi-ioctl to carry the entire firmware image. This is limiting the fw image size to be at most 512KB, as the mmc driver restricts each single ioc data to be at most MMC_IOC_MAX_BYTES. The spec however, allows the fw image to be written using multiple write commands. So if the fw image is larger than 512KB, split it into a series of smaller chunks. Avri Altman (6): mmc-utils: Add fill_switch_cmd handler mmc-utils: Add arg argument to set_single_cmd mmc-utils: ffu: Simplify ext_csd bytes parsing mmc-utils: ffu: Add ffu multi-command set handler mmc-utils: ffu: Allow ffu of large images mmc-utils: ffu: Add optional chunk-size argument mmc.c | 6 +- mmc_cmds.c | 161 +++++++++++++++++++++++++++-------------------------- 2 files changed, 86 insertions(+), 81 deletions(-) -- 2.40.1
