[U-Boot] [PATCH 4/7] dfu: MMC specific routines for DFU operation

Marek Vasut
2012-07-03T22:01:27Z

Dear Tom Rini,

> On Tue, Jul 03, 2012 at 11:29:31PM +0200, Marek Vasut wrote:
> > Dear Lukasz Majewski,
> >
> > > Support for MMC storage devices to work with DFU framework.
> > >
> > > Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
> > > Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> > > Cc: Marek Vasut <marex@denx.de>
> > > ---
> >
> > [...]
> >
> > > +
> > > +#include <common.h>
> > > +#include <malloc.h>
> > > +#include <dfu.h>
> > > +
> > > +int dfu_write_medium_mmc(struct dfu_entity *dfu, void *buf, long *len)
> > > +{
> > > + ALLOC_CACHE_ALIGN_BUFFER(char, cmd_buf, DFU_CMD_BUF_SIZE);
> > > +
> > > + memset(cmd_buf, '\0', sizeof(cmd_buf));
> > > +
> > > + switch (dfu->layout) {
> > > + case RAW_ADDR:
> > > + sprintf(cmd_buf, "mmc write 0x%x %x %x", (unsigned int) buf,
> > > + dfu->data.mmc.lba_start, dfu->data.mmc.lba_size);
> > > + break;
> > > + case FAT:
> > > + sprintf(cmd_buf, "fatwrite mmc %d:%d 0x%x %s %lx",
> > > + dfu->data.mmc.dev, dfu->data.mmc.part,
> > > + (unsigned int) buf, dfu->name, *len);
> > > + break;
> > > + default:
> > > + printf("%s: Wrong layout!\n", __func__);
> > > + }
> > > +
> > > + debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);
> > > + run_command(cmd_buf, 0);
> >
> > Holy Moly ... can we not make this into simple calls to those subsystems
> > ? Instead invoking command is crazy ;-)
>
> Are they really simple? There's a few other places we do this, and so
> long as it's documented that DFU depends on CONFIG_FAT_WRITE for writing
> to fat and so forth.

Well ain't it easier to call fat_write() or similar?

Best regards,
Marek Vasut