Re: [U-Boot] [PATCH] usb: ums - expose selected partition/s v2

Hi John,

By applying this patch, it will give us some flexibility to expose a selected partition/s.

e.g:

1. To expose several partitions

ums 0 mmc 0:1,0:6

2. To expose the all partitions

ums 0 mmc 0:0

During testing, I've found one issue with this code:

Traditionally the ums command was invoked as:

'ums 0 0'

or

'ums 0 mmc 0'

which exposed all SD|eMMC partitions.

Now, when I run 'ums 0 mmc 0' I can only see the first partition.

Could you add some code to preserve the legacy behavior?

I mean all partitions should be exposed when one types:

'ums 0 0' or 'ums 0 mmc 0' or 'ums 0 mmc 0.0'

3. To expose multiple partititions on several devices

ums 0 mmc 0:1,1:6

Signed-off-by: John Tobias john.tobias.ph@gmail.com

cmd/usb_mass_storage.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-)

diff --git a/cmd/usb_mass_storage.c b/cmd/usb_mass_storage.c index 14eed98..0b49e87 100644 --- a/cmd/usb_mass_storage.c +++ b/cmd/usb_mass_storage.c @@ -50,14 +50,16 @@ static void ums_fini(void)

#define UMS_NAME_LEN 16

-static int ums_init(const char *devtype, const char *devnums) +static int ums_init(const char *devtype, const char *devnums_part_str) {

• char *s, *t, *devnum, *name;

• char *s, *t, *devnum_part_str, *name; struct blk_desc *block_dev;
• disk_partition_t info;
• int partnum; int ret; struct ums *ums_new;

• s = strdup(devnums);

• s = strdup(devnums_part_str); if (!s) return -1;

@@ -65,12 +67,14 @@ static int ums_init(const char *devtype, const char *devnums) ums_count = 0;

for (;;) {

• devnum = strsep(&t, ",");
  

• if (!devnum)
  

• devnum_part_str = strsep(&t, ",");
  

• if (!devnum_part_str)
  break;
  
  

• ret = blk_get_device_by_str(devtype, devnum,
  

&block_dev);

• if (ret < 0)
  

• partnum = blk_get_device_part_str(devtype,
  

devnum_part_str,

•            &block_dev, &info, 1);
  

• if (partnum < 0)
  goto cleanup;
  
  

  /* f_mass_storage.c assumes SECTOR_SIZE sectors */

@@ -86,10 +90,18 @@ static int ums_init(const char *devtype, const char *devnums) } ums = ums_new;

• /* if partnum = 0, expose the whole device */
  

• if (partnum == 0) {
  

• 	ums[ums_count].start_sector = 0;
  

• 	ums[ums_count].num_sectors = block_dev->lba;
  

• } else {
  

• 	ums[ums_count].start_sector = info.start;
  

• 	ums[ums_count].num_sectors = info.size;
  

• }
  

• ums[ums_count].read_sector = ums_read_sector; ums[ums_count].write_sector = ums_write_sector;

• ums[ums_count].start_sector = 0;
  

• ums[ums_count].num_sectors = block_dev->lba;
  

• name = malloc(UMS_NAME_LEN); if (!name) { ret = -1;

@@ -230,6 +242,6 @@ cleanup_ums_init:

U_BOOT_CMD(ums, 4, 1, do_usb_mass_storage, "Use the UMS [USB Mass Storage]",

• "<USB_controller> [<devtype>] <devnum> e.g. ums 0 mmc 0\n"

• "<USB_controller> [<devtype>] dev:part e.g. ums 0 mmc

0:0\n" " devtype defaults to mmc" );