[U-Boot] [PATCH v4 01/18] mmc: show hardware partition sizes in mmcinfo output

[Pantelis Antoniou]

Hi Stephen,

> On Jan 22, 2015, at 20:42 , Stephen Warren <swarren at wwwdotorg.org> wrote:
> 
> On 12/23/2014 02:50 AM, Diego Santa Cruz wrote:
>> There is currently no command that will provide an overview of the hardware
>> partitions present on an eMMC device, one has to switch to every partition
>> via "mmc dev" and run mmcinfo for each to get the partition's capacity.
>> This commit adds a few lines of output to mmcinfo with the sizes of the
>> present partitions, like this:
>> 
>> Device: OMAP SD/MMC
>> Manufacturer ID: fe
>> OEM: 14e
>> Name: MMC16
>> Tran Speed: 52000000
>> Rd Block Len: 512
>> MMC version 4.41
>> High Capacity: Yes
>> Capacity: 13.8 GiB
>> Bus Width: 4-bit
>> User Capacity: 13.8 GiB
>> Boot Capacity: 16 MiB
>> RPMB Capacity: 128 KiB
>> GP1 Capacity: 64 MiB
>> GP2 Capacity: 64 MiB
> 
> I have an MMC device which has at least boot HW partitions, yet with the very latest code in u-boot.git, I don't see the additional lines mentioned above. My HW partitions are still working fine, since I can select a boot partition and mmcinfo shows the correct "Capacity" for it:
> 
> Any ideas why?
> 
> Tegra124 (Jetson TK1) # mmc dev 0
> switch to partitions #0, OK
> mmc0(part 0) is current device
> Tegra124 (Jetson TK1) # mmcinfo
> Device: Tegra SD/MMC
> Manufacturer ID: 45
> OEM: 100
> Name: SEM16
> Tran Speed: 52000000
> Rd Block Len: 512
> MMC version 4.5
> High Capacity: Yes
> Capacity: 14.7 GiB <<<< Sounds right for a 16GB device with partitions
> Bus Width: 8-bit
> Erase Group Size: 512 KiB
> <<<< No HW partition information is printed here
> 
> Tegra124 (Jetson TK1) # mmc dev 0 1 <<<< select "boot0" HW partition
> switch to partitions #1, OK
> mmc0(part 1) is current device
> Tegra124 (Jetson TK1) # mmcinfo
> Device: Tegra SD/MMC
> Manufacturer ID: 45
> OEM: 100
> Name: SEM16
> Tran Speed: 52000000
> Rd Block Len: 512
> MMC version 4.5
> High Capacity: Yes
> Capacity: 4 MiB <<<< "boot0" partition size correctly reported
> Bus Width: 8-bit
> Erase Group Size: 512 KiB

That is really weird; are you sure you got the latest version of u-boot
containing those patches?

>       if (!IS_SD(mmc) && mmc->version >= MMC_VERSION_4_41) {
> 

The test for printing out the capacities is as above, you should
get the printouts.

Interesting; for reference on beaglebone black I get for the onboard eMMC:

> mmc1(part 0) is current device
> U-Boot# mmc info
> Device: OMAP SD/MMC
> Manufacturer ID: fe
> OEM: 14e
> Name: MMC02
> Tran Speed: 52000000
> Rd Block Len: 512
> MMC version 4.41
> High Capacity: No
> Capacity: 1.8 GiB
> Bus Width: 4-bit
> Erase Group Size: 512 KiB
> HC WP Group Size: 0 Bytes
> User Capacity: 1.8 GiB
> Boot Capacity: 1 MiB ENH
> RPMB Capacity: 128 KiB ENH

Regards

— Pantelis