Hi, I am using latest release: U-boot 2017.03. The board is a custom board, simular to Zynq-MicroZed board. But MicroZed board has SD card, while our board has a fixed mounted emmc vom Micron.
I compiled it again with #define DEBUG 1 in cmd/mmc.c cmd/parts.c cmd/mtdparts.c driver/mmc/mmc.c driver/mmc/zynq_sdhci.c driver/mmc/sdhci.c driver/mmc/mmc_write.c driver/mmc/mmc_uclass.c driver/mmc/mmc_legacy.c But this doesn't give me more information for the commands "mmc info" and mmc hwpartition". As it works with "normal" formatted mmc - have you ever tried to use enhanced partitions? What is correct command to access a GP partition? For me it is not 100% sure how the commands are working, but because of the non consistence in "mmc info" and "mmc hwpartition" about the existence of a GP1 partition it must be a bug in U-boot. My main problems to debug this - I have no comparison to a working system (to know what is wrong and what is ok) and how it works. There is no help/doc about this enhanced partition I found something here: https://lists.denx.de/pipermail/u-boot/2014-April/177378.html What is strange to me: mmc_startup seems not to know MMC Version 5.0. There is a switch matrix, which only goes up to 4.0 ?!? Let me know if I can do something to go ahead with this bug. Thanks Arno > Gesendet: Donnerstag, 06. April 2017 um 14:08 Uhr > Von: "Jaehoon Chung" <jh80.ch...@samsung.com> > An: "Arno Steffens" <s...@gmx.li>, u-boot@lists.denx.de > Betreff: Re: [U-Boot] Bug in emmc subsystem > > Hi, > > On 04/06/2017 03:55 AM, Arno Steffens wrote: > > There seems to be a problem handling emmc with configured GP partition. > > > > Below the "mmc info". The problem might be that user capacity is > > calculated/shown as "0". > > At least it shows the GP1 partition with correct size - which is not the > > case for "mmc hwpartition" - it denies its existence ;) > > > > Can someone help me to fix this? > > Which board do you use? It seems that the initializing mmc might be failed. > After enabling debug option, share the log about mmc. > > Best Regards, > Jaehoon Chung > > > > > Thanks a lot. > > - Arno > > > > > >>mmc info > > Device: sdhci at e0100000 > > Manufacturer ID: 13 > > OEM: 14e > > Name: Q1J54 > > Tran Speed: 52000000 > > Rd Block Len: 512 > > MMC version 5.0 > > High Capacity: Yes > > Capacity: 0 Bytes > > Bus Width: 4-bit > > Erase Group Size: 512 KiB > > HC WP Group Size: 8 MiB > > User Capacity: 0 Bytes WRREL > > Boot Capacity: 2 MiB ENH > > RPMB Capacity: 512 KiB ENH > > GP1 Capacity: 1.8 GiB ENH WRREL > > > >>mmc hwpartition > > Partition configuration: > > No enhanced user data area > > No GP1 partition > > No GP2 partition > > No GP3 partition > > No GP4 partition > > Card already partitioned > > Failed! > > > >>mmc read 0 0 1 > > MMC read: dev # 0, block # 0, count 1 ... MMC: block number 0x1 exceeds > > max(0x0) > > 0 blocks read: ERROR > > > >>mmc dev 0 0 > > MMC: block number 0x1 exceeds max(0x0) > > switch to partitions #0, OK > > mmc0(part 0) is current device > > > > BTW: > > The GP partiton was created in Linux by the mmc-utils with > > “mmc gp create -y 1908736 1 1 0 /dev/mmcblk0” > > > > Linux can handle this as you can see in boot message: > > [ 1.248426] mmc0: new high speed MMC card at address 0001 > > [ 1.264301] mmcblk0: mmc0:0001 Q1J54A 0 B > > [ 1.268525] mmcblk0boot0: mmc0:0001 Q1J54A partition 1 2.00 MiB > > [ 1.284605] mmcblk0boot1: mmc0:0001 Q1J54A partition 2 2.00 MiB > > [ 1.300666] mmcblk0gp0: mmc0:0001 Q1J54A partition 4 1.82 GiB > > [ 1.316563] mmcblk0rpmb: mmc0:0001 Q1J54A partition 3 512 KiB > > [ 1.325255] mmcblk0gp0: p1 p2 p3 > > … > > [ 3.083325] EXT4-fs (mmcblk0gp0p1): INFO: recovery required on readonly > > filesystem > > [ 3.090893] EXT4-fs (mmcblk0gp0p1): write access will be enabled during > > recovery > > [ 3.189597] EXT4-fs (mmcblk0gp0p1): recovery complete > > [ 3.196310] EXT4-fs (mmcblk0gp0p1): mounted filesystem with ordered data > > mode. Opts: (null) > > _______________________________________________ > > U-Boot mailing list > > U-Boot@lists.denx.de > > https://lists.denx.de/listinfo/u-boot > > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
