Some news here. With help of Diego I found, that GP partition can be addressed: This works with Zynq> mmc dev 0 4 MMC: block number 0x1 exceeds max(0x0) switch to partitions #4, OK mmc0(part 4) is current device
(0 is the user data area, 1 and 2 the first and second boot partitions, 3 the RPMB partition and 4, 5, 6 and 7 the up to four general purpose partitions). Still a potential problem is the message "MMC: block number 0x1 exceeds max(0x0)"
After that I can see the capacity: Zynq> mmc info Device: sdhci@e0100000 Manufacturer ID: 13 OEM: 14e Name: Q1J54 Tran Speed: 52000000 Rd Block Len: 512 MMC version 5.0 High Capacity: Yes Capacity: 1.8 GiB 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
But even after activating the GP partition a load fails, neither load mmc 0:1 80000000 /bin/busy nor load mmc 0:4 80000000 /bin/busy nor load mmc 0:0 80000000 /bin/busy give anything else back than
** Bad device size - mmc 0 **
And: "mmc info", shows that this command switches back to user mode, as capacity is zero again.
Even this seems not ok to me: Zynq> mmc dev 0 4 MMC: block number 0x1 exceeds max(0x0) switch to partitions #4, OK mmc0(part 4) is current device
Zynq> mmc dev MMC: block number 0x1 exceeds max(0x0) switch to partitions #0, OK mmc0(part 0) is current device
It should just sow the partition, not set it again (without parameter)
Best regards Arno
Gesendet: Freitag, 07. April 2017 um 04:07 Uhr Von: "Jaehoon Chung" jh80.chung@samsung.com An: "Arno Steffens" star@gmx.li Betreff: Re: [U-Boot] Bug in emmc subsystem
Hi Arno,
On 04/07/2017 04:36 AM, Arno Steffens wrote:
Dear Jeahoon Chung,
I am in office earliest on Monday.
From what I remember there is not much additional debug information to be expected (from the code I have in mind). But I will check this to give you as much support as I can. Which files do you want me to enable debug and what command shall I send to create useful information for you?
If enabled CONFIG_DEBUG, maybe all debug message will be printed. I want to see the mmc command's debug message.
Which u-boot version do you use? Well, i can't check in more detail on today. :) But i think this is not bug..because my all boards are working fine with SD-card and eMMC4.41/4.5/5.0.
If it's bug in subsystem, maybe i might see the similar thing...but it's just assumption.. So i need to check whether it's really mmc subsystem bug or not.
This board is a custom board - most eval boards have SDcard instead of fixed emmc.
Do you use SD-card? Not eMMC?
Is there any trick to get access to the GP partition? I couldn't found something about this.
So before converting to GP / pseudoSingleLevelCell-mode (to extend reliablility) I accessed it with “if ext4load mmc 0:1 ${addr_ld} /{file_name} … ”, but this doesn’t work anymore - it returns with: ** Bad device size - mmc 0 **
But maybe I just have to use other command for accessing GP?
Best regards Arno
Am 06.04.2017 um 14:08 schrieb Jaehoon Chung:
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) _______________________________________________