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HomeDefectsLIN9-1221

Not to be fixed

LIN9-1221 : MMC driver reports incorrect partition size at boot in x86-64 bsp on baytrail platform

Created: Jul 27, 2016 Updated: Mar 6, 2019

Resolved Date: Feb 20, 2019

Found In Version: unknown

Severity: Standard

Applicable for: Wind River Linux 9

Component/s: BSP

Description

Creates 2 partition in a eMMC device(Micron MTFC16GAKAECN-4M_IT) as below.

- Partition 1
 Enhanced User Data Area:
 Size: 0x30 (393,216 KiB) <- 384MB
 Offset address: 0x0

- Partition 2
 General Purpose Partition:
 Size: 0x340 (6,815,744 KiB) <- 6.5GB

MMC driver reports the partitions size like below at boot.

<Snipped from boot log>
 mmc2: BKOPS_EN bit is not set
 mmc2: new high speed DDR MMC card at address 0001
 mmcblk0: mmc2:0001 R1J56L 384 MiB <- Partition 1 size is OK.
 mmcblk0boot0: mmc2:0001 R1J56L partition 1 16.0 MiB
 mmcblk0boot1: mmc2:0001 R1J56L partition 2 16.0 MiB
 mmcblk0gp0: mmc2:0001 R1J56L partition 4 2.50 GiB <- Partition 2 size is incorrect. It should be 6.5GB
 mmcblk0rpmb: mmc2:0001 R1J56L partition 3 128 KiB

Steps to Reproduce

Create a platform project for Bay trail target with below configure command.

 configure --enable-reconfig --enable-board=intel-baytrail-64 --enable-kernel=standard --enable-rootfs=glibc-core --enable-build=production 

Create a partition which size is larger than 4GB.