[U-Boot] [PATCH v2 0/8] arm: a few steps to reduce the boot time

[Stephen Warren <swarren@wwwdotorg.org>]

On 02/16/2015 08:13 AM, Przemyslaw Marczak wrote:
> This patchset reduces the boot time for ARM architecture,
> Exynos boards, and boards with DFU enabled.

I tested this series on NVIDIA's Jetson TK1 board. It doesn't seem to 
introduce any new issues, but I did find a couple have crept in recently:

I'm running the following in U-Boot:

setenv dfu_alt_info "/dfu_test.bin ext4 0 1;/dfudummy.bin ext4 0 1"
dfu 0 mmc 0

1)

Whenever any file is uploaded through DFU, I see:

#File System is consistent
file found deleting
update journal finished
File System is consistent
update journal finished
18425346722729591336 bytes written in 4070 ms (3.9 EiB/s)

Notice that the byte count is way off (that's from a 4KB file). The byte 
count is always the same invalid number. I'm not sure if this message 
comes from the ext4 or DFU code.

2)

Both the 4096 and 1048576 DFU tests fail in the read-back stage, with 
the following appearing on the U-Boot console:

#File System is consistent
file found deleting
update journal finished
File System is consistent
update journal finished
18425346722734241092 bytes written in 4070 ms (3.9 EiB/s)
DOWNLOAD ... OK
Ctrl+C to exit ...
#File System is consistent
file found deleting
update journal finished
File System is consistent
update journal finished
18425346722734241092 bytes written in 4091 ms (3.9 EiB/s)
DOWNLOAD ... OK
Ctrl+C to exit ...
4096 bytes read in 127 ms (31.3 KiB/s)
#
UPLOAD ... done
Ctrl+C to exit ...
4096 bytes read in 126 ms (31.3 KiB/s)
#dfu_read: Wrong sequence number! [1] [3]

The host-side DFU test log ends with:

Opening DFU USB device... ID 0955:701a
Warning: Assuming DFU version 1.0
Run-time device DFU version 0100
Found DFU: [0955:701a] devnum=0, cfg=1, intf=0, alt=0, name="/dfu_test.bin"
Claiming USB DFU Interface...
Setting Alternate Setting #0 ...
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 0110
Device returned transfer size 4096
bytes_per_hash=4096
Copying data from DFU device to PC
Starting upload: [###dfu_upload: libusb_control_msg returned -9