[U-Boot] Very slow fatload on bcm2835

[Jakub Kicinski]

Hello!

I'm using latest git source of U-Boot on Raspberry Pi Compute Module 
and performance of fatload is quite bad.  Does anyone have any clue
about what can be wrong?  Is it the lack of cache?

Sample boot log:

U-Boot 2015.07-rc2-dirty (Jun 11 2015 - 17:03:17 +0200)
                                                       
DRAM:  412 MiB
WARNING: Caches not enabled
RPI Compute Module         
MMC:   bcm2835_sdhci: 0
reading uboot.env      
In:    serial    
Out:   lcd   
Err:   lcd
Net:   Net Initialization Skipped
No ethernet found.               
Hit any key to stop autoboot:  0 
Booting normal system...         
switch to partitions #0, OK
mmc0(part 0) is current device
reading zImage                
4003816 bytes read in 48930 ms (79.1 KiB/s)


Thanks!