[U-Boot] socfpga: immediate hang when accessing memory at 0x10000

[Pavel Machek]

Hi!

I got networking and MMC card to work on recent u-boot, but now I'm
hitting DRAM region where any access just hangs the system.

Any idea what could be there / why is it hanging?

I tried reset_assert_all_bridges(), but no change.

Memory from  md 100000 works ok, again, so it seems the only
problematic window is 10000 to 100000.

Best regards,
								Pavel


U-Boot SPL 2013.01.01 (Apr 15 2014 - 09:18:35)
BOARD : <similar to sockit>
SDRAM: Initializing MMR registers
SDRAM: Calibrating PHY
SEQ.C: Preparing to start memory calibration
SEQ.C: CALIBRATION PASSED
SDRAM : Running simple memory test...passed
ALTERA DWMMC: 0


U-Boot 2014.07-01237-g3f7a123-dirty (Aug 26 2014 - 13:01:22)

CPU   : Altera SOCFPGA Platform
BOARD : Altera SOCFPGA Cyclone5 Board
DRAM:  set ram size
set ram size done
512 MiB
WARNING: Caches not enabled
derive_clocks_for_drivers... 
derive_clocks_for_drivers... done
MMC:   SOCFPGA DWMMC: 0
Using default environment

In:    serial
Out:   serial
Err:   serial
Turning off all the bridges
Net:   phy_micrel_init
reset disable, init
ksz9021: configuring
Configuring PHY skew timing for Micrel ksz9021
ksz9021: skew ok
dwmac.ff702000
Hit any key to stop autoboot:  0 
SOCFPGA_CYCLONE5 # md 0fff0
0000fff0: 6fffcf9c 82b67ce0 7380ebf3 546e06de    ...o.|.....s..nT
00010000:


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