[U-Boot] Nios II 10m50 is not working
U-boot for Nios II on the 10m50 dev board is not functioning. The serial terminal prints nothing upon booting up. The u-boot image is loaded via GDB/JTAG to the FPGA on-chip RAM.
Bisect activities were carried and discovered that the change from using dm_scan_fdt_node to dm_scan_fdt_dev in the simple_bus.c. This leads to suspecting the 10m50_devboard.dts need update to include "u-boot,dm-pre-reloc".
However, changing the 10m50_devboard.dts still does not solve the problem. Any idea? Sorry if missing out any info and I will glad to supply. Thanks.
Hi,
On Thu, 6 Jul 2017 10:32:57 +0000 Gan, Yau Wai wrote:
U-boot for Nios II on the 10m50 dev board is not functioning. The serial terminal prints nothing upon booting up. The u-boot image is loaded via GDB/JTAG to the FPGA on-chip RAM.
Bisect activities were carried and discovered that the change from using dm_scan_fdt_node to dm_scan_fdt_dev in the simple_bus.c. This leads to suspecting the 10m50_devboard.dts need update to include "u-boot,dm-pre-reloc".
u-boot,dm-pre-reloc has to be present in each item of the DT path leading to the node where you need it.
Lothar Waßmann
I tried adding the dm-pre-reloc line to every node and sub-node, but it doesn’t help.
On 06/07/2017, 8:26 PM, "Lothar Waßmann" LW@KARO-electronics.de wrote:
Hi,
On Thu, 6 Jul 2017 10:32:57 +0000 Gan, Yau Wai wrote:
U-boot for Nios II on the 10m50 dev board is not functioning. The serial terminal prints nothing upon booting up. The u-boot image is loaded via GDB/JTAG to the FPGA on-chip RAM.
Bisect activities were carried and discovered that the change from using dm_scan_fdt_node to dm_scan_fdt_dev in the simple_bus.c. This leads to suspecting the 10m50_devboard.dts need update to include "u-boot,dm-pre-reloc".
u-boot,dm-pre-reloc has to be present in each item of the DT path leading to the node where you need it.
Lothar Waßmann
participants (2)
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Gan, Yau Wai -
Lothar Waßmann