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U-Boot port to Xtensa architecture

Michal Simek u-boot 1 version New

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  1. v1 Latest0 of 8 patches 0 repliesNew

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Cover letter [U-Boot] [PATCH 0/8] U-Boot port to Xtensa architecture
Quoted 15 lines · Max Filippov

Hi Michal,

Quoted 12 lines · Michal Simek
Quoted 10 lines · Max Filippov

this series adds U-Boot port to Xtensa, configurable processor architecture from Tensilica, Inc., now Cadence Design Systems Inc.

Preparation patches clean up OpenCores 10/100 MBit driver, enable it to be used with dedicated packet memory and with gigabit PHY. Two patches add proper xtensa bits: changes to shares files and contents of arch/xtensa. One more patch adds sample xtensa CPU configuration -- Diamond 232. One more patch adds xtfpga board family that consists of Avnet LX60, LX110 and LX200 and Xilinx ML605 and KC705 FPGA boards configured with xtensa bitstream.

Quoted 6 lines
Quoted 1 line

Any link to bitstreams? I have ml605 and kc705 here and will be nice to test it.

The board alone is not enough to boot xtensa software, as the JTAG connector capable of loading code into CPU goes on a separate daughterboard that plugs into FMC connectors. I will check if I can share a bitstream and if it may be somehow used with the FPGA board alone.

Any link to that FMC connector and connections there?

Quoted 3 lines

However you should be able to test with qemu, as it simulates all necessary hardware. Some examples are listed here:
http://wiki.linux-xtensa.org/index.php/Xtensa_on_QEMU

I am more interested to see this work on real HW than on qemu.

Thanks,
Michal

Signature · 14 lines
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Microblaze cpu - http://www.monstr.eu/fdt/
Maintainer of Linux kernel - Xilinx Zynq ARM architecture
Microblaze U-BOOT custodian and responsible for u-boot arm zynq platform


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