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enable use of HBM for linux boot

This commit is contained in:
Sergiu Mosanu 2022-02-08 12:18:38 -05:00
parent 53007b3cb6
commit 5a0f69502b
2 changed files with 4 additions and 1 deletions
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2
README.md
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@ -96,7 +96,7 @@ PCIe accelerators boards that you could use to accelerate your applications, Lit
| ForestKitten33 | Xilinx Ultrascale+ | XCVU33P | 125MHz | PCIe | 2 x 1024-bit 4GB HBM2*| Gen3 X16 | ? |
| BCU1525 | Xilinx Ultrascale+ | XCVU9P | 125MHz | PCIe | 4 x 64-bit DDR4 DIMM | Gen3 X16 | ? |
| AlveoU250 | Xilinx Ultrascale+ | XCU250 | 125MHz | PCIe | 4 x 64-bit DDR4 DIMM | Gen2 X16 | ? |
| AlveoU280 | Xilinx Ultrascale+ | XCU280-ES1 | 150MHz | PCIe* | 2 x 64-bit DDR4 DIMM <BR> 2 x 1024-bit 4GB HBM2* | Gen2 X16 | ? |
| AlveoU280 | Xilinx Ultrascale+ | XCU280-ES1 | 150MHz | PCIe* | 2 x 64-bit 16GB DDR4 DIMM* <BR> 2 x 1024-bit 4GB HBM2 | Gen2 X16 | ? |
\* Present on the board but not yet supported or validated with LiteX.

3
litex_boards/targets/xilinx_alveo_u280.py
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@ -220,6 +220,9 @@ class BaseSoC(SoCCore):
axi_lite_hbm = AXILiteInterface(data_width=256, address_width=33)
self.submodules += AXILite2AXI(axi_lite_hbm, axi_hbm)
self.bus.add_slave(f"hbm{i}", axi_lite_hbm, SoCRegion(origin=0x4000_0000 + 0x1000_0000*i, size=0x1000_0000)) # 256MB.
# Link HBM2 channel 0 as main RAM
self.bus.add_region("main_ram", SoCRegion(origin=0x4000_0000, size=0x1000_0000, linker=True)) # 256MB.
else:
# DDR4 SDRAM -------------------------------------------------------------------------------
if not self.integrated_main_ram_size: