| .. SPDX-License-Identifier: GPL-2.0 |
| .. (C) Copyright 2020 Xilinx, Inc. |
| |
| ZYNQMP-R5 |
| ========= |
| |
| About this |
| ---------- |
| |
| This document describes the information about Xilinx Zynq UltraScale+ MPSOC |
| U-Boot Cortex R5 support. |
| |
| ZynqMP R5 boards |
| ---------------- |
| |
| * zynqmp-r5 - U-Boot running on RPU Cortex-R5 |
| |
| Building |
| -------- |
| |
| configure and build armv7 toolchain:: |
| |
| $ make xilinx_zynqmp_r5_defconfig |
| $ make |
| |
| Notes |
| ^^^^^ |
| |
| Output fragment is u-boot. |
| |
| Loading |
| ------- |
| |
| ZynqMP R5 U-Boot was created for supporting loading OS on RPU. There are two |
| ways how to start U-Boot on R5. |
| |
| Bootgen |
| ^^^^^^^ |
| |
| The first way is to use Xilinx FSBL (First stage |
| bootloader) to load u-boot and start it. The following bif can be used for boot |
| image generation via Xilinx bootgen utility:: |
| |
| |
| the_ROM_image: |
| { |
| [bootloader,destination_cpu=r5-0] fsbl_rpu.elf |
| [destination_cpu=r5-0]u-boot.elf |
| } |
| |
| Bootgen command for building boot.bin:: |
| |
| bootgen -image <bif>.bif -r -w -o i boot.bin |
| |
| |
| U-Boot cpu command |
| ^^^^^^^^^^^^^^^^^^ |
| |
| The second way to load U-Boot to Cortex R5 is from U-Boot running on A53 as is |
| visible from the following log:: |
| |
| U-Boot SPL 2020.10-rc4-00090-g801b3d5c5757 (Sep 15 2020 - 14:07:24 +0200) |
| PMUFW: v1.1 |
| Loading new PMUFW cfg obj (2024 bytes) |
| EL Level: EL3 |
| Multiboot: 0 |
| Trying to boot from MMC2 |
| spl: could not initialize mmc. error: -19 |
| Trying to boot from MMC1 |
| spl_load_image_fat_os: error reading image u-boot.bin, err - -2 |
| NOTICE: ATF running on XCZU7EG/EV/silicon v4/RTL5.1 at 0xfffea000 |
| NOTICE: BL31: v2.2(release):v2.2-614-ged9dc512fb9c |
| NOTICE: BL31: Built : 09:32:09, Mar 13 2020 |
| |
| |
| U-Boot 2020.10-rc4-00090-g801b3d5c5757 (Sep 15 2020 - 14:07:24 +0200) |
| |
| Model: ZynqMP ZCU104 RevC |
| Board: Xilinx ZynqMP |
| DRAM: 2 GiB |
| PMUFW: v1.1 |
| EL Level: EL2 |
| Chip ID: zu7e |
| WDT: Started with servicing (60s timeout) |
| NAND: 0 MiB |
| MMC: mmc@ff170000: 0 |
| Loading Environment from FAT... *** Warning - bad CRC, using default environment |
| |
| In: serial |
| Out: serial |
| Err: serial |
| Bootmode: LVL_SHFT_SD_MODE1 |
| Reset reason: SOFT |
| Net: |
| ZYNQ GEM: ff0e0000, mdio bus ff0e0000, phyaddr 12, interface rgmii-id |
| eth0: ethernet@ff0e0000 |
| Hit any key to stop autoboot: 0 |
| ZynqMP> setenv autoload no |
| ZynqMP> dhcp |
| BOOTP broadcast 1 |
| DHCP client bound to address 192.168.0.167 (8 ms) |
| ZynqMP> tftpboot 20000000 192.168.0.105:u-boot-r5-2.elf |
| Using ethernet@ff0e0000 device |
| TFTP from server 192.168.0.105; our IP address is 192.168.0.167 |
| Filename 'u-boot-r5-2.elf'. |
| Load address: 0x20000000 |
| Loading: ################################################################# |
| ################################################################# |
| ################################################################# |
| ################################################################# |
| ################################################################# |
| ################################################################# |
| ################ |
| 376 KiB/s |
| done |
| Bytes transferred = 2075464 (1fab48 hex) |
| ZynqMP> setenv autostart no |
| ZynqMP> bootelf -p 20000000 |
| ZynqMP> cpu 4 release 10000000 lockstep |
| Using TCM jump trampoline for address 0x10000000 |
| R5 lockstep mode |
| ZynqMP> |
| |
| Then on second uart you can see U-Boot up and running on R5:: |
| |
| U-Boot 2020.10-rc4-00071-g7045622cc9ba (Sep 16 2020 - 13:38:53 +0200) |
| |
| Model: Xilinx ZynqMP R5 |
| DRAM: 512 MiB |
| MMC: |
| In: serial@ff010000 |
| Out: serial@ff010000 |
| Err: serial@ff010000 |
| Net: No ethernet found. |
| ZynqMP r5> |
| |
| Please make sure MIO pins for uart are properly configured to see output. |