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| 1 | # Booting OS Images on ZynqMP target boards | ||
| 2 | |||
| 3 | Booting OS images on ZynqMP boards can be done using JTAG, SD, eMMC, QSPI and | ||
| 4 | NAND boot modes. | ||
| 5 | |||
| 6 | * [Setting Up the Target](#setting-up-the-target) | ||
| 7 | * [Booting from JTAG](#booting-from-jtag) | ||
| 8 | * [Loading boot components using XSCT](#loading-boot-components-using-xsct) | ||
| 9 | * [Loading Kernel, Root Filesystem and U-boot boot script](#loading-kernel-root-filesystem-and-u-boot-boot-script) | ||
| 10 | * [Using XSCT](#using-xsct) | ||
| 11 | * [Using TFTP](#using-tftp) | ||
| 12 | * [Booting from SD](#booting-from-sd) | ||
| 13 | * [Booting from QSPI](#booting-from-qspi) | ||
| 14 | |||
| 15 | ## Setting Up the Target | ||
| 16 | 1. Connect a USB cable between the CP2180 USB-to-Quad-UART bridge USB Micro-B on | ||
| 17 | the target and the USB port on the host machine. | ||
| 18 | 2. Connect a micro USB cable from the ZCU102 board USB UART port (J83) to the USB | ||
| 19 | port on the host machine. | ||
| 20 | 3. Default UART terminal(serial port) settings is Speed `115200`, Data `8 bit`, | ||
| 21 | Parity `None`, Stop bits ` 1 bit` and Flow control `None`. | ||
| 22 | 4. Set the board to JTAG and other boot mode by setting the boot mode switch by | ||
| 23 | referring to board user guide. For zynqmp-generic machine configuration | ||
| 24 | file zcu102 evaluation board is used as reference and below is the | ||
| 25 | configuration boot mode settings (SW6). | ||
| 26 | |||
| 27 | > **Note:** Switch OFF = 1 = High; ON = 0 = Low | ||
| 28 | |||
| 29 | | Boot Mode | Mode Pins [3:0] | Mode SW6 [3:0] | Comments | | ||
| 30 | |-----------|-----------------|-------------------|---------------------------| | ||
| 31 | | JTAG | 0000 | ON, ON, ON, ON | PS JTAG | | ||
| 32 | | QSPI | 0010 | ON, ON, OFF, ON | QSPI 32-bit addressing | | ||
| 33 | | SD | 1110 | OFF, OFF, OFF, ON | SD 3.0 with level shifter | | ||
| 34 | |||
| 35 | ## Booting from JTAG | ||
| 36 | |||
| 37 | This boot flow requires the use of the AMD Xilinx tools, specifically XSCT and | ||
| 38 | the associated JTAG device drivers. This also requires access to the JTAG interface | ||
| 39 | on the board, a number of AMD Xilinx and third-party boards come with on-board JTAG | ||
| 40 | modules. | ||
| 41 | |||
| 42 | 1. Source the Vivado or Vitis tools `settings.sh` scripts. | ||
| 43 | 2. Power on the board, Open the XSCT console in the Vitis IDE by clicking the | ||
| 44 | XSCT button. Alternatively, you can also open the XSCT console by selecting | ||
| 45 | Xilinx -> XSCT Console. | ||
| 46 | ``` | ||
| 47 | $ xsct | ||
| 48 | ``` | ||
| 49 | 3. In the XSCT console, connect to the target over JTAG using the connect command. | ||
| 50 | Optionally user can use `-url` to specify the local/remote hw_server. The | ||
| 51 | connect command returns the channel ID of the connection. | ||
| 52 | ``` | ||
| 53 | xsct% connect | ||
| 54 | ``` | ||
| 55 | 4. The targets command lists the available targets and allows you to select a | ||
| 56 | target using its ID. The targets are assigned IDs as they are discovered on | ||
| 57 | the JTAG chain, so the IDs can change from session to session. | ||
| 58 | ``` | ||
| 59 | xsct% targets | ||
| 60 | ``` | ||
| 61 | |||
| 62 | > **Note:** For non-interactive usage such as scripting, you can use the `-filter` | ||
| 63 | option to select a target instead of selecting the target using its ID. | ||
| 64 | |||
| 65 | ### Loading boot components using XSCT | ||
| 66 | |||
| 67 | 1. Download the boot images for the target using XSCT with the `fpga` and `dow` | ||
| 68 | command. ZyqnMP boot images will be located in the `${DEPLOY_DIR_IMAGE}` | ||
| 69 | directory. | ||
| 70 | |||
| 71 | > **Note:** In yocto by default, ${DEPLOY_DIR_IMAGE}/system.dtb is used for both | ||
| 72 | > u-boot and kernel. | ||
| 73 | |||
| 74 | 2. Program the bitstream or skip this step if you are loading from u-boot or linux. | ||
| 75 | ``` | ||
| 76 | xsct% fpga -no-revision-check ${DEPLOY_DIR_IMAGE}/download.bit | ||
| 77 | ``` | ||
| 78 | 3. By default, JTAG security gates are enabled. Disable the security gates for | ||
| 79 | DAP, PL TAP, and PMU (this makes the PMU MB target visible to the debugger). | ||
| 80 | ``` | ||
| 81 | xsct% targets -set -nocase -filter {name =~ "*PSU*"} | ||
| 82 | xsct% mask_write 0xFFCA0038 0x1C0 0x1C0 | ||
| 83 | ``` | ||
| 84 | 3. Verify if the PMU MB target is listed under the PMU device. Now, load the PMU | ||
| 85 | firmware. | ||
| 86 | ``` | ||
| 87 | xsct% targets -set -nocase -filter {name =~ "*MicroBlaze PMU*"} | ||
| 88 | xsct% catch {stop} | ||
| 89 | xsct% dow ${DEPLOY_DIR_IMAGE}/pmufw.elf | ||
| 90 | xsct% con | ||
| 91 | ``` | ||
| 92 | 5. Reset APU Cortex-A53 Core 0 to load and execute FSBL, This step is important, | ||
| 93 | because when the ZynqMP boots up in JTAG boot mode, all the APU and RPU cores | ||
| 94 | are held in reset. You must clear the resets on each core before performing | ||
| 95 | debugging on these cores. You can use the `rst` command in XSCT to clear the | ||
| 96 | resets. | ||
| 97 | ``` | ||
| 98 | xsct% targets -set -nocase -filter {name =~ "*A53*#0"} | ||
| 99 | xsct% rst -processor -clear-registers | ||
| 100 | ``` | ||
| 101 | 6. Download and run FSBL from APU Cortex-A53 Core 0 | ||
| 102 | ``` | ||
| 103 | xsct% dow ${DEPLOY_DIR_IMAGE}/zynqmp_fsbl.elf | ||
| 104 | xsct% con | ||
| 105 | ``` | ||
| 106 | 7. Now download TF-A, U-boot.elf and Device tree to APU and execute. | ||
| 107 | ``` | ||
| 108 | xsct% stop | ||
| 109 | xsct% dow ${DEPLOY_DIR_IMAGE}/bl31.elf | ||
| 110 | xsct% dow ${DEPLOY_DIR_IMAGE}/u-boot.elf | ||
| 111 | xsct% dow -data ${DEPLOY_DIR_IMAGE}/system.dtb 0x100000 | ||
| 112 | xsct% con | ||
| 113 | ``` | ||
| 114 | |||
| 115 | 8. In the target Serial Terminal, press any key to stop the U-Boot auto-boot. | ||
| 116 | ``` | ||
| 117 | ... | ||
| 118 | Hit any key to stop autoboot: 0 | ||
| 119 | U-Boot> | ||
| 120 | ``` | ||
| 121 | |||
| 122 | ### Loading Kernel, Root Filesystem and U-boot boot script | ||
| 123 | |||
| 124 | Load the images into the target DDR/PL DRR load address i.e., | ||
| 125 | `DDR base address + <image_offset>`. | ||
| 126 | |||
| 127 | Below example uses base DDR address as 0x0 which matches in vivado address editor. | ||
| 128 | |||
| 129 | | Image Type | Base DDR Address | Image Offset | Load Address in DDR | | ||
| 130 | |--------------------|------------------|--------------|---------------------| | ||
| 131 | | Kernel | 0x0 | 0x200000 | 0x200000 | | ||
| 132 | | Device Tree | 0x0 | 0x1000 | 0x1000 | | ||
| 133 | | Rootfs | 0x0 | 0x04000000 | 0x4000000 | | ||
| 134 | | U-boot boot script | 0x0 | 0x20000000 | 0x20000000 | | ||
| 135 | |||
| 136 | > **Note:** | ||
| 137 | > 1. `<target-image>` refers to core-image-minimal or petalinux-image-minimal | ||
| 138 | > 2. For pxeboot boot create a symlink for `<target-image>-${MACHINE}-${DATETIME}.cpio.gz.u-boot` | ||
| 139 | > as shown `$ ln -sf ${DEPLOY_DIR_IMAGE}/<target-image>-${MACHINE}-${DATETIME}.cpio.gz.u-boot ${DEPLOY_DIR_IMAGE}/rootfs.cpio.gz.u-boot` | ||
| 140 | > to ensure the INITRD name in pxeboot.cfg matches with image name. | ||
| 141 | > 3. Whilst it is possible to load the images via JTAG this connection is slow and | ||
| 142 | this process can take a long time to execute (more than 10 minutes). If your | ||
| 143 | system has ethernet it is recommended that you use TFTP to load these images | ||
| 144 | using U-Boot. | ||
| 145 | > 4. If common ${DEPLOY_DIR_IMAGE}/system.dtb is used by u-boot and kernel, this | ||
| 146 | > is already part of boot.bin we can skip loading dtb, else load kernel dtb. | ||
| 147 | |||
| 148 | #### Using XSCT | ||
| 149 | |||
| 150 | 1. Suspend the execution of active target using `stop` command in XSCT. | ||
| 151 | ``` | ||
| 152 | xsct% stop | ||
| 153 | ``` | ||
| 154 | 2. Using the `dow` command to load the images into the target DDR/PL DDR load | ||
| 155 | address. | ||
| 156 | ``` | ||
| 157 | xsct% dow -data ${DEPLOY_DIR_IMAGE}/Image 0x200000 | ||
| 158 | xsct% dow -data ${DEPLOY_DIR_IMAGE}/system.dtb 0x100000 | ||
| 159 | xsct% dow -data ${DEPLOY_DIR_IMAGE}/core-image-minimal-${MACHINE}.cpio.gz.u-boot 0x4000000 | ||
| 160 | xsct% dow -data ${DEPLOY_DIR_IMAGE}/boot.scr 0x20000000 | ||
| 161 | ``` | ||
| 162 | |||
| 163 | #### Using TFTP | ||
| 164 | |||
| 165 | 1. Configure the `ipaddr` and `serverip` of the U-Boot environment. | ||
| 166 | ``` | ||
| 167 | Versal> set serverip <server ip> | ||
| 168 | Versal> set ipaddr <board ip> | ||
| 169 | ``` | ||
| 170 | 2. Load the images to DDR address. Make sure images are copied to tftp directory. | ||
| 171 | ``` | ||
| 172 | U-Boot> tftpboot 0x200000 ${TFTPDIR}/Image | ||
| 173 | U-Boot> tftpboot 0x100000 ${TFTPDIR}/system.dtb | ||
| 174 | U-Boot> tftpboot 0x4000000 ${TFTPDIR}/core-image-minimal-${MACHINE}.cpio.gz.u-boot | ||
| 175 | U-Boot> tftpboot 0x20000000 ${TFTPDIR}/boot.scr | ||
| 176 | |||
| 177 | ``` | ||
| 178 | ### Booting Linux | ||
| 179 | |||
| 180 | Once the images are loaded continue the execution. | ||
| 181 | |||
| 182 | 1. After loading images resume the execution of active target using the `con` | ||
| 183 | command in XSCT shell, Skip step 1 for if you have used TFTP to load images. | ||
| 184 | ``` | ||
| 185 | xsct% con | ||
| 186 | ``` | ||
| 187 | 2. Terminate xsct shell. | ||
| 188 | ``` | ||
| 189 | xsct% exit | ||
| 190 | ``` | ||
| 191 | 3. In the target Serial Terminal, from U-Boot prompt run `boot` command. | ||
| 192 | ``` | ||
| 193 | U-Boot> boot | ||
| 194 | ``` | ||
| 195 | |||
| 196 | ## Booting from SD | ||
| 197 | |||
| 198 | 1. Load the SD card into the ZCU102 board in the J100 SD slot. | ||
| 199 | 2. Configure the ZCU102 board to boot in SD-Boot mode (1-ON, 2-OFF, 3-OFF, 4-OFF) | ||
| 200 | by setting the SW6. Refer [Setting Up the Target](#setting-up-the-target). | ||
| 201 | 3. Follow SD boot instructions [README](README.booting.storage.md) for more details. | ||
| 202 | |||
| 203 | ## Booting from QSPI | ||
| 204 | |||
| 205 | 1. To boot ZCU012 board in QSPI boot mode, Power on the ZCU102 board and boot | ||
| 206 | using JTAG or SD boot mode, to ensure that U-Boot is running and also have | ||
| 207 | boot.bin copied to DDR location using XSCT `dow` or `tftpboot` or `fatload` | ||
| 208 | command. | ||
| 209 | 2. Follow Flash boot instructions [README](README.booting.flash.md) for more details. | ||
| 210 | 3. After flashing the images, turn off the power switch on the board, and change | ||
| 211 | the SW6 boot mode pin settings to QSPI boot mode (1-ON, 2-ON, 3-OFF, 4-ON) by | ||
| 212 | setting the SW6. Refer [Setting Up the Target](#setting-up-the-target). \ No newline at end of file | ||
