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docs(u-boot): Add documentation of Ethernet boot for J784s4 SoC
Ethernet boot support has been added to J784s4 SoC, add documentation for the same. Signed-off-by: Chintan Vankar <c-vankar@ti.com>
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‎configs/AM69/AM69_linux_config.txt‎

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'__PCIE_BASE_ADDRESS__' : '2900000'
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'__PCIE_DEVICE_ID__' : '0xb00d'
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'__IMAGE_TYPE__' : 'default'
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'__SPL_VCI_STRING_LEN__' : '18'
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'__SPL_VCI_STRING__' : 'AM69 U-Boot R5 SPL'
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'__UBOOT_VCI_STRING_LEN__' : '19'
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'__UBOOT_VCI_STRING__' : 'AM69 U-Boot A72 SPL'
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Configuration Values
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--------------------

‎configs/AM69/AM69_linux_toc.txt‎

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@@ -31,6 +31,7 @@ linux/Foundational_Components/U-Boot/UG-UART
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linux/Foundational_Components/U-Boot/UG-SATA
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linux/Foundational_Components/U-Boot/UG-UFS
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linux/Foundational_Components/U-Boot/UG-DDRSS-J7
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linux/Foundational_Components/U-Boot/UG-Network-K3
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linux/Foundational_Components/U-Boot/UG-HyperBus
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linux/Foundational_Components/U-Boot/UG-RemoteProc
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linux/Foundational_Components/U-Boot/UG-HSM

‎source/linux/Foundational_Components/U-Boot/UG-General-Info.rst‎

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.. ifconfig:: CONFIG_part_variant in ('J784S4')
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+----------------------------+---------------------------------+--------------------------------+--------------------------------+--------------------------------+
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| Board | SD/eMMC Boot | UART boot | OSPI boot | USB DFU |
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+============================+=================================+================================+================================+================================+
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| J784S4 EVM | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig |
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| | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig |
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+----------------------------+---------------------------------+--------------------------------+--------------------------------+--------------------------------+
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| AM69 HS-FS SK | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig | |
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| | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig | |
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+----------------------------+---------------------------------+--------------------------------+--------------------------------+--------------------------------+
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+----------------------------+---------------------------------+--------------------------------+--------------------------------+--------------------------------+--------------------------------------+
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| Board | SD/eMMC Boot | UART boot | OSPI boot | USB DFU | Ethernet boot |
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+============================+=================================+================================+================================+================================+======================================+
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| J784S4 EVM | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig | |
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| | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig | |
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+----------------------------+---------------------------------+--------------------------------+--------------------------------+--------------------------------+--------------------------------------+
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| AM69 HS-FS SK | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig | j784s4\_evm\_r5\_defconfig | | am69\_sk\_r5\_ethboot\_defconfig |
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| | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig | j784s4\_evm\_a72\_defconfig | | am69\_sk\_a72\_ethboot\_defconfig |
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+----------------------------+---------------------------------+--------------------------------+--------------------------------+--------------------------------+--------------------------------------+
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.. ifconfig:: CONFIG_part_variant in ('J742S2')
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‎source/linux/Foundational_Components/U-Boot/UG-Network-K3.rst‎

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- Ethernet RGMII boot is supported over RGMII on J721S2 SoC.
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.. ifconfig:: CONFIG_part_variant in ('AM64X','AM62X','J722S','AM62PX','J721S2')
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.. ifconfig:: CONFIG_part_variant in ('J784S4')
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Build tiboot3.bin using ``am69_evm_r5_ethboot_defconfig``. Build tispl.bin and u-boot.img using ``am69_evm_a72_ethboot_defconfig``. For instructions to build the bootloader images please refer to :ref:`Build-U-Boot-label`.
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.. important::
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- Ethernet RGMII boot is supported over RGMII on J784S4 SoC.
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.. ifconfig:: CONFIG_part_variant in ('AM64X','AM62X','J722S','AM62PX','J721S2','J784S4')
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If using ISC dhcpd an example host entry would look like this:
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