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---------------------------------------------
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Kirkwood Boot Image generation using mkimage
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---------------------------------------------
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This document describes the U-Boot feature as it
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is implemented for the Kirkwood family of SoCs.
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The Kirkwood SoC's can boot directly from NAND FLASH,
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SPI FLASH, SATA etc. using its internal bootRom support.
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for more details refer section 24.2 of Kirkwood functional specifications.
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ref: www.marvell.com/products/embedded.../kirkwood/index.jsp
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Command syntax:
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--------------
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./tools/mkimage -l <kwboot_file>
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to list the kwb image file details
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./tools/mkimage -n <board specific configuration file> \
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-T kwbimage -a <start address> -e <execution address> \
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-d <input_raw_binary> <output_kwboot_file>
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for ex.
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./tools/mkimage -n ./board/Marvell/openrd_base/kwbimage.cfg \
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-T kwbimage -a 0x00600000 -e 0x00600000 \
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-d u-boot.bin u-boot.kwb
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kwbimage support available with mkimage utility will generate kirkwood boot
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image that can be flashed on the board NAND/SPI flash. The make target
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which uses mkimage to produce such an image is "u-boot.kwb". For example:
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export BUILD_DIR=/tmp/build
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make distclean
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make yourboard_config
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make $BUILD_DIR/u-boot.kwb
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Board specific configuration file specifications:
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------------------------------------------------
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1. This file must present in the $(BOARDDIR). The default name is
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kwbimage.cfg. The name can be set as part of the full path
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to the file using CONFIG_SYS_KWD_CONFIG (probably in
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include/configs/<yourboard>.h). The path should look like:
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$(CONFIG_BOARDDIR)/<yourkwbimagename>.cfg
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2. This file can have empty lines and lines starting with "#" as first
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character to put comments
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3. This file can have configuration command lines as mentioned below,
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any other information in this file is treated as invalid.
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Configuration command line syntax:
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---------------------------------
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1. Each command line is must have two strings, first one command or address
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and second one data string
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2. Following are the valid command strings and associated data strings:-
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Command string data string
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-------------- -----------
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BOOT_FROM nand/spi/sata
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NAND_ECC_MODE default/rs/hamming/disabled
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NAND_PAGE_SIZE any uint16_t hex value
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SATA_PIO_MODE any uint32_t hex value
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DDR_INIT_DELAY any uint32_t hex value
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DATA regaddr and regdara hex value
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you can have maximum 55 such register programming commands
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3. All commands are optional to program
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Typical example of kwimage.cfg file:
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-----------------------------------
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# Boot Media configurations
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BOOT_FROM nand
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NAND_ECC_MODE default
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NAND_PAGE_SIZE 0x0800
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# Configure RGMII-0 interface pad voltage to 1.8V
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DATA 0xFFD100e0 0x1b1b1b9b
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# DRAM Configuration
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DATA 0xFFD01400 0x43000c30
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DATA 0xFFD01404 0x37543000
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DATA 0xFFD01408 0x22125451
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DATA 0xFFD0140C 0x00000a33
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DATA 0xFFD01410 0x000000cc
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DATA 0xFFD01414 0x00000000
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DATA 0xFFD01418 0x00000000
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DATA 0xFFD0141C 0x00000C52
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DATA 0xFFD01420 0x00000040
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DATA 0xFFD01424 0x0000F17F
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DATA 0xFFD01428 0x00085520
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DATA 0xFFD0147C 0x00008552
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DATA 0xFFD01504 0x0FFFFFF1
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DATA 0xFFD01508 0x10000000
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DATA 0xFFD0150C 0x0FFFFFF5
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DATA 0xFFD01514 0x00000000
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DATA 0xFFD0151C 0x00000000
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DATA 0xFFD01494 0x00030000
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DATA 0xFFD01498 0x00000000
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DATA 0xFFD0149C 0x0000E803
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DATA 0xFFD01480 0x00000001
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# End of Header extension
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DATA 0x0 0x0
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------------------------------------------------
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Author: Prafulla Wadaskar <prafulla@marvell.com>
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