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Currently mv-ddr-marvell and atf are taken from the mainline, however, u-boot and mrvl_scp_bl2.img are still not public and must be taken from marvell SDK10, or get the binaries from SolidRun GitHub at https://github.com/GitHub - SolidRun/cn913x_build.git .

Build Instructions

Fetch sources

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Code Block
# SPI Flash
CONFIG_ENV_IS_IN_MMC=n
CONFIG_ENV_IS_IN_SPI_FLASH=y

# eMMC boot 0
CONFIG_MVEBU_MMC_BOOT=y
CONFIG_ENV_IS_IN_MMC=y
CONFIG_ENV_IS_IN_SPI_FLASH=n
CONFIG_SYS_MMC_ENV_DEV=1
CONFIG_SYS_MMC_ENV_PART=1
  

#eMMc boot 1
CONFIG_MVEBU_MMC_BOOT=y
CONFIG_ENV_IS_IN_MMC=y
CONFIG_ENV_IS_IN_SPI_FLASH=n
CONFIG_SYS_MMC_ENV_DEV=1
CONFIG_SYS_MMC_ENV_PART=2

# microSD
CONFIG_MVEBU_MMC_BOOT=y
CONFIG_ENV_IS_IN_MMC=y
CONFIG_ENV_IS_IN_SPI_FLASH=n
CONFIG_SYS_MMC_ENV_DEV=1
CONFIG_SYS_MMC_ENV_PART=0

#Remove any other CONFIG_ENV_IS_IN_* occurrences in defconfig file
Note

Note: Since not all of the options are exposed by menuconfig, appending them to configs/sr_cn913x_cex7_defconfig before running make sr_cn913x_cex7_defconfig is the easiest.

Deploy

From Linux

  • To microSD

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Code Block
dd if=flash-image.bin of=/dev/sdX conv=sync

  • To eMMC bootYboot

Since the eMMC is soldered to the board, this procedure has to be done on the device itself after booting into a Linux system first. Please note that as with the eMMC data partition, the Boot ROM expects to find the bootable image at the start of the partition without any offset.

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Code Block
# start USB stack
usb start
# scanning usb for storage devices... 1 Storage Device(s) found <-- indicates success

# load flash-image.bin to ram
load usb 0:1 $kernel_addr_r flash-image.bin
# u-boot will indicate how many btes were read. Make sure to verify the number!

# initialize spi flash
sf probe

# optionally erase
sf erase 0 0x800000

# finally write loaded file
sf write $kernel_addr_r 0 0x$filesize

https://github.com/SolidRun/u-boot-armada38x/blob/u-boot-2013.01-15t1-clearfog/download-serial.sh

An example is as follows -

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Embedded in download-serial.sh a small C program that gets built every time the script runs and requires curses libraries.

Verified Boot

TBD Read more here: Verified Boot