upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/bticino/mamoj/README

2.8 KiB

BTicino Mamoj board:
===================

Build:

$ make mrproper
$ make imx6dl_mamoj_defconfig
$ make

This will generate the SPL image called SPL and the u-boot-dtb.img.

The following methods can be used for booting Mamoj boards:

1. USB SDP boot

2. eMMC boot (via DFU)

3. Falcon mode

1. USB SDP boot:
---------------

- Build imx_usb_loader

$ git clone git://github.com/boundarydevices/imx_usb_loader.git
$ cd imx_usb_loader
$ make

- Build the BSP and copy SPL, u-boot-dtb.img in imx_usb_loader directory

- Put the board in "Serial Download Mode"

- Plug-in USB-to-Serial, Open minicom 1152008N1 and USB OTG cables to Host

- Turn-on board

- Identify VID/PID using lsusb

Bus 001 Device 010: ID 15a2:0061 Freescale Semiconductor, Inc. i.MX 6Solo/6DualLite SystemOnChip in RecoveryMode

- Update the conf files

imx_usb.conf
0x15a2:0x0061, mx6_usb_rom.conf, 0x0525:0xb4a4, mx6_usb_sdp_spl.conf

mx6_usb_rom.conf
mx6_usb
hid,1024,0x910000,0x10000000,512M,0x00900000,0x40000
SPL:jump header2

mx6_usb_sdp_spl.conf
mx6_spl_sdp
hid,uboot_header,1024,0x910000,0x10000000,512M,0x00900000,0x40000
u-boot-dtb.img:jump header2

- Launch the loader

$ ./imx_usb

We can see U-Boot boot from USB SDP on minicom

2. eMMC boot via DFU:
--------------------

Once booted from USB SDP, program the eMMC as below(make sure to connect USB OTG)

- Change eMMC partition config

=> mmc partconf 2 1 0 0

- Partition eMMC on host

=> ums 0 mmc 2

Host will able to detect the eMMC disk as UMS, partition the same.

- Program SPL

=> setenv dfu_alt_info $dfu_alt_info_spl
=> dfu 0 mmc 2

At Host

# dfu-util -D SPL -a spl

- Program u-boot-dtb.img

=> setenv dfu_alt_info $dfu_alt_info_uboot
=> dfu 0 mmc 2

At Host

# dfu-util -D u-boot-dtb.img -a u-boot

Poweroff and Poweron the board and see U-Boot booting from eMMC.

3. Falcon mode:
--------------

- Skip 10M space and create dual partitions for eMMC, start sector is 20480

Partition Map for MMC device 2 -- Partition Type: DOS

Part Start Sector Num Sectors UUID Type
1 20480 131072 c52e78be-01 83
2 151552 7581696 c52e78be-02 83

- Write uImage

=> fatload mmc 2:1 $kernel_addr_r uImage
=> mmc write $kernel_addr_r 0x1000 0x4000

- Write dtb and args

=> setenv bootargs console=ttymxc2,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait rw quiet
=> fatload mmc 2:1 $fdt_addr_r imx6dl-mamoj.dtb
=> spl export fdt $kernel_addr_r - $fdt_addr_r
=> mmc write 0x13000000 0x800 0x800

Poweroff and Poweron the board and see Linux booting directly after SPL.

--
Jagan Teki <jagan@amarulasolutions.com>
03/12/18