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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Tom Rini
855ff8e6dd
|
6 years ago | |
|---|---|---|
| .. | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | 6 years ago | |
| mamoj.c | 6 years ago | |
| spl.c | 6 years ago | |
README
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