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mx6sabresd: Update to SPL only mode

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mx6sabresd only supports SPL mode now, so update the README file
accordingly.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
This commit is contained in:
Fabio Estevam 2017-05-18 08:15:04 -03:00 • committed by Stefano Babic
parent 3791c31746
commit 54d63bb1ad
1 changed files with 35 additions and 63 deletions
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98
board/freescale/mx6sabresd/README
View file

@ -1,56 +1,47 @@
How to use and build U-Boot on mx6sabresd:
----------------------------------
Currently there are four methods for booting mx6sabresd boards:
1. Booting from SD card via normal U-Boot (u-boot.imx)
2. Booting from eMMC via normal U-Boot
3. Booting via SPL (SPL and u-boot.img)
4. Booting via Falcon mode (SPL launches the kernel directly)
1. Booting from SD card via normal U-Boot
How to use and build U-Boot on mx6sabresd
-----------------------------------------
$ make mx6qsabresd_defconfig (If you want to build for mx6qsabresd)
The following methods can be used for booting mx6sabresd boards:
or
1. Booting from SD card
$ make mx6dlsabresd_defconfig (If you want to build for mx6dlsabresd)
2. Booting from eMMC
3. Booting via Falcon mode (SPL launches the kernel directly)
1. Booting from SD card via SPL
-------------------------------
mx6sabresd_defconfig target supports mx6q/mx6dl/mx6qp sabresd variants.
In order to build it:
$ make mx6sabresd_defconfig
$ make
This will generate the image called u-boot.imx.
This will generate the SPL and u-boot.img binaries.
- Flash the u-boot.imx binary into the SD card:
- Flash the SPL binary into the SD card:
$ sudo dd if=u-boot.imx of=/dev/sdb bs=1K seek=1 && sync
$ sudo dd if=SPL of=/dev/sdX bs=1K seek=1 && sync
- Flash the u-boot.img binary into the SD card:
$ sudo dd if=u-boot.img of=/dev/sdX bs=1K seek=69 && sync
2. Booting from eMMC via normal U-Boot
--------------------------------------
2. Booting from eMMC
--------------------
$ make mx6qsabresd_defconfig (If you want to build for mx6qsabresd)
or
$ make mx6dlsabresd_defconfig (If you want to build for mx6dlsabresd)
$ make mx6sabresd_defconfig
$ make
This will generate the image called u-boot.imx.
This will generate the SPL and u-boot.img binaries.
- Flash the u-boot.imx binary into the eMMC:
Set SW6 to download mode: 00001100
Plug a usb cable to USB-OTG and load the u-boot image using the imx_usb_loader
tool (https://github.com/boundarydevices/imx_usb_loader):
$ sudo ./imx_usb u-boot.imx
- Boot first from SD card as shown in the previous section
In U-boot change the eMMC partition config:
@ -60,48 +51,29 @@ Mount the eMMC in the host PC:
=> ums 0 mmc 2
Flash the u-boot.imx binary
- Flash SPL and u-boot.img binaries into the eMMC:
$ sudo dd if=u-boot.imx of=/dev/sdX bs=1K seek=1 && sync
$ sudo dd if=SPL of=/dev/sdX bs=1K seek=1 && sync
$ sudo dd if=u-boot.img of=/dev/sdX bs=1K seek=69 && sync
Set SW6 to eMMC 8-bit boot: 11010110
3. Booting via SPL
------------------
Other method for building U-Boot on mx6qsabresd and mx6qpsabresd is
through SPL. In order to do so:
$ make mx6sabresd_spl_defconfig
$ make
This will generate the SPL image called SPL and the u-boot.img.
- Flash the SPL image into the SD card:
$ sudo dd if=SPL of=/dev/sdb bs=1K seek=1 && sync
- Flash the u-boot.img image into the SD card:
$ sudo dd if=u-boot.img of=/dev/sdbbs=1K seek=69 && sync
4. Booting via Falcon mode
3. Booting via Falcon mode
--------------------------
$ make mx6sabresd_spl_defconfig
$ make mx6sabresd_defconfig
$ make
This will generate the SPL image called SPL and the u-boot.img.
- Flash the SPL image into the SD card:
$ sudo dd if=SPL of=/dev/sdb bs=1K seek=1 oflag=sync status=none && sync
$ sudo dd if=SPL of=/dev/sdX bs=1K seek=1 oflag=sync status=none && sync
- Flash the u-boot.img image into the SD card:
$ sudo dd if=u-boot.img of=/dev/sdbbs=1K seek=69 oflag=sync status=none && sync
$ sudo dd if=u-boot.img of=/dev/sdX bs=1K seek=69 oflag=sync status=none && sync
Create a partition for root file system and extract it there: