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The Linux coding style guide (Documentation/process/coding-style.rst) clearly says: It's a **mistake** to use typedef for structures and pointers. Besides, using typedef for structures is annoying when you try to make headers self-contained. Let's say you have the following function declaration in a header: void foo(bd_t *bd); This is not self-contained since bd_t is not defined. To tell the compiler what 'bd_t' is, you need to include <asm/u-boot.h> #include <asm/u-boot.h> void foo(bd_t *bd); Then, the include direcective pulls in more bloat needlessly. If you use 'struct bd_info' instead, it is enough to put a forward declaration as follows: struct bd_info; void foo(struct bd_info *bd); Right, typedef'ing bd_t is a mistake. I used coccinelle to generate this commit. The semantic patch that makes this change is as follows: <smpl> @@ typedef bd_t; @@ -bd_t +struct bd_info </smpl> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
How to use U-Boot on PHYTEC phyBOARD-i.MX6UL-Segin
--------------------------------------------------
- Configure and build U-Boot for phyCORE-i.MX6UL:
$ make mrproper
$ make phycore_pcl063_defconfig
$ make
This will generate SPL and u-boot-dtb.img images.
- The SPL and u-boot-dtb.img images need to be flashed into the micro SD card:
$ sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
$ sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 bs=1k seek=69; sync
- Jumper settings:
JP1: Open: Boot from NAND
Closed: Boot from SD/MMC1
- Connect the Serial cable to UART0 and the PC for the console.
- Insert the micro SD card in the board and power it up.
- U-Boot messages should come up.