u-boot/board/varisys/cyrus
Masahiro Yamada b75d8dc564 treewide: convert bd_t to struct bd_info by coccinelle
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>
2020-07-17 09:30:13 -04:00
..
cyrus.c treewide: convert bd_t to struct bd_info by coccinelle 2020-07-17 09:30:13 -04:00
cyrus.h treewide: convert bd_t to struct bd_info by coccinelle 2020-07-17 09:30:13 -04:00
ddr.c common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
eth.c treewide: convert bd_t to struct bd_info by coccinelle 2020-07-17 09:30:13 -04:00
Kconfig NXP: Introduce board/freescale/common/Kconfig and migrate CHAIN_OF_TRUST 2017-01-24 10:33:59 -05:00
law.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
MAINTAINERS mpc85xx: Add support for the Varisys Cyrus board 2015-11-04 15:19:34 -08:00
Makefile SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
pbi.cfg mpc85xx: Add support for the Varisys Cyrus board 2015-11-04 15:19:34 -08:00
pci.c treewide: convert bd_t to struct bd_info by coccinelle 2020-07-17 09:30:13 -04:00
rcw_p5020_v2.cfg mpc85xx: Add support for the Varisys Cyrus board 2015-11-04 15:19:34 -08:00
rcw_p5040.cfg mpc85xx: Add support for the Varisys Cyrus board 2015-11-04 15:19:34 -08:00
README mpc85xx: Add support for the Varisys Cyrus board 2015-11-04 15:19:34 -08:00
tlb.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00

Rebuilding u-boot for Cyrus

The Cyrus defconfigs are Cyrus_P5020_defconfig and Cyrus_P5040_defconfig.

They currently disable size optimization in order to avoid a relocation
bug in some versions of GCC. As the output size is a constant, the size
optimization is not currently important.

Cyrus boots off a microSD card in a slot on the motherboard. This requires
that the u-boot is built for the Pre-Boot Loader on the P5020/P5040.
In order to reflash u-boot, you must download u-boot.pbl, then write it
onto the card. To do that from u-boot:

> tftp 1000000 u-boot.pbl
> mmc write 1000000 8 672

If you want to do this via a card reader in linux:

> dd if=u-boot.pbl of=/dev/sdX bs=512 oseek=8