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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> |
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| .. | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| mpc837xerdb.c | ||
| pci.c | ||
| README | ||
Freescale MPC837xE-RDB Board
-----------------------------------------
1. Board Description
The MPC837xE-RDB are reference boards featuring the Freescale MPC8377E,
MPC8378E, and the MPC8379E processors in a Mini-ITX form factor.
The MPC837xE-RDB's have the following common features:
A) 256-MBytes on-board DDR2 unbuffered SDRAM
B) 8-Mbytes NOR Flash
C) 32-MBytes NAND Flash
D) 1 Secure Digital High Speed Card (SDHC) Interface
E) 1 Gigabit Ethernet
F) 5-port Ethernet switch (Vitesse 7385)
G) 1 32-bit, 3.3 V, PCI slot
H) 1 32-bit, 3.3 V, Mini-PCI slot
I) 4-port USB 2.0 Hub
J) 1-port OTG USB
K) 2 serial ports (top main console)
L) on board Oscillator: 66M
The MPC837xE-RDB's have the following differences:
MPC8377E-RDB MPC8378E-RDB MPC8379E-RDB
SATA controllers 2 0 4
PCI-Express (mini) 2 2 0
SGMII Ports 0 2 0
2. Memory Map
2.1. The memory map should look pretty much like this:
Address Range Device Size Port Size
(Bytes) (Bits)
=========================== ================= ======= =========
0x0000_0000 0x0fff_ffff DDR 256M 64
0x1000_0000 0x7fff_ffff Empty 1.75G -
0x8000_0000 0x8fff_ffff PCI MEM prefetch 256M 32
0x9000_0000 0x9fff_ffff PCI MEM non-prefetch 256M 32
0xe030_0000 0xe03f_ffff PCI I/O space 1M 32
0xe000_0000 0xe00f_ffff Int Mem Reg Space 1M -
0xe060_0000 0xe060_7fff NAND Flash 32K 8
0xfe00_0000 0xfe7f_ffff NOR Flash on CS0 8M 16
3. Definitions
3.1 Explanation of NEW definitions in:
include/configs/MPC837XERDB.h
CONFIG_MPC83xx MPC83xx family for both MPC8349 and MPC8360
CONFIG_MPC837x MPC837x specific
CONFIG_MPC837XERDB MPC837xE-RDB board specific
4. Compilation
Assuming you're using BASH shell:
export CROSS_COMPILE=your-cross-compile-prefix
cd u-boot
make distclean
make MPC837XERDB_config
make
5. Downloading and Flashing Images
5.0 Download over serial line using Kermit:
loadb $loadaddr
[Drop to kermit:
^\c
send <u-boot-bin-image>
c
]
Or via tftp:
tftp $loadaddr u-boot.bin
5.1 Reflash U-Boot Image using U-Boot
tftp $loadaddr u-boot.bin
protect off fe000000 fe0fffff
erase fe000000 fe0fffff
cp.b $loadaddr fe000000 $filesize
6. Additional Notes:
1) The console is connected to the top RS-232 connector and the
baudrate for MPC837XE-RDB is 115200bps.