mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
b75d8dc564
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> |
||
|---|---|---|
| .. | ||
| cpld.c | ||
| cpld.h | ||
| ddr.c | ||
| eth.c | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| p2041rdb.c | ||
| README | ||
Overview
=========
The P2041 Processor combines four Power Architecture processor cores
with high-performance datapath acceleration architecture(DPAA), CoreNet
fabric infrastructure, as well as network and peripheral bus interfaces
required for networking, telecom/datacom, wireless infrastructure, and
military/aerospace applications.
P2041RDB board is a quad core platform supporting the P2041 processor
of QorIQ DPAA series.
Boot from NOR flash
===================
1. Build image
make P2041RDB_config
make all
2. Program image
=> tftp 1000000 u-boot.bin
=> protect off all
=> erase eff40000 efffffff
=> cp.b 1000000 eff40000 c0000
3. Program RCW
=> tftp 1000000 rcw.bin
=> protect off all
=> erase e8000000 e801ffff
=> cp.b 1000000 e8000000 50
4. Program FMAN Firmware ucode
=> tftp 1000000 ucode.bin
=> protect off all
=> erase eff00000 eff3ffff
=> cp.b 1000000 eff00000 2000
5. Change DIP-switch
SW1[1-5] = 10110
Note: 1 stands for 'on', 0 stands for 'off'
Boot from SDCard
===================
1. Build image
make P2041RDB_SDCARD_config
make all
2. Generate PBL imge
Use PE tool to produce a image used to be programed to
SDCard which contains RCW and U-Boot image.
3. Program the PBL image to SDCard
=> tftp 1000000 pbl_sd.bin
=> mmcinfo
=> mmc write 1000000 8 672
4. Program FMAN Firmware ucode
=> tftp 1000000 ucode.bin
=> mmc write 1000000 690 10
5. Change DIP-switch
SW1[1-5] = 01100
Note: 1 stands for 'on', 0 stands for 'off'
Boot from SPI flash
===================
1. Build image
make P2041RDB_SPIFLASH_config
make all
2. Generate PBL imge
Use PE tool to produce a image used to be programed to
SPI flash which contains RCW and U-Boot image.
3. Program the PBL image to SPI flash
=> tftp 1000000 pbl_spi.bin
=> spi probe 0
=> sf erase 0 100000
=> sf write 1000000 0 $filesize
4. Program FMAN Firmware ucode
=> tftp 1000000 ucode.bin
=> sf erase 110000 10000
=> sf write 1000000 110000 $filesize
5. Change DIP-switch
SW1[1-5] = 10100
Note: 1 stands for 'on', 0 stands for 'off'
Device tree support and how to enable it for different configs
--------------------------------------------------------------
Device tree support is available for p2041rdb for below mentioned boot,
1. NOR Boot
2. NAND Boot
3. SD Boot
4. SPIFLASH Boot
To enable device tree support for other boot, below configs need to be
enabled in relative defconfig file,
1. CONFIG_DEFAULT_DEVICE_TREE="p2041rdb" (Change default device tree name if required)
2. CONFIG_OF_CONTROL
3. CONFIG_MPC85XX_HAVE_RESET_VECTOR if reset vector is located at
CONFIG_RESET_VECTOR_ADDRESS - 0xffc
If device tree support is enabled in defconfig, use 'u-boot-with-dtb.bin'
instead of u-boot.bin for all boot.
CPLD command
============
The CPLD is used to control the power sequence and some serdes lane
mux function.
cpld reset - hard reset to default bank
cpld reset altbank - reset to alternate bank
cpld lane_mux <lane> <mux_value> - set multiplexed lane pin
lane 6: 0 -> slot1 (Default)
1 -> SGMII
lane a: 0 -> slot2 (Default)
1 -> AURORA
lane c: 0 -> slot2 (Default)
1 -> SATA0
lane d: 0 -> slot2 (Default)
1 -> SATA1
Using the Device Tree Source File
=================================
To create the DTB (Device Tree Binary) image file, use a command
similar to this:
dtc -O dtb -b 0 -p 1024 p2041rdb.dts > p2041rdb.dtb
Or use the following command:
{linux-2.6}/make p2041rdb.dtb ARCH=powerpc
then the dtb file will be generated under the following directory:
{linux-2.6}/arch/powerpc/boot/p2041rdb.dtb
Booting Linux
=============
Place a linux uImage in the TFTP disk area.
tftp 1000000 uImage
tftp 2000000 rootfs.ext2.gz.uboot
tftp 3000000 p2041rdb.dtb
bootm 1000000 2000000 3000000