mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-25 01:58:13 +01:00
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>
Overview
--------
QorIQ LS1012A FREEDOM (LS1012AFRDM) is a high-performance development
platform, with a complete debugging environment. The LS1012AFRDM board
supports the QorIQ LS1012A processor and is optimized to support the
high-bandwidth DDR3L memory and a full complement of high-speed SerDes ports.
LS1012A SoC Overview
--------------------
Please refer arch/arm/cpu/armv8/fsl-layerscape/doc/README.soc for LS2080A
SoC overview.
LS1012AFRDM board Overview
-----------------------
- SERDES Connections, 2 lanes supportingspeeds upto 1 Gbit/s
- 2 SGMII 1G PHYs
- DDR Controller
- 4 Gb DDR3L SDRAM memory, running at data rates up to 1 GT/s
operating at 1.35 V
- QSPI
- Onboard 512 Mbit QSPI flash memory running at speed up
to 108/54 MHz
- One high-speed USB 2.0/3.0 port, one USB 2.0 port
- USB 2.0/3.0 port is configured as On-The-Go (OTG) with a
Micro-AB connector.
- USB 2.0 port is a debug port (CMSIS DAP) and is configured
as a Micro-AB device.
- I2C controller
- One I2C bus with connectivity to Arduino headers
- UART
- UART (Console): UART1 (Without flow control) for console
- ARM JTAG support
- ARM Cortex® 10-pin JTAG connector for LS1012A
- CMSIS DAP through K20 microcontroller
- SAI Audio interface
- One SAI port, SAI 2 with full duplex support
- Clocks
- 25 MHz crystal for LS1012A
- 8 MHz Crystal for K20
- 24 MHz for SC16IS740IPW SPI to Dual UART bridge
- Power Supplies
- 5 V input supply from USB
- 0.9 V, 1.35 V, and 1.8 V for VDD/Core, DDR, I/O, and
other board interfaces
Booting Options
---------------
QSPI Flash 1
QSPI flash map
--------------
Images | Size |QSPI Flash Address
------------------------------------------
RCW + PBI | 1MB | 0x4000_0000
U-boot | 1MB | 0x4010_0000
U-boot Env | 1MB | 0x4020_0000
PPA FIT image | 2MB | 0x4050_0000
Linux ITB | ~53MB | 0x40A0_0000