mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-18 07:58:52 +09:00
![]() In early MMU table, DDR has to be mapped as device memory to avoid speculative access. After DDR is initialized, it needs to be updated to normal memory to allow code execution. To simplify the code, dram_init() is moved into a common file as a weak function. Signed-off-by: York Sun <york.sun@nxp.com> |
||
---|---|---|
.. | ||
Kconfig | ||
ls1012afrdm.c | ||
MAINTAINERS | ||
Makefile | ||
README |
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