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York Sun 4961eafc25 armv8: layerscape: Update early MMU for DDR after initialization 
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>
2017-03-14 08:44:03 -07:00
..
Kconfig NXP: Introduce board/freescale/common/Kconfig and migrate CHAIN_OF_TRUST 2017-01-24 10:33:59 -05:00
ls1012ardb.c armv8: layerscape: Update early MMU for DDR after initialization 2017-03-14 08:44:03 -07:00
MAINTAINERS armv8: ls1012a: Add support of ls1012ardb board 2016-06-03 14:12:51 -07:00
Makefile armv8: ls1012a: Add support of ls1012ardb board 2016-06-03 14:12:51 -07:00
README armv8: ls1012a: Add support of ls1012ardb board 2016-06-03 14:12:51 -07:00

README 

Overview
--------
QorIQ LS1012A Reference Design System (LS1012ARDB) is a high-performance
development platform, with a complete debugging environment.
The LS1012ARDB 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.

LS1012ARDB board Overview
-----------------------
 - SERDES Connections, 4 lanes supporting:
      - PCI Express - 3.0
      - SGMII, SGMII 2.5
      - SATA 3.0
 - DDR Controller
     - 16-bit, 1 GB DDR3L SDRAM memory, running at data rates up to 1 GT/s
 -QSPI: A dual 1:3 switch, NX3L4357GM,115 (U35) drives the QSPI chip-select
 signals to
    - QSPI NOR flash memory (2 virtual banks)
    - the QSPI emulator.s
 - USB 3.0
    - one high-speed USB 2.0/3.0 port.
 - Two enhanced secure digital host controllers:
    - SDHC1 controller can be connected to onboard SDHC connector
    - SDHC2 controller: Three dual 1:4 mux/demux devices,
    74CBTLV3253DS (U30, U31, U33) drive the SDHC2 signals to eMMC,
    SDIO WiFi, SPI, and Ardiuno shield
 - 2 I2C controllers
 - One SATA onboard connectors
 - UART
   - The LS1012A processor consists of two UART controllers,
   out of which only UART1 is used on RDB.
 - ARM JTAG support

Booting Options
---------------
a) QSPI Flash Emu Boot
b) QSPI Flash 1
c) QSPI Flash 2

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