uboot/u-boot-stm32mp-2020.01/board/freescale/ls2080a
chenyf 996bded6bb 1 2024-01-10 14:52:34 +08:00
..
Kconfig 1 2024-01-10 14:52:34 +08:00
MAINTAINERS 1 2024-01-10 14:52:34 +08:00
Makefile 1 2024-01-10 14:52:34 +08:00
README 1 2024-01-10 14:52:34 +08:00
ddr.c 1 2024-01-10 14:52:34 +08:00
ddr.h 1 2024-01-10 14:52:34 +08:00
ls2080a.c 1 2024-01-10 14:52:34 +08:00

README

Freescale ls2080a_emu

This is a emulator target with limited peripherals.

Memory map from core's view

0x00_0000_0000 .. 0x00_000F_FFFF	Boot Rom
0x00_0100_0000 .. 0x00_0FFF_FFFF	CCSR
0x00_1800_0000 .. 0x00_181F_FFFF	OCRAM
0x00_3000_0000 .. 0x00_3FFF_FFFF	IFC region #1
0x00_8000_0000 .. 0x00_FFFF_FFFF	DDR region #1
0x05_1000_0000 .. 0x05_FFFF_FFFF	IFC region #2
0x80_8000_0000 .. 0xFF_FFFF_FFFF	DDR region #2

Other addresses are either reserved, or not used directly by U-Boot.
This list should be updated when more addresses are used.

Booting Linux flavors which do not support 48-bit VA (< Linux 3.18)
-------------------------------------------------------------------
One needs to use appropriate bootargs to boot Linux flavors which do
not support 48-bit VA (for e.g. < Linux 3.18) by appending mem=2048M, as shown
below:

=> setenv bootargs 'console=ttyS1,115200 root=/dev/ram
   earlycon=uart8250,mmio,0x21c0600,115200 default_hugepagesz=2m hugepagesz=2m
   hugepages=16 mem=2048M'