u-boot-brain/board/freescale/ls2080a
York Sun c04921414c armv8: fsl-layerscale: Rewrite reserving memory for MC and debug server
MC and debug server are not board-specific. Move reserving memory to SoC
file, using the new board_reserve_ram_top function. Reduce debug server
memory by 2MB to make room for secure memory.

In the system with MC and debug server, the top of u-boot memory
is not the end of memory. PRAM is not used for this reservation.

Signed-off-by: York Sun <yorksun@freescale.com>
2015-12-15 08:57:33 +08:00
..
ddr.c armv8: fsl-layerscape: Make DDR non secure in MMU tables 2015-12-15 08:57:33 +08:00
ddr.h armv8: LS2080A: Rename LS2085A to reflect LS2080A 2015-11-30 08:53:04 -08:00
Kconfig armv8: LS2080A: Rename LS2085A to reflect LS2080A 2015-11-30 08:53:04 -08:00
ls2080a.c armv8: fsl-layerscale: Rewrite reserving memory for MC and debug server 2015-12-15 08:57:33 +08:00
MAINTAINERS armv8: ls2085a: Add support of LS2085A SoC 2015-11-30 09:10:47 -08:00
Makefile armv8: LS2080A: Rename LS2085A to reflect LS2080A 2015-11-30 08:53:04 -08:00
README armv8: LS2080A: Rename LS2085A to reflect LS2080A 2015-11-30 08:53:04 -08:00

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'