mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
4961eafc25
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> |
||
|---|---|---|
| .. | ||
| ddr.c | ||
| ddr.h | ||
| Kconfig | ||
| ls2080a.c | ||
| MAINTAINERS | ||
| Makefile | ||
| 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'