Mirrors/u-boot
1
0
Fork 0
mirror of https://source.denx.de/u-boot/u-boot.git synced 2026-06-13 15:03:58 +03:00
Code Issues Packages Projects Releases Wiki Activity

lmb: Optionally limit available memory to 4 GiB on limited systems

Browse Source 
Some architectures can not DMA above 4 GiB boundary,
limit available memory to memory below 4 GiB boundary.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Tested-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> #rpi4 8GiB
This commit is contained in:
Marek Vasut
2026-06-03 16:17:55 +02:00
committed by Tom Rini
parent 4065ee552b
commit af4aad1f0a
2 changed files with 27 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/Kconfig
View File

@@ -1295,6 +1295,14 @@ config SPL_LMB_ARCH_MEM_MAP
memory map. Enable this config in such scenarios which allow
architectures and boards to define their own memory map.
config LMB_LIMIT_DMA_BELOW_4G
bool
depends on LMB
default y if ARCH_BCM283X
help
Some architectures can not DMA above 4 GiB boundary,
limit available memory to memory below 4 GiB boundary.
config PHANDLE_CHECK_SEQ
bool "Enable phandle check while getting sequence number"
help