Am 13.02.20 um 07:04 schrieb Stefan Roese:
It has been noticed on MT7628/88 platforms, that booting the RAM image does not work reliably. Sometimes it works and sometimes not. Debugging showed that this "might" be a cache related issue as very strange errors occurred (e.g. output corrupted etc).
This patch adds a cache flush for the complete SDRAM area to the go cmd before jumping to the entry point for the MIPS architecture. The complete area is flushed as we don't know at this point, how big the area of the "application" really is.
Signed-off-by: Stefan Roese sr@denx.de Reviewed-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com Tested-by: Mauro Condarelli mc5686@mclink.it Cc: Daniel Schwierzeck daniel.schwierzeck@gmail.com Cc: Mauro Condarelli mc5686@mclink.it Cc: Weijie Gao weijie.gao@mediatek.com
v3:
- Use gd->ram_top instead of gd->bd->bi_memsize for memory size calculation as suggested by Daniel
v2:
- Moved cache flush into weak do_go_exec() to make this changed mips only
arch/mips/lib/Makefile | 1 + arch/mips/lib/boot.c | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+) create mode 100644 arch/mips/lib/boot.c
applied to u-boot-mips/next, thanks.