Djam/u-boot
1
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2025-05-08 19:11:53 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

mips: add support to restore exception vector base before booting linux

Browse source 
In U-Boot the exception vector base will be moved to top of memory, to be
used to display register dump when exception occurs.

But some old linux kernel does not honor the base set in CP0_EBASE. A
modified exception vector base will cause kernel crash.

This patch adds an option to enable reset exception vector base to its
previous value, or a user configured value before booting linux kernel.

Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
This commit is contained in:
Weijie Gao 2020-04-21 09:28:25 +02:00 • committed by Daniel Schwierzeck
parent 56ed625ba2
commit 71059736b8
4 changed files with 54 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
arch/mips/include/asm/u-boot-mips.h
View file

@ -9,4 +9,6 @@ void except_vec_ejtag_debug(void);
int arch_misc_init(void);
void trap_restore(void);
#endif /* _U_BOOT_MIPS_H_ */