diff options
Diffstat (limited to 'arch/mips/cpu/start.S')
| -rw-r--r-- | arch/mips/cpu/start.S | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/mips/cpu/start.S b/arch/mips/cpu/start.S index d0c412236d..335aafa6a8 100644 --- a/arch/mips/cpu/start.S +++ b/arch/mips/cpu/start.S @@ -74,9 +74,14 @@ .endm ENTRY(_start) - /* U-Boot entry point */ + /* + * U-Boot entry point. + * Do not add instructions to the branch delay slot! Some SoC's + * like Octeon might patch the final U-Boot binary at this location + * with additional boot headers. + */ b reset - mtc0 zero, CP0_COUNT # clear cp0 count for most accurate boot timing + nop #if defined(CONFIG_MIPS_INSERT_BOOT_CONFIG) /* @@ -123,6 +128,7 @@ ENTRY(_start) #endif reset: + mtc0 zero, CP0_COUNT # clear cp0 count for most accurate boot timing #if __mips_isa_rev >= 6 mfc0 t0, CP0_CONFIG, 5 and t0, t0, MIPS_CONF5_VP |