diff options
Diffstat (limited to 'bl2/aarch64/bl2_entrypoint.S')
| -rw-r--r-- | bl2/aarch64/bl2_entrypoint.S | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/bl2/aarch64/bl2_entrypoint.S b/bl2/aarch64/bl2_entrypoint.S index 987d30e0..1d262297 100644 --- a/bl2/aarch64/bl2_entrypoint.S +++ b/bl2/aarch64/bl2_entrypoint.S @@ -82,6 +82,20 @@ func bl2_entrypoint b.ne _panic /* --------------------------------------------- + * Invalidate the RW memory used by the BL2 + * image. This includes the data and NOBITS + * sections. This is done to safeguard against + * possible corruption of this memory by dirty + * cache lines in a system cache as a result of + * use by an earlier boot loader stage. + * --------------------------------------------- + */ + adr x0, __RW_START__ + adr x1, __RW_END__ + sub x1, x1, x0 + bl inv_dcache_range + + /* --------------------------------------------- * Zero out NOBITS sections. There are 2 of them: * - the .bss section; * - the coherent memory section. |