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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2016-07-24 09:27:09 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2016-08-22 15:26:51 +1000 |
| commit | f3ebe66f015e04a2e3a4414d24b3dba90ad3b893 (patch) | |
| tree | 97a8ef39592773765faee432ca74c4bee9eb8507 /asm/head.S | |
| parent | 2ff996194673daf1eee00814c69f588eefb85ef1 (diff) | |
| download | talos-skiboot-f3ebe66f015e04a2e3a4414d24b3dba90ad3b893.tar.gz talos-skiboot-f3ebe66f015e04a2e3a4414d24b3dba90ad3b893.zip | |
main: Copy all exception vectors down
If we aren't loaded at 0 before relocation, we have no exception
handlers. This is annoying when debugging, but will be deadly
when we start using NAP mode which wakes up via the system reset
interrupt at 0x100.
So instead, let's copy the whole vectors block down. We are careful
to avoid 0..0x100 since that contains the boot flags which are
still "hot" as secondaries might still be entering skiboot.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'asm/head.S')
| -rw-r--r-- | asm/head.S | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -95,6 +95,11 @@ attn_trigger: hir_trigger: .long 0 + /* + * At 0x100 and 0x180 reside our entry points. Once started, + * we will ovewrite them with our actual 0x100 exception handler + * used for recovering from rvw or nap mode + */ . = 0x100 /* BML entry, load up r3 with device tree location */ li %r3, 0 |
