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| author | Michal Simek <michal.simek@xilinx.com> | 2013-08-23 07:16:50 +0200 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2014-01-27 11:26:32 +0100 |
| commit | 34b9c07a3b644760159571ee99d0f7fc67b83a8d (patch) | |
| tree | 2902a75c08c09fba499e7307bd0ff7aa56432189 | |
| parent | microblaze: Define read/write{b,w,l}_relaxed MMIO (diff) | |
| download | linux-34b9c07a3b644760159571ee99d0f7fc67b83a8d.tar.xz linux-34b9c07a3b644760159571ee99d0f7fc67b83a8d.zip | |
microblaze: Disable stack protection from bootloader
Microblaze without MMU can use stack protection in bootloader
and kernel should clear this setting ASAP.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| -rw-r--r-- | arch/microblaze/kernel/head.S | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S index 817b7eec95b6..b7fb0438458c 100644 --- a/arch/microblaze/kernel/head.S +++ b/arch/microblaze/kernel/head.S @@ -64,6 +64,10 @@ real_start: #endif mts rmsr, r0 +/* Disable stack protection from bootloader */ + mts rslr, r0 + addi r8, r0, 0xFFFFFFF + mts rshr, r8 /* * According to Xilinx, msrclr instruction behaves like 'mfs rX,rpc' * if the msrclr instruction is not enabled. We use this to detect |