diff options
| author | Achin Gupta <achin.gupta@arm.com> | 2014-01-18 16:50:09 +0000 |
|---|---|---|
| committer | Dan Handley <dan.handley@arm.com> | 2014-02-17 18:51:44 +0000 |
| commit | b739f22a99c96d5a295f083125505b5b5ec2f8b6 (patch) | |
| tree | faed79c3d8e505d3168aa0299aa68099cc3f4fe6 /bl1/aarch64/early_exceptions.S | |
| parent | 65f0730ba34d5e22d3372cef76f048339d9c4588 (diff) | |
Setup VBAR_EL3 incrementally
This patch ensures that VBAR_EL3 points to the simple stack-less
'early_exceptions' when the C runtime stack is not correctly setup to
use the more complex 'runtime_exceptions'. It is initialised to
'runtime_exceptions' once this is done.
This patch also moves all exception vectors into a '.vectors' section
and modifies linker scripts to place all such sections together. This
will minimize space wastage from alignment restrictions.
Change-Id: I8c3e596ea3412c8bd582af9e8d622bb1cb2e049d
Diffstat (limited to 'bl1/aarch64/early_exceptions.S')
| -rw-r--r-- | bl1/aarch64/early_exceptions.S | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/bl1/aarch64/early_exceptions.S b/bl1/aarch64/early_exceptions.S index ef47f9e..84bdae1 100644 --- a/bl1/aarch64/early_exceptions.S +++ b/bl1/aarch64/early_exceptions.S @@ -37,12 +37,12 @@ .globl early_exceptions .weak display_boot_progress - .section .text, "ax"; .align 11 + .section .vectors, "ax"; .align 11 /* ----------------------------------------------------- - * Very simple exception handlers used by BL1 and BL2. - * Apart from one SMC exception all other traps loop - * endlessly. + * Very simple stackless exception handlers used by all + * bootloader stages. BL31 uses them before stacks are + * setup. BL1/BL2 use them throughout. * ----------------------------------------------------- */ .align 7 @@ -164,6 +164,7 @@ SErrorA32: .align 7 + .section .text, "ax" process_exception: sub sp, sp, #0x40 stp x0, x1, [sp, #0x0] |