diff options
| author | Simon Glass <sjg@chromium.org> | 2015-02-07 10:47:28 -0700 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-02-16 20:14:54 +0100 |
| commit | e11c6c279d823dc0d2f470c5c2e3c0a9854a640f (patch) | |
| tree | 31ae3d1bd015ec97d889ad6dc45baf5e1e127913 /arch/arm/cpu/armv7/start.S | |
| parent | c924e2a8036f43f2f4a8e829ecfc8e9d6e8cce63 (diff) | |
arm: Allow lr to be saved by board code
The link register value can be required on some boards (e.g. FEL mode on
sunxi) so use a branch instruction to jump to save_boot_params() instead
of a branch link.
This requires a branch back to save_boot_params_ret so adjust the users
to deal with this. For exynos just drop the function since it doesn't
do anything.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'arch/arm/cpu/armv7/start.S')
| -rw-r--r-- | arch/arm/cpu/armv7/start.S | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index 70048c10ae..9b49ece2d6 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -31,9 +31,12 @@ *************************************************************************/ .globl reset + .globl save_boot_params_ret reset: - bl save_boot_params + /* Allow the board to save important registers */ + b save_boot_params +save_boot_params_ret: /* * disable interrupts (FIQ and IRQ), also set the cpu to SVC32 mode, * except if in HYP mode already @@ -96,7 +99,7 @@ ENDPROC(c_runtime_cpu_setup) * *************************************************************************/ ENTRY(save_boot_params) - bx lr @ back to my caller + b save_boot_params_ret @ back to my caller ENDPROC(save_boot_params) .weak save_boot_params |