path: root/arch/arm/cpu/armv7/start.S
diff options
authorSimon Glass <>2015-02-07 10:47:28 -0700
committerHans de Goede <>2015-02-16 20:14:54 +0100
commite11c6c279d823dc0d2f470c5c2e3c0a9854a640f (patch)
tree31ae3d1bd015ec97d889ad6dc45baf5e1e127913 /arch/arm/cpu/armv7/start.S
parentc924e2a8036f43f2f4a8e829ecfc8e9d6e8cce63 (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 <> Acked-by: Siarhei Siamashka <> Acked-by: Hans de Goede <> Signed-off-by: Hans de Goede <>
Diffstat (limited to 'arch/arm/cpu/armv7/start.S')
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
- bl save_boot_params
+ /* Allow the board to save important registers */
+ b save_boot_params
* 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)
- bx lr @ back to my caller
+ b save_boot_params_ret @ back to my caller
.weak save_boot_params
OpenPOWER on IntegriCloud