Save boot arguments x[0-3] into an array for handover of bloblist from
previous boot stage.
Signed-off-by: Raymond Mao <raymond....@linaro.org>
---
Changes in v2
- New patch file created for v2.
Changes in V5
- Drop the dependence on OF_BOARD.
Changes in V7
- Exclude the saved_args when BLOBLIST is disabled.
arch/arm/cpu/armv8/start.S | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S
index 6cc1d26e5e..2a26b1c276 100644
--- a/arch/arm/cpu/armv8/start.S
+++ b/arch/arm/cpu/armv8/start.S
@@ -370,5 +370,21 @@ ENTRY(c_runtime_cpu_setup)
ENDPROC(c_runtime_cpu_setup)
WEAK(save_boot_params)
+#if (IS_ENABLED(CONFIG_BLOBLIST))
+ adr x9, saved_args
+ stp x0, x1, [x9]
+ /* Increment the address by 16 bytes for the next pair of values */
+ stp x2, x3, [x9, #16]
+#endif
b save_boot_params_ret /* back to my caller */
ENDPROC(save_boot_params)
+
+#if (IS_ENABLED(CONFIG_BLOBLIST))
+.section .data
+.global saved_args
+saved_args:
+ .rept 4
+ .xword 0
+ .endr
+END(saved_args)
+#endif
--
2.25.1
