Save boot arguments r[0-3] into an array for handover of bloblist from previous boot stage.
Signed-off-by: Raymond Mao raymond.mao@linaro.org --- Changes in v2 - New patch file created for v2. Changes in v3 - Swap value of r0 with r2.
arch/arm/cpu/armv7/start.S | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index 69e281b086..2ca63ca32c 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -152,9 +152,22 @@ ENDPROC(c_runtime_cpu_setup) * *************************************************************************/ WEAK(save_boot_params) +#if (IS_ENABLED(CONFIG_OF_BOARD) && IS_ENABLED(CONFIG_BLOBLIST)) + ldr r12, =saved_args + /* Intentionally swapping r0 with r2 */ + stm r12, {r2, r1, r0, r3} +#endif b save_boot_params_ret @ back to my caller ENDPROC(save_boot_params)
+.section .data +.global saved_args +saved_args: + .rept 4 + .word 0 + .endr +END(saved_args) + #ifdef CONFIG_ARMV7_LPAE WEAK(switch_to_hypervisor) b switch_to_hypervisor_ret