[PATCH] ARM: rdu2: Initialize DEBUG_LL in entry function

Andrey Smirnov andrew.smirnov at gmail.com
Mon Jun 3 12:28:57 PDT 2019


When bootstrapping Barebox via JTAG rdu2_sram_setup() won't be
executed resulting in non functional DEBUG_LL API. Move low-level UART
initialization code to be a part of start_imx6_zii_rdu2() to avoid
that problem.

Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
---
 arch/arm/boards/zii-imx6q-rdu2/lowlevel.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boards/zii-imx6q-rdu2/lowlevel.c b/arch/arm/boards/zii-imx6q-rdu2/lowlevel.c
index a5ac6f64c..9672a69bf 100644
--- a/arch/arm/boards/zii-imx6q-rdu2/lowlevel.c
+++ b/arch/arm/boards/zii-imx6q-rdu2/lowlevel.c
@@ -271,11 +271,6 @@ static noinline void rdu2_sram_setup(void)
 	enum bootsource bootsrc;
 	int instance;
 
-	imx6_ungate_all_peripherals();
-
-	if (IS_ENABLED(CONFIG_DEBUG_LL))
-		setup_uart();
-
 	arm_setup_stack(0x00920000 - 8);
 	relocate_to_current_adr();
 	setup_c();
@@ -296,6 +291,11 @@ ENTRY_FUNCTION(start_imx6_zii_rdu2, r0, r1, r2)
 {
 	imx6_cpu_lowlevel_init();
 
+	imx6_ungate_all_peripherals();
+
+	if (IS_ENABLED(CONFIG_DEBUG_LL))
+		setup_uart();
+
 	/*
 	 * When still running in SRAM, we need to setup the DRAM now and load
 	 * the remaining image.
-- 
2.21.0




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