ARM: mvebu: Add UART1 as DEBUG_LL possible target

Some mvebu boards have the UART1 more easily accessible than the other UARTs
found on the system.

Add a debug_ll option for this case.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>

1 files changed, 17 insertions, 0 deletions

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index eb3991cf63ab..7bd1bbccc43c 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -489,6 +489,21 @@ choice
                   when u-boot hands over to the kernel, the system
                   silently crashes, with no serial output at all.
 
+        config DEBUG_MVEBU_UART1_ALTERNATE
+                bool "Kernel low-level debugging messages via MVEBU UART1 (new bootloaders)"
+                depends on ARCH_MVEBU
+                select DEBUG_UART_8250
+                help
+                  Say Y here if you want kernel low-level debugging support
+                  on MVEBU based platforms on UART1.
+
+                  This option should be used with the new bootloaders
+                  that remap the internal registers at 0xf1000000.
+
+                  If the wrong DEBUG_MVEBU_UART* option is selected,
+                  when u-boot hands over to the kernel, the system
+                  silently crashes, with no serial output at all.
+
         config DEBUG_VF_UART
                 bool "Vybrid UART"
                 depends on SOC_VF610
@@ -1297,6 +1312,7 @@ config DEBUG_UART_PHYS
         default 0xf0000be0 if ARCH_EBSA110
         default 0xf040ab00 if DEBUG_BRCMSTB_UART
         default 0xf1012000 if DEBUG_MVEBU_UART0_ALTERNATE
+        default 0xf1012100 if DEBUG_MVEBU_UART1_ALTERNATE
         default 0xf1012000 if ARCH_DOVE || ARCH_MV78XX0 || \
                                 ARCH_ORION5X
         default 0xf7fc9000 if DEBUG_BERLIN_UART
@@ -1378,6 +1394,7 @@ config DEBUG_UART_VIRT
         default 0xfeb31000 if DEBUG_KEYSTONE_UART1
         default 0xfec02000 if DEBUG_SOCFPGA_UART
         default 0xfec12000 if DEBUG_MVEBU_UART0 || DEBUG_MVEBU_UART0_ALTERNATE
+        default 0xfec12100 if DEBUG_MVEBU_UART1_ALTERNATE
         default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0
         default 0xfec90000 if DEBUG_RK32_UART2
         default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1