Add choice for low-level debug UART. Similar to i.MX6, there is a
numeric configuration, valid choices are 0 to 3.
Note that the kernel assumes that the boot loader initialized clock
properly.
Signed-off-by: Stefan Agner <ste...@agner.ch>
---
arch/arm/Kconfig.debug | 9 +++++++++
arch/arm/include/debug/vf.S | 15 +++++++++++++--
2 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 0531da8..c2005a7 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -946,6 +946,15 @@ config DEBUG_IMX_UART_PORT
Choose UART port on which kernel low-level debug messages
should be output.
+config DEBUG_VF_UART_PORT
+ int "Vybrid Debug UART Port Selection" if DEBUG_VF_UART
+ default 1
+ range 0 3
+ depends on SOC_VF610
+ help
+ Choose UART port on which kernel low-level debug messages
+ should be output.
+
config DEBUG_TEGRA_UART
bool
depends on ARCH_TEGRA
diff --git a/arch/arm/include/debug/vf.S b/arch/arm/include/debug/vf.S
index ba12cc4..b889338 100644
--- a/arch/arm/include/debug/vf.S
+++ b/arch/arm/include/debug/vf.S
@@ -7,9 +7,20 @@
*
*/
+#define VF_UART0_BASE_ADDR 0x40027000
+#define VF_UART1_BASE_ADDR 0x40028000
+#define VF_UART2_BASE_ADDR 0x40029000
+#define VF_UART3_BASE_ADDR 0x4002a000
+#define VF_UART_BASE_ADDR(n) VF_UART##n##_BASE_ADDR
+#define VF_UART_BASE(n) VF_UART_BASE_ADDR(n)
+#define VF_UART_PHYSICAL_BASE VF_UART_BASE(CONFIG_DEBUG_VF_UART_PORT)
+
+#define VF_UART_VIRTUAL_BASE 0xfe000000
+
.macro addruart, rp, rv, tmp
- ldr \rp, =0x40028000 @ physical
- ldr \rv, =0xfe028000 @ virtual
+ ldr \rp, =VF_UART_PHYSICAL_BASE @ physical
+ and \rv, \rp, #0xffffff @ offset within 16MB section
+ add \rv, \rv, #VF_UART_VIRTUAL_BASE
.endm
.macro senduart, rd, rx
--
1.9.0
--
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