[PATCH 2/4] ARM: Alpine: early-debug print support

Tsahee Zidenberg
2015-01-25T18:30:52Z

Alpine platform includes UART8250 that can be used for early prints.

Signed-off-by: Saeed Bishara <saeed@annapurnalabs.com>
Signed-off-by: Tsahee Zidenberg <tsahee@annapurnalabs.com>
---
arch/arm/Kconfig.debug | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 5ddd490..db6c389 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -1031,6 +1031,14 @@ choice
This option selects UART0 on VIA/Wondermedia System-on-a-chip
devices, including VT8500, WM8505, WM8650 and WM8850.

+ config DEBUG_ALPINE_UART0
+ bool "Kernel low-level debugging messages via Alpine UART0"
+ depends on ARCH_ALPINE
+ select DEBUG_UART_8250
+ help
+ Say Y here if you want kernel low-level debugging support
+ on Alpine based platforms.
+
config DEBUG_LL_UART_NONE
bool "No low-level debugging UART"
depends on !ARCH_MULTIPLATFORM
@@ -1312,6 +1320,7 @@ config DEBUG_UART_PHYS
default 0xfff36000 if DEBUG_HIGHBANK_UART
default 0xfffe8600 if DEBUG_UART_BCM63XX
default 0xfffff700 if ARCH_IOP33X
+ default 0xfd883000 if DEBUG_ALPINE_UART0
depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
DEBUG_LL_UART_EFM32 || \
DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
@@ -1394,6 +1403,7 @@ config DEBUG_UART_VIRT
default 0xfef36000 if DEBUG_HIGHBANK_UART
default 0xfefff700 if ARCH_IOP33X
default 0xff003000 if DEBUG_U300_UART
+ default 0xfd883000 if DEBUG_ALPINE_UART0
default DEBUG_UART_PHYS if !MMU
depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
@@ -1411,7 +1421,7 @@ config DEBUG_UART_8250_WORD
depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250
depends on DEBUG_UART_8250_SHIFT >= 2
default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \
- ARCH_KEYSTONE || \
+ ARCH_KEYSTONE || DEBUG_ALPINE_UART0 || \
DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \
DEBUG_DAVINCI_DA8XX_UART2 || \
DEBUG_BCM_KONA_UART || DEBUG_RK32_UART2 || \
--
1.9.1