MIPS: zboot: Add support for serial debug using the PROM
As most platforms implement the PROM serial interface prom_putchar()
add a simple bridge to allow re-using this code for zboot.
Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11811/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 058dfd2..178cf1fb 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1766,6 +1766,10 @@
bool
select SYS_SUPPORTS_ZBOOT
+config SYS_SUPPORTS_ZBOOT_UART_PROM
+ bool
+ select SYS_SUPPORTS_ZBOOT
+
config CPU_LOONGSON2
bool
select CPU_SUPPORTS_32BIT_KERNEL