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 <[email protected]> --- Changelog: v2: * Added a license header to uart-prom.c --- arch/mips/Kconfig | 4 ++++ arch/mips/boot/compressed/Makefile | 1 + arch/mips/boot/compressed/uart-prom.c | 20 ++++++++++++++++++++ 3 files changed, 25 insertions(+) create mode 100644 arch/mips/boot/compressed/uart-prom.c diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 71683a8..ef1d665 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1756,6 +1756,10 @@ config SYS_SUPPORTS_ZBOOT_UART16550 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 diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile index 2d5d97f..309d2ad 100644 --- a/arch/mips/boot/compressed/Makefile +++ b/arch/mips/boot/compressed/Makefile @@ -35,6 +35,7 @@ vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o ifdef CONFIG_DEBUG_ZBOOT vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o +vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o endif diff --git a/arch/mips/boot/compressed/uart-prom.c b/arch/mips/boot/compressed/uart-prom.c new file mode 100644 index 0000000..9d8740c --- /dev/null +++ b/arch/mips/boot/compressed/uart-prom.c @@ -0,0 +1,20 @@ +/* + * Copyright (C) 2015 Alban Bedel <[email protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +extern void prom_putchar(unsigned char ch); + +void putc(char c) +{ + prom_putchar(c); +} -- 2.0.0
