From 574b9a04abfc68c41c3915c2eba2767b78e3e923 Mon Sep 17 00:00:00 2001 From: Jiaxun Yang Date: Thu, 7 Nov 2019 12:01:17 +0800 Subject: MIPS: Loongson2ef: Convert to early_printk_8250 early_printk.c is doing the same with early_printk_8250. Remove duplicated code. Signed-off-by: Jiaxun Yang Signed-off-by: Paul Burton Cc: linux-mips@vger.kernel.org Cc: chenhe@lemote.com --- arch/mips/include/asm/mach-loongson2ef/loongson.h | 1 - arch/mips/loongson2ef/Kconfig | 2 ++ arch/mips/loongson2ef/common/Makefile | 1 - arch/mips/loongson2ef/common/early_printk.c | 38 ----------------------- arch/mips/loongson2ef/common/init.c | 1 - arch/mips/loongson2ef/common/uart_base.c | 2 ++ 6 files changed, 4 insertions(+), 41 deletions(-) delete mode 100644 arch/mips/loongson2ef/common/early_printk.c diff --git a/arch/mips/include/asm/mach-loongson2ef/loongson.h b/arch/mips/include/asm/mach-loongson2ef/loongson.h index 622456539add..5008af0a1a19 100644 --- a/arch/mips/include/asm/mach-loongson2ef/loongson.h +++ b/arch/mips/include/asm/mach-loongson2ef/loongson.h @@ -21,7 +21,6 @@ extern void mach_prepare_shutdown(void); /* environment arguments from bootloader */ extern u32 cpu_clock_freq; extern u32 memsize, highmemsize; -extern const struct plat_smp_ops loongson3_smp_ops; /* loongson-specific command line, env and memory initialization */ extern void __init prom_init_memory(void); diff --git a/arch/mips/loongson2ef/Kconfig b/arch/mips/loongson2ef/Kconfig index 66a584a833e5..595dd48e1e4d 100644 --- a/arch/mips/loongson2ef/Kconfig +++ b/arch/mips/loongson2ef/Kconfig @@ -23,6 +23,7 @@ config LEMOTE_FULOONG2E select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_HIGHMEM select SYS_HAS_EARLY_PRINTK + select USE_GENERIC_EARLY_PRINTK_8250 select GENERIC_ISA_DMA_SUPPORT_BROKEN select CPU_HAS_WB select LOONGSON_MC146818 @@ -52,6 +53,7 @@ config LEMOTE_MACH2F select ISA select SYS_HAS_CPU_LOONGSON2F select SYS_HAS_EARLY_PRINTK + select USE_GENERIC_EARLY_PRINTK_8250 select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_HIGHMEM select SYS_SUPPORTS_LITTLE_ENDIAN diff --git a/arch/mips/loongson2ef/common/Makefile b/arch/mips/loongson2ef/common/Makefile index 10dd009a20a0..d5ab3e543ea3 100644 --- a/arch/mips/loongson2ef/common/Makefile +++ b/arch/mips/loongson2ef/common/Makefile @@ -10,7 +10,6 @@ obj-$(CONFIG_PCI) += pci.o # # Serial port support # -obj-$(CONFIG_EARLY_PRINTK) += early_printk.o obj-$(CONFIG_LOONGSON_UART_BASE) += uart_base.o obj-$(CONFIG_LOONGSON_MC146818) += rtc.o diff --git a/arch/mips/loongson2ef/common/early_printk.c b/arch/mips/loongson2ef/common/early_printk.c deleted file mode 100644 index d90c5e5a0e78..000000000000 --- a/arch/mips/loongson2ef/common/early_printk.c +++ /dev/null @@ -1,38 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* early printk support - * - * Copyright (c) 2009 Philippe Vachon - * Copyright (c) 2009 Lemote Inc. - * Author: Wu Zhangjin, wuzhangjin@gmail.com - */ -#include -#include - -#include - -#define PORT(base, offset) (u8 *)(base + offset) - -static inline unsigned int serial_in(unsigned char *base, int offset) -{ - return readb(PORT(base, offset)); -} - -static inline void serial_out(unsigned char *base, int offset, int value) -{ - writeb(value, PORT(base, offset)); -} - -void prom_putchar(char c) -{ - int timeout; - unsigned char *uart_base; - - uart_base = (unsigned char *)_loongson_uart_base; - timeout = 1024; - - while (((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0) && - (timeout-- > 0)) - ; - - serial_out(uart_base, UART_TX, c); -} diff --git a/arch/mips/loongson2ef/common/init.c b/arch/mips/loongson2ef/common/init.c index dab3ffda8b14..45512178be77 100644 --- a/arch/mips/loongson2ef/common/init.c +++ b/arch/mips/loongson2ef/common/init.c @@ -44,7 +44,6 @@ void __init prom_init(void) /*init the uart base address */ prom_init_uart_base(); - register_smp_ops(&loongson3_smp_ops); board_nmi_handler_setup = mips_nmi_setup; } diff --git a/arch/mips/loongson2ef/common/uart_base.c b/arch/mips/loongson2ef/common/uart_base.c index bbfe1095a843..522bea6ad7b0 100644 --- a/arch/mips/loongson2ef/common/uart_base.c +++ b/arch/mips/loongson2ef/common/uart_base.c @@ -6,6 +6,7 @@ #include #include +#include #include @@ -38,4 +39,5 @@ void prom_init_loongson_uart_base(void) } _loongson_uart_base = TO_UNCAC(loongson_uart_base); + setup_8250_early_printk_port(_loongson_uart_base, 0, 1024); } -- cgit v1.2.3