diff mbox series

[4/5] MIPS: Loongson2ef: Convert to early_printk_8250

Message ID 20191107040118.10685-5-jiaxun.yang@flygoat.com (mailing list archive)
State Mainlined
Commit 574b9a04abfc68c41c3915c2eba2767b78e3e923
Delegated to: Paul Burton
Headers show
Series Loongson cleanups | expand

Commit Message

Jiaxun Yang Nov. 7, 2019, 4:01 a.m. UTC 
early_printk.c is doing the same with early_printk_8250.
Remove duplicated code.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 .../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 mbox series

Patch

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 <philippe@cowpig.ca>
- *  Copyright (c) 2009 Lemote Inc.
- *  Author: Wu Zhangjin, wuzhangjin@gmail.com
- */
-#include <linux/serial_reg.h>
-#include <asm/setup.h>
-
-#include <loongson.h>
-
-#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 <linux/export.h>
 #include <asm/bootinfo.h>
+#include <asm/setup.h>
 
 #include <loongson.h>
 
@@ -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);
 }