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MIPS: Loongson: Cleanup the serial port support

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To share the same kernel image amon different machines we have added the
machtype command line support.

In the old serial port implementation the UART base address is hardcoded as
a macro in machine.h which breaks with machtype, so change that to discover
the address dynamically.  Also move the initialization of the UART base
address to uart_base.c to avoid remapping twice for early_printk.c and
serial.c.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/581/
Patchwork: http://patchwork.linux-mips.org/patch/682/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Wu Zhangjin
2009-11-06 18:35:34 +08:00
committed by Ralf Baechle
parent 04cfb90a92
commit a3ed495190
7 changed files with 60 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/mips/include/asm/mach-loongson/loongson.h
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@ -31,6 +31,9 @@ extern void __init prom_init_memory(void);
extern void __init prom_init_cmdline(void);
extern void __init prom_init_machtype(void);
extern void __init prom_init_env(void);
extern unsigned long _loongson_uart_base;
extern unsigned long uart8250_base[];
extern void prom_init_uart_base(void);
/* irq operation functions */
extern void bonito_irqdispatch(void);

2
arch/mips/include/asm/mach-loongson/machine.h
View File

@ -13,8 +13,6 @@
#ifdef CONFIG_LEMOTE_FULOONG2E
#define LOONGSON_UART_BASE (LOONGSON_PCIIO_BASE + 0x3f8)
#define LOONGSON_MACHTYPE MACH_LEMOTE_FL2E
#endif