diff options
| author | Wu Zhangjin <wuzhangjin@gmail.com> | 2009-07-02 23:27:12 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-09-17 20:07:47 +0200 |
| commit | 3209e70e5ed1821be8d9b87fe9e8bd6cffa4b4c7 (patch) | |
| tree | 21eb5afbdd2d1568dfb0a4d117b5267de6786b3d /arch/mips/loongson/common | |
| parent | 85749d24bcf90440b10394312e5b1c96d1a62cdb (diff) | |
MIPS: Loongson: Add a machtype kernel command line argument
The difference between some loongson-based machines is very small, so, if
there is no necessary to add new kernel config options to cope with this
difference, it will be better to share the same kernel image file between
them, benefit from this, the linux distribution developers only have a need
to compile the kernel one time.
This machtype kernel command line argument will be used later to share the
same kernel image file between two different machines(menglong & yeeloong)
made by lemote.
Thanks very much to Zhang Le for cleaning up the machtype implementation.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/loongson/common')
| -rw-r--r-- | arch/mips/loongson/common/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/loongson/common/machtype.c | 35 |
2 files changed, 35 insertions, 2 deletions
diff --git a/arch/mips/loongson/common/Makefile b/arch/mips/loongson/common/Makefile index 4e3889dec39..656b3cc0a2a 100644 --- a/arch/mips/loongson/common/Makefile +++ b/arch/mips/loongson/common/Makefile @@ -3,7 +3,7 @@ # obj-y += setup.o init.o cmdline.o env.o time.o reset.o irq.o \ - pci.o bonito-irq.o mem.o + pci.o bonito-irq.o mem.o machtype.o # # Early printk support diff --git a/arch/mips/loongson/common/machtype.c b/arch/mips/loongson/common/machtype.c index 845b3fb47e0..7b348248de7 100644 --- a/arch/mips/loongson/common/machtype.c +++ b/arch/mips/loongson/common/machtype.c @@ -2,16 +2,49 @@ * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology * Author: Wu Zhangjin, wuzj@lemote.com * + * Copyright (c) 2009 Zhang Le <r0bertz@gentoo.org> + * * 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. */ +#include <linux/errno.h> +#include <asm/bootinfo.h> +#include <loongson.h> #include <machine.h> +static const char *system_types[] = { + [MACH_LOONGSON_UNKNOWN] "unknown loongson machine", + [MACH_LEMOTE_FL2E] "lemote-fuloong-2e-box", + [MACH_LEMOTE_FL2F] "lemote-fuloong-2f-box", + [MACH_LEMOTE_ML2F7] "lemote-mengloong-2f-7inches", + [MACH_LEMOTE_YL2F89] "lemote-yeeloong-2f-8.9inches", + [MACH_DEXXON_GDIUM2F10] "dexxon-gidum-2f-10inches", + [MACH_LOONGSON_END] NULL, +}; + const char *get_system_type(void) { - return LOONGSON_MACHNAME; + if (mips_machtype == MACH_UNKNOWN) + mips_machtype = LOONGSON_MACHTYPE; + + return system_types[mips_machtype]; } +static __init int machtype_setup(char *str) +{ + int machtype = MACH_LEMOTE_FL2E; + + if (!str) + return -EINVAL; + + for (; system_types[machtype]; machtype++) + if (strstr(system_types[machtype], str)) { + mips_machtype = machtype; + break; + } + return 0; +} +__setup("machtype=", machtype_setup); |