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* MIPS: Loongson 2F: Fix of problems introduced by -mfix-loongson2f-jumpWu Zhangjin2010-04-301-1/+19
| | | | | | | | | | | | | | | | | | | | | | The -mfix-loongson2f-jump option provided by latest CVS binutils have fixed the out-of-order issue of Loongson-2F described in chapter 15 of the Loongson2F User Manual [1, 2], but introduced some problems. The option changes all of the jump target to "addr & 0xcfffffff" through the at($1) register, but for the reboot address of Loongson 2F 0xbfc00000 this is wrong. Avoids the problem via telling the assembler to not use the $at register. [1] Loongson2F User Manual (Chinese Version) http://www.loongson.cn/uploadfile/file/200808211 [2] English Version of Chapter 15: http://groups.google.com.hk/group/loongson-dev/msg/e0d2e220958f10a6?dmode=source Reported-and-tested-by: Liu Shiwei <liushiwei@gmail.com> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips <linux-mips@linux-mips.org> Patchwork: http://patchwork.linux-mips.org/patch/1109/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Loongson: Cleanup the halt and poweroff actionWu Zhangjin2010-02-271-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | In the old source code, I have let halt and poweroff do the same action, but in reality, they have different meanings. As the manpage of shutdown shows: -r Reboot after shutdown. -H Halt action is to halt or drop into boot monitor on systems that support it. -P Halt action is to turn off the power. and in the real world, some machines(e.g. NAS) did not provide a power button and the shutdown works as reset, so, we need to provide a mechanism to let the users turn off the power safely without breaking the system, such a mechanism is "halt", which only put the system into a dead loop or a power-save mode and print some information to the screen to tell the users to turn off the power safely. $ shutdown -hH now /* loongson_halt, not turn off the power */ $ shutdown -hP now /* loongson_poweroff, work as poweroff */ Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Tested-by: Liu Shiwei <liushiwei@gmail.com> Cc: Liu Shiwei <liushiwei@gmail.com> Cc: linux-mips <linux-mips@linux-mips.org> Patchwork: http://patchwork.linux-mips.org/patch/883/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Loongson: Change the Email address of Wu ZhangjinWu Zhangjin2010-02-271-1/+1
| | | | | | | | | | | | Currently wuzj@lemote.com is not usable; change it to wuzhangjin@gmail.com. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: yanh@lemote.com Cc: huhb@lemote.com Cc: zhangfx@lemote.com Patchwork: http://patchwork.linux-mips.org/patch/829/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Loongson: Convert loongson_halt() to use unreachable()Wu Zhangjin2010-02-271-3/+2
| | | | | | | | | | | | Use the new unreachable() macro instead of while(1); Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: yanh@lemote.com Cc: huhb@lemote.com Cc: zhangfx@lemote.com Patchwork: http://patchwork.linux-mips.org/patch/823/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Bonito64: Make Loongson independent from Bonito64 code.Wu Zhangjin2009-12-171-1/+1
| | | | | | | | | | | | | | | | | | The built-in Loongson 2E/2F northbridge in is bonito64-compatible but not identical with it. To avoid influencing the original bonito64 support and make the loongson support more maintainable, it's better to separate the Bonito64 code from the Loongson code. This also prepares the kernel for the coming Loongson 2f machines family support. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Cc: yanh@lemote.com Cc: huhb@lemote.com Cc: Zhang Le <r0bertz@gentoo.org> Cc: zhangfx@lemote.com, Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* MIPS: Loongson: Split common loongson source code outWu Zhangjin2009-09-171-0/+44
To share common loongson source code between all of the loongson-based machines. there is a need to split it out of the fuloong-2e/ directory. at the same time, other according tuning is needed. the machine-specific parts are defined as macros in relative header file, pci.h, mem.h, machine.h. Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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