在我的摩托罗拉手机发送
李晖 <lihui205...@gmail.com>编写：
good, hanhua send me a mail declare that he has made a patch for
linux-2.6.27.1 to support it for 32 bit loongson, I will pull the
repository out and patch it, then try it if it works for me.
Thanks all, I will feed back then.
On 12月23日, 上午10时16分, zhangfx
wrote:
> 64bit kernel can support 32 bit userland, just be sure to select o32 support in kernel configuration. Default os uses 64bit kernel and 32bit userland
> 李晖 编写：
> thanks for reply, what I am going to do is patching the linux kernel to fit it to 64bit, what I am wandering is if the kernel is 64bit, should the android file system to be 64bit, or 32bit is ok? On 12月22日, 上午11时26分, zhangfx wrote: > 于 2011-12-22 9:45, 晏华 写道: > > > In 32 bit mode, the pci window of loongson2F is too small for some > > devices such as sis315 > > driver. The sis315 claims 128MB pci memory, while loongson2f has only > > 128M(another 64MB is reserved for legacy use)。 Besides the sis315 > > graphics devies, still some other pci devices need pci resources. If > > you does not carefully to assign these resources. the kernel would > > just report resource allocation failed. > > To resolve this problems in 32bit mode of loongson2f desktop box. > > there are some advices. > > 1. Let PMON do the resource assignment, and kernel just use it. > > 2. use pci high mem (please ref loongson 2f usermanual)just as 64bit > > kenel, and you need to modify kenrel code, use tlb to map sothing. > > I think we should have a working kernel for fuloong that can be compiled > in 32bit? For example, is this one（http://dev.lemote.com/code > /linux_loongson）ok？ Requiring too much knowledge just for a working > kernel is not a good thing. Loongson development should not be so hard > nowadays. > If not, we can just fix it. > > Or the community kernel? Wu zhangjin paid lots of effort to make a > uniform kernel that working for almost all lemote machines(the one > availabe inhttp://dev.lemote.com/trac/linux-loongson-community), not > sure about 32bit configurations(due to the memory limits, it is rarely > used). > > By the way, 64bit kernel can work with android with some patches. > > > > > > > > > > > 2011/12/22 李晖 > > > > Hi, all > > I am porting android to loongson2f, I use "Gcc 4.4.1 + Binutils > > 2.20 on X86" from loongson community compile 2.6.35 linux kernel, by > > setting the kernel model to 64bit, I got the vmlinux image, and it can > > boot up, but some drivers of the kernel are 32bit only(google android > > related), so android can not boot up eventually, so I changed the > > kernel mode to 32bit and did not change other config and rebuild the > > kernel again, the vmlinux can be generated, but when I load and boot > > it by using pmon, the kernel can not boot, the pmon print register > > information and no further information on the screen. > > By adding printk at the begin of start_kernel function, I found it > > even not reached that point! > > > The machine I am using is a loongson2f desktop computer, and I found > > that those who claims had succeeded port android to loongson2f all > > uses loongson2f mini notebook, did it effect? > > > andy tips or suggestion will be greatly appreciated! > > > -- > > You received this message because you are subscribed to the Google > > Groups "loongson-dev" group. > > To post to this group, send email to loongson-dev@googlegroups.com > > . > > To unsubscribe from this group, send email to > > loongson-dev+unsubscr...@googlegroups.com > > . > > For more options, visit this group at > > http://groups.google.com/group/loongson-dev?hl=en. > > > -- > > 晏华 > > 龙芯梦兰 软件部 > > -- > > You received this message because you are subscribed to the Google > > Groups "loongson-dev" group. > > To post to this group, send email to loongson-dev@googlegroups.com. > > To unsubscribe from this group, send email to > > loongson-dev+unsubscr...@googlegroups.com. > > For more options, visit this group at > >http://groups.google.com/group/loongson-dev?hl=en. -- You received this message because you are subscribed to the Google Groups "loongson-dev" group. To post to this group, send email to loongson-dev@googlegroups.com. To unsubscribe from this group, send email to loongson-dev+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/loongson-dev?hl=en.
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