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 <zhan...@lemote.com> 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 <lihui205...@gmail.com>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. -- 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.
