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 in http://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 <lihui205...@gmail.com <mailto:lihui205...@gmail.com>> > > 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 > <mailto:loongson-dev@googlegroups.com>. > To unsubscribe from this group, send email to > loongson-dev+unsubscr...@googlegroups.com > <mailto:loongson-dev%2bunsubscr...@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.
