Very interesting reading. As I read this I think it's a bit risky to
have 2 filesystems coexisting. (and even after chrooting it wouldn't
init).
So I tried to boot only on the Android filesystem, but it won't boot,
hanging after :
FS: Mounted root (nfs
filesystem).
VFS: Mounted root (nfs
filesystem).
<6>Freeing init memory:
124K
Freeing init memory: 124K
This is why I wanted to mix my davinci fs which I can boot on and the
Android filesystem.
Any way to see what's going down there as the console doesn't display
any error message, debugging looks impossible.
Some possibles issues : i used arm-crosstool-linux-gnueabi toolchain
to build the Android source code and compile the kernel for my board,
gcc version is 4.1.0 (got some warnings during kernel compilation).
Francois Minaud
On Dec 11, 5:58 pm, Sean McNeil <[EMAIL PROTECTED]> wrote:
> Android uses a completely different linker/loader. You cannot run
> Android directly from your davinci filesystem. Very important shared
> libraries will not be in the correct place on the filesystem. Just
> changing env variables is not good enough. In this setup, you are going
> to have to use chroot:
>
> chroot /filesystem /init (or /sbin/init for me)
>
> Read up on chroot. It essentially will make /filesystem the / directory
> for whatever command you invoke.
>
> FrancoisM wrote:
> > Thanks for your reply. I am not sure I got what you mean.
>
> > I have a basic davinci filesystem in which i pasted the Android
> > filesystem ( davinci filesystem is / and Android fs is in /
> > filesystem/ ). I did that because if i directly boot the board with
> > the Android filesystem, I don't come up with anything but the
> > lowmem_shrink() display messages.
>
> > Is the missing libraries result from a linker problem? I am pretty
> > much a beginner and feel lost. Some more clues would be welcome.
>
> > Thanks a lot,
> > Francois Minaud
>
> > I tried the changes you suggested but pretty akwardly I guess as I
> > come up with the same strace result.
>
> > On Dec 11, 5:08 pm, Sean McNeil <[EMAIL PROTECTED]> wrote:
>
> >> I don't think it is going to work that way. You have a different
> >> linker/loader and all that which has to be in specific directories from
> >> root. I think you'll have to do a chroot. That is what I do:
>
> >> chroot /root /sbin/init
>
> >> (I've moved init to the more appropriate /sbin directory).
>
> >> Either that, or you'll have to mount your nfs as /.
>
> >> FrancoisM wrote:
>
> >>> Alright, I got some progress.
> >>> My previous error comes from my ... "wild" patching. Later I did it
> >>> again smoothly using Meld which is a software I recommend to all of
> >>> you guys.
>
> >>> So I got a kernel which boots and is supposed to work with my Android
> >>> filesystem, I work with NFS.
>
> >>> I could boot with a basic filesystem (I don't init Android on boot)
> >>> and when I try to launch "init" here is what I get :
>
> >>> my run.sh is :
> >>> #!/bin/sh
> >>> chmod 777 /filesys/data
> >>> /init
>
> >>> export PATH=sbin:/filesys/system/sbin:/filesys/system/bin:/filesys/
> >>> system/xbin
> >>> export LD_LIBRARY_PATH=/filesys/system/lib
> >>> export ANDROID_BOOTLOGO=1
> >>> export ANDROID_ROOT=/filesys/system
> >>> export ANDROID_ASSETS=/filesys/system/app
> >>> export ANDROID_DATA=/filesys/data
> >>> #export EXTERNAL_STORAGE /sdcard
> >>> export BOOTCLASSPATH=/filesys/system/framework/core.jar:/filesys/
> >>> system/framework/ext.jar:/filesys/system/framework/framework.jar:/
> >>> filesys/framework/android.policy.jar:/filesys/framework/services.jar
>
> >>> the strace is :
>
> >>> [EMAIL PROTECTED]:/filesys# strace -ff -F -s 200 ./run.sh
> >>> execve("./run.sh", ["./run.sh"], [/* 14 vars */]) = 0
> >>> uname({sys="Linux", node="davinci-francois", ...}) = 0
> >>> brk(0) = 0xab000
> >>> access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/etc/ld.so.cache", O_RDONLY) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/tls/v5l/fast-mult/half/libncurses.so.5", O_RDONLY) = -1
> >>> ENOENT (No such file or directory)
> >>> stat64("/lib/tls/v5l/fast-mult/half", 0xbeb6d1a8) = -1 ENOENT (No such
> >>> file or directory)
> >>> open("/lib/tls/v5l/fast-mult/libncurses.so.5", O_RDONLY) = -1 ENOENT
> >>> (No such file or directory)
> >>> stat64("/lib/tls/v5l/fast-mult", 0xbeb6d1a8) = -1 ENOENT (No such file
> >>> or directory)
> >>> open("/lib/tls/v5l/half/libncurses.so.5", O_RDONLY) = -1 ENOENT (No
> >>> such file or directory)
> >>> stat64("/lib/tls/v5l/half", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/tls/v5l/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such
> >>> file or directory)
> >>> stat64("/lib/tls/v5l", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/tls/fast-mult/half/libncurses.so.5", O_RDONLY) = -1 ENOENT
> >>> (No such file or directory)
> >>> stat64("/lib/tls/fast-mult/half", 0xbeb6d1a8) = -1 ENOENT (No such
> >>> file or directory)
> >>> open("/lib/tls/fast-mult/libncurses.so.5", O_RDONLY) = -1 ENOENT (No
> >>> such file or directory)
> >>> stat64("/lib/tls/fast-mult", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/tls/half/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such
> >>> file or directory)
> >>> stat64("/lib/tls/half", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/tls/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such file
> >>> or directory)
> >>> stat64("/lib/tls", {st_mode=S_IFDIR|0755,
> >>> st_size=17592186044416, ...}) = 0
> >>> open("/lib/v5l/fast-mult/half/libncurses.so.5", O_RDONLY) = -1 ENOENT
> >>> (No such file or directory)
> >>> stat64("/lib/v5l/fast-mult/half", 0xbeb6d1a8) = -1 ENOENT (No such
> >>> file or directory)
> >>> open("/lib/v5l/fast-mult/libncurses.so.5", O_RDONLY) = -1 ENOENT (No
> >>> such file or directory)
> >>> stat64("/lib/v5l/fast-mult", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/v5l/half/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such
> >>> file or directory)
> >>> stat64("/lib/v5l/half", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/v5l/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such file
> >>> or directory)
> >>> stat64("/lib/v5l", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/fast-mult/half/libncurses.so.5", O_RDONLY) = -1 ENOENT (No
> >>> such file or directory)
> >>> stat64("/lib/fast-mult/half", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/fast-mult/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such
> >>> file or directory)
> >>> stat64("/lib/fast-mult", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/half/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such file
> >>> or directory)
> >>> stat64("/lib/half", 0xbeb6d1a8) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/lib/libncurses.so.5", O_RDONLY) = 3
> >>> read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0
> >>> (\0\1\0\0\0\30\335\0\0004\0\0\0(\22\4\0\2\0\0\0044\0 \0\5\0
> >>> (\0\34\0\33\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\200l\3\0\200l
> >>> \3\0\5\0\0\0\0\200\0\0\1\0\0\0\0p\3\02
> >>> fstat64(3, {st_mode=S_IFREG|0744, st_size=17592186044416, ...}) = 0
> >>> lseek(3, 224268, SEEK_SET) = 224268
> >>> read(3, "\24\0\0\0T\0\0\0\25\0\0\0MontaVista Software
> >>> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\06
> >>> mmap2(NULL, 292240, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> >>> 0) = 0x40020000
> >>> mprotect(0x40057000, 66960, PROT_NONE) = 0
> >>> mmap2(0x40058000, 61440, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|
> >>> MAP_DENYWRITE, 3, 0x30) = 0x40058000
> >>> mmap2(0x40067000, 1424, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|
> >>> MAP_ANONYMOUS, -1, 0) = 0x40067000
> >>> close(3) = 0
> >>> open("/lib/tls/libdl.so.2", O_RDONLY) = 3
> >>> read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\324\t
> >>> \0\0004\0\0\0\374\235\0\0\2\0\0\0044\0 \0\10\0(\0)\0&
> >>> \0\6\0\0\0004\0\0\0004\0\0\0004\0\0\0\0\1\0\0\0\1\0\0\5\0\0\0\4\0\0\0\3\0\0\0\4\23\0\2
> >>> fstat64(3, {st_mode=S_IFREG|0644, st_size=17592186044416, ...}) = 0
> >>> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> >>> 0) = 0x40017000
> >>> lseek(3, 4892, SEEK_SET) = 4892
> >>> read(3, "\24\0\0\0T\0\0\0\25\0\0\0MontaVista Software
> >>> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\06
> >>> mmap2(NULL, 41104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> >>> 0) = 0x40068000
> >>> mprotect(0x4006a000, 32912, PROT_NONE) = 0
> >>> mmap2(0x40070000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|
> >>> MAP_DENYWRITE, 3, 0) = 0x40070000
> >>> close(3) = 0
> >>> open("/lib/tls/libc.so.6", O_RDONLY) = 3
> >>> read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0
> >>> (\0\1\0\0\0\0107\1\0004\0\0\0\364fK\0\2\0\0\0044\0 \0\v\0(\0R\0O
> >>> \0\1\0\0p
> >>> \274\276\17\0\274\276\17\0\274\276\17\0\20\23\0\0\20\23\0\0\4\0\0\0\4\0\0\0\6\0\0\2
> >>> fstat64(3, {st_mode=S_IFREG|0755, st_size=17592186044416, ...}) = 0
> >>> lseek(3, 1039100, SEEK_SET) = 1039100
> >>> read(3, "\24\0\0\0T\0\0\0\25\0\0\0MontaVista Software
> >>> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\06
> >>> mmap2(NULL, 1091588, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE,
> >>> 3, 0) = 0x40073000
> >>> mprotect(0x40171000, 51204, PROT_NONE) = 0
> >>> mmap2(0x40173000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|
> >>> MAP_DENYWRITE, 3, 0xf8) = 0x40173000
> >>> mmap2(0x4017c000, 6148, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|
> >>> MAP_ANONYMOUS, -1, 0) = 0x4017c000
> >>> close(3) = 0
> >>> mprotect(0x40178000, 8192, PROT_READ) = 0
> >>> mprotect(0x40071000, 4096, PROT_READ) = 0
> >>> mprotect(0x4001e000, 4096, PROT_READ) = 0
> >>> syscall_983045(0x40017d10, 0x2, 0x1, 0x4001f050, 0, 0x4001f050,
> >>> 0x4001f3c8, 0, 0x4001f0a0, 0x4001f050, 0x4001f000, 0xbeb6d95c, 0,
> >>> 0xbeb6d840, 0x40002784, 0x400102e4, 0x80000010, 0x40017d10, 0xd0b0, 00
> >>> rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0
> >>> open("/dev/tty", O_RDWR|O_NONBLOCK|O_LARGEFILE) = 3
> >>> close(3) = 0
> >>> brk(0) = 0xab000
> >>> brk(0xac000) = 0xac000
> >>> brk(0xad000) = 0xad000
> >>> getuid32() = 0
> >>> getgid32() = 0
> >>> geteuid32()
>
> ...
>
> read more »
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