projectgus / kernel_wm8505 Goto Github PK

Verify that adhoc ubin and mainline uImage targets produce essentially the same kernel binary (by comparing commands and booting to kernels, if needed), and get rid of ubin target.

The link http://gitorious.org/linux-on-via-vt8500 no longer works

I am trying to build this kernel for a generic netbook I have, but I am running into problems. My environment is Ubuntu 16.04 with gcc-5-arm-linux-gnueabi. When I follow the instructions in the README and I execute the command make via_obj uImage modules ARCH=arm, I get this output:

cp -Rf ./via_obj.arm_v5t-2629.01/* ./
CHK include/linux/version.h
make[1]: 'include/asm-arm/mach-types.h' is up to date.
CHK include/linux/utsrelease.h
SYMLINK include/asm -> include/asm-arm
CC kernel/bounds.s
GEN include/linux/bounds.h
CC arch/arm/kernel/asm-offsets.s
GEN include/asm/asm-offsets.h
CALL scripts/checksyscalls.sh
<stdin>:1097:2: warning: #warning syscall fadvise64 not implemented [-Wcpp]
<stdin>:1265:2: warning: #warning syscall migrate_pages not implemented [-Wcpp]
<stdin>:1321:2: warning: #warning syscall pselect6 not implemented [-Wcpp]
<stdin>:1325:2: warning: #warning syscall ppoll not implemented [-Wcpp]
<stdin>:1365:2: warning: #warning syscall epoll_pwait not implemented [-Wcpp]
CC scripts/mod/empty.o
HOSTCC scripts/mod/mk_elfconfig
MKELF scripts/mod/elfconfig.h
HOSTCC scripts/mod/file2alias.o
HOSTCC scripts/mod/modpost.o
scripts/mod/modpost.c: In function ‘get_markers’:
scripts/mod/modpost.c:1542:4: warning: ignoring return value of ‘asprintf’, declared with attribute warn_unused_result [-Wunused-result]
asprintf(&line, "%s\t%s\t%s\n", name, mod->name, fmt);
^
scripts/mod/modpost.c: In function ‘add_marker’:
scripts/mod/modpost.c:1962:2: warning: ignoring return value of ‘asprintf’, declared with attribute
warn_unused_result [-Wunused-result]
asprintf(&line, "%s\t%s\t%s\n", name, mod->name, fmt);
^
HOSTCC scripts/mod/sumversion.o
HOSTLD scripts/mod/modpost
HOSTCC scripts/ihex2fw
scripts/ihex2fw.c: In function ‘output_records’:
scripts/ihex2fw.c:261:3: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result [-Wunused-result]
write(outfd, &p->addr, writelen);
^
scripts/ihex2fw.c:266:2: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result [-Wunused-result]
write(outfd, zeroes, 6);
^
HOSTCC scripts/kallsyms
scripts/kallsyms.c: In function ‘read_symbol’:
scripts/kallsyms.c:74:4: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result [-Wunused-result]
fgets(str, 500, in);
^
HOSTCC scripts/conmakehash
HOSTCC scripts/bin2c
CC init/main.o
In file included from include/linux/mempolicy.h:62:0,
from init/main.c:51:
include/linux/pagemap.h: In function ‘fault_in_pages_readable’:
include/linux/pagemap.h:416:16: warning: variable ‘c’ set but not used [-Wunused-but-set-variable]
volatile char c;
^
init/main.c: In function ‘start_kernel’:
init/main.c:558:9: warning: format not a string literal and no format arguments [-Wformat-security]
printk(linux_banner);
^
CHK include/linux/compile.h
UPD include/linux/compile.h
CC init/version.o
CC init/do_mounts.o
In file included from include/linux/nfs_fs.h:45:0,
from init/do_mounts.c:18:
include/linux/pagemap.h: In function ‘fault_in_pages_readable’:
include/linux/pagemap.h:416:16: warning: variable ‘c’ set but not used [-Wunused-but-set-variable]
volatile char c;
^
CC init/do_mounts_rd.o
CC init/do_mounts_initrd.o
LD init/mounts.o
CC init/initramfs.o
init/initramfs.c: In function ‘populate_rootfs’:
init/initramfs.c:582:3: warning: format not a string literal and no format arguments [-Wformat-security]
panic(err);
^
CC init/calibrate.o
LD init/built-in.o
init/mounts.o: In functiontty_driver_kref_get': do_mounts_initrd.c:(.text+0x0): multiple definition of tty_driver_kref_get'
init/main.o:main.c:(.text+0x0): first defined here
scripts/Makefile.build:291: recipe for target 'init/built-in.o' failed
make[1]: *** [init/built-in.o] Error 1
Makefile:869: recipe for target 'init' failed
make: *** [init] Error 2

I'm pretty sure a lot of that is ignorable, such as -Wformat-security warnings, I don't know why I'm getting multiple definitions of the function tty_driver_kref_get. The only editing I have done to the source is adding in a modern compiler-gcc5.h to include/linux.

Any help is appreciated.

After trying your latest build procedure (as per
https://github.com/projectgus/kernel_wm8505#readme), I tried to use a
newly compiled wmt_battery.ko in my netbook, but:

insmod /.driver/wmt_battery.ko

failed (because of an error message that I miss now).

It worked (and I could see my own debugging messages, with "dmesg")
only after I recompiled the module setting "KERNELRELEASE" at command
line. I.e.

make modules_install ARCH=arm INSTALL_MOD_PATH=./modules/staging
KERNELRELEASE=2.6.29-00236-g4f8dbbb-dirty

Indeed, "strings wmt_battery.ko | grep vermagic" didn't return the
content of KERNELRELEASE (as it should) if I used the "export
KERNELRELEASE=..." mode. I always used "export CROSS_COMPILE=arm-
eabi-" instead.

As per http://groups.google.com/group/vt8500-wm8505-linux-kernel/msg/b216033eaaca44ef

There's leftover from upstream vendor:

CROSS_COMPILE ?= arm_v5t_le-

arm_v5t_le- should be removed from there, leaving in pristine state. Otherwise, it produces confusing output:

 $ make via_obj
 make: arm_v5t_le-gcc: Command not found
 cp -Rf ./via_obj.arm_v5t-2629.01/* ./