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Use kexec's existing infrastrucutre for supporting initrd loading.
The initrd image is loaded into a buffer after the dtb and its details
passed through the device tree, so it's supported on newer platforms
that make use of the device tree passed from kexec.
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Signed-off-by: Simon Horman <horms@verge.net.au>
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Kexec for MIPS currently does not support loading devicetrees, unless
they are embedded in the kernel elf file.
Add an option to either pass a new dtb file or - if not specified - to
be generated from existing device tree on the device. As new generic
platforms require a dtb to be passed separately this is required for
such platforms and will be ignored by the kernel otherwise.
Generic kexec infrastructure for dtb support is used.
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Signed-off-by: Simon Horman <horms@verge.net.au>
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At the moment only commandline handling is implemented and there is
nothing elf-specific about it, so all of the commandline parsing logic
can be moved to common arch code.
getopt() options are moved to KEXEC_ARCH_OPTIONS macro (as many
platforms currently do) to avoid unnecessary duplication.
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
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Presumably these had been copied from ppc.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Simon Horman <horms@verge.net.au>
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- using simple mips* ) in configure.ac to make it compilable on mips2
and mips64
- remove kexec/arch/mips/mips-setup-simple.S which prepares cmdline for
new kernel, it is better to move this work to kernel code. BTW this code was
compilable only on o32 because of t4 is not defined on 64-64 or n32 MIPS ABIs.
- simple put cmdline as string, kernel code should catch cmdline like this
int board_kexec_prepare(struct kimage *image)
{
int i;
char *bootloader = "kexec";
board_boot_desc_ptr->argc = 0;
for(i=0;i<image->nr_segments;i++)
{
printk("segment %d
if (!strncmp(bootloader, (char*)image->segment[i].buf,
strlen(bootloader)))
{
/*
* convert command line string to array
* of parameters (as bootloader does).
*/
int argc = 0, offt;
char *str = (char *)image->segment[i].buf;
char *ptr = strchr(str, ' ');
while (ptr && (ARGV_MAX_ARGS > argc)) {
*ptr = '\0';
if (ptr[1] != ' ') {
offt = (int)(ptr - str + 1);
boot_desc_ptr->argv[argc] =
image->segment[i].mem + offt;
argc++;
}
ptr = strchr(ptr + 1, ' ');
}
boot_desc_ptr->argc = argc;
break;
}
}
Keep it as string make code simple and more readable.
- add crashdump support
- do not redefine syscalls numbers if they defined in system
remove fixups for /proc/iomem. If your board provides wrong /proc/iomem please
fix kernel, or at least you local version of kexec. No need to support it in
main line. At least add option --fake-iomem
- some minor fixes
Signed-off-by: Maxim Uvarov <muvarov@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
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[ Reposted with correct linux-mips address ]
Hi,
this patch switches the mips support in kexec-tools around a little bit.
All the files and directories containing "mipsel" have been renamed
to contain "mips" instead.
This is kind of consistent with the way that ARCH=mips in the kernel
works for both big and little endian.
After a small amount of tweaking, which is also included in this patch, the
code compiles and works fine for big endian mips as well as small endian
mips. All you need to do is compile using an appropriate compiler.
That is to say, kexec-tools's build system doesn't need to
be told about which endienness the code is being compiled for.
I have added kept mipsel as a supported "architecture" via ./configure,
though its just an alias for mips now. This is consistent with how
other architectures such as sh are treated. But I'm happy to remove
mipsel from ./configure if the mips people want that.
I tested this patch using qemu and the 2.6.24.3 tag of the mips-2.6 git
tree compiled for the qemu machine type for both big and little endian.
The qemu machine type has subsequently been removed, and kexec-tools
needs some work in order to function with qemu - as far as I understand
the way the boot parameters are passed needs to be fixed, likely
in purgatory. However, this is not related to the changes
introduced in this patch.
I intend to merge this patch into kexec-tools-testing if
no alarm bells are sounded.
Signed-off-by: Simon Horman <horms@verge.net.au>
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