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s390/kexec_file: Unify loader code

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s390_image_load and s390_elf_load have the same code to load the different
components. Combine this functionality in one shared function.

While at it move kexec_file_update_kernel into the new function as well.

Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Philipp Rudo
2019-03-07 12:48:03 +01:00
committed by Martin Schwidefsky
parent d0d249d75d
commit 8e49642613
4 changed files with 58 additions and 84 deletions
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31
arch/s390/kernel/kexec_elf.c
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@@ -12,16 +12,17 @@
#include <linux/kexec.h>
#include <asm/setup.h>
static int kexec_file_add_elf_kernel(struct kimage *image,
struct s390_load_data *data,
char *kernel, unsigned long kernel_len)
static int kexec_file_add_kernel_elf(struct kimage *image,
struct s390_load_data *data)
{
struct kexec_buf buf;
const Elf_Ehdr *ehdr;
const Elf_Phdr *phdr;
Elf_Addr entry;
void *kernel;
int i, ret;
kernel = image->kernel_buf;
ehdr = (Elf_Ehdr *)kernel;
buf.image = image;
if (image->type == KEXEC_TYPE_CRASH)
@@ -62,7 +63,7 @@ static int kexec_file_add_elf_kernel(struct kimage *image,
data->memsz = ALIGN(data->memsz, phdr->p_align) + buf.memsz;
}
return 0;
return data->memsz ? 0 : -EINVAL;
}
static void *s390_elf_load(struct kimage *image,
@@ -70,11 +71,10 @@ static void *s390_elf_load(struct kimage *image,
char *initrd, unsigned long initrd_len,
char *cmdline, unsigned long cmdline_len)
{
struct s390_load_data data = {0};
const Elf_Ehdr *ehdr;
const Elf_Phdr *phdr;
size_t size;
int i, ret;
int i;
/* image->fobs->probe already checked for valid ELF magic number. */
ehdr = (Elf_Ehdr *)kernel;
@@ -107,24 +107,7 @@ static void *s390_elf_load(struct kimage *image,
if (size > kernel_len)
return ERR_PTR(-EINVAL);
ret = kexec_file_add_elf_kernel(image, &data, kernel, kernel_len);
if (ret)
return ERR_PTR(ret);
if (!data.memsz)
return ERR_PTR(-EINVAL);
if (initrd) {
ret = kexec_file_add_initrd(image, &data, initrd, initrd_len);
if (ret)
return ERR_PTR(ret);
}
ret = kexec_file_add_purgatory(image, &data);
if (ret)
return ERR_PTR(ret);
return kexec_file_update_kernel(image, &data);
return kexec_file_add_components(image, kexec_file_add_kernel_elf);
}
static int s390_elf_probe(const char *buf, unsigned long len)