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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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64
arch/s390/kernel/machine_kexec_file.c
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@@ -17,25 +17,6 @@ const struct kexec_file_ops * const kexec_file_loaders[] = {
NULL,
};
int *kexec_file_update_kernel(struct kimage *image,
struct s390_load_data *data)
{
unsigned long *loc;
if (image->cmdline_buf_len >= ARCH_COMMAND_LINE_SIZE)
return ERR_PTR(-EINVAL);
memcpy(data->parm->command_line, image->cmdline_buf,
image->cmdline_buf_len);
if (image->type == KEXEC_TYPE_CRASH) {
data->parm->oldmem_base = crashk_res.start;
data->parm->oldmem_size = crashk_res.end - crashk_res.start + 1;
}
return NULL;
}
static int kexec_file_update_purgatory(struct kimage *image)
{
u64 entry, type;
@@ -78,7 +59,8 @@ static int kexec_file_update_purgatory(struct kimage *image)
return ret;
}
int kexec_file_add_purgatory(struct kimage *image, struct s390_load_data *data)
static int kexec_file_add_purgatory(struct kimage *image,
struct s390_load_data *data)
{
struct kexec_buf buf;
int ret;
@@ -98,16 +80,16 @@ int kexec_file_add_purgatory(struct kimage *image, struct s390_load_data *data)
return ret;
}
int kexec_file_add_initrd(struct kimage *image, struct s390_load_data *data,
char *initrd, unsigned long initrd_len)
static int kexec_file_add_initrd(struct kimage *image,
struct s390_load_data *data)
{
struct kexec_buf buf;
int ret;
buf.image = image;
buf.buffer = initrd;
buf.bufsz = initrd_len;
buf.buffer = image->initrd_buf;
buf.bufsz = image->initrd_buf_len;
data->memsz = ALIGN(data->memsz, PAGE_SIZE);
buf.mem = data->memsz;
@@ -123,6 +105,40 @@ int kexec_file_add_initrd(struct kimage *image, struct s390_load_data *data,
return ret;
}
void *kexec_file_add_components(struct kimage *image,
int (*add_kernel)(struct kimage *image,
struct s390_load_data *data))
{
struct s390_load_data data = {0};
int ret;
ret = add_kernel(image, &data);
if (ret)
return ERR_PTR(ret);
if (image->cmdline_buf_len >= ARCH_COMMAND_LINE_SIZE)
return ERR_PTR(-EINVAL);
memcpy(data.parm->command_line, image->cmdline_buf,
image->cmdline_buf_len);
if (image->type == KEXEC_TYPE_CRASH) {
data.parm->oldmem_base = crashk_res.start;
data.parm->oldmem_size = crashk_res.end - crashk_res.start + 1;
}
if (image->initrd_buf) {
ret = kexec_file_add_initrd(image, &data);
if (ret)
return ERR_PTR(ret);
}
ret = kexec_file_add_purgatory(image, &data);
if (ret)
return ERR_PTR(ret);
return NULL;
}
int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
Elf_Shdr *section,
const Elf_Shdr *relsec,