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// SPDX-License-Identifier: GPL-2.0
/*
* Image loader for kexec_file_load system call.
*
* Copyright IBM Corp. 2018
*
* Author(s): Philipp Rudo <prudo@linux.vnet.ibm.com>
*/
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/kexec.h>
#include <asm/ipl.h>
#include <asm/setup.h>
static int kexec_file_add_kernel_image(struct kimage *image,
struct s390_load_data *data)
{
struct kexec_buf buf;
buf.image = image;
buf.buffer = image->kernel_buf;
buf.bufsz = image->kernel_buf_len;
buf.mem = 0;
if (image->type == KEXEC_TYPE_CRASH)
buf.mem += crashk_res.start;
buf.memsz = buf.bufsz;
data->kernel_buf = image->kernel_buf;
data->kernel_mem = buf.mem;
data->parm = image->kernel_buf + PARMAREA;
data->memsz += buf.memsz;
ipl_report_add_component(data->report, &buf,
IPL_RB_COMPONENT_FLAG_SIGNED |
IPL_RB_COMPONENT_FLAG_VERIFIED,
IPL_RB_CERT_UNKNOWN);
return kexec_add_buffer(&buf);
}
static void *s390_image_load(struct kimage *image,
char *kernel, unsigned long kernel_len,
char *initrd, unsigned long initrd_len,
char *cmdline, unsigned long cmdline_len)
{
return kexec_file_add_components(image, kexec_file_add_kernel_image);
}
static int s390_image_probe(const char *buf, unsigned long len)
{
/* Can't reliably tell if an image is valid. Therefore give the
* user whatever he wants.
*/
return 0;
}
const struct kexec_file_ops s390_kexec_image_ops = {
.probe = s390_image_probe,
.load = s390_image_load,
#ifdef CONFIG_KEXEC_VERIFY_SIG
.verify_sig = s390_verify_sig,
#endif /* CONFIG_KEXEC_VERIFY_SIG */
};
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