| // 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 */ |
| }; |