diff options
Diffstat (limited to 'arch/powerpc/kernel/kexec_elf_64.c')
| -rw-r--r-- | arch/powerpc/kernel/kexec_elf_64.c | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/arch/powerpc/kernel/kexec_elf_64.c b/arch/powerpc/kernel/kexec_elf_64.c deleted file mode 100644 index 3072fd6dbe94..000000000000 --- a/arch/powerpc/kernel/kexec_elf_64.c +++ /dev/null @@ -1,125 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Load ELF vmlinux file for the kexec_file_load syscall. - * - * Copyright (C) 2004 Adam Litke (agl@us.ibm.com) - * Copyright (C) 2004 IBM Corp. - * Copyright (C) 2005 R Sharada (sharada@in.ibm.com) - * Copyright (C) 2006 Mohan Kumar M (mohan@in.ibm.com) - * Copyright (C) 2016 IBM Corporation - * - * Based on kexec-tools' kexec-elf-exec.c and kexec-elf-ppc64.c. - * Heavily modified for the kernel by - * Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>. - */ - -#define pr_fmt(fmt) "kexec_elf: " fmt - -#include <linux/elf.h> -#include <linux/kexec.h> -#include <linux/libfdt.h> -#include <linux/module.h> -#include <linux/of_fdt.h> -#include <linux/slab.h> -#include <linux/types.h> - -static void *elf64_load(struct kimage *image, char *kernel_buf, - unsigned long kernel_len, char *initrd, - unsigned long initrd_len, char *cmdline, - unsigned long cmdline_len) -{ - int ret; - unsigned int fdt_size; - unsigned long kernel_load_addr; - unsigned long initrd_load_addr = 0, fdt_load_addr; - void *fdt; - const void *slave_code; - struct elfhdr ehdr; - struct kexec_elf_info elf_info; - struct kexec_buf kbuf = { .image = image, .buf_min = 0, - .buf_max = ppc64_rma_size }; - struct kexec_buf pbuf = { .image = image, .buf_min = 0, - .buf_max = ppc64_rma_size, .top_down = true, - .mem = KEXEC_BUF_MEM_UNKNOWN }; - - ret = kexec_build_elf_info(kernel_buf, kernel_len, &ehdr, &elf_info); - if (ret) - goto out; - - ret = kexec_elf_load(image, &ehdr, &elf_info, &kbuf, &kernel_load_addr); - if (ret) - goto out; - - pr_debug("Loaded the kernel at 0x%lx\n", kernel_load_addr); - - ret = kexec_load_purgatory(image, &pbuf); - if (ret) { - pr_err("Loading purgatory failed.\n"); - goto out; - } - - pr_debug("Loaded purgatory at 0x%lx\n", pbuf.mem); - - if (initrd != NULL) { - kbuf.buffer = initrd; - kbuf.bufsz = kbuf.memsz = initrd_len; - kbuf.buf_align = PAGE_SIZE; - kbuf.top_down = false; - kbuf.mem = KEXEC_BUF_MEM_UNKNOWN; - ret = kexec_add_buffer(&kbuf); - if (ret) - goto out; - initrd_load_addr = kbuf.mem; - - pr_debug("Loaded initrd at 0x%lx\n", initrd_load_addr); - } - - fdt_size = fdt_totalsize(initial_boot_params) * 2; - fdt = kmalloc(fdt_size, GFP_KERNEL); - if (!fdt) { - pr_err("Not enough memory for the device tree.\n"); - ret = -ENOMEM; - goto out; - } - ret = fdt_open_into(initial_boot_params, fdt, fdt_size); - if (ret < 0) { - pr_err("Error setting up the new device tree.\n"); - ret = -EINVAL; - goto out; - } - - ret = setup_new_fdt(image, fdt, initrd_load_addr, initrd_len, cmdline); - if (ret) - goto out; - - fdt_pack(fdt); - - kbuf.buffer = fdt; - kbuf.bufsz = kbuf.memsz = fdt_size; - kbuf.buf_align = PAGE_SIZE; - kbuf.top_down = true; - kbuf.mem = KEXEC_BUF_MEM_UNKNOWN; - ret = kexec_add_buffer(&kbuf); - if (ret) - goto out; - fdt_load_addr = kbuf.mem; - - pr_debug("Loaded device tree at 0x%lx\n", fdt_load_addr); - - slave_code = elf_info.buffer + elf_info.proghdrs[0].p_offset; - ret = setup_purgatory(image, slave_code, fdt, kernel_load_addr, - fdt_load_addr); - if (ret) - pr_err("Error setting up the purgatory.\n"); - -out: - kexec_free_elf_info(&elf_info); - - /* Make kimage_file_post_load_cleanup free the fdt buffer for us. */ - return ret ? ERR_PTR(ret) : fdt; -} - -const struct kexec_file_ops kexec_elf64_ops = { - .probe = kexec_elf_probe, - .load = elf64_load, -}; |