| /* |
| * Copyright (C) 2013, 2014 Linaro Ltd; <roy.franz@linaro.org> |
| * |
| * This file implements the EFI boot stub for the arm64 kernel. |
| * Adapted from ARM version by Mark Salter <msalter@redhat.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| */ |
| #include <linux/efi.h> |
| #include <asm/efi.h> |
| #include <asm/sections.h> |
| |
| efi_status_t handle_kernel_image(efi_system_table_t *sys_table, |
| unsigned long *image_addr, |
| unsigned long *image_size, |
| unsigned long *reserve_addr, |
| unsigned long *reserve_size, |
| unsigned long dram_base, |
| efi_loaded_image_t *image) |
| { |
| efi_status_t status; |
| unsigned long kernel_size, kernel_memsize = 0; |
| |
| /* Relocate the image, if required. */ |
| kernel_size = _edata - _text; |
| if (*image_addr != (dram_base + TEXT_OFFSET)) { |
| kernel_memsize = kernel_size + (_end - _edata); |
| status = efi_low_alloc(sys_table, kernel_memsize + TEXT_OFFSET, |
| SZ_2M, reserve_addr); |
| if (status != EFI_SUCCESS) { |
| pr_efi_err(sys_table, "Failed to relocate kernel\n"); |
| return status; |
| } |
| memcpy((void *)*reserve_addr + TEXT_OFFSET, (void *)*image_addr, |
| kernel_size); |
| *image_addr = *reserve_addr + TEXT_OFFSET; |
| *reserve_size = kernel_memsize + TEXT_OFFSET; |
| } |
| |
| |
| return EFI_SUCCESS; |
| } |
