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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-01-20 14:01:31 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-01-20 14:01:31 -0300
commitb4b7ff4b08e691656c9d77c758fc355833128ac0 (patch)
tree82fcb00e6b918026dc9f2d1f05ed8eee83874cc0 /arch/arm64/kernel/efi-stub.c
parent35acfa0fc609f2a2cd95cef4a6a9c3a5c38f1778 (diff)
Linux-libre 4.4-gnupck-4.4-gnu
Diffstat (limited to 'arch/arm64/kernel/efi-stub.c')
-rw-r--r--arch/arm64/kernel/efi-stub.c78
1 files changed, 0 insertions, 78 deletions
diff --git a/arch/arm64/kernel/efi-stub.c b/arch/arm64/kernel/efi-stub.c
deleted file mode 100644
index 78dfbd34b..000000000
--- a/arch/arm64/kernel/efi-stub.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * 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 __init handle_kernel_image(efi_system_table_t *sys_table_arg,
- 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;
- unsigned long nr_pages;
- void *old_image_addr = (void *)*image_addr;
- unsigned long preferred_offset;
-
- /*
- * The preferred offset of the kernel Image is TEXT_OFFSET bytes beyond
- * a 2 MB aligned base, which itself may be lower than dram_base, as
- * long as the resulting offset equals or exceeds it.
- */
- preferred_offset = round_down(dram_base, SZ_2M) + TEXT_OFFSET;
- if (preferred_offset < dram_base)
- preferred_offset += SZ_2M;
-
- /* Relocate the image, if required. */
- kernel_size = _edata - _text;
- if (*image_addr != preferred_offset) {
- kernel_memsize = kernel_size + (_end - _edata);
-
- /*
- * First, try a straight allocation at the preferred offset.
- * This will work around the issue where, if dram_base == 0x0,
- * efi_low_alloc() refuses to allocate at 0x0 (to prevent the
- * address of the allocation to be mistaken for a FAIL return
- * value or a NULL pointer). It will also ensure that, on
- * platforms where the [dram_base, dram_base + TEXT_OFFSET)
- * interval is partially occupied by the firmware (like on APM
- * Mustang), we can still place the kernel at the address
- * 'dram_base + TEXT_OFFSET'.
- */
- *image_addr = *reserve_addr = preferred_offset;
- nr_pages = round_up(kernel_memsize, EFI_ALLOC_ALIGN) /
- EFI_PAGE_SIZE;
- status = efi_call_early(allocate_pages, EFI_ALLOCATE_ADDRESS,
- EFI_LOADER_DATA, nr_pages,
- (efi_physical_addr_t *)reserve_addr);
- if (status != EFI_SUCCESS) {
- kernel_memsize += TEXT_OFFSET;
- status = efi_low_alloc(sys_table_arg, kernel_memsize,
- SZ_2M, reserve_addr);
-
- if (status != EFI_SUCCESS) {
- pr_efi_err(sys_table_arg, "Failed to relocate kernel\n");
- return status;
- }
- *image_addr = *reserve_addr + TEXT_OFFSET;
- }
- memcpy((void *)*image_addr, old_image_addr, kernel_size);
- *reserve_size = kernel_memsize;
- }
-
-
- return EFI_SUCCESS;
-}