Revert "Merge remote-tracking branch 'msm-4.4/tmp-510d0a3f' into msm-4.4"

This reverts commit 9d6fd2c3e9fcfb ("Merge remote-tracking branch
'msm-4.4/tmp-510d0a3f' into msm-4.4"), because it breaks the
dump parsing tools due to kernel can be loaded anywhere in the memory
now and not fixed at linear mapping.

Change-Id: Id416f0a249d803442847d09ac47781147b0d0ee6
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>

1 files changed, 0 insertions, 135 deletions

diff --git a/drivers/firmware/efi/libstub/random.c b/drivers/firmware/efi/libstub/random.c
deleted file mode 100644
index 53f6d3fe6d86..000000000000
--- a/drivers/firmware/efi/libstub/random.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * Copyright (C) 2016 Linaro Ltd;  <ard.biesheuvel@linaro.org>
- *
- * 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 "efistub.h"
-
-struct efi_rng_protocol {
-	efi_status_t (*get_info)(struct efi_rng_protocol *,
-				 unsigned long *, efi_guid_t *);
-	efi_status_t (*get_rng)(struct efi_rng_protocol *,
-				efi_guid_t *, unsigned long, u8 *out);
-};
-
-efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table_arg,
-				  unsigned long size, u8 *out)
-{
-	efi_guid_t rng_proto = EFI_RNG_PROTOCOL_GUID;
-	efi_status_t status;
-	struct efi_rng_protocol *rng;
-
-	status = efi_call_early(locate_protocol, &rng_proto, NULL,
-				(void **)&rng);
-	if (status != EFI_SUCCESS)
-		return status;
-
-	return rng->get_rng(rng, NULL, size, out);
-}
-
-/*
- * Return the number of slots covered by this entry, i.e., the number of
- * addresses it covers that are suitably aligned and supply enough room
- * for the allocation.
- */
-static unsigned long get_entry_num_slots(efi_memory_desc_t *md,
-					 unsigned long size,
-					 unsigned long align)
-{
-	u64 start, end;
-
-	if (md->type != EFI_CONVENTIONAL_MEMORY)
-		return 0;
-
-	start = round_up(md->phys_addr, align);
-	end = round_down(md->phys_addr + md->num_pages * EFI_PAGE_SIZE - size,
-			 align);
-
-	if (start > end)
-		return 0;
-
-	return (end - start + 1) / align;
-}
-
-/*
- * The UEFI memory descriptors have a virtual address field that is only used
- * when installing the virtual mapping using SetVirtualAddressMap(). Since it
- * is unused here, we can reuse it to keep track of each descriptor's slot
- * count.
- */
-#define MD_NUM_SLOTS(md)	((md)->virt_addr)
-
-efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg,
-			      unsigned long size,
-			      unsigned long align,
-			      unsigned long *addr,
-			      unsigned long random_seed)
-{
-	unsigned long map_size, desc_size, total_slots = 0, target_slot;
-	efi_status_t status;
-	efi_memory_desc_t *memory_map;
-	int map_offset;
-
-	status = efi_get_memory_map(sys_table_arg, &memory_map, &map_size,
-				    &desc_size, NULL, NULL);
-	if (status != EFI_SUCCESS)
-		return status;
-
-	if (align < EFI_ALLOC_ALIGN)
-		align = EFI_ALLOC_ALIGN;
-
-	/* count the suitable slots in each memory map entry */
-	for (map_offset = 0; map_offset < map_size; map_offset += desc_size) {
-		efi_memory_desc_t *md = (void *)memory_map + map_offset;
-		unsigned long slots;
-
-		slots = get_entry_num_slots(md, size, align);
-		MD_NUM_SLOTS(md) = slots;
-		total_slots += slots;
-	}
-
-	/* find a random number between 0 and total_slots */
-	target_slot = (total_slots * (u16)random_seed) >> 16;
-
-	/*
-	 * target_slot is now a value in the range [0, total_slots), and so
-	 * it corresponds with exactly one of the suitable slots we recorded
-	 * when iterating over the memory map the first time around.
-	 *
-	 * So iterate over the memory map again, subtracting the number of
-	 * slots of each entry at each iteration, until we have found the entry
-	 * that covers our chosen slot. Use the residual value of target_slot
-	 * to calculate the randomly chosen address, and allocate it directly
-	 * using EFI_ALLOCATE_ADDRESS.
-	 */
-	for (map_offset = 0; map_offset < map_size; map_offset += desc_size) {
-		efi_memory_desc_t *md = (void *)memory_map + map_offset;
-		efi_physical_addr_t target;
-		unsigned long pages;
-
-		if (target_slot >= MD_NUM_SLOTS(md)) {
-			target_slot -= MD_NUM_SLOTS(md);
-			continue;
-		}
-
-		target = round_up(md->phys_addr, align) + target_slot * align;
-		pages = round_up(size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE;
-
-		status = efi_call_early(allocate_pages, EFI_ALLOCATE_ADDRESS,
-					EFI_LOADER_DATA, pages, &target);
-		if (status == EFI_SUCCESS)
-			*addr = target;
-		break;
-	}
-
-	efi_call_early(free_pool, memory_map);
-
-	return status;
-}