2 * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
4 * SPDX-License-Identifier: BSD-3-Clause
7 #include <platform_def.h>
8 #include <xlat_tables_defs.h>
10 OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
11 OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
12 ENTRY(bl2u_entrypoint)
15 RAM (rwx): ORIGIN = BL2U_BASE, LENGTH = BL2U_LIMIT - BL2U_BASE
22 ASSERT(. == ALIGN(PAGE_SIZE),
23 "BL2U_BASE address is not aligned on a page boundary.")
25 #if SEPARATE_CODE_AND_RODATA
28 *bl2u_entrypoint.o(.text*)
44 *bl2u_entrypoint.o(.text*)
49 __RO_END_UNALIGNED__ = .;
51 * Memory page(s) mapped to this section will be marked as
52 * read-only, executable. No RW data from the next section must
53 * creep in. Ensure the rest of the current memory page is unused.
61 * Define a linker symbol to mark start of the RW memory area for this
67 * .data must be placed at a lower address than the stacks if the stack
68 * protector is enabled. Alternatively, the .data.stack_protector_canary
69 * section can be placed independently of the main .data section.
84 * The .bss section gets initialised to 0 at runtime.
85 * Its base address should be 16-byte aligned for better performance of the
86 * zero-initialization code.
90 *(SORT_BY_ALIGNMENT(.bss*))
96 * The xlat_table section is for full, aligned page tables (4K).
97 * Removing them from .bss avoids forcing 4K alignment on
98 * the .bss section and eliminates the unecessary zero init
100 xlat_table (NOLOAD) : {
106 * The base address of the coherent memory section must be page-aligned (4K)
107 * to guarantee that the coherent data are stored on their own pages and
108 * are not mixed with normal data. This is required to set up the correct
109 * memory attributes for the coherent data page tables.
111 coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
112 __COHERENT_RAM_START__ = .;
114 __COHERENT_RAM_END_UNALIGNED__ = .;
116 * Memory page(s) mapped to this section will be marked
117 * as device memory. No other unexpected data must creep in.
118 * Ensure the rest of the current memory page is unused.
121 __COHERENT_RAM_END__ = .;
126 * Define a linker symbol to mark end of the RW memory area for this
132 __BSS_SIZE__ = SIZEOF(.bss);
134 ASSERT(. <= BL2U_LIMIT, "BL2U image has exceeded its limit.")