2 * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
4 * SPDX-License-Identifier: BSD-3-Clause
7 #include <platform_def.h>
9 OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
10 OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
11 ENTRY(bl2u_entrypoint)
14 RAM (rwx): ORIGIN = BL2U_BASE, LENGTH = BL2U_LIMIT - BL2U_BASE
21 ASSERT(. == ALIGN(4096),
22 "BL2U_BASE address is not aligned on a page boundary.")
24 #if SEPARATE_CODE_AND_RODATA
27 *bl2u_entrypoint.o(.text*)
43 *bl2u_entrypoint.o(.text*)
48 __RO_END_UNALIGNED__ = .;
50 * Memory page(s) mapped to this section will be marked as
51 * read-only, executable. No RW data from the next section must
52 * creep in. Ensure the rest of the current memory page is unused.
60 * Define a linker symbol to mark start of the RW memory area for this
66 * .data must be placed at a lower address than the stacks if the stack
67 * protector is enabled. Alternatively, the .data.stack_protector_canary
68 * section can be placed independently of the main .data section.
83 * The .bss section gets initialised to 0 at runtime.
84 * Its base address should be 16-byte aligned for better performance of the
85 * zero-initialization code.
89 *(SORT_BY_ALIGNMENT(.bss*))
95 * The xlat_table section is for full, aligned page tables (4K).
96 * Removing them from .bss avoids forcing 4K alignment on
97 * the .bss section and eliminates the unecessary zero init
99 xlat_table (NOLOAD) : {
105 * The base address of the coherent memory section must be page-aligned (4K)
106 * to guarantee that the coherent data are stored on their own pages and
107 * are not mixed with normal data. This is required to set up the correct
108 * memory attributes for the coherent data page tables.
110 coherent_ram (NOLOAD) : ALIGN(4096) {
111 __COHERENT_RAM_START__ = .;
113 __COHERENT_RAM_END_UNALIGNED__ = .;
115 * Memory page(s) mapped to this section will be marked
116 * as device memory. No other unexpected data must creep in.
117 * Ensure the rest of the current memory page is unused.
120 __COHERENT_RAM_END__ = .;
125 * Define a linker symbol to mark end of the RW memory area for this
131 __BSS_SIZE__ = SIZEOF(.bss);
133 ASSERT(. <= BL2U_LIMIT, "BL2U image has exceeded its limit.")