2 * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
4 * SPDX-License-Identifier: BSD-3-Clause
7 #include <platform_def.h>
9 #include <lib/xlat_tables/xlat_tables_defs.h>
11 OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
12 OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
13 ENTRY(bl2u_entrypoint)
16 RAM (rwx): ORIGIN = BL2U_BASE, LENGTH = BL2U_LIMIT - BL2U_BASE
23 ASSERT(. == ALIGN(PAGE_SIZE),
24 "BL2U_BASE address is not aligned on a page boundary.")
26 #if SEPARATE_CODE_AND_RODATA
29 *bl2u_entrypoint.o(.text*)
36 /* .ARM.extab and .ARM.exidx are only added because Clang need them */
38 *(.ARM.extab* .gnu.linkonce.armextab.*)
42 *(.ARM.exidx* .gnu.linkonce.armexidx.*)
54 *bl2u_entrypoint.o(.text*)
59 __RO_END_UNALIGNED__ = .;
61 * Memory page(s) mapped to this section will be marked as
62 * read-only, executable. No RW data from the next section must
63 * creep in. Ensure the rest of the current memory page is unused.
71 * Define a linker symbol to mark start of the RW memory area for this
77 * .data must be placed at a lower address than the stacks if the stack
78 * protector is enabled. Alternatively, the .data.stack_protector_canary
79 * section can be placed independently of the main .data section.
94 * The .bss section gets initialised to 0 at runtime.
95 * Its base address should be 16-byte aligned for better performance of the
96 * zero-initialization code.
100 *(SORT_BY_ALIGNMENT(.bss*))
106 * The xlat_table section is for full, aligned page tables (4K).
107 * Removing them from .bss avoids forcing 4K alignment on
108 * the .bss section. The tables are initialized to zero by the translation
111 xlat_table (NOLOAD) : {
117 * The base address of the coherent memory section must be page-aligned (4K)
118 * to guarantee that the coherent data are stored on their own pages and
119 * are not mixed with normal data. This is required to set up the correct
120 * memory attributes for the coherent data page tables.
122 coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
123 __COHERENT_RAM_START__ = .;
125 __COHERENT_RAM_END_UNALIGNED__ = .;
127 * Memory page(s) mapped to this section will be marked
128 * as device memory. No other unexpected data must creep in.
129 * Ensure the rest of the current memory page is unused.
131 . = ALIGN(PAGE_SIZE);
132 __COHERENT_RAM_END__ = .;
137 * Define a linker symbol to mark end of the RW memory area for this
143 __BSS_SIZE__ = SIZEOF(.bss);
145 ASSERT(. <= BL2U_LIMIT, "BL2U image has exceeded its limit.")