2 * Copyright (c) 2015-2018, 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*)
35 /* .ARM.extab and .ARM.exidx are only added because Clang need them */
37 *(.ARM.extab* .gnu.linkonce.armextab.*)
41 *(.ARM.exidx* .gnu.linkonce.armexidx.*)
53 *bl2u_entrypoint.o(.text*)
58 __RO_END_UNALIGNED__ = .;
60 * Memory page(s) mapped to this section will be marked as
61 * read-only, executable. No RW data from the next section must
62 * creep in. Ensure the rest of the current memory page is unused.
70 * Define a linker symbol to mark start of the RW memory area for this
76 * .data must be placed at a lower address than the stacks if the stack
77 * protector is enabled. Alternatively, the .data.stack_protector_canary
78 * section can be placed independently of the main .data section.
93 * The .bss section gets initialised to 0 at runtime.
94 * Its base address should be 16-byte aligned for better performance of the
95 * zero-initialization code.
99 *(SORT_BY_ALIGNMENT(.bss*))
105 * The xlat_table section is for full, aligned page tables (4K).
106 * Removing them from .bss avoids forcing 4K alignment on
107 * the .bss section. The tables are initialized to zero by the translation
110 xlat_table (NOLOAD) : {
116 * The base address of the coherent memory section must be page-aligned (4K)
117 * to guarantee that the coherent data are stored on their own pages and
118 * are not mixed with normal data. This is required to set up the correct
119 * memory attributes for the coherent data page tables.
121 coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
122 __COHERENT_RAM_START__ = .;
124 __COHERENT_RAM_END_UNALIGNED__ = .;
126 * Memory page(s) mapped to this section will be marked
127 * as device memory. No other unexpected data must creep in.
128 * Ensure the rest of the current memory page is unused.
130 . = ALIGN(PAGE_SIZE);
131 __COHERENT_RAM_END__ = .;
136 * Define a linker symbol to mark end of the RW memory area for this
142 __BSS_SIZE__ = SIZEOF(.bss);
144 ASSERT(. <= BL2U_LIMIT, "BL2U image has exceeded its limit.")