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/*
* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <platform_def.h>
#include <lib/xlat_tables/xlat_tables_defs.h>
OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
ENTRY(bl2_entrypoint)
MEMORY {
#if BL2_IN_XIP_MEM
ROM (rx): ORIGIN = BL2_RO_BASE, LENGTH = BL2_RO_LIMIT - BL2_RO_BASE
RAM (rwx): ORIGIN = BL2_RW_BASE, LENGTH = BL2_RW_LIMIT - BL2_RW_BASE
#else
RAM (rwx): ORIGIN = BL2_BASE, LENGTH = BL2_LIMIT - BL2_BASE
#endif
}
#if !BL2_IN_XIP_MEM
#define ROM RAM
#endif
SECTIONS
{
#if BL2_IN_XIP_MEM
. = BL2_RO_BASE;
ASSERT(. == ALIGN(PAGE_SIZE),
"BL2_RO_BASE address is not aligned on a page boundary.")
#else
. = BL2_BASE;
ASSERT(. == ALIGN(PAGE_SIZE),
"BL2_BASE address is not aligned on a page boundary.")
#endif
#if SEPARATE_CODE_AND_RODATA
.text . : {
__TEXT_START__ = .;
__TEXT_RESIDENT_START__ = .;
*bl2_el3_entrypoint.o(.text*)
*(.text.asm.*)
__TEXT_RESIDENT_END__ = .;
*(.text*)
*(.vectors)
. = ALIGN(PAGE_SIZE);
__TEXT_END__ = .;
} >ROM
.rodata . : {
__RODATA_START__ = .;
*(.rodata*)
/* Ensure 8-byte alignment for descriptors and ensure inclusion */
. = ALIGN(8);
__PARSER_LIB_DESCS_START__ = .;
KEEP(*(.img_parser_lib_descs))
__PARSER_LIB_DESCS_END__ = .;
/*
* Ensure 8-byte alignment for cpu_ops so that its fields are also
* aligned. Also ensure cpu_ops inclusion.
*/
. = ALIGN(8);
__CPU_OPS_START__ = .;
KEEP(*(cpu_ops))
__CPU_OPS_END__ = .;
. = ALIGN(PAGE_SIZE);
__RODATA_END__ = .;
} >ROM
ASSERT(__TEXT_RESIDENT_END__ - __TEXT_RESIDENT_START__ <= PAGE_SIZE,
"Resident part of BL2 has exceeded its limit.")
#else
ro . : {
__RO_START__ = .;
__TEXT_RESIDENT_START__ = .;
*bl2_el3_entrypoint.o(.text*)
*(.text.asm.*)
__TEXT_RESIDENT_END__ = .;
*(.text*)
*(.rodata*)
/*
* Ensure 8-byte alignment for cpu_ops so that its fields are also
* aligned. Also ensure cpu_ops inclusion.
*/
. = ALIGN(8);
__CPU_OPS_START__ = .;
KEEP(*(cpu_ops))
__CPU_OPS_END__ = .;
/* Ensure 8-byte alignment for descriptors and ensure inclusion */
. = ALIGN(8);
__PARSER_LIB_DESCS_START__ = .;
KEEP(*(.img_parser_lib_descs))
__PARSER_LIB_DESCS_END__ = .;
*(.vectors)
__RO_END_UNALIGNED__ = .;
/*
* Memory page(s) mapped to this section will be marked as
* read-only, executable. No RW data from the next section must
* creep in. Ensure the rest of the current memory page is unused.
*/
. = ALIGN(PAGE_SIZE);
__RO_END__ = .;
} >ROM
#endif
ASSERT(__CPU_OPS_END__ > __CPU_OPS_START__,
"cpu_ops not defined for this platform.")
#if BL2_IN_XIP_MEM
. = BL2_RW_BASE;
ASSERT(BL2_RW_BASE == ALIGN(PAGE_SIZE),
"BL2_RW_BASE address is not aligned on a page boundary.")
#endif
/*
* Define a linker symbol to mark start of the RW memory area for this
* image.
*/
__RW_START__ = . ;
/*
* .data must be placed at a lower address than the stacks if the stack
* protector is enabled. Alternatively, the .data.stack_protector_canary
* section can be placed independently of the main .data section.
*/
.data . : {
__DATA_RAM_START__ = .;
*(.data*)
__DATA_RAM_END__ = .;
} >RAM AT>ROM
stacks (NOLOAD) : {
__STACKS_START__ = .;
*(tzfw_normal_stacks)
__STACKS_END__ = .;
} >RAM
/*
* The .bss section gets initialised to 0 at runtime.
* Its base address should be 16-byte aligned for better performance of the
* zero-initialization code.
*/
.bss : ALIGN(16) {
__BSS_START__ = .;
*(SORT_BY_ALIGNMENT(.bss*))
*(COMMON)
__BSS_END__ = .;
} >RAM
/*
* The xlat_table section is for full, aligned page tables (4K).
* Removing them from .bss avoids forcing 4K alignment on
* the .bss section. The tables are initialized to zero by the translation
* tables library.
*/
xlat_table (NOLOAD) : {
*(xlat_table)
} >RAM
#if USE_COHERENT_MEM
/*
* The base address of the coherent memory section must be page-aligned (4K)
* to guarantee that the coherent data are stored on their own pages and
* are not mixed with normal data. This is required to set up the correct
* memory attributes for the coherent data page tables.
*/
coherent_ram (NOLOAD) : ALIGN(PAGE_SIZE) {
__COHERENT_RAM_START__ = .;
*(tzfw_coherent_mem)
__COHERENT_RAM_END_UNALIGNED__ = .;
/*
* Memory page(s) mapped to this section will be marked
* as device memory. No other unexpected data must creep in.
* Ensure the rest of the current memory page is unused.
*/
. = ALIGN(PAGE_SIZE);
__COHERENT_RAM_END__ = .;
} >RAM
#endif
/*
* Define a linker symbol to mark end of the RW memory area for this
* image.
*/
__RW_END__ = .;
__BL2_END__ = .;
#if BL2_IN_XIP_MEM
__BL2_RAM_START__ = ADDR(.data);
__BL2_RAM_END__ = .;
__DATA_ROM_START__ = LOADADDR(.data);
__DATA_SIZE__ = SIZEOF(.data);
/*
* The .data section is the last PROGBITS section so its end marks the end
* of BL2's RO content in XIP memory..
*/
__BL2_ROM_END__ = __DATA_ROM_START__ + __DATA_SIZE__;
ASSERT(__BL2_ROM_END__ <= BL2_RO_LIMIT,
"BL2's RO content has exceeded its limit.")
#endif
__BSS_SIZE__ = SIZEOF(.bss);
#if USE_COHERENT_MEM
__COHERENT_RAM_UNALIGNED_SIZE__ =
__COHERENT_RAM_END_UNALIGNED__ - __COHERENT_RAM_START__;
#endif
#if BL2_IN_XIP_MEM
ASSERT(. <= BL2_RW_LIMIT, "BL2's RW content has exceeded its limit.")
#else
ASSERT(. <= BL2_LIMIT, "BL2 image has exceeded its limit.")
#endif
}
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