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/*
* Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <common/bl_common.ld.h>
#include <lib/xlat_tables/xlat_tables_defs.h>
OUTPUT_FORMAT(PLATFORM_LINKER_FORMAT)
OUTPUT_ARCH(PLATFORM_LINKER_ARCH)
ENTRY(bl31_entrypoint)
MEMORY {
RAM (rwx): ORIGIN = BL31_BASE, LENGTH = BL31_LIMIT - BL31_BASE
#if SEPARATE_NOBITS_REGION
NOBITS (rw!a): ORIGIN = BL31_NOBITS_BASE, LENGTH = BL31_NOBITS_LIMIT - BL31_NOBITS_BASE
#else
#define NOBITS RAM
#endif
}
#ifdef PLAT_EXTRA_LD_SCRIPT
#include <plat.ld.S>
#endif
SECTIONS
{
. = BL31_BASE;
ASSERT(. == ALIGN(PAGE_SIZE),
"BL31_BASE address is not aligned on a page boundary.")
__BL31_START__ = .;
#if SEPARATE_CODE_AND_RODATA
.text . : {
__TEXT_START__ = .;
*bl31_entrypoint.o(.text*)
*(SORT_BY_ALIGNMENT(SORT(.text*)))
*(.vectors)
. = ALIGN(PAGE_SIZE);
__TEXT_END__ = .;
} >RAM
.rodata . : {
__RODATA_START__ = .;
*(SORT_BY_ALIGNMENT(.rodata*))
#if PLAT_EXTRA_RODATA_INCLUDES
#include <plat.ld.rodata.inc>
#endif
RODATA_COMMON
/* Place pubsub sections for events */
. = ALIGN(8);
#include <lib/el3_runtime/pubsub_events.h>
. = ALIGN(PAGE_SIZE);
__RODATA_END__ = .;
} >RAM
#else
ro . : {
__RO_START__ = .;
*bl31_entrypoint.o(.text*)
*(SORT_BY_ALIGNMENT(.text*))
*(SORT_BY_ALIGNMENT(.rodata*))
RODATA_COMMON
/* Place pubsub sections for events */
. = ALIGN(8);
#include <lib/el3_runtime/pubsub_events.h>
*(.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__ = .;
} >RAM
#endif
ASSERT(__CPU_OPS_END__ > __CPU_OPS_START__,
"cpu_ops not defined for this platform.")
#if SPM_MM
#ifndef SPM_SHIM_EXCEPTIONS_VMA
#define SPM_SHIM_EXCEPTIONS_VMA RAM
#endif
/*
* Exception vectors of the SPM shim layer. They must be aligned to a 2K
* address, but we need to place them in a separate page so that we can set
* individual permissions to them, so the actual alignment needed is 4K.
*
* There's no need to include this into the RO section of BL31 because it
* doesn't need to be accessed by BL31.
*/
spm_shim_exceptions : ALIGN(PAGE_SIZE) {
__SPM_SHIM_EXCEPTIONS_START__ = .;
*(.spm_shim_exceptions)
. = ALIGN(PAGE_SIZE);
__SPM_SHIM_EXCEPTIONS_END__ = .;
} >SPM_SHIM_EXCEPTIONS_VMA AT>RAM
PROVIDE(__SPM_SHIM_EXCEPTIONS_LMA__ = LOADADDR(spm_shim_exceptions));
. = LOADADDR(spm_shim_exceptions) + SIZEOF(spm_shim_exceptions);
#endif
/*
* Define a linker symbol to mark start of the RW memory area for this
* image.
*/
__RW_START__ = . ;
DATA_SECTION >RAM
RELA_SECTION >RAM
#ifdef BL31_PROGBITS_LIMIT
ASSERT(. <= BL31_PROGBITS_LIMIT, "BL31 progbits has exceeded its limit.")
#endif
#if SEPARATE_NOBITS_REGION
/*
* Define a linker symbol to mark end of the RW memory area for this
* image.
*/
. = ALIGN(PAGE_SIZE);
__RW_END__ = .;
__BL31_END__ = .;
ASSERT(. <= BL31_LIMIT, "BL31 image has exceeded its limit.")
. = BL31_NOBITS_BASE;
ASSERT(. == ALIGN(PAGE_SIZE),
"BL31 NOBITS base address is not aligned on a page boundary.")
__NOBITS_START__ = .;
#endif
STACK_SECTION >NOBITS
BSS_SECTION >NOBITS
XLAT_TABLE_SECTION >NOBITS
#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__ = .;
/*
* Bakery locks are stored in coherent memory
*
* Each lock's data is contiguous and fully allocated by the compiler
*/
*(bakery_lock)
*(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__ = .;
} >NOBITS
#endif
#if SEPARATE_NOBITS_REGION
/*
* Define a linker symbol to mark end of the NOBITS memory area for this
* image.
*/
__NOBITS_END__ = .;
ASSERT(. <= BL31_NOBITS_LIMIT, "BL31 NOBITS region has exceeded its limit.")
#else
/*
* Define a linker symbol to mark end of the RW memory area for this
* image.
*/
__RW_END__ = .;
__BL31_END__ = .;
ASSERT(. <= BL31_LIMIT, "BL31 image has exceeded its limit.")
#endif
/DISCARD/ : {
*(.dynsym .dynstr .hash .gnu.hash)
}
}
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