arm-trusted-firmware/bl32/sp_min/sp_min.ld.S

/*
 * Copyright (c) 2016-2023, 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(elf32-littlearm)
OUTPUT_ARCH(arm)
ENTRY(sp_min_vector_table)

MEMORY {
    RAM (rwx): ORIGIN = BL32_BASE, LENGTH = BL32_LIMIT - BL32_BASE
}

#ifdef PLAT_SP_MIN_EXTRA_LD_SCRIPT
#   include <plat_sp_min.ld.S>
#endif /* PLAT_SP_MIN_EXTRA_LD_SCRIPT */

SECTIONS {
    RAM_REGION_START = ORIGIN(RAM);
    RAM_REGION_LENGTH = LENGTH(RAM);
    . = BL32_BASE;

    ASSERT(. == ALIGN(PAGE_SIZE),
        "BL32_BASE address is not aligned on a page boundary.")

#if SEPARATE_CODE_AND_RODATA
    .text . : {
        ASSERT(. == ALIGN(PAGE_SIZE),
        ".text address is not aligned on a page boundary.");

        __TEXT_START__ = .;

        *entrypoint.o(.text*)
        *(SORT_BY_ALIGNMENT(.text*))
        *(.vectors)
        __TEXT_END_UNALIGNED__ = .;

        . = ALIGN(PAGE_SIZE);

        __TEXT_END__ = .;
    } >RAM

    /* .ARM.extab and .ARM.exidx are only added because Clang needs them */
    .ARM.extab . : {
        *(.ARM.extab* .gnu.linkonce.armextab.*)
    } >RAM

    .ARM.exidx . : {
        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
    } >RAM

    .rodata . : {
        __RODATA_START__ = .;
        *(SORT_BY_ALIGNMENT(.rodata*))

        RODATA_COMMON

        . = ALIGN(8);

#   include <lib/el3_runtime/pubsub_events.h>
        __RODATA_END_UNALIGNED__ = .;

        . = ALIGN(PAGE_SIZE);

        __RODATA_END__ = .;
    } >RAM
#else /* SEPARATE_CODE_AND_RODATA */
    .ro . : {
        ASSERT(. == ALIGN(PAGE_SIZE),
        ".ro address is not aligned on a page boundary.");

        __RO_START__ = .;

        *entrypoint.o(.text*)
        *(SORT_BY_ALIGNMENT(.text*))
        *(SORT_BY_ALIGNMENT(.rodata*))

        RODATA_COMMON

        . = ALIGN(8);

#   include <lib/el3_runtime/pubsub_events.h>

        *(.vectors)

        __RO_END_UNALIGNED__ = .;

        /*
         * Memory page(s) mapped to this section will be marked as device
         * memory. No other unexpected data must creep in. Ensure that the rest
         * of the current memory page is unused.
         */
        . = ALIGN(PAGE_SIZE);

        __RO_END__ = .;
    } >RAM
#endif /* SEPARATE_CODE_AND_RODATA */

    ASSERT(__CPU_OPS_END__ > __CPU_OPS_START__,
        "cpu_ops not defined for this platform.")

    __RW_START__ = .;

    DATA_SECTION >RAM
    RELA_SECTION >RAM

#ifdef BL32_PROGBITS_LIMIT
    ASSERT(. <= BL32_PROGBITS_LIMIT, "BL32 progbits has exceeded its limit.")
#endif /* BL32_PROGBITS_LIMIT */

    STACK_SECTION >RAM
    BSS_SECTION >RAM
    XLAT_TABLE_SECTION >RAM

    __BSS_SIZE__ = SIZEOF(.bss);

#if USE_COHERENT_MEM
    /*
     * The base address of the coherent memory section must be page-aligned 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 that the rest
         * of the current memory page is unused.
         */
        . = ALIGN(PAGE_SIZE);

        __COHERENT_RAM_END__ = .;
    } >RAM

    __COHERENT_RAM_UNALIGNED_SIZE__ =
        __COHERENT_RAM_END_UNALIGNED__ - __COHERENT_RAM_START__;
#endif /* USE_COHERENT_MEM */

    __RW_END__ = .;
    __BL32_END__ = .;

    /DISCARD/ : {
        *(.dynsym .dynstr .hash .gnu.hash)
    }

    ASSERT(. <= BL32_LIMIT, "BL32 image has exceeded its limit.")
    RAM_REGION_END = .;
}