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- /*
- * Copyright (c) 2018, Arm Limited and Contributors. All rights reserved.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
- .globl rom_lib_init
- .extern __DATA_RAM_START__, __DATA_ROM_START__, __DATA_RAM_END__
- .extern memset, memcpy
- rom_lib_init:
- cmp w0, #1
- mov w0, #0
- b.le 1f
- ret
- 1: stp x29, x30, [sp, #-16]!
- adrp x0, __DATA_RAM_START__
- adrp x1, __DATA_ROM_START__
- add x1, x1, :lo12:__DATA_ROM_START__
- adrp x2, __DATA_RAM_END__
- add x2, x2, :lo12:__DATA_RAM_END__
- sub x2, x2, x0
- bl memcpy
- adrp x0,__BSS_START__
- add x0, x0, :lo12:__BSS_START__
- mov x1, #0
- adrp x2, __BSS_END__
- add x2, x2, :lo12:__BSS_END__
- sub x2, x2, x0
- bl memset
- ldp x29, x30, [sp], #16
- mov w0, #1
- ret
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