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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 17:43:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 17:43:51 +0000 |
| commit | be58c81aff4cd4c0ccf43dbd7998da4a6a08c03b (patch) | |
| tree | 779c248fb61c83f65d1f0dc867f2053d76b4e03a /lib/romlib/init.s | |
| parent | Initial commit. (diff) | |
| download | arm-trusted-firmware-be58c81aff4cd4c0ccf43dbd7998da4a6a08c03b.tar.xz arm-trusted-firmware-be58c81aff4cd4c0ccf43dbd7998da4a6a08c03b.zip | |
Adding upstream version 2.10.0+dfsg.upstream/2.10.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | lib/romlib/init.s | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/romlib/init.s b/lib/romlib/init.s new file mode 100644 index 0000000..2bea15b --- /dev/null +++ b/lib/romlib/init.s @@ -0,0 +1,36 @@ +/* + * 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 |