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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
| commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
| tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/riscv/purgatory/entry.S | |
| parent | Initial commit. (diff) | |
| download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip | |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/riscv/purgatory/entry.S')
| -rw-r--r-- | arch/riscv/purgatory/entry.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/riscv/purgatory/entry.S b/arch/riscv/purgatory/entry.S new file mode 100644 index 0000000000..0194f45541 --- /dev/null +++ b/arch/riscv/purgatory/entry.S @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * purgatory: Runs between two kernels + * + * Copyright (C) 2022 Huawei Technologies Co, Ltd. + * + * Author: Li Zhengyu (lizhengyu3@huawei.com) + * + */ + +.macro size, sym:req + .size \sym, . - \sym +.endm + +.text + +.globl purgatory_start +purgatory_start: + + lla sp, .Lstack + mv s0, a0 /* The hartid of the current hart */ + mv s1, a1 /* Phys address of the FDT image */ + + jal purgatory + + /* Start new image. */ + mv a0, s0 + mv a1, s1 + ld a2, riscv_kernel_entry + jr a2 + +size purgatory_start + +.align 4 + .rept 256 + .quad 0 + .endr +.Lstack: + +.data + +.globl riscv_kernel_entry +riscv_kernel_entry: + .quad 0 +size riscv_kernel_entry + +.end |