1 .. SPDX-License-Identifier: GPL-2.0
2
3 =======================
4 Booting Linux/LoongArch
5 =======================
6
7 :Author: Yanteng Si <siyanteng@loongson.cn>
8 :Date: 18 Nov 2022
9
10 Information passed from BootLoader to kernel
11 ============================================
12
13 LoongArch supports ACPI and FDT. The informati
14 to the kernel includes the memmap, the initrd,
15 the ACPI/FDT tables, and so on.
16
17 The kernel is passed the following arguments o
18
19 - a0 = efi_boot: `efi_boot` is a flag in
20 this boot environment is fully UEFI-co
21
22 - a1 = cmdline: `cmdline` is a pointer t
23
24 - a2 = systemtable: `systemtable` points
25 All pointers involved at this stage ar
26
27 Header of Linux/LoongArch kernel images
28 =======================================
29
30 Linux/LoongArch kernel images are EFI images.
31 a 64-byte header structured like::
32
33 u32 MZ_MAGIC /* "MZ
34 u32 res0 = 0 /* Res
35 u64 kernel_entry /* Ker
36 u64 _end - _text /* Ker
37 u64 load_offset /* Ker
38 u64 res1 = 0 /* Res
39 u64 res2 = 0 /* Res
40 u64 res3 = 0 /* Res
41 u32 LINUX_PE_MAGIC /* Mag
42 u32 pe_header - _head /* Off
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