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LoongArch: Add FDT booting support from efi system table

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Since commit 40cd01a9c324("efi/loongarch: libstub: remove dependency on
flattened DT"), we can parse the FDT from efi system table.

And now, LoongArch is coming to support booting with FDT, so we add the
relevant booting support as well as parameter parsing.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Binbin Zhou
2022-12-10 22:40:05 +08:00
committed by Huacai Chen
parent a275a82dcd
commit 88d4d957ed
10 changed files with 145 additions and 7 deletions
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2
arch/loongarch/kernel/env.c
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@@ -11,6 +11,7 @@
#include <asm/early_ioremap.h>
#include <asm/bootinfo.h>
#include <asm/loongson.h>
#include <asm/setup.h>
u64 efi_system_table;
struct loongson_system_configuration loongson_sysconf;
@@ -27,6 +28,7 @@ void __init init_environ(void)
clear_bit(EFI_BOOT, &efi.flags);
strscpy(boot_command_line, cmdline, COMMAND_LINE_SIZE);
strscpy(init_command_line, cmdline, COMMAND_LINE_SIZE);
early_memunmap(cmdline, COMMAND_LINE_SIZE);
efi_system_table = fw_arg2;