diff options
| -rw-r--r-- | src/arch/loong64/Makefile | 1 | ||||
| -rw-r--r-- | src/arch/loong64/include/bits/nap.h | 4 | ||||
| -rw-r--r-- | src/arch/loong64/include/ipxe/efi/efiloong64_nap.h | 18 | ||||
| -rw-r--r-- | src/arch/loong64/interface/efi/efiloong64_nap.c | 53 |
4 files changed, 75 insertions, 1 deletions
diff --git a/src/arch/loong64/Makefile b/src/arch/loong64/Makefile index f2dfc76e9..fd0bf137f 100644 --- a/src/arch/loong64/Makefile +++ b/src/arch/loong64/Makefile @@ -20,6 +20,7 @@ CFLAGS += -fshort-wchar # LoongArch64-specific directories containing source files SRCDIRS += arch/loong64/core +SRCDIRS += arch/loong64/interface/efi # Include platform-specific Makefile MAKEDEPS += arch/loong64/Makefile.$(PLATFORM) diff --git a/src/arch/loong64/include/bits/nap.h b/src/arch/loong64/include/bits/nap.h index 91e255d96..2deba3558 100644 --- a/src/arch/loong64/include/bits/nap.h +++ b/src/arch/loong64/include/bits/nap.h @@ -9,4 +9,6 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); -#endif /* _BITS_MAP_H */ +#include <ipxe/efi/efiloong64_nap.h> + +#endif /* _BITS_NAP_H */ diff --git a/src/arch/loong64/include/ipxe/efi/efiloong64_nap.h b/src/arch/loong64/include/ipxe/efi/efiloong64_nap.h new file mode 100644 index 000000000..5c0d38636 --- /dev/null +++ b/src/arch/loong64/include/ipxe/efi/efiloong64_nap.h @@ -0,0 +1,18 @@ +#ifndef _IPXE_EFILOONG64_NAP_H +#define _IPXE_EFILOONG64_NAP_H + +/** @file + * + * EFI CPU sleeping + * + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +#ifdef NAP_EFILOONG64 +#define NAP_PREFIX_efiloong64 +#else +#define NAP_PREFIX_efiloong64 __efiloong64_ +#endif + +#endif /* _IPXE_EFILOONG64_NAP_H */ diff --git a/src/arch/loong64/interface/efi/efiloong64_nap.c b/src/arch/loong64/interface/efi/efiloong64_nap.c new file mode 100644 index 000000000..5cd1c1b94 --- /dev/null +++ b/src/arch/loong64/interface/efi/efiloong64_nap.c @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2023, Xiaotian Wu <wuxiaotian@loongson.cn> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + * You can also choose to distribute this program under the terms of + * the Unmodified Binary Distribution Licence (as given in the file + * COPYING.UBDL), provided that you have satisfied its requirements. + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +#include <ipxe/nap.h> +#include <ipxe/efi/efi.h> + +/** @file + * + * iPXE CPU sleeping API for EFI + * + */ + +/** + * Sleep until next interrupt + * + */ +static void efiloong64_cpu_nap ( void ) { + /* + * I can't find any EFI API that allows us to put the CPU to + * sleep. The CpuSleep() function is defined in CpuLib.h, but + * isn't part of any exposed protocol so we have no way to + * call it. + * + * The EFI shell doesn't seem to bother sleeping the CPU; it + * just sits there idly burning power. + * + */ + __asm__ __volatile__ ( "idle 0" ); +} + +PROVIDE_NAP ( efiloong64, cpu_nap, efiloong64_cpu_nap ); |