diff options
| author | Raymond Mao <raymond.mao@linaro.org> | 2024-02-03 08:36:25 -0800 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2024-02-29 09:24:22 -0500 |
| commit | fc61de3ff66053e517946b2aee8ada9f2d510edc (patch) | |
| tree | eea95d4c4f71ca49d0a807a00d4086baaf11c81e | |
| parent | 11f3171256337dfb81ead526bb2dd78503839882 (diff) | |
arm: Get bloblist from boot arguments
Add arch custom function to get bloblist from boot arguments.
Check whether boot arguments aligns with the register conventions
defined in FW Handoff spec v0.9.
Signed-off-by: Raymond Mao <raymond.mao@linaro.org>
| -rw-r--r-- | arch/arm/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/lib/xferlist.c | 25 | ||||
| -rw-r--r-- | arch/arm/lib/xferlist.h | 19 |
3 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index b1bcd374662..67275fba616 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -85,6 +85,8 @@ obj-y += psci-dt.o obj-$(CONFIG_DEBUG_LL) += debug.o +obj-$(CONFIG_BLOBLIST) += xferlist.o + # For EABI conformant tool chains, provide eabi_compat() ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS))) extra-y += eabi_compat.o diff --git a/arch/arm/lib/xferlist.c b/arch/arm/lib/xferlist.c new file mode 100644 index 00000000000..f9c5d88bd47 --- /dev/null +++ b/arch/arm/lib/xferlist.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2023 Linaro Limited + * Author: Raymond Mao <raymond.mao@linaro.org> + */ +#include <linux/types.h> +#include <errno.h> +#include <bloblist.h> +#include "xferlist.h" + +int xferlist_from_boot_arg(ulong addr, ulong size) +{ + int ret; + + ret = bloblist_check(saved_args[3], size); + if (ret) + return ret; + + ret = bloblist_check_reg_conv(saved_args[0], saved_args[2], + saved_args[1]); + if (ret) + return ret; + + return bloblist_reloc((void *)addr, size); +} diff --git a/arch/arm/lib/xferlist.h b/arch/arm/lib/xferlist.h new file mode 100644 index 00000000000..60d79c1a8eb --- /dev/null +++ b/arch/arm/lib/xferlist.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause */ +/* + * Copyright (C) 2023 Linaro Limited + * Author: Raymond Mao <raymond.mao@linaro.org> + */ + +#ifndef _XFERLIST_H_ +#define _XFERLIST_H_ + +/* + * Boot parameters saved from start.S + * saved_args[0]: FDT base address + * saved_args[1]: Bloblist signature + * saved_args[2]: must be 0 + * saved_args[3]: Bloblist base address + */ +extern unsigned long saved_args[]; + +#endif /* _XFERLIST_H_ */ |