From baf57b8e8df1b7303f5bd0aaaa47a3eed4284439 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 21 Jun 2021 11:27:58 +0200 Subject: ARM: Add atf common support ARM trusted firmware has some common data structures passed to bl31. This patch imports the code supporting this taken from U-Boot. The defines and data structures are taken directly from U-Boot, the support code is heavily modified for the sake of readability. Signed-off-by: Sascha Hauer Link: https://lore.barebox.org/20210615141641.31577-9-s.hauer@pengutronix.de Link: https://lore.barebox.org/20210621092802.27275-9-s.hauer@pengutronix.de Signed-off-by: Sascha Hauer --- arch/arm/include/asm/atf_common.h | 163 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 163 insertions(+) create mode 100644 arch/arm/include/asm/atf_common.h (limited to 'arch/arm/include') diff --git a/arch/arm/include/asm/atf_common.h b/arch/arm/include/asm/atf_common.h new file mode 100644 index 0000000000..56e2d3ffaa --- /dev/null +++ b/arch/arm/include/asm/atf_common.h @@ -0,0 +1,163 @@ +/* SPDX-License-Identifier: BSD-3-Clause */ +/* + * This is from the ARM TF Project, + * Repository: https://github.com/ARM-software/arm-trusted-firmware.git + * File: include/common/bl_common.h + * Portions copyright (c) 2013-2016, ARM Limited and Contributors. All rights + * reserved. + * Copyright (C) 2016-2017 Rockchip Electronic Co.,Ltd + */ + +#ifndef __BL_COMMON_H__ +#define __BL_COMMON_H__ + +#define ATF_PARAM_EP 0x01 +#define ATF_PARAM_IMAGE_BINARY 0x02 +#define ATF_PARAM_BL31 0x03 + +#define ATF_VERSION_1 0x01 + +#define ATF_EP_SECURE 0x0 +#define ATF_EP_NON_SECURE 0x1 + +#define MODE_RW_SHIFT 0x4 +#define MODE_RW_MASK 0x1 +#define MODE_RW_64 0x0 +#define MODE_RW_32 0x1 + +#define MODE_EL_SHIFT 0x2 +#define MODE_EL_MASK 0x3 +#define MODE_EL3 0x3 +#define MODE_EL2 0x2 +#define MODE_EL1 0x1 +#define MODE_EL0 0x0 + +#define MODE_SP_SHIFT 0x0 +#define MODE_SP_MASK 0x1 +#define MODE_SP_EL0 0x0 +#define MODE_SP_ELX 0x1 + +#define SPSR_DAIF_SHIFT 6 +#define SPSR_DAIF_MASK 0x0f + +#define SPSR_64(el, sp, daif) \ + (MODE_RW_64 << MODE_RW_SHIFT | \ + ((el) & MODE_EL_MASK) << MODE_EL_SHIFT | \ + ((sp) & MODE_SP_MASK) << MODE_SP_SHIFT | \ + ((daif) & SPSR_DAIF_MASK) << SPSR_DAIF_SHIFT) + +#define SPSR_FIQ (1 << 6) +#define SPSR_IRQ (1 << 7) +#define SPSR_SERROR (1 << 8) +#define SPSR_DEBUG (1 << 9) +#define SPSR_EXCEPTION_MASK (SPSR_FIQ | SPSR_IRQ | SPSR_SERROR | SPSR_DEBUG) + +#define DAIF_FIQ_BIT (1<<0) +#define DAIF_IRQ_BIT (1<<1) +#define DAIF_ABT_BIT (1<<2) +#define DAIF_DBG_BIT (1<<3) +#define DISABLE_ALL_EXECPTIONS \ + (DAIF_FIQ_BIT | DAIF_IRQ_BIT | DAIF_ABT_BIT | DAIF_DBG_BIT) + +#ifndef __ASSEMBLY__ + +/******************************************************************************* + * Structure used for telling the next BL how much of a particular type of + * memory is available for its use and how much is already used. + ******************************************************************************/ +struct aapcs64_params { + unsigned long arg0; + unsigned long arg1; + unsigned long arg2; + unsigned long arg3; + unsigned long arg4; + unsigned long arg5; + unsigned long arg6; + unsigned long arg7; +}; + +/*************************************************************************** + * This structure provides version information and the size of the + * structure, attributes for the structure it represents + ***************************************************************************/ +struct param_header { + uint8_t type; /* type of the structure */ + uint8_t version; /* version of this structure */ + uint16_t size; /* size of this structure in bytes */ + uint32_t attr; /* attributes: unused bits SBZ */ +}; + +/***************************************************************************** + * This structure represents the superset of information needed while + * switching exception levels. The only two mechanisms to do so are + * ERET & SMC. Security state is indicated using bit zero of header + * attribute + * NOTE: BL1 expects entrypoint followed by spsr at an offset from the start + * of this structure defined by the macro `ENTRY_POINT_INFO_PC_OFFSET` while + * processing SMC to jump to BL31. + *****************************************************************************/ +struct entry_point_info { + struct param_header h; + uintptr_t pc; + uint32_t spsr; + struct aapcs64_params args; +}; + +/***************************************************************************** + * Image info binary provides information from the image loader that + * can be used by the firmware to manage available trusted RAM. + * More advanced firmware image formats can provide additional + * information that enables optimization or greater flexibility in the + * common firmware code + *****************************************************************************/ +struct atf_image_info { + struct param_header h; + uintptr_t image_base; /* physical address of base of image */ + uint32_t image_size; /* bytes read from image file */ +}; + +/***************************************************************************** + * The image descriptor struct definition. + *****************************************************************************/ +struct image_desc { + /* Contains unique image id for the image. */ + unsigned int image_id; + /* + * This member contains Image state information. + * Refer IMAGE_STATE_XXX defined above. + */ + unsigned int state; + uint32_t copied_size; /* image size copied in blocks */ + struct atf_image_info atf_image_info; + struct entry_point_info ep_info; +}; + +/******************************************************************************* + * This structure represents the superset of information that can be passed to + * BL31 e.g. while passing control to it from BL2. The BL32 parameters will be + * populated only if BL2 detects its presence. A pointer to a structure of this + * type should be passed in X0 to BL31's cold boot entrypoint. + * + * Use of this structure and the X0 parameter is not mandatory: the BL31 + * platform code can use other mechanisms to provide the necessary information + * about BL32 and BL33 to the common and SPD code. + * + * BL31 image information is mandatory if this structure is used. If either of + * the optional BL32 and BL33 image information is not provided, this is + * indicated by the respective image_info pointers being zero. + ******************************************************************************/ +struct bl31_params { + struct param_header h; + struct atf_image_info *bl31_image_info; + struct entry_point_info *bl32_ep_info; + struct atf_image_info *bl32_image_info; + struct entry_point_info *bl33_ep_info; + struct atf_image_info *bl33_image_info; +}; + +void bl31_entry(uintptr_t bl31_entry, uintptr_t bl32_entry, + uintptr_t bl33_entry, uintptr_t fdt_addr); + +#endif /*__ASSEMBLY__ */ + +#endif /* __BL_COMMON_H__ */ -- cgit v1.2.3