diff options
| -rw-r--r-- | common/spl/Kconfig | 14 | ||||
| -rw-r--r-- | common/spl/Makefile | 1 | ||||
| -rw-r--r-- | common/spl/spl.c | 5 | ||||
| -rw-r--r-- | common/spl/spl_atf.c | 97 | ||||
| -rw-r--r-- | include/atf_common.h | 183 | ||||
| -rw-r--r-- | include/spl.h | 1 |
6 files changed, 301 insertions, 0 deletions
diff --git a/common/spl/Kconfig b/common/spl/Kconfig index f51ae2c484..e324e24b4f 100644 --- a/common/spl/Kconfig +++ b/common/spl/Kconfig @@ -693,6 +693,20 @@ config SPL_YMODEM_SUPPORT means of transmitting U-Boot over a serial line for using in SPL, with a checksum to ensure correctness. +config SPL_ATF_SUPPORT + bool "Support ARM Trusted Firmware" + depends on SPL && ARM64 + help + ATF(ARM Trusted Firmware) is a component for ARM arch64 which which + is loaded by SPL(which is considered as BL2 in ATF terminology). + More detail at: https://github.com/ARM-software/arm-trusted-firmware + +config SPL_ATF_TEXT_BASE + depends on SPL_ATF_SUPPORT + hex "ATF BL31 base address" + help + This is the base address in memory for ATF BL31 text and entry point. + config TPL_ENV_SUPPORT bool "Support an environment" depends on TPL diff --git a/common/spl/Makefile b/common/spl/Makefile index 1933cbdfed..b3b34d6277 100644 --- a/common/spl/Makefile +++ b/common/spl/Makefile @@ -20,6 +20,7 @@ endif obj-$(CONFIG_SPL_UBI) += spl_ubi.o obj-$(CONFIG_SPL_NET_SUPPORT) += spl_net.o obj-$(CONFIG_SPL_MMC_SUPPORT) += spl_mmc.o +obj-$(CONFIG_SPL_ATF_SUPPORT) += spl_atf.o obj-$(CONFIG_SPL_USB_SUPPORT) += spl_usb.o obj-$(CONFIG_SPL_FAT_SUPPORT) += spl_fat.o obj-$(CONFIG_SPL_EXT_SUPPORT) += spl_ext.o diff --git a/common/spl/spl.c b/common/spl/spl.c index df984b8efd..0a49766f21 100644 --- a/common/spl/spl.c +++ b/common/spl/spl.c @@ -415,6 +415,11 @@ void board_init_r(gd_t *dummy1, ulong dummy2) gd->malloc_ptr / 1024); #endif + if (IS_ENABLED(CONFIG_SPL_ATF_SUPPORT)) { + debug("loaded - jumping to U-Boot via ATF BL31.\n"); + bl31_entry(); + } + debug("loaded - jumping to U-Boot...\n"); spl_board_prepare_for_boot(); jump_to_image_no_args(&spl_image); diff --git a/common/spl/spl_atf.c b/common/spl/spl_atf.c new file mode 100644 index 0000000000..6e8f928044 --- /dev/null +++ b/common/spl/spl_atf.c @@ -0,0 +1,97 @@ +/* + * Reference to the ARM TF Project, + * plat/arm/common/arm_bl2_setup.c + * Portions copyright (c) 2013-2016, ARM Limited and Contributors. All rights + * reserved. + * Copyright (C) 2016 Rockchip Electronic Co.,Ltd + * Written by Kever Yang <kever.yang@rock-chips.com> + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <common.h> +#include <atf_common.h> +#include <errno.h> +#include <spl.h> + +static struct bl2_to_bl31_params_mem bl31_params_mem; +static struct bl31_params *bl2_to_bl31_params; + +/** + * bl2_plat_get_bl31_params() - prepare params for bl31. + * + * This function assigns a pointer to the memory that the platform has kept + * aside to pass platform specific and trusted firmware related information + * to BL31. This memory is allocated by allocating memory to + * bl2_to_bl31_params_mem structure which is a superset of all the + * structure whose information is passed to BL31 + * NOTE: This function should be called only once and should be done + * before generating params to BL31 + * + * @return bl31 params structure pointer + */ +struct bl31_params *bl2_plat_get_bl31_params(void) +{ + struct entry_point_info *bl33_ep_info; + + /* + * Initialise the memory for all the arguments that needs to + * be passed to BL31 + */ + memset(&bl31_params_mem, 0, sizeof(struct bl2_to_bl31_params_mem)); + + /* Assign memory for TF related information */ + bl2_to_bl31_params = &bl31_params_mem.bl31_params; + SET_PARAM_HEAD(bl2_to_bl31_params, ATF_PARAM_BL31, ATF_VERSION_1, 0); + + /* Fill BL31 related information */ + SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info, + ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0); + + /* Fill BL32 related information if it exists */ +#ifdef BL32_BASE + bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info; + SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info, ATF_PARAM_EP, + ATF_VERSION_1, 0); + bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info; + SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info, + ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0); +#endif /* BL32_BASE */ + + /* Fill BL33 related information */ + bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info; + bl33_ep_info = &bl31_params_mem.bl33_ep_info; + SET_PARAM_HEAD(bl33_ep_info, ATF_PARAM_EP, ATF_VERSION_1, + ATF_EP_NON_SECURE); + + /* BL33 expects to receive the primary CPU MPID (through x0) */ + bl33_ep_info->args.arg0 = 0xffff & read_mpidr(); + bl33_ep_info->pc = CONFIG_SYS_TEXT_BASE; + bl33_ep_info->spsr = SPSR_64(MODE_EL2, MODE_SP_ELX, + DISABLE_ALL_EXECPTIONS); + + bl2_to_bl31_params->bl33_image_info = &bl31_params_mem.bl33_image_info; + SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, + ATF_PARAM_IMAGE_BINARY, ATF_VERSION_1, 0); + + return bl2_to_bl31_params; +} + +void raw_write_daif(unsigned int daif) +{ + __asm__ __volatile__("msr DAIF, %0\n\t" : : "r" (daif) : "memory"); +} + +void bl31_entry(void) +{ + struct bl31_params *bl31_params; + void (*entry)(struct bl31_params *params, void *plat_params) = NULL; + + bl31_params = bl2_plat_get_bl31_params(); + entry = (void *)CONFIG_SPL_ATF_TEXT_BASE; + + raw_write_daif(SPSR_EXCEPTION_MASK); + dcache_disable(); + + entry(bl31_params, NULL); +} diff --git a/include/atf_common.h b/include/atf_common.h new file mode 100644 index 0000000000..8c513e7c3e --- /dev/null +++ b/include/atf_common.h @@ -0,0 +1,183 @@ +/* + * 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 + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#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 SET_PARAM_HEAD(_p, _type, _ver, _attr) do { \ + (_p)->h.type = (uint8_t)(_type); \ + (_p)->h.version = (uint8_t)(_ver); \ + (_p)->h.size = (uint16_t)sizeof(*_p); \ + (_p)->h.attr = (uint32_t)(_attr) ; \ + } while (0) + +#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; +}; + +/******************************************************************************* + * This structure represents the superset of information that is passed to + * BL31, e.g. while passing control to it from BL2, bl31_params + * and other platform specific params + ******************************************************************************/ +struct bl2_to_bl31_params_mem { + struct bl31_params bl31_params; + struct atf_image_info bl31_image_info; + struct atf_image_info bl32_image_info; + struct atf_image_info bl33_image_info; + struct entry_point_info bl33_ep_info; + struct entry_point_info bl32_ep_info; + struct entry_point_info bl31_ep_info; +}; + +#endif /*__ASSEMBLY__*/ + +#endif /* __BL_COMMON_H__ */ diff --git a/include/spl.h b/include/spl.h index d1638e9d7c..ffadce93c7 100644 --- a/include/spl.h +++ b/include/spl.h @@ -267,4 +267,5 @@ int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr); int spl_mmc_load_image(struct spl_image_info *spl_image, struct spl_boot_device *bootdev); +void bl31_entry(void); #endif |