1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright (c) 2015-2020, Linaro Limited 4 * Copyright (c) 2021, Arm Limited 5 */ 6 #ifndef __KERNEL_BOOT_H 7 #define __KERNEL_BOOT_H 8 9 #include <initcall.h> 10 #include <types_ext.h> 11 12 /* 13 * struct boot_embdata - Embedded boot data 14 * @total_len: Total length of the embedded boot data 15 * @num_blobs: Number of blobs in the embedded boot data, always 2 even if 16 * one blob is empty 17 * @hashes_offset: Offset of hashes from start of this struct 18 * @hashes_len: Length of hashes 19 * @reloc_offset: Offset of reloc from start of this struct 20 * @reloc_len: Length of reloc 21 * 22 * This struct is initialized by scripts/gen_tee_bin.py and must be kept 23 * in sync with that script. The struct and the following data is loaded 24 * at different addresses at boot depending on CFG_WITH_PAGER. 25 * 26 * If configured with CFG_WITH_PAGER=y the struct with data is following 27 * init part, this is together with the init part moved by the primary CPU 28 * so it ends up at __init_end. Whatever need to be saved for later need to 29 * be copied to a safe location in init_runtime(). 30 * 31 * If configured with CFG_WITH_PAGER=n following the struct with data is 32 * __data_end, this is moved by the primary CPU so it ends up at __end. 33 */ 34 struct boot_embdata { 35 uint32_t total_len; 36 uint32_t num_blobs; 37 uint32_t hashes_offset; 38 uint32_t hashes_len; 39 uint32_t reloc_offset; 40 uint32_t reloc_len; 41 }; 42 43 extern uint8_t embedded_secure_dtb[]; 44 extern const struct core_mmu_config boot_mmu_config; 45 46 /* @nsec_entry is unused if using CFG_WITH_ARM_TRUSTED_FW */ 47 void boot_init_primary_early(unsigned long pageable_part, 48 unsigned long nsec_entry); 49 void boot_init_primary_late(unsigned long fdt); 50 void boot_init_memtag(void); 51 52 void __panic_at_smc_return(void) __noreturn; 53 54 #if defined(CFG_WITH_ARM_TRUSTED_FW) 55 unsigned long cpu_on_handler(unsigned long a0, unsigned long a1); 56 unsigned long boot_cpu_on_handler(unsigned long a0, unsigned long a1); 57 #else 58 void boot_init_secondary(unsigned long nsec_entry); 59 #endif 60 61 void main_init_gic(void); 62 void main_secondary_init_gic(void); 63 64 void init_sec_mon(unsigned long nsec_entry); 65 void init_tee_runtime(void); 66 67 /* weak routines eventually overridden by platform */ 68 void plat_cpu_reset_early(void); 69 void plat_primary_init_early(void); 70 unsigned long plat_get_aslr_seed(void); 71 unsigned long plat_get_freq(void); 72 void arm_cl2_config(vaddr_t pl310); 73 void arm_cl2_enable(vaddr_t pl310); 74 75 #if defined(CFG_BOOT_SECONDARY_REQUEST) 76 void boot_set_core_ns_entry(size_t core_idx, uintptr_t entry, 77 uintptr_t context_id); 78 79 int boot_core_release(size_t core_idx, paddr_t entry); 80 struct ns_entry_context *boot_core_hpen(void); 81 #endif 82 83 /* Returns embedded DTB if present, then external DTB if found, then NULL */ 84 void *get_dt(void); 85 86 /* Returns embedded DTB location if present, otherwise NULL */ 87 void *get_embedded_dt(void); 88 89 /* Returns external DTB if present, otherwise NULL */ 90 void *get_external_dt(void); 91 92 /* 93 * get_aslr_seed() - return a random seed for core ASLR 94 * @fdt: Pointer to a device tree if CFG_DT_ADDR=y 95 * 96 * This function has a __weak default implementation. 97 */ 98 unsigned long get_aslr_seed(void *fdt); 99 100 /* Returns true if passed DTB is same as Embedded DTB, otherwise false */ 101 static inline bool is_embedded_dt(void *fdt) 102 { 103 return fdt && fdt == get_embedded_dt(); 104 } 105 106 #endif /* __KERNEL_BOOT_H */ 107