1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef BOOT_COMPRESSED_MISC_H 3 #define BOOT_COMPRESSED_MISC_H 4 5 /* 6 * Special hack: we have to be careful, because no indirections are allowed here, 7 * and paravirt_ops is a kind of one. As it will only run in baremetal anyway, 8 * we just keep it from happening. (This list needs to be extended when new 9 * paravirt and debugging variants are added.) 10 */ 11 #undef CONFIG_PARAVIRT 12 #undef CONFIG_PARAVIRT_XXL 13 #undef CONFIG_PARAVIRT_SPINLOCKS 14 #undef CONFIG_KASAN 15 16 /* cpu_feature_enabled() cannot be used this early */ 17 #define USE_EARLY_PGTABLE_L5 18 19 #include <linux/linkage.h> 20 #include <linux/screen_info.h> 21 #include <linux/elf.h> 22 #include <linux/io.h> 23 #include <asm/page.h> 24 #include <asm/boot.h> 25 #include <asm/bootparam.h> 26 27 #define BOOT_CTYPE_H 28 #include <linux/acpi.h> 29 30 #define BOOT_BOOT_H 31 #include "../ctype.h" 32 33 #ifdef CONFIG_X86_64 34 #define memptr long 35 #else 36 #define memptr unsigned 37 #endif 38 39 /* misc.c */ 40 extern memptr free_mem_ptr; 41 extern memptr free_mem_end_ptr; 42 extern struct boot_params *boot_params; 43 void __putstr(const char *s); 44 void __puthex(unsigned long value); 45 #define error_putstr(__x) __putstr(__x) 46 #define error_puthex(__x) __puthex(__x) 47 48 #ifdef CONFIG_X86_VERBOSE_BOOTUP 49 50 #define debug_putstr(__x) __putstr(__x) 51 #define debug_puthex(__x) __puthex(__x) 52 #define debug_putaddr(__x) { \ 53 debug_putstr(#__x ": 0x"); \ 54 debug_puthex((unsigned long)(__x)); \ 55 debug_putstr("\n"); \ 56 } 57 58 #else 59 60 static inline void debug_putstr(const char *s) 61 { } 62 static inline void debug_puthex(unsigned long value) 63 { } 64 #define debug_putaddr(x) /* */ 65 66 #endif 67 68 /* cmdline.c */ 69 int cmdline_find_option(const char *option, char *buffer, int bufsize); 70 int cmdline_find_option_bool(const char *option); 71 72 struct mem_vector { 73 unsigned long long start; 74 unsigned long long size; 75 }; 76 77 #if CONFIG_RANDOMIZE_BASE 78 /* kaslr.c */ 79 void choose_random_location(unsigned long input, 80 unsigned long input_size, 81 unsigned long *output, 82 unsigned long output_size, 83 unsigned long *virt_addr); 84 /* cpuflags.c */ 85 bool has_cpuflag(int flag); 86 #else 87 static inline void choose_random_location(unsigned long input, 88 unsigned long input_size, 89 unsigned long *output, 90 unsigned long output_size, 91 unsigned long *virt_addr) 92 { 93 } 94 #endif 95 96 #ifdef CONFIG_X86_64 97 void initialize_identity_maps(void); 98 void add_identity_map(unsigned long start, unsigned long size); 99 void finalize_identity_maps(void); 100 extern unsigned char _pgtable[]; 101 #else 102 static inline void initialize_identity_maps(void) 103 { } 104 static inline void add_identity_map(unsigned long start, unsigned long size) 105 { } 106 static inline void finalize_identity_maps(void) 107 { } 108 #endif 109 110 #ifdef CONFIG_EARLY_PRINTK 111 /* early_serial_console.c */ 112 extern int early_serial_base; 113 void console_init(void); 114 #else 115 static const int early_serial_base; 116 static inline void console_init(void) 117 { } 118 #endif 119 120 void set_sev_encryption_mask(void); 121 122 /* acpi.c */ 123 #ifdef CONFIG_ACPI 124 acpi_physical_address get_rsdp_addr(void); 125 #else 126 static inline acpi_physical_address get_rsdp_addr(void) { return 0; } 127 #endif 128 129 #if defined(CONFIG_RANDOMIZE_BASE) && defined(CONFIG_MEMORY_HOTREMOVE) && defined(CONFIG_ACPI) 130 extern struct mem_vector immovable_mem[MAX_NUMNODES*2]; 131 int count_immovable_mem_regions(void); 132 #else 133 static inline int count_immovable_mem_regions(void) { return 0; } 134 #endif 135 136 #endif /* BOOT_COMPRESSED_MISC_H */ 137