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_SPINLOCKS 13 #undef CONFIG_KASAN 14 15 /* cpu_feature_enabled() cannot be used this early */ 16 #define USE_EARLY_PGTABLE_L5 17 18 #include <linux/linkage.h> 19 #include <linux/screen_info.h> 20 #include <linux/elf.h> 21 #include <linux/io.h> 22 #include <asm/page.h> 23 #include <asm/boot.h> 24 #include <asm/bootparam.h> 25 #include <asm/bootparam_utils.h> 26 27 #define BOOT_BOOT_H 28 #include "../ctype.h" 29 30 #ifdef CONFIG_X86_64 31 #define memptr long 32 #else 33 #define memptr unsigned 34 #endif 35 36 /* misc.c */ 37 extern memptr free_mem_ptr; 38 extern memptr free_mem_end_ptr; 39 extern struct boot_params *boot_params; 40 void __putstr(const char *s); 41 void __puthex(unsigned long value); 42 #define error_putstr(__x) __putstr(__x) 43 #define error_puthex(__x) __puthex(__x) 44 45 #ifdef CONFIG_X86_VERBOSE_BOOTUP 46 47 #define debug_putstr(__x) __putstr(__x) 48 #define debug_puthex(__x) __puthex(__x) 49 #define debug_putaddr(__x) { \ 50 debug_putstr(#__x ": 0x"); \ 51 debug_puthex((unsigned long)(__x)); \ 52 debug_putstr("\n"); \ 53 } 54 55 #else 56 57 static inline void debug_putstr(const char *s) 58 { } 59 static inline void debug_puthex(const char *s) 60 { } 61 #define debug_putaddr(x) /* */ 62 63 #endif 64 65 #if CONFIG_EARLY_PRINTK || CONFIG_RANDOMIZE_BASE 66 /* cmdline.c */ 67 int cmdline_find_option(const char *option, char *buffer, int bufsize); 68 int cmdline_find_option_bool(const char *option); 69 #endif 70 71 72 #if CONFIG_RANDOMIZE_BASE 73 /* kaslr.c */ 74 void choose_random_location(unsigned long input, 75 unsigned long input_size, 76 unsigned long *output, 77 unsigned long output_size, 78 unsigned long *virt_addr); 79 /* cpuflags.c */ 80 bool has_cpuflag(int flag); 81 #else 82 static inline void choose_random_location(unsigned long input, 83 unsigned long input_size, 84 unsigned long *output, 85 unsigned long output_size, 86 unsigned long *virt_addr) 87 { 88 } 89 #endif 90 91 #ifdef CONFIG_X86_64 92 void initialize_identity_maps(void); 93 void add_identity_map(unsigned long start, unsigned long size); 94 void finalize_identity_maps(void); 95 extern unsigned char _pgtable[]; 96 #else 97 static inline void initialize_identity_maps(void) 98 { } 99 static inline void add_identity_map(unsigned long start, unsigned long size) 100 { } 101 static inline void finalize_identity_maps(void) 102 { } 103 #endif 104 105 #ifdef CONFIG_EARLY_PRINTK 106 /* early_serial_console.c */ 107 extern int early_serial_base; 108 void console_init(void); 109 #else 110 static const int early_serial_base; 111 static inline void console_init(void) 112 { } 113 #endif 114 115 void set_sev_encryption_mask(void); 116 117 #endif 118