1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef BOOT_COMPRESSED_MISC_H
3 #define BOOT_COMPRESSED_MISC_H
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.)
11 #undef CONFIG_PARAVIRT
12 #undef CONFIG_PARAVIRT_XXL
13 #undef CONFIG_PARAVIRT_SPINLOCKS
15 #undef CONFIG_KASAN_GENERIC
17 /* cpu_feature_enabled() cannot be used this early */
18 #define USE_EARLY_PGTABLE_L5
20 #include <linux/linkage.h>
21 #include <linux/screen_info.h>
22 #include <linux/elf.h>
26 #include <asm/bootparam.h>
27 #include <asm/desc_defs.h>
30 #include <linux/acpi.h>
38 #define memptr unsigned
41 /* boot/compressed/vmlinux start and end markers */
42 extern char _head[], _end[];
45 extern memptr free_mem_ptr;
46 extern memptr free_mem_end_ptr;
47 extern struct boot_params *boot_params;
48 void __putstr(const char *s);
49 void __puthex(unsigned long value);
50 #define error_putstr(__x) __putstr(__x)
51 #define error_puthex(__x) __puthex(__x)
53 #ifdef CONFIG_X86_VERBOSE_BOOTUP
55 #define debug_putstr(__x) __putstr(__x)
56 #define debug_puthex(__x) __puthex(__x)
57 #define debug_putaddr(__x) { \
58 debug_putstr(#__x ": 0x"); \
59 debug_puthex((unsigned long)(__x)); \
65 static inline void debug_putstr(const char *s)
67 static inline void debug_puthex(unsigned long value)
69 #define debug_putaddr(x) /* */
74 int cmdline_find_option(const char *option, char *buffer, int bufsize);
75 int cmdline_find_option_bool(const char *option);
82 #ifdef CONFIG_RANDOMIZE_BASE
84 void choose_random_location(unsigned long input,
85 unsigned long input_size,
86 unsigned long *output,
87 unsigned long output_size,
88 unsigned long *virt_addr);
90 static inline void choose_random_location(unsigned long input,
91 unsigned long input_size,
92 unsigned long *output,
93 unsigned long output_size,
94 unsigned long *virt_addr)
100 bool has_cpuflag(int flag);
103 extern int set_page_decrypted(unsigned long address);
104 extern int set_page_encrypted(unsigned long address);
105 extern int set_page_non_present(unsigned long address);
106 extern unsigned char _pgtable[];
109 #ifdef CONFIG_EARLY_PRINTK
110 /* early_serial_console.c */
111 extern int early_serial_base;
112 void console_init(void);
114 static const int early_serial_base;
115 static inline void console_init(void)
119 void set_sev_encryption_mask(void);
121 #ifdef CONFIG_AMD_MEM_ENCRYPT
122 void sev_es_shutdown_ghcb(void);
123 extern bool sev_es_check_ghcb_fault(unsigned long address);
125 static inline void sev_es_shutdown_ghcb(void) { }
126 static inline bool sev_es_check_ghcb_fault(unsigned long address)
134 acpi_physical_address get_rsdp_addr(void);
136 static inline acpi_physical_address get_rsdp_addr(void) { return 0; }
139 #if defined(CONFIG_RANDOMIZE_BASE) && defined(CONFIG_MEMORY_HOTREMOVE) && defined(CONFIG_ACPI)
140 extern struct mem_vector immovable_mem[MAX_NUMNODES*2];
141 int count_immovable_mem_regions(void);
143 static inline int count_immovable_mem_regions(void) { return 0; }
147 #ifdef CONFIG_X86_5LEVEL
148 extern unsigned int __pgtable_l5_enabled, pgdir_shift, ptrs_per_p4d;
151 /* Used by PAGE_KERN* macros: */
152 extern pteval_t __default_kernel_pte_mask;
155 extern gate_desc boot_idt[BOOT_IDT_ENTRIES];
156 extern struct desc_ptr boot_idt_desc;
159 void cleanup_exception_handling(void);
161 static inline void cleanup_exception_handling(void) { }
164 /* IDT Entry Points */
165 void boot_page_fault(void);
166 void boot_stage1_vc(void);
167 void boot_stage2_vc(void);
169 unsigned long sev_verify_cbit(unsigned long cr3);
171 #endif /* BOOT_COMPRESSED_MISC_H */