2 * Copyright (c) 2011 The Chromium OS Authors.
4 * SPDX-License-Identifier: GPL-2.0+
7 /* Taken from Linux kernel, commit f56c3196 */
9 #ifndef _ASM_GENERIC_SECTIONS_H_
10 #define _ASM_GENERIC_SECTIONS_H_
12 /* References to section boundaries */
14 extern char _text
[], _stext
[], _etext
[];
15 extern char _data
[], _sdata
[], _edata
[];
16 extern char __bss_start
[], __bss_stop
[];
17 extern char __init_begin
[], __init_end
[];
18 extern char _sinittext
[], _einittext
[];
19 extern char _end
[], _init
[];
20 extern char __per_cpu_load
[], __per_cpu_start
[], __per_cpu_end
[];
21 extern char __kprobes_text_start
[], __kprobes_text_end
[];
22 extern char __entry_text_start
[], __entry_text_end
[];
23 extern char __initdata_begin
[], __initdata_end
[];
24 extern char __start_rodata
[], __end_rodata
[];
26 /* Start and end of .ctors section - used for constructor calls. */
27 extern char __ctors_start
[], __ctors_end
[];
29 /* function descriptor handling (if any). Override
30 * in asm/sections.h */
31 #ifndef dereference_function_descriptor
32 #define dereference_function_descriptor(p) (p)
35 /* random extra sections (if any). Override
36 * in asm/sections.h */
37 #ifndef arch_is_kernel_text
38 static inline int arch_is_kernel_text(unsigned long addr
)
44 #ifndef arch_is_kernel_data
45 static inline int arch_is_kernel_data(unsigned long addr
)
51 /* U-Boot-specific things begin here */
53 /* Start of U-Boot text region */
54 extern char __text_start
[];
56 /* This marks the end of the text region which must be relocated */
57 extern char __image_copy_end
[];
60 * This is the U-Boot entry point - prior to relocation it should be same
63 extern void _start(void);
66 * ARM needs to use offsets for symbols, since the values of some symbols
67 * are not resolved prior to relocation (and are just 0). Maybe this can be
68 * resolved, or maybe other architectures are similar, iwc this should be
69 * promoted to an architecture option.
72 #define CONFIG_SYS_SYM_OFFSETS
75 #ifdef CONFIG_SYS_SYM_OFFSETS
76 /* Start/end of the relocation entries, as an offset from _start */
77 extern ulong _rel_dyn_start_ofs
;
78 extern ulong _rel_dyn_end_ofs
;
80 /* End of the region to be relocated, as an offset form _start */
81 extern ulong _image_copy_end_ofs
;
83 extern ulong _bss_start_ofs
; /* BSS start relative to _start */
84 extern ulong _bss_end_ofs
; /* BSS end relative to _start */
85 extern ulong _end_ofs
; /* end of image relative to _start */
87 extern ulong _TEXT_BASE
; /* code start */
89 #else /* don't use offsets: */
91 /* Exports from the Linker Script */
92 extern ulong __data_end
;
93 extern ulong __rel_dyn_start
;
94 extern ulong __rel_dyn_end
;
95 extern ulong __bss_end
;
97 extern ulong _TEXT_BASE
; /* code start */
101 #endif /* _ASM_GENERIC_SECTIONS_H_ */