3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
5 * SPDX-License-Identifier: GPL-2.0+
8 #include <linux/kconfig.h>
11 #define __ASSEMBLY__ /* Dirty trick to get only #defines */
13 #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
16 #include <environment.h>
17 #include <linux/stringify.h>
19 /* Handle HOSTS that have prepended crap on symbol names, not TARGETS. */
20 #if defined(__APPLE__)
21 /* Leading underscore on symbols */
23 #else /* No leading character on symbols */
28 * Generate embedded environment table
29 * inside U-Boot image, if needed.
31 #if defined(ENV_IS_EMBEDDED) || defined(CONFIG_BUILD_ENVCRC)
33 * Put the environment in the .text section when we are building
34 * U-Boot proper. The host based program "tools/envcrc" does not need
37 #if defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
38 # define __PPCENV__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
39 # define __PPCTEXT__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
41 #else /* Environment is embedded in U-Boot's .text section */
42 /* XXX - This only works with GNU C */
43 # define __PPCENV__ __attribute__ ((section(".text")))
44 # define __PPCTEXT__ __attribute__ ((section(".text")))
48 * Macros to generate global absolutes.
51 # define GEN_SET_VALUE(name, value) \
52 asm(".set " GEN_SYMNAME(name) ", " GEN_VALUE(value))
54 # define GEN_SET_VALUE(name, value) \
55 asm(GEN_SYMNAME(name) " = " GEN_VALUE(value))
57 #define GEN_SYMNAME(str) SYM_CHAR #str
58 #define GEN_VALUE(str) #str
59 #define GEN_ABS(name, value) \
60 asm(".globl " GEN_SYMNAME(name)); \
61 GEN_SET_VALUE(name, value)
64 * Check to see if we are building with a
65 * computed CRC. Otherwise define it as ~0.
71 #define DEFAULT_ENV_INSTANCE_EMBEDDED
72 #include <env_default.h>
74 #ifdef CONFIG_ENV_ADDR_REDUND
75 env_t redundand_environment __PPCENV__ = {
76 0, /* CRC Sum: invalid */
77 0, /* Flags: invalid */
82 #endif /* CONFIG_ENV_ADDR_REDUND */
85 * These will end up in the .text section
86 * if the environment strings are embedded
87 * in the image. When this is used for
88 * tools/envcrc, they are placed in the
89 * .data/.sdata section.
92 unsigned long env_size __PPCTEXT__ = sizeof(env_t);
97 GEN_ABS(env_offset, CONFIG_ENV_OFFSET);
99 #endif /* ENV_IS_EMBEDDED */