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 * Only put the environment in it's own section when we are building
34 * U-Boot proper. The host based program "tools/envcrc" does not need
35 * a seperate section. Note that ENV_CRC is only defined when building
38 #if defined(CONFIG_SYS_USE_PPCENV) && \
39 defined(ENV_CRC) /* Environment embedded in U-Boot .ppcenv section */
40 /* XXX - This only works with GNU C */
41 # define __PPCENV__ __attribute__ ((section(".ppcenv")))
42 # define __PPCTEXT__ __attribute__ ((section(".text")))
44 #elif defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
45 # define __PPCENV__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
46 # define __PPCTEXT__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
48 #else /* Environment is embedded in U-Boot's .text section */
49 /* XXX - This only works with GNU C */
50 # define __PPCENV__ __attribute__ ((section(".text")))
51 # define __PPCTEXT__ __attribute__ ((section(".text")))
55 * Macros to generate global absolutes.
58 # define GEN_SET_VALUE(name, value) \
59 asm(".set " GEN_SYMNAME(name) ", " GEN_VALUE(value))
61 # define GEN_SET_VALUE(name, value) \
62 asm(GEN_SYMNAME(name) " = " GEN_VALUE(value))
64 #define GEN_SYMNAME(str) SYM_CHAR #str
65 #define GEN_VALUE(str) #str
66 #define GEN_ABS(name, value) \
67 asm(".globl " GEN_SYMNAME(name)); \
68 GEN_SET_VALUE(name, value)
71 * Check to see if we are building with a
72 * computed CRC. Otherwise define it as ~0.
78 #define DEFAULT_ENV_INSTANCE_EMBEDDED
79 #include <env_default.h>
81 #ifdef CONFIG_ENV_ADDR_REDUND
82 env_t redundand_environment __PPCENV__ = {
83 0, /* CRC Sum: invalid */
84 0, /* Flags: invalid */
89 #endif /* CONFIG_ENV_ADDR_REDUND */
92 * These will end up in the .text section
93 * if the environment strings are embedded
94 * in the image. When this is used for
95 * tools/envcrc, they are placed in the
96 * .data/.sdata section.
99 unsigned long env_size __PPCTEXT__ = sizeof(env_t);
104 GEN_ABS(env_offset, CONFIG_ENV_OFFSET);
106 #endif /* ENV_IS_EMBEDDED */