projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| c609719b WD |
2 | /* |
| 3 | * (C) Copyright 2001 | |
| 4 | * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. | |
| c609719b WD |
5 | */ |
| 6 | ||
| f33f3e07 YS |
7 | #include <linux/kconfig.h> |
| 8 | ||
| dc17fb6d | 9 | #ifndef __ASSEMBLY__ |
| bd2a23ac | 10 | #define __ASSEMBLY__ /* Dirty trick to get only #defines */ |
| dc17fb6d | 11 | #endif |
| bd2a23ac | 12 | #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */ |
| c609719b | 13 | #include <config.h> |
| dc17fb6d | 14 | #undef __ASSEMBLY__ |
| c609719b | 15 | #include <environment.h> |
| 5368c55d | 16 | #include <linux/stringify.h> |
| c609719b | 17 | |
| bd2a23ac | 18 | /* Handle HOSTS that have prepended crap on symbol names, not TARGETS. */ |
| c609719b WD |
19 | #if defined(__APPLE__) |
| 20 | /* Leading underscore on symbols */ | |
| 21 | # define SYM_CHAR "_" | |
| 22 | #else /* No leading character on symbols */ | |
| 23 | # define SYM_CHAR | |
| 24 | #endif | |
| 25 | ||
| a747a7f3 WD |
26 | /* |
| 27 | * Generate embedded environment table | |
| 28 | * inside U-Boot image, if needed. | |
| 29 | */ | |
| c3eb3fe4 | 30 | #if defined(ENV_IS_EMBEDDED) || defined(CONFIG_BUILD_ENVCRC) |
| c609719b | 31 | /* |
| 7653942b | 32 | * Put the environment in the .text section when we are building |
| c609719b | 33 | * U-Boot proper. The host based program "tools/envcrc" does not need |
| 7653942b | 34 | * a seperate section. |
| c609719b | 35 | */ |
| 7653942b | 36 | #if defined(USE_HOSTCC) /* Native for 'tools/envcrc' */ |
| 23ac79ff | 37 | # define __UBOOT_ENV_SECTION__(name) /*XXX DO_NOT_DEL_THIS_COMMENT*/ |
| c609719b WD |
38 | |
| 39 | #else /* Environment is embedded in U-Boot's .text section */ | |
| 40 | /* XXX - This only works with GNU C */ | |
| 23ac79ff | 41 | # define __UBOOT_ENV_SECTION__(name) __attribute__ ((section(".text."#name))) |
| c609719b WD |
42 | #endif |
| 43 | ||
| 44 | /* | |
| 45 | * Macros to generate global absolutes. | |
| 46 | */ | |
| 4087bc88 | 47 | #if defined(__bfin__) |
| bd2a23ac IG |
48 | # define GEN_SET_VALUE(name, value) \ |
| 49 | asm(".set " GEN_SYMNAME(name) ", " GEN_VALUE(value)) | |
| 4087bc88 | 50 | #else |
| bd2a23ac IG |
51 | # define GEN_SET_VALUE(name, value) \ |
| 52 | asm(GEN_SYMNAME(name) " = " GEN_VALUE(value)) | |
| 53 | #endif | |
| 54 | #define GEN_SYMNAME(str) SYM_CHAR #str | |
| 55 | #define GEN_VALUE(str) #str | |
| 56 | #define GEN_ABS(name, value) \ | |
| 57 | asm(".globl " GEN_SYMNAME(name)); \ | |
| 58 | GEN_SET_VALUE(name, value) | |
| c609719b | 59 | |
| c609719b WD |
60 | /* |
| 61 | * Check to see if we are building with a | |
| 62 | * computed CRC. Otherwise define it as ~0. | |
| 63 | */ | |
| 64 | #if !defined(ENV_CRC) | |
| bd2a23ac | 65 | # define ENV_CRC (~0) |
| c609719b WD |
66 | #endif |
| 67 | ||
| ddd8418f JH |
68 | #define DEFAULT_ENV_INSTANCE_EMBEDDED |
| 69 | #include <env_default.h> | |
| 70 | ||
| 0e8d1586 | 71 | #ifdef CONFIG_ENV_ADDR_REDUND |
| 23ac79ff | 72 | env_t redundand_environment __UBOOT_ENV_SECTION__(redundand_environment) = { |
| c609719b WD |
73 | 0, /* CRC Sum: invalid */ |
| 74 | 0, /* Flags: invalid */ | |
| 75 | { | |
| 76 | "\0" | |
| 77 | } | |
| 78 | }; | |
| 0e8d1586 | 79 | #endif /* CONFIG_ENV_ADDR_REDUND */ |
| c609719b WD |
80 | |
| 81 | /* | |
| 82 | * These will end up in the .text section | |
| 83 | * if the environment strings are embedded | |
| 84 | * in the image. When this is used for | |
| 85 | * tools/envcrc, they are placed in the | |
| 86 | * .data/.sdata section. | |
| 87 | * | |
| 88 | */ | |
| 23ac79ff | 89 | unsigned long env_size __UBOOT_ENV_SECTION__(env_size) = sizeof(env_t); |
| c609719b WD |
90 | |
| 91 | /* | |
| 92 | * Add in absolutes. | |
| 93 | */ | |
| 0e8d1586 | 94 | GEN_ABS(env_offset, CONFIG_ENV_OFFSET); |
| a747a7f3 WD |
95 | |
| 96 | #endif /* ENV_IS_EMBEDDED */ |