| | 1 | /* |
| | 2 | * (C) Copyright 2001 |
| | 3 | * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. |
| | 4 | * |
| | 5 | * SPDX-License-Identifier: GPL-2.0+ |
| | 6 | */ |
| | 7 | |
| | 8 | #include <linux/kconfig.h> |
| | 9 | |
| | 10 | #ifndef __ASSEMBLY__ |
| | 11 | #define __ASSEMBLY__ /* Dirty trick to get only #defines */ |
| | 12 | #endif |
| | 13 | #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */ |
| | 14 | #include <config.h> |
| | 15 | #undef __ASSEMBLY__ |
| | 16 | #include <environment.h> |
| | 17 | #include <linux/stringify.h> |
| | 18 | |
| | 19 | /* Handle HOSTS that have prepended crap on symbol names, not TARGETS. */ |
| | 20 | #if defined(__APPLE__) |
| | 21 | /* Leading underscore on symbols */ |
| | 22 | # define SYM_CHAR "_" |
| | 23 | #else /* No leading character on symbols */ |
| | 24 | # define SYM_CHAR |
| | 25 | #endif |
| | 26 | |
| | 27 | /* |
| | 28 | * Generate embedded environment table |
| | 29 | * inside U-Boot image, if needed. |
| | 30 | */ |
| | 31 | #if defined(ENV_IS_EMBEDDED) || defined(CONFIG_BUILD_ENVCRC) |
| | 32 | /* |
| | 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 |
| | 36 | * U-Boot itself. |
| | 37 | */ |
| | 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"))) |
| | 43 | |
| | 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*/ |
| | 47 | |
| | 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"))) |
| | 52 | #endif |
| | 53 | |
| | 54 | /* |
| | 55 | * Macros to generate global absolutes. |
| | 56 | */ |
| | 57 | #if defined(__bfin__) |
| | 58 | # define GEN_SET_VALUE(name, value) \ |
| | 59 | asm(".set " GEN_SYMNAME(name) ", " GEN_VALUE(value)) |
| | 60 | #else |
| | 61 | # define GEN_SET_VALUE(name, value) \ |
| | 62 | asm(GEN_SYMNAME(name) " = " GEN_VALUE(value)) |
| | 63 | #endif |
| | 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) |
| | 69 | |
| | 70 | /* |
| | 71 | * Check to see if we are building with a |
| | 72 | * computed CRC. Otherwise define it as ~0. |
| | 73 | */ |
| | 74 | #if !defined(ENV_CRC) |
| | 75 | # define ENV_CRC (~0) |
| | 76 | #endif |
| | 77 | |
| | 78 | #define DEFAULT_ENV_INSTANCE_EMBEDDED |
| | 79 | #include <env_default.h> |
| | 80 | |
| | 81 | #ifdef CONFIG_ENV_ADDR_REDUND |
| | 82 | env_t redundand_environment __PPCENV__ = { |
| | 83 | 0, /* CRC Sum: invalid */ |
| | 84 | 0, /* Flags: invalid */ |
| | 85 | { |
| | 86 | "\0" |
| | 87 | } |
| | 88 | }; |
| | 89 | #endif /* CONFIG_ENV_ADDR_REDUND */ |
| | 90 | |
| | 91 | /* |
| | 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. |
| | 97 | * |
| | 98 | */ |
| | 99 | unsigned long env_size __PPCTEXT__ = sizeof(env_t); |
| | 100 | |
| | 101 | /* |
| | 102 | * Add in absolutes. |
| | 103 | */ |
| | 104 | GEN_ABS(env_offset, CONFIG_ENV_OFFSET); |
| | 105 | |
| | 106 | #endif /* ENV_IS_EMBEDDED */ |
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