1 // SPDX-License-Identifier: GPL-2.0+
4 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
7 #include <linux/kconfig.h>
10 #define __ASSEMBLY__ /* Dirty trick to get only #defines */
12 #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
15 #include <env_internal.h>
16 #include <linux/stringify.h>
18 /* Handle HOSTS that have prepended crap on symbol names, not TARGETS. */
19 #if defined(__APPLE__)
20 /* Leading underscore on symbols */
22 #else /* No leading character on symbols */
27 * Generate embedded environment table
28 * inside U-Boot image, if needed.
30 #if defined(ENV_IS_EMBEDDED) || defined(CONFIG_BUILD_ENVCRC)
32 * Put the environment in the .text section when we are building
33 * U-Boot proper. The host based program "tools/envcrc" does not need
36 #if defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
37 # define __UBOOT_ENV_SECTION__(name) /*XXX DO_NOT_DEL_THIS_COMMENT*/
39 #else /* Environment is embedded in U-Boot's .text section */
40 /* XXX - This only works with GNU C */
41 # define __UBOOT_ENV_SECTION__(name) __attribute__ ((section(".text."#name)))
45 * Macros to generate global absolutes.
48 # define GEN_SET_VALUE(name, value) \
49 asm(".set " GEN_SYMNAME(name) ", " GEN_VALUE(value))
51 # define GEN_SET_VALUE(name, value) \
52 asm(GEN_SYMNAME(name) " = " GEN_VALUE(value))
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)
61 * Check to see if we are building with a
62 * computed CRC. Otherwise define it as ~0.
68 #define DEFAULT_ENV_INSTANCE_EMBEDDED
69 #include <env_default.h>
71 #ifdef CONFIG_ENV_ADDR_REDUND
72 env_t redundand_environment __UBOOT_ENV_SECTION__(redundand_environment) = {
73 0, /* CRC Sum: invalid */
74 0, /* Flags: invalid */
79 #endif /* CONFIG_ENV_ADDR_REDUND */
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.
89 unsigned long env_size __UBOOT_ENV_SECTION__(env_size) = sizeof(env_t);
94 GEN_ABS(env_offset, (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE));
96 #endif /* ENV_IS_EMBEDDED */