env_embedded.c 5.7 KB

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  1. /*
  2. * (C) Copyright 2001
  3. * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
  4. *
  5. * See file CREDITS for list of people who contributed to this
  6. * project.
  7. *
  8. * This program is free software; you can redistribute it and/or
  9. * modify it under the terms of the GNU General Public License as
  10. * published by the Free Software Foundation; either version 2 of
  11. * the License, or (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. #ifndef __ASSEMBLY__
  24. #define __ASSEMBLY__ /* Dirty trick to get only #defines */
  25. #endif
  26. #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
  27. #include <config.h>
  28. #undef __ASSEMBLY__
  29. #include <environment.h>
  30. /*
  31. * Handle HOSTS that have prepended
  32. * crap on symbol names, not TARGETS.
  33. */
  34. #if defined(__APPLE__)
  35. /* Leading underscore on symbols */
  36. # define SYM_CHAR "_"
  37. #else /* No leading character on symbols */
  38. # define SYM_CHAR
  39. #endif
  40. /*
  41. * Generate embedded environment table
  42. * inside U-Boot image, if needed.
  43. */
  44. #if defined(ENV_IS_EMBEDDED)
  45. /*
  46. * Only put the environment in it's own section when we are building
  47. * U-Boot proper. The host based program "tools/envcrc" does not need
  48. * a seperate section. Note that ENV_CRC is only defined when building
  49. * U-Boot itself.
  50. */
  51. #if (defined(CONFIG_SYS_USE_PPCENV) || defined(CONFIG_NAND_U_BOOT)) && \
  52. defined(ENV_CRC) /* Environment embedded in U-Boot .ppcenv section */
  53. /* XXX - This only works with GNU C */
  54. # define __PPCENV__ __attribute__ ((section(".ppcenv")))
  55. # define __PPCTEXT__ __attribute__ ((section(".text")))
  56. #elif defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
  57. # define __PPCENV__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
  58. # define __PPCTEXT__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
  59. #else /* Environment is embedded in U-Boot's .text section */
  60. /* XXX - This only works with GNU C */
  61. # define __PPCENV__ __attribute__ ((section(".text")))
  62. # define __PPCTEXT__ __attribute__ ((section(".text")))
  63. #endif
  64. /*
  65. * Macros to generate global absolutes.
  66. */
  67. #if defined(__bfin__)
  68. # define GEN_SET_VALUE(name, value) asm (".set " GEN_SYMNAME(name) ", " GEN_VALUE(value))
  69. #else
  70. # define GEN_SET_VALUE(name, value) asm (GEN_SYMNAME(name) " = " GEN_VALUE(value))
  71. #endif
  72. #define GEN_SYMNAME(str) SYM_CHAR #str
  73. #define GEN_VALUE(str) #str
  74. #define GEN_ABS(name, value) \
  75. asm (".globl " GEN_SYMNAME(name)); \
  76. GEN_SET_VALUE(name, value)
  77. /*
  78. * Macros to transform values
  79. * into environment strings.
  80. */
  81. #define XMK_STR(x) #x
  82. #define MK_STR(x) XMK_STR(x)
  83. /*
  84. * Check to see if we are building with a
  85. * computed CRC. Otherwise define it as ~0.
  86. */
  87. #if !defined(ENV_CRC)
  88. # define ENV_CRC ~0
  89. #endif
  90. env_t environment __PPCENV__ = {
  91. ENV_CRC, /* CRC Sum */
  92. #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
  93. 1, /* Flags: valid */
  94. #endif
  95. {
  96. #if defined(CONFIG_BOOTARGS)
  97. "bootargs=" CONFIG_BOOTARGS "\0"
  98. #endif
  99. #if defined(CONFIG_BOOTCOMMAND)
  100. "bootcmd=" CONFIG_BOOTCOMMAND "\0"
  101. #endif
  102. #if defined(CONFIG_RAMBOOTCOMMAND)
  103. "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
  104. #endif
  105. #if defined(CONFIG_NFSBOOTCOMMAND)
  106. "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
  107. #endif
  108. #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
  109. "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
  110. #endif
  111. #if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
  112. "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
  113. #endif
  114. #ifdef CONFIG_LOADS_ECHO
  115. "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0"
  116. #endif
  117. #ifdef CONFIG_ETHADDR
  118. "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
  119. #endif
  120. #ifdef CONFIG_ETH1ADDR
  121. "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0"
  122. #endif
  123. #ifdef CONFIG_ETH2ADDR
  124. "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0"
  125. #endif
  126. #ifdef CONFIG_ETH3ADDR
  127. "eth3addr=" MK_STR(CONFIG_ETH3ADDR) "\0"
  128. #endif
  129. #ifdef CONFIG_ETH4ADDR
  130. "eth4addr=" MK_STR(CONFIG_ETH4ADDR) "\0"
  131. #endif
  132. #ifdef CONFIG_ETH5ADDR
  133. "eth5addr=" MK_STR(CONFIG_ETH5ADDR) "\0"
  134. #endif
  135. #ifdef CONFIG_ETHPRIME
  136. "ethprime=" CONFIG_ETHPRIME "\0"
  137. #endif
  138. #ifdef CONFIG_IPADDR
  139. "ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
  140. #endif
  141. #ifdef CONFIG_SERVERIP
  142. "serverip=" MK_STR(CONFIG_SERVERIP) "\0"
  143. #endif
  144. #ifdef CONFIG_SYS_AUTOLOAD
  145. "autoload=" CONFIG_SYS_AUTOLOAD "\0"
  146. #endif
  147. #ifdef CONFIG_ROOTPATH
  148. "rootpath=" MK_STR(CONFIG_ROOTPATH) "\0"
  149. #endif
  150. #ifdef CONFIG_GATEWAYIP
  151. "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0"
  152. #endif
  153. #ifdef CONFIG_NETMASK
  154. "netmask=" MK_STR(CONFIG_NETMASK) "\0"
  155. #endif
  156. #ifdef CONFIG_HOSTNAME
  157. "hostname=" MK_STR(CONFIG_HOSTNAME) "\0"
  158. #endif
  159. #ifdef CONFIG_BOOTFILE
  160. "bootfile=" MK_STR(CONFIG_BOOTFILE) "\0"
  161. #endif
  162. #ifdef CONFIG_LOADADDR
  163. "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0"
  164. #endif
  165. #ifdef CONFIG_PREBOOT
  166. "preboot=" CONFIG_PREBOOT "\0"
  167. #endif
  168. #ifdef CONFIG_CLOCKS_IN_MHZ
  169. "clocks_in_mhz=" "1" "\0"
  170. #endif
  171. #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
  172. "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0"
  173. #endif
  174. #ifdef CONFIG_EXTRA_ENV_SETTINGS
  175. CONFIG_EXTRA_ENV_SETTINGS
  176. #endif
  177. "\0" /* Term. env_t.data with 2 NULs */
  178. }
  179. };
  180. #ifdef CONFIG_ENV_ADDR_REDUND
  181. env_t redundand_environment __PPCENV__ = {
  182. 0, /* CRC Sum: invalid */
  183. 0, /* Flags: invalid */
  184. {
  185. "\0"
  186. }
  187. };
  188. #endif /* CONFIG_ENV_ADDR_REDUND */
  189. /*
  190. * These will end up in the .text section
  191. * if the environment strings are embedded
  192. * in the image. When this is used for
  193. * tools/envcrc, they are placed in the
  194. * .data/.sdata section.
  195. *
  196. */
  197. unsigned long env_size __PPCTEXT__ = sizeof(env_t);
  198. /*
  199. * Add in absolutes.
  200. */
  201. GEN_ABS(env_offset, CONFIG_ENV_OFFSET);
  202. #endif /* ENV_IS_EMBEDDED */