ti_armv7_common.h 7.4 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * ti_armv7_common.h
  4. *
  5. * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
  6. *
  7. * The various ARMv7 SoCs from TI all share a number of IP blocks when
  8. * implementing a given feature. Rather than define these in every
  9. * board or even SoC common file, we define a common file to be re-used
  10. * in all cases. While technically true that some of these details are
  11. * configurable at the board design, they are common throughout SoC
  12. * reference platforms as well as custom designs and become de facto
  13. * standards.
  14. */
  15. #ifndef __CONFIG_TI_ARMV7_COMMON_H__
  16. #define __CONFIG_TI_ARMV7_COMMON_H__
  17. /* Support both device trees and ATAGs. */
  18. #define CONFIG_CMDLINE_TAG
  19. #define CONFIG_SETUP_MEMORY_TAGS
  20. #define CONFIG_INITRD_TAG
  21. /*
  22. * Our DDR memory always starts at 0x80000000 and U-Boot shall have
  23. * relocated itself to higher in memory by the time this value is used.
  24. * However, set this to a 32MB offset to allow for easier Linux kernel
  25. * booting as the default is often used as the kernel load address.
  26. */
  27. #define CONFIG_SYS_LOAD_ADDR 0x82000000
  28. /*
  29. * We setup defaults based on constraints from the Linux kernel, which should
  30. * also be safe elsewhere. We have the default load at 32MB into DDR (for
  31. * the kernel), FDT above 128MB (the maximum location for the end of the
  32. * kernel), and the ramdisk 512KB above that (allowing for hopefully never
  33. * seen large trees). We say all of this must be within the first 256MB
  34. * as that will normally be within the kernel lowmem and thus visible via
  35. * bootm_size and we only run on platforms with 256MB or more of memory.
  36. *
  37. * As a temporary storage for DTBO blobs (which should be applied into DTB
  38. * blob), we use the location 15.5 MB above the ramdisk. If someone wants to
  39. * use ramdisk bigger than 15.5 MB, then DTBO can be loaded and applied to DTB
  40. * blob before loading the ramdisk, as DTBO location is only used as a temporary
  41. * storage, and can be re-used after 'fdt apply' command is done.
  42. */
  43. #define DEFAULT_LINUX_BOOT_ENV \
  44. "loadaddr=0x82000000\0" \
  45. "kernel_addr_r=0x82000000\0" \
  46. "fdtaddr=0x88000000\0" \
  47. "dtboaddr=0x89000000\0" \
  48. "fdt_addr_r=0x88000000\0" \
  49. "rdaddr=0x88080000\0" \
  50. "ramdisk_addr_r=0x88080000\0" \
  51. "scriptaddr=0x80000000\0" \
  52. "pxefile_addr_r=0x80100000\0" \
  53. "bootm_size=0x10000000\0" \
  54. "boot_fdt=try\0"
  55. #define DEFAULT_FIT_TI_ARGS \
  56. "boot_fit=0\0" \
  57. "addr_fit=0x90000000\0" \
  58. "name_fit=fitImage\0" \
  59. "update_to_fit=setenv loadaddr ${addr_fit}; setenv bootfile ${name_fit}\0" \
  60. "get_overlaystring=" \
  61. "for overlay in $name_overlays;" \
  62. "do;" \
  63. "setenv overlaystring ${overlaystring}'#'${overlay};" \
  64. "done;\0" \
  65. "run_fit=bootm ${addr_fit}#${fdtfile}${overlaystring}\0" \
  66. /*
  67. * DDR information. If the CONFIG_NR_DRAM_BANKS is not defined,
  68. * we say (for simplicity) that we have 1 bank, always, even when
  69. * we have more. We always start at 0x80000000, and we place the
  70. * initial stack pointer in our SRAM. Otherwise, we can define
  71. * CONFIG_NR_DRAM_BANKS before including this file.
  72. */
  73. #define CONFIG_SYS_SDRAM_BASE 0x80000000
  74. #ifndef CONFIG_SYS_INIT_SP_ADDR
  75. #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \
  76. GENERATED_GBL_DATA_SIZE)
  77. #endif
  78. /* Timer information. */
  79. #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */
  80. /* If DM_I2C, enable non-DM I2C support */
  81. #if !defined(CONFIG_DM_I2C)
  82. #define CONFIG_I2C
  83. #define CONFIG_SYS_I2C
  84. #endif
  85. /*
  86. * The following are general good-enough settings for U-Boot. We set a
  87. * large malloc pool as we generally have a lot of DDR, and we opt for
  88. * function over binary size in the main portion of U-Boot as this is
  89. * generally easily constrained later if needed. We enable the config
  90. * options that give us information in the environment about what board
  91. * we are on so we do not need to rely on the command prompt. We set a
  92. * console baudrate of 115200 and use the default baud rate table.
  93. */
  94. #define CONFIG_SYS_MALLOC_LEN SZ_32M
  95. /* As stated above, the following choices are optional. */
  96. /* We set the max number of command args high to avoid HUSH bugs. */
  97. #define CONFIG_SYS_MAXARGS 64
  98. /* Console I/O Buffer Size */
  99. #define CONFIG_SYS_CBSIZE 1024
  100. /* Boot Argument Buffer Size */
  101. #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
  102. /*
  103. * When we have SPI, NOR or NAND flash we expect to be making use of
  104. * mtdparts, both for ease of use in U-Boot and for passing information
  105. * on to the Linux kernel.
  106. */
  107. /*
  108. * Our platforms make use of SPL to initalize the hardware (primarily
  109. * memory) enough for full U-Boot to be loaded. We make use of the general
  110. * SPL framework found under common/spl/. Given our generally common memory
  111. * map, we set a number of related defaults and sizes here.
  112. */
  113. #if !defined(CONFIG_NOR_BOOT) && \
  114. !(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
  115. /*
  116. * We also support Falcon Mode so that the Linux kernel can be booted
  117. * directly from SPL. This is not currently available on HS devices.
  118. */
  119. /*
  120. * Place the image at the start of the ROM defined image space (per
  121. * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
  122. * downloaded image area minus 1KiB for scratch space. We initalize DRAM as
  123. * soon as we can so that we can place stack, malloc and BSS there. We load
  124. * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict
  125. * with older SPLs). We have our BSS be placed 2MiB after this, to allow for
  126. * the default Linux kernel address of 0x80008000 to work with most sized
  127. * kernels, in the Falcon Mode case. We have the SPL malloc pool at the end
  128. * of the BSS area. We suggest that the stack be placed at 32MiB after the
  129. * start of DRAM to allow room for all of the above (handled in Kconfig).
  130. */
  131. #ifndef CONFIG_SPL_BSS_START_ADDR
  132. #define CONFIG_SPL_BSS_START_ADDR 0x80a00000
  133. #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */
  134. #endif
  135. #ifndef CONFIG_SYS_SPL_MALLOC_START
  136. #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \
  137. CONFIG_SPL_BSS_MAX_SIZE)
  138. #define CONFIG_SYS_SPL_MALLOC_SIZE SZ_8M
  139. #endif
  140. #ifndef CONFIG_SPL_MAX_SIZE
  141. #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \
  142. CONFIG_SPL_TEXT_BASE)
  143. #endif
  144. /* FAT sd card locations. */
  145. #ifndef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
  146. #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img"
  147. #endif
  148. #ifdef CONFIG_SPL_OS_BOOT
  149. /* FAT */
  150. #define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage"
  151. #define CONFIG_SPL_FS_LOAD_ARGS_NAME "args"
  152. /* RAW SD card / eMMC */
  153. #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1700 /* address 0x2E0000 */
  154. #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x1500 /* address 0x2A0000 */
  155. #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0x200 /* 256KiB */
  156. #endif
  157. /* General parts of the framework, required. */
  158. #ifdef CONFIG_MTD_RAW_NAND
  159. #define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
  160. #endif
  161. #endif /* !CONFIG_NOR_BOOT */
  162. /* Generic Environment Variables */
  163. #ifdef CONFIG_CMD_NET
  164. #define NETARGS \
  165. "static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
  166. "::off\0" \
  167. "nfsopts=nolock\0" \
  168. "rootpath=/export/rootfs\0" \
  169. "netloadimage=tftp ${loadaddr} ${bootfile}\0" \
  170. "netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \
  171. "netargs=setenv bootargs console=${console} " \
  172. "${optargs} " \
  173. "root=/dev/nfs " \
  174. "nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
  175. "ip=dhcp\0" \
  176. "netboot=echo Booting from network ...; " \
  177. "setenv autoload no; " \
  178. "dhcp; " \
  179. "run netloadimage; " \
  180. "run netloadfdt; " \
  181. "run netargs; " \
  182. "bootz ${loadaddr} - ${fdtaddr}\0"
  183. #else
  184. #define NETARGS ""
  185. #endif
  186. #endif /* __CONFIG_TI_ARMV7_COMMON_H__ */