bur_am335x_common.h 3.5 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * bur_am335x_common.h
  4. *
  5. * common parts used by B&R AM335x based boards
  6. *
  7. * Copyright (C) 2016 Hannes Schmelzer <oe5hpm@oevsv.at> -
  8. * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
  9. */
  10. #ifndef __BUR_AM335X_COMMON_H__
  11. #define __BUR_AM335X_COMMON_H__
  12. /* ------------------------------------------------------------------------- */
  13. /* legacy #defines for non DM bur-board */
  14. #ifndef CONFIG_DM
  15. #define CONFIG_SYS_NS16550_SERIAL
  16. #define CONFIG_SYS_NS16550_REG_SIZE (-4)
  17. #define CONFIG_SYS_NS16550_CLK (48000000)
  18. #define CONFIG_SYS_NS16550_COM1 0x44e09000
  19. #define CONFIG_I2C
  20. #define CONFIG_SYS_I2C
  21. #endif /* CONFIG_DM */
  22. #define CONFIG_MAX_RAM_BANK_SIZE (1024 << 20) /* 1GB */
  23. /* Timer information */
  24. #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */
  25. #define CONFIG_SYS_TIMERBASE 0x48040000 /* Use Timer2 */
  26. #define CONFIG_POWER_TPS65217
  27. #include <asm/arch/omap.h>
  28. /*
  29. * SPL related defines. The Public RAM memory map the ROM defines the
  30. * area between 0x402F0400 and 0x4030B800 as a download area and
  31. * 0x4030B800 to 0x4030CE00 as a public stack area. The ROM also
  32. * supports X-MODEM loading via UART, and we leverage this and then use
  33. * Y-MODEM to load u-boot.img, when booted over UART. We must also include
  34. * the scratch space that U-Boot uses in SRAM.
  35. */
  36. #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \
  37. CONFIG_SPL_TEXT_BASE)
  38. /*
  39. * Since SPL did pll and ddr initialization for us,
  40. * we don't need to do it twice.
  41. */
  42. #if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_NOR_BOOT)
  43. #define CONFIG_SKIP_LOWLEVEL_INIT
  44. #endif /* !CONFIG_SPL_BUILD, ... */
  45. /*
  46. * Our DDR memory always starts at 0x80000000 and U-Boot shall have
  47. * relocated itself to higher in memory by the time this value is used.
  48. */
  49. #define CONFIG_SYS_LOAD_ADDR 0x80000000
  50. /*
  51. * ----------------------------------------------------------------------------
  52. * DDR information. We say (for simplicity) that we have 1 bank,
  53. * always, even when we have more. We always start at 0x80000000,
  54. * and we place the initial stack pointer in our SRAM.
  55. */
  56. #define CONFIG_SYS_SDRAM_BASE 0x80000000
  57. #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \
  58. GENERATED_GBL_DATA_SIZE)
  59. /*
  60. * Our platforms make use of SPL to initalize the hardware (primarily
  61. * memory) enough for full U-Boot to be loaded. We also support Falcon
  62. * Mode so that the Linux kernel can be booted directly from SPL
  63. * instead, if desired. We make use of the general SPL framework found
  64. * under common/spl/. Given our generally common memory map, we set a
  65. * number of related defaults and sizes here.
  66. */
  67. /*
  68. * Place the image at the start of the ROM defined image space.
  69. * We limit our size to the ROM-defined downloaded image area, and use the
  70. * rest of the space for stack. We load U-Boot itself into memory at
  71. * 0x80800000 for legacy reasons (to not conflict with older SPLs). We
  72. * have our BSS be placed 1MiB after this, to allow for the default
  73. * Linux kernel address of 0x80008000 to work, in the Falcon Mode case.
  74. * We have the SPL malloc pool at the end of the BSS area.
  75. *
  76. * ----------------------------------------------------------------------------
  77. */
  78. #define CONFIG_SPL_BSS_START_ADDR 0x80A00000
  79. #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */
  80. #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \
  81. CONFIG_SPL_BSS_MAX_SIZE)
  82. #define CONFIG_SYS_SPL_MALLOC_SIZE CONFIG_SYS_MALLOC_LEN
  83. /* General parts of the framework, required. */
  84. #endif /* ! __BUR_AM335X_COMMON_H__ */