include/configs/bur_am335x_common.h

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