include/configs/bcmstb.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * (C) Copyright 2018  Cisco Systems, Inc.
   4  *
   5  * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
   6  *
   7  * Configuration settings for the Broadcom BCMSTB SoC family.
   8  */
   9
  10 #ifndef __BCMSTB_H
  11 #define __BCMSTB_H
  12
  13 #include "version.h"
  14 #include <linux/sizes.h>
  15 #include <asm/arch/prior_stage.h>
  16
  17 /*
  18  * Generic board configuration.
  19  */
  20 #define CONFIG_SYS_GENERIC_BOARD
  21
  22 /*
  23  * CPU configuration.
  24  */
  25 #define CONFIG_SKIP_LOWLEVEL_INIT
  26
  27 /*
  28  * Memory configuration.
  29  *
  30  * The prior stage BOLT bootloader sets up memory for us.
  31  *
  32  * An example boot memory layout after loading everything is:
  33  *
  34  *       0x0000 8000    vmlinux.bin.gz
  35  *             :        [~31 MiB uncompressed max]
  36  *       0x01ef f000    FIT containing signed public key
  37  *             :        [~2 KiB in size]
  38  *       0x01f0 0000    DTB copied from prior-stage-provided region
  39  *             :        [~1 MiB max]
  40  *       0x0200 0000    FIT containing ramdisk and device tree
  41  *             :          initramfs.cpio.gz
  42  *             :          [~208 MiB uncompressed max, to CMA/bmem low address]
  43  *             :          [~80 MiB compressed max, to PSB low address]
  44  *             :          device tree binary
  45  *             :          [~60 KiB]
  46  *       0x0700 0000    Prior stage bootloader (PSB)
  47  *             :
  48  *       0x0761 7000    Prior-stage-provided device tree binary (DTB)
  49  *             :        [~40 KiB in size]
  50  *       0x0f00 0000    Contiguous memory allocator (CMA/bmem) low address
  51  *             :
  52  *       0x8010 0000    U-Boot code at ELF load address
  53  *             :        [~500 KiB in size, stripped]
  54  *       0xc000 0000    Top of RAM
  55  *
  56  * Setting gd->relocaddr to CONFIG_SYS_TEXT_BASE in dram_init_banksize
  57  * prevents U-Boot from relocating itself when it is run as an ELF
  58  * program by the prior stage bootloader.
  59  *
  60  * We want to keep the ramdisk and FDT in the FIT image in-place, to
  61  * accommodate stblinux's bmem and CMA regions.  To accomplish this,
  62  * we set initrd_high and fdt_high to 0xffffffff, and the load and
  63  * entry addresses of the FIT ramdisk entry to 0x0.
  64  *
  65  * Overwriting the prior stage bootloader causes memory instability,
  66  * so the compressed initramfs needs to fit between the load address
  67  * and the PSB low address.  In BOLT's default configuration this
  68  * limits the compressed size of the initramfs to approximately 80
  69  * MiB.  However, BOLT can be configured to allow loading larger
  70  * initramfs images, in which case this limitation is eliminated.
  71  */
  72 #define CONFIG_NR_DRAM_BANKS            3
  73
  74 #define CONFIG_SYS_SDRAM_BASE           0x00000000
  75 #define CONFIG_SYS_TEXT_BASE            0x80100000
  76 #define CONFIG_SYS_INIT_RAM_ADDR        0x80200000
  77 #define CONFIG_SYS_INIT_RAM_SIZE        0x100000
  78 #define CONFIG_SYS_INIT_SP_ADDR         (CONFIG_SYS_INIT_RAM_ADDR +     \
  79                                          CONFIG_SYS_INIT_RAM_SIZE -     \
  80                                          GENERATED_GBL_DATA_SIZE)
  81 #define CONFIG_SYS_MALLOC_LEN           ((10 * 1024) << 10) /* 10 MiB */
  82 #define CONFIG_SYS_LOAD_ADDR            0x2000000
  83
  84 /*
  85  * CONFIG_SYS_LOAD_ADDR - 1 MiB.
  86  */
  87 #define CONFIG_SYS_FDT_SAVE_ADDRESS     0x1f00000
  88 #define CONFIG_SYS_CBSIZE               512
  89 #define CONFIG_SYS_MAXARGS              32
  90
  91 /*
  92  * Large kernel image bootm configuration.
  93  */
  94 #define CONFIG_SYS_BOOTM_LEN            SZ_64M
  95
  96 /*
  97  * NS16550 configuration.
  98  */
  99 #define V_NS16550_CLK                   81000000
 100
 101 #define CONFIG_SYS_NS16550
 102 #define CONFIG_SYS_NS16550_SERIAL
 103 #define CONFIG_SYS_NS16550_REG_SIZE     (-4)
 104 #define CONFIG_SYS_NS16550_CLK          V_NS16550_CLK
 105
 106 /*
 107  * Serial console configuration.
 108  */
 109 #define CONFIG_SERIAL3                  3
 110
 111 #define CONFIG_BAUDRATE                 115200
 112 #define CONFIG_SYS_BAUDRATE_TABLE       {4800, 9600, 19200, 38400, 57600, \
 113                                          115200}
 114
 115 /*
 116  * Informational display configuration.
 117  */
 118 #define CONFIG_REVISION_TAG
 119
 120 /*
 121  * Command configuration.
 122  */
 123 #define CONFIG_CMD_ASKENV
 124 #define CONFIG_CMD_CACHE
 125 #define CONFIG_CMD_EXT2
 126 #define CONFIG_CMD_SF
 127 #define CONFIG_CMD_SPI
 128 #define CONFIG_CMD_SF_TEST
 129 #define CONFIG_CMD_MMC
 130
 131 /*
 132  * Flash configuration.
 133  */
 134 #define CONFIG_ST_SMI
 135 #define CONFIG_SPI_FLASH_STMICRO
 136 #define CONFIG_SPI_FLASH_MACRONIX
 137
 138 /*
 139  * Filesystem configuration.
 140  */
 141 #define CONFIG_DOS_PARTITION
 142 #define CONFIG_CMD_EXT4
 143 #define CONFIG_FS_EXT4
 144 #define CONFIG_CMD_FS_GENERIC
 145
 146 /*
 147  * Environment configuration.
 148  */
 149 #define CONFIG_SYS_REDUNDAND_ENVIRONMENT
 150
 151 #define CONFIG_ENV_IS_IN_SPI_FLASH      1
 152 #define CONFIG_ENV_OFFSET               0x1e0000
 153 #define CONFIG_ENV_SIZE                 (64 << 10) /* 64 KiB */
 154 #define CONFIG_ENV_SECT_SIZE            CONFIG_ENV_SIZE
 155 #define CONFIG_ENV_OFFSET_REDUND        (CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
 156 #define CONFIG_ENV_OVERWRITE
 157
 158 /*
 159  * Save the prior stage provided DTB.
 160  */
 161 #define CONFIG_PREBOOT                                  \
 162         "fdt addr ${fdtcontroladdr};"                   \
 163         "fdt move ${fdtcontroladdr} ${fdtsaveaddr};"    \
 164         "fdt addr ${fdtsaveaddr};"
 165 /*
 166  * Enable in-place RFS with this initrd_high setting.
 167  */
 168 #define CONFIG_EXTRA_ENV_SETTINGS                                       \
 169         "fdtsaveaddr=" __stringify(CONFIG_SYS_FDT_SAVE_ADDRESS) "\0"    \
 170         "initrd_high=0xffffffff\0"                                      \
 171         "fdt_high=0xffffffff\0"
 172
 173 /*
 174  * Set fdtaddr to prior stage-provided DTB in board_late_init, when
 175  * writeable environment is available.
 176  */
 177 #define CONFIG_BOARD_LATE_INIT
 178
 179 #define CONFIG_SYS_MAX_FLASH_BANKS 1
 180
 181 #define CONFIG_DM_SPI 1
 182
 183 #endif /* __BCMSTB_H */