123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183 |
- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * (C) Copyright 2018 Cisco Systems, Inc.
- *
- * Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
- *
- * Configuration settings for the Broadcom BCMSTB SoC family.
- */
- #ifndef __BCMSTB_H
- #define __BCMSTB_H
- #include "version.h"
- #include <linux/sizes.h>
- #include <asm/arch/prior_stage.h>
- /*
- * Generic board configuration.
- */
- #define CONFIG_SYS_GENERIC_BOARD
- /*
- * CPU configuration.
- */
- #define CONFIG_SKIP_LOWLEVEL_INIT
- /*
- * Memory configuration.
- *
- * The prior stage BOLT bootloader sets up memory for us.
- *
- * An example boot memory layout after loading everything is:
- *
- * 0x0000 8000 vmlinux.bin.gz
- * : [~31 MiB uncompressed max]
- * 0x01ef f000 FIT containing signed public key
- * : [~2 KiB in size]
- * 0x01f0 0000 DTB copied from prior-stage-provided region
- * : [~1 MiB max]
- * 0x0200 0000 FIT containing ramdisk and device tree
- * : initramfs.cpio.gz
- * : [~208 MiB uncompressed max, to CMA/bmem low address]
- * : [~80 MiB compressed max, to PSB low address]
- * : device tree binary
- * : [~60 KiB]
- * 0x0700 0000 Prior stage bootloader (PSB)
- * :
- * 0x0761 7000 Prior-stage-provided device tree binary (DTB)
- * : [~40 KiB in size]
- * 0x0f00 0000 Contiguous memory allocator (CMA/bmem) low address
- * :
- * 0x8010 0000 U-Boot code at ELF load address
- * : [~500 KiB in size, stripped]
- * 0xc000 0000 Top of RAM
- *
- * Setting gd->relocaddr to CONFIG_SYS_TEXT_BASE in dram_init_banksize
- * prevents U-Boot from relocating itself when it is run as an ELF
- * program by the prior stage bootloader.
- *
- * We want to keep the ramdisk and FDT in the FIT image in-place, to
- * accommodate stblinux's bmem and CMA regions. To accomplish this,
- * we set initrd_high and fdt_high to 0xffffffff, and the load and
- * entry addresses of the FIT ramdisk entry to 0x0.
- *
- * Overwriting the prior stage bootloader causes memory instability,
- * so the compressed initramfs needs to fit between the load address
- * and the PSB low address. In BOLT's default configuration this
- * limits the compressed size of the initramfs to approximately 80
- * MiB. However, BOLT can be configured to allow loading larger
- * initramfs images, in which case this limitation is eliminated.
- */
- #define CONFIG_NR_DRAM_BANKS 3
- #define CONFIG_SYS_SDRAM_BASE 0x00000000
- #define CONFIG_SYS_TEXT_BASE 0x80100000
- #define CONFIG_SYS_INIT_RAM_ADDR 0x80200000
- #define CONFIG_SYS_INIT_RAM_SIZE 0x100000
- #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_INIT_RAM_ADDR + \
- CONFIG_SYS_INIT_RAM_SIZE - \
- GENERATED_GBL_DATA_SIZE)
- #define CONFIG_SYS_MALLOC_LEN ((10 * 1024) << 10) /* 10 MiB */
- #define CONFIG_SYS_LOAD_ADDR 0x2000000
- /*
- * CONFIG_SYS_LOAD_ADDR - 1 MiB.
- */
- #define CONFIG_SYS_FDT_SAVE_ADDRESS 0x1f00000
- #define CONFIG_SYS_CBSIZE 512
- #define CONFIG_SYS_MAXARGS 32
- /*
- * Large kernel image bootm configuration.
- */
- #define CONFIG_SYS_BOOTM_LEN SZ_64M
- /*
- * NS16550 configuration.
- */
- #define V_NS16550_CLK 81000000
- #define CONFIG_SYS_NS16550
- #define CONFIG_SYS_NS16550_SERIAL
- #define CONFIG_SYS_NS16550_REG_SIZE (-4)
- #define CONFIG_SYS_NS16550_CLK V_NS16550_CLK
- /*
- * Serial console configuration.
- */
- #define CONFIG_SERIAL3 3
- #define CONFIG_BAUDRATE 115200
- #define CONFIG_SYS_BAUDRATE_TABLE {4800, 9600, 19200, 38400, 57600, \
- 115200}
- /*
- * Informational display configuration.
- */
- #define CONFIG_REVISION_TAG
- /*
- * Command configuration.
- */
- #define CONFIG_CMD_ASKENV
- #define CONFIG_CMD_CACHE
- #define CONFIG_CMD_EXT2
- #define CONFIG_CMD_SF
- #define CONFIG_CMD_SPI
- #define CONFIG_CMD_SF_TEST
- #define CONFIG_CMD_MMC
- /*
- * Flash configuration.
- */
- #define CONFIG_ST_SMI
- #define CONFIG_SPI_FLASH_STMICRO
- #define CONFIG_SPI_FLASH_MACRONIX
- /*
- * Filesystem configuration.
- */
- #define CONFIG_DOS_PARTITION
- #define CONFIG_CMD_EXT4
- #define CONFIG_FS_EXT4
- #define CONFIG_CMD_FS_GENERIC
- /*
- * Environment configuration.
- */
- #define CONFIG_SYS_REDUNDAND_ENVIRONMENT
- #define CONFIG_ENV_IS_IN_SPI_FLASH 1
- #define CONFIG_ENV_OFFSET 0x1e0000
- #define CONFIG_ENV_SIZE (64 << 10) /* 64 KiB */
- #define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
- #define CONFIG_ENV_OFFSET_REDUND (CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
- #define CONFIG_ENV_OVERWRITE
- /*
- * Save the prior stage provided DTB.
- */
- #define CONFIG_PREBOOT \
- "fdt addr ${fdtcontroladdr};" \
- "fdt move ${fdtcontroladdr} ${fdtsaveaddr};" \
- "fdt addr ${fdtsaveaddr};"
- /*
- * Enable in-place RFS with this initrd_high setting.
- */
- #define CONFIG_EXTRA_ENV_SETTINGS \
- "fdtsaveaddr=" __stringify(CONFIG_SYS_FDT_SAVE_ADDRESS) "\0" \
- "initrd_high=0xffffffff\0" \
- "fdt_high=0xffffffff\0"
- /*
- * Set fdtaddr to prior stage-provided DTB in board_late_init, when
- * writeable environment is available.
- */
- #define CONFIG_BOARD_LATE_INIT
- #define CONFIG_SYS_MAX_FLASH_BANKS 1
- #define CONFIG_DM_SPI 1
- #endif /* __BCMSTB_H */
|