diff options
author | Thomas Fitzsimmons <fitzsim@fitzsim.org> | 2018-06-09 00:59:45 +0300 |
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committer | Tom Rini <trini@konsulko.com> | 2018-07-10 23:55:57 +0300 |
commit | 894c3ad27fa940beb7fdc07d01dcfe81c03d0481 (patch) | |
tree | 72abb68850e0fc01f0fd0c6f0c2152afda435ffd /include/configs/bcmstb.h | |
parent | d154ca60036f060375ff3d80b2f1fbd2cd7de115 (diff) | |
download | u-boot-894c3ad27fa940beb7fdc07d01dcfe81c03d0481.tar.xz |
board: arm: Add support for Broadcom BCM7445
Add support for loading U-Boot on the Broadcom 7445 SoC. This port
assumes Broadcom's BOLT bootloader is acting as the second stage
bootloader, and U-Boot is acting as the third stage bootloader, loaded
as an ELF program by BOLT.
Signed-off-by: Thomas Fitzsimmons <fitzsim@fitzsim.org>
Cc: Stefan Roese <sr@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Diffstat (limited to 'include/configs/bcmstb.h')
-rw-r--r-- | include/configs/bcmstb.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/include/configs/bcmstb.h b/include/configs/bcmstb.h new file mode 100644 index 0000000000..8c6178042e --- /dev/null +++ b/include/configs/bcmstb.h @@ -0,0 +1,183 @@ +/* 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 */ |