| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * ti_armv7_common.h |
| * |
| * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ |
| * |
| * The various ARMv7 SoCs from TI all share a number of IP blocks when |
| * implementing a given feature. Rather than define these in every |
| * board or even SoC common file, we define a common file to be re-used |
| * in all cases. While technically true that some of these details are |
| * configurable at the board design, they are common throughout SoC |
| * reference platforms as well as custom designs and become de facto |
| * standards. |
| */ |
| |
| #ifndef __CONFIG_TI_ARMV7_COMMON_H__ |
| #define __CONFIG_TI_ARMV7_COMMON_H__ |
| |
| /* Support both device trees and ATAGs. */ |
| #define CONFIG_CMDLINE_TAG |
| #define CONFIG_SETUP_MEMORY_TAGS |
| #define CONFIG_INITRD_TAG |
| |
| /* |
| * Our DDR memory always starts at 0x80000000 and U-Boot shall have |
| * relocated itself to higher in memory by the time this value is used. |
| * However, set this to a 32MB offset to allow for easier Linux kernel |
| * booting as the default is often used as the kernel load address. |
| */ |
| #define CONFIG_SYS_LOAD_ADDR 0x82000000 |
| |
| /* |
| * We setup defaults based on constraints from the Linux kernel, which should |
| * also be safe elsewhere. We have the default load at 32MB into DDR (for |
| * the kernel), FDT above 128MB (the maximum location for the end of the |
| * kernel), and the ramdisk 512KB above that (allowing for hopefully never |
| * seen large trees). We say all of this must be within the first 256MB |
| * as that will normally be within the kernel lowmem and thus visible via |
| * bootm_size and we only run on platforms with 256MB or more of memory. |
| * |
| * As a temporary storage for DTBO blobs (which should be applied into DTB |
| * blob), we use the location 15.5 MB above the ramdisk. If someone wants to |
| * use ramdisk bigger than 15.5 MB, then DTBO can be loaded and applied to DTB |
| * blob before loading the ramdisk, as DTBO location is only used as a temporary |
| * storage, and can be re-used after 'fdt apply' command is done. |
| */ |
| #define DEFAULT_LINUX_BOOT_ENV \ |
| "loadaddr=0x82000000\0" \ |
| "kernel_addr_r=0x82000000\0" \ |
| "fdtaddr=0x88000000\0" \ |
| "dtboaddr=0x89000000\0" \ |
| "fdt_addr_r=0x88000000\0" \ |
| "rdaddr=0x88080000\0" \ |
| "ramdisk_addr_r=0x88080000\0" \ |
| "scriptaddr=0x80000000\0" \ |
| "pxefile_addr_r=0x80100000\0" \ |
| "bootm_size=0x10000000\0" \ |
| "boot_fdt=try\0" |
| |
| #define DEFAULT_FIT_TI_ARGS \ |
| "boot_fit=0\0" \ |
| "addr_fit=0x90000000\0" \ |
| "name_fit=fitImage\0" \ |
| "update_to_fit=setenv loadaddr ${addr_fit}; setenv bootfile ${name_fit}\0" \ |
| "get_overlaystring=" \ |
| "for overlay in $name_overlays;" \ |
| "do;" \ |
| "setenv overlaystring ${overlaystring}'#'${overlay};" \ |
| "done;\0" \ |
| "run_fit=bootm ${addr_fit}#${fdtfile}${overlaystring}\0" \ |
| |
| /* |
| * DDR information. If the CONFIG_NR_DRAM_BANKS is not defined, |
| * we say (for simplicity) that we have 1 bank, always, even when |
| * we have more. We always start at 0x80000000, and we place the |
| * initial stack pointer in our SRAM. Otherwise, we can define |
| * CONFIG_NR_DRAM_BANKS before including this file. |
| */ |
| #define CONFIG_SYS_SDRAM_BASE 0x80000000 |
| |
| #ifndef CONFIG_SYS_INIT_SP_ADDR |
| #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \ |
| GENERATED_GBL_DATA_SIZE) |
| #endif |
| |
| /* Timer information. */ |
| #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */ |
| |
| /* If DM_I2C, enable non-DM I2C support */ |
| |
| /* |
| * The following are general good-enough settings for U-Boot. We set a |
| * large malloc pool as we generally have a lot of DDR, and we opt for |
| * function over binary size in the main portion of U-Boot as this is |
| * generally easily constrained later if needed. We enable the config |
| * options that give us information in the environment about what board |
| * we are on so we do not need to rely on the command prompt. We set a |
| * console baudrate of 115200 and use the default baud rate table. |
| */ |
| #define CONFIG_SYS_MALLOC_LEN SZ_32M |
| |
| /* As stated above, the following choices are optional. */ |
| |
| /* We set the max number of command args high to avoid HUSH bugs. */ |
| #define CONFIG_SYS_MAXARGS 64 |
| |
| /* Console I/O Buffer Size */ |
| #define CONFIG_SYS_CBSIZE 1024 |
| /* Boot Argument Buffer Size */ |
| #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE |
| |
| /* |
| * When we have SPI, NOR or NAND flash we expect to be making use of |
| * mtdparts, both for ease of use in U-Boot and for passing information |
| * on to the Linux kernel. |
| */ |
| |
| /* |
| * Our platforms make use of SPL to initalize the hardware (primarily |
| * memory) enough for full U-Boot to be loaded. We make use of the general |
| * SPL framework found under common/spl/. Given our generally common memory |
| * map, we set a number of related defaults and sizes here. |
| */ |
| #if !defined(CONFIG_NOR_BOOT) && \ |
| !(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX)) |
| |
| /* |
| * We also support Falcon Mode so that the Linux kernel can be booted |
| * directly from SPL. This is not currently available on HS devices. |
| */ |
| |
| /* |
| * Place the image at the start of the ROM defined image space (per |
| * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined |
| * downloaded image area minus 1KiB for scratch space. We initalize DRAM as |
| * soon as we can so that we can place stack, malloc and BSS there. We load |
| * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict |
| * with older SPLs). We have our BSS be placed 2MiB after this, to allow for |
| * the default Linux kernel address of 0x80008000 to work with most sized |
| * kernels, in the Falcon Mode case. We have the SPL malloc pool at the end |
| * of the BSS area. We suggest that the stack be placed at 32MiB after the |
| * start of DRAM to allow room for all of the above (handled in Kconfig). |
| */ |
| #ifndef CONFIG_SPL_BSS_START_ADDR |
| #define CONFIG_SPL_BSS_START_ADDR 0x80a00000 |
| #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */ |
| #endif |
| #ifndef CONFIG_SYS_SPL_MALLOC_START |
| #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \ |
| CONFIG_SPL_BSS_MAX_SIZE) |
| #define CONFIG_SYS_SPL_MALLOC_SIZE SZ_8M |
| #endif |
| #ifndef CONFIG_SPL_MAX_SIZE |
| #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \ |
| CONFIG_SPL_TEXT_BASE) |
| #endif |
| |
| |
| /* FAT sd card locations. */ |
| #ifndef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME |
| #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img" |
| #endif |
| |
| #ifdef CONFIG_SPL_OS_BOOT |
| /* FAT */ |
| #define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage" |
| #define CONFIG_SPL_FS_LOAD_ARGS_NAME "args" |
| |
| /* RAW SD card / eMMC */ |
| #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1700 /* address 0x2E0000 */ |
| #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x1500 /* address 0x2A0000 */ |
| #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0x200 /* 256KiB */ |
| #endif |
| |
| /* General parts of the framework, required. */ |
| |
| #ifdef CONFIG_MTD_RAW_NAND |
| #define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE |
| #endif |
| #endif /* !CONFIG_NOR_BOOT */ |
| |
| /* Generic Environment Variables */ |
| |
| #ifdef CONFIG_CMD_NET |
| #define NETARGS \ |
| "static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \ |
| "::off\0" \ |
| "nfsopts=nolock\0" \ |
| "rootpath=/export/rootfs\0" \ |
| "netloadimage=tftp ${loadaddr} ${bootfile}\0" \ |
| "netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \ |
| "netargs=setenv bootargs console=${console} " \ |
| "${optargs} " \ |
| "root=/dev/nfs " \ |
| "nfsroot=${serverip}:${rootpath},${nfsopts} rw " \ |
| "ip=dhcp\0" \ |
| "netboot=echo Booting from network ...; " \ |
| "setenv autoload no; " \ |
| "dhcp; " \ |
| "run netloadimage; " \ |
| "run netloadfdt; " \ |
| "run netargs; " \ |
| "bootz ${loadaddr} - ${fdtaddr}\0" |
| #else |
| #define NETARGS "" |
| #endif |
| |
| #endif /* __CONFIG_TI_ARMV7_COMMON_H__ */ |