1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * ti_armv7_common.h 4 * 5 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ 6 * 7 * The various ARMv7 SoCs from TI all share a number of IP blocks when 8 * implementing a given feature. Rather than define these in every 9 * board or even SoC common file, we define a common file to be re-used 10 * in all cases. While technically true that some of these details are 11 * configurable at the board design, they are common throughout SoC 12 * reference platforms as well as custom designs and become de facto 13 * standards. 14 */ 15 16 #ifndef __CONFIG_TI_ARMV7_COMMON_H__ 17 #define __CONFIG_TI_ARMV7_COMMON_H__ 18 19 /* 20 * We setup defaults based on constraints from the Linux kernel, which should 21 * also be safe elsewhere. We have the default load at 32MB into DDR (for 22 * the kernel), FDT above 128MB (the maximum location for the end of the 23 * kernel), and the ramdisk 512KB above that (allowing for hopefully never 24 * seen large trees). We say all of this must be within the first 256MB 25 * as that will normally be within the kernel lowmem and thus visible via 26 * bootm_size and we only run on platforms with 256MB or more of memory. 27 * 28 * As a temporary storage for DTBO blobs (which should be applied into DTB 29 * blob), we use the location 15.5 MB above the ramdisk. If someone wants to 30 * use ramdisk bigger than 15.5 MB, then DTBO can be loaded and applied to DTB 31 * blob before loading the ramdisk, as DTBO location is only used as a temporary 32 * storage, and can be re-used after 'fdt apply' command is done. 33 */ 34 #define DEFAULT_LINUX_BOOT_ENV \ 35 "loadaddr=0x82000000\0" \ 36 "kernel_addr_r=0x82000000\0" \ 37 "fdtaddr=0x88000000\0" \ 38 "dtboaddr=0x89000000\0" \ 39 "fdt_addr_r=0x88000000\0" \ 40 "rdaddr=0x88080000\0" \ 41 "ramdisk_addr_r=0x88080000\0" \ 42 "scriptaddr=0x80000000\0" \ 43 "pxefile_addr_r=0x80100000\0" \ 44 "bootm_size=0x10000000\0" \ 45 "boot_fdt=try\0" 46 47 #define DEFAULT_FIT_TI_ARGS \ 48 "boot_fit=0\0" \ 49 "addr_fit=0x90000000\0" \ 50 "name_fit=fitImage\0" \ 51 "update_to_fit=setenv loadaddr ${addr_fit}; setenv bootfile ${name_fit}\0" \ 52 "get_overlaystring=" \ 53 "for overlay in $name_overlays;" \ 54 "do;" \ 55 "setenv overlaystring ${overlaystring}'#'${overlay};" \ 56 "done;\0" \ 57 "run_fit=bootm ${addr_fit}#${fdtfile}${overlaystring}\0" \ 58 59 /* 60 * DDR information. If the CONFIG_NR_DRAM_BANKS is not defined, 61 * we say (for simplicity) that we have 1 bank, always, even when 62 * we have more. We always start at 0x80000000, and we place the 63 * initial stack pointer in our SRAM. Otherwise, we can define 64 * CONFIG_NR_DRAM_BANKS before including this file. 65 */ 66 #define CONFIG_SYS_SDRAM_BASE 0x80000000 67 68 #ifndef CONFIG_SYS_INIT_SP_ADDR 69 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \ 70 GENERATED_GBL_DATA_SIZE) 71 #endif 72 73 /* Timer information. */ 74 #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */ 75 76 /* If DM_I2C, enable non-DM I2C support */ 77 78 /* 79 * The following are general good-enough settings for U-Boot. We set a 80 * large malloc pool as we generally have a lot of DDR, and we opt for 81 * function over binary size in the main portion of U-Boot as this is 82 * generally easily constrained later if needed. We enable the config 83 * options that give us information in the environment about what board 84 * we are on so we do not need to rely on the command prompt. We set a 85 * console baudrate of 115200 and use the default baud rate table. 86 */ 87 88 /* As stated above, the following choices are optional. */ 89 90 /* We set the max number of command args high to avoid HUSH bugs. */ 91 #define CONFIG_SYS_MAXARGS 64 92 93 /* Console I/O Buffer Size */ 94 #define CONFIG_SYS_CBSIZE 1024 95 /* Boot Argument Buffer Size */ 96 #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE 97 98 /* 99 * When we have SPI, NOR or NAND flash we expect to be making use of 100 * mtdparts, both for ease of use in U-Boot and for passing information 101 * on to the Linux kernel. 102 */ 103 104 /* 105 * Our platforms make use of SPL to initalize the hardware (primarily 106 * memory) enough for full U-Boot to be loaded. We make use of the general 107 * SPL framework found under common/spl/. Given our generally common memory 108 * map, we set a number of related defaults and sizes here. 109 */ 110 #if !defined(CONFIG_NOR_BOOT) && \ 111 !(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX)) 112 113 /* 114 * We also support Falcon Mode so that the Linux kernel can be booted 115 * directly from SPL. This is not currently available on HS devices. 116 */ 117 118 /* 119 * Place the image at the start of the ROM defined image space (per 120 * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined 121 * downloaded image area minus 1KiB for scratch space. We initalize DRAM as 122 * soon as we can so that we can place stack, malloc and BSS there. We load 123 * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict 124 * with older SPLs). We have our BSS be placed 2MiB after this, to allow for 125 * the default Linux kernel address of 0x80008000 to work with most sized 126 * kernels, in the Falcon Mode case. We have the SPL malloc pool at the end 127 * of the BSS area. We suggest that the stack be placed at 32MiB after the 128 * start of DRAM to allow room for all of the above (handled in Kconfig). 129 */ 130 #ifndef CONFIG_SPL_BSS_START_ADDR 131 #define CONFIG_SPL_BSS_START_ADDR 0x80a00000 132 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */ 133 #endif 134 #ifndef CONFIG_SYS_SPL_MALLOC_START 135 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \ 136 CONFIG_SPL_BSS_MAX_SIZE) 137 #define CONFIG_SYS_SPL_MALLOC_SIZE SZ_8M 138 #endif 139 #ifndef CONFIG_SPL_MAX_SIZE 140 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \ 141 CONFIG_SPL_TEXT_BASE) 142 #endif 143 144 145 /* FAT sd card locations. */ 146 #ifndef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME 147 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img" 148 #endif 149 150 #ifdef CONFIG_SPL_OS_BOOT 151 /* FAT */ 152 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage" 153 #define CONFIG_SPL_FS_LOAD_ARGS_NAME "args" 154 155 /* RAW SD card / eMMC */ 156 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1700 /* address 0x2E0000 */ 157 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x1500 /* address 0x2A0000 */ 158 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0x200 /* 256KiB */ 159 #endif 160 161 /* General parts of the framework, required. */ 162 163 #ifdef CONFIG_MTD_RAW_NAND 164 #define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE 165 #endif 166 #endif /* !CONFIG_NOR_BOOT */ 167 168 /* Generic Environment Variables */ 169 170 #ifdef CONFIG_CMD_NET 171 #define NETARGS \ 172 "static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \ 173 "::off\0" \ 174 "nfsopts=nolock\0" \ 175 "rootpath=/export/rootfs\0" \ 176 "netloadimage=tftp ${loadaddr} ${bootfile}\0" \ 177 "netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \ 178 "netargs=setenv bootargs console=${console} " \ 179 "${optargs} " \ 180 "root=/dev/nfs " \ 181 "nfsroot=${serverip}:${rootpath},${nfsopts} rw " \ 182 "ip=dhcp\0" \ 183 "netboot=echo Booting from network ...; " \ 184 "setenv autoload no; " \ 185 "dhcp; " \ 186 "run netloadimage; " \ 187 "run netloadfdt; " \ 188 "run netargs; " \ 189 "bootz ${loadaddr} - ${fdtaddr}\0" 190 #else 191 #define NETARGS "" 192 #endif 193 194 #endif /* __CONFIG_TI_ARMV7_COMMON_H__ */ 195