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 /* Support both device trees and ATAGs. */ 20 #define CONFIG_CMDLINE_TAG 21 #define CONFIG_SETUP_MEMORY_TAGS 22 #define CONFIG_INITRD_TAG 23 24 /* 25 * Our DDR memory always starts at 0x80000000 and U-Boot shall have 26 * relocated itself to higher in memory by the time this value is used. 27 * However, set this to a 32MB offset to allow for easier Linux kernel 28 * booting as the default is often used as the kernel load address. 29 */ 30 #define CONFIG_SYS_LOAD_ADDR 0x82000000 31 32 /* 33 * We setup defaults based on constraints from the Linux kernel, which should 34 * also be safe elsewhere. We have the default load at 32MB into DDR (for 35 * the kernel), FDT above 128MB (the maximum location for the end of the 36 * kernel), and the ramdisk 512KB above that (allowing for hopefully never 37 * seen large trees). We say all of this must be within the first 256MB 38 * as that will normally be within the kernel lowmem and thus visible via 39 * bootm_size and we only run on platforms with 256MB or more of memory. 40 */ 41 #define DEFAULT_LINUX_BOOT_ENV \ 42 "loadaddr=0x82000000\0" \ 43 "kernel_addr_r=0x82000000\0" \ 44 "fdtaddr=0x88000000\0" \ 45 "fdt_addr_r=0x88000000\0" \ 46 "rdaddr=0x88080000\0" \ 47 "ramdisk_addr_r=0x88080000\0" \ 48 "scriptaddr=0x80000000\0" \ 49 "pxefile_addr_r=0x80100000\0" \ 50 "bootm_size=0x10000000\0" \ 51 "boot_fdt=try\0" 52 53 #define DEFAULT_FIT_TI_ARGS \ 54 "boot_fit=0\0" \ 55 "fit_loadaddr=0x87000000\0" \ 56 "fit_bootfile=fitImage\0" \ 57 "update_to_fit=setenv loadaddr ${fit_loadaddr}; setenv bootfile ${fit_bootfile}\0" \ 58 "loadfit=run args_mmc; bootm ${loadaddr}#${fdtfile};\0" \ 59 60 /* 61 * DDR information. If the CONFIG_NR_DRAM_BANKS is not defined, 62 * we say (for simplicity) that we have 1 bank, always, even when 63 * we have more. We always start at 0x80000000, and we place the 64 * initial stack pointer in our SRAM. Otherwise, we can define 65 * CONFIG_NR_DRAM_BANKS before including this file. 66 */ 67 #define CONFIG_SYS_SDRAM_BASE 0x80000000 68 69 #ifndef CONFIG_SYS_INIT_SP_ADDR 70 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \ 71 GENERATED_GBL_DATA_SIZE) 72 #endif 73 74 /* Timer information. */ 75 #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */ 76 77 /* If DM_I2C, enable non-DM I2C support */ 78 #if !defined(CONFIG_DM_I2C) 79 #define CONFIG_I2C 80 #define CONFIG_SYS_I2C 81 #endif 82 83 /* 84 * The following are general good-enough settings for U-Boot. We set a 85 * large malloc pool as we generally have a lot of DDR, and we opt for 86 * function over binary size in the main portion of U-Boot as this is 87 * generally easily constrained later if needed. We enable the config 88 * options that give us information in the environment about what board 89 * we are on so we do not need to rely on the command prompt. We set a 90 * console baudrate of 115200 and use the default baud rate table. 91 */ 92 #define CONFIG_SYS_MALLOC_LEN SZ_32M 93 #define CONFIG_ENV_OVERWRITE /* Overwrite ethaddr / serial# */ 94 95 /* As stated above, the following choices are optional. */ 96 97 /* We set the max number of command args high to avoid HUSH bugs. */ 98 #define CONFIG_SYS_MAXARGS 64 99 100 /* Console I/O Buffer Size */ 101 #define CONFIG_SYS_CBSIZE 1024 102 /* Boot Argument Buffer Size */ 103 #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE 104 105 /* 106 * When we have SPI, NOR or NAND flash we expect to be making use of 107 * mtdparts, both for ease of use in U-Boot and for passing information 108 * on to the Linux kernel. 109 */ 110 111 /* 112 * Our platforms make use of SPL to initalize the hardware (primarily 113 * memory) enough for full U-Boot to be loaded. We make use of the general 114 * SPL framework found under common/spl/. Given our generally common memory 115 * map, we set a number of related defaults and sizes here. 116 */ 117 #if !defined(CONFIG_NOR_BOOT) && \ 118 !(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX)) 119 120 /* 121 * We also support Falcon Mode so that the Linux kernel can be booted 122 * directly from SPL. This is not currently available on HS devices. 123 */ 124 125 /* 126 * Place the image at the start of the ROM defined image space (per 127 * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined 128 * downloaded image area minus 1KiB for scratch space. We initalize DRAM as 129 * soon as we can so that we can place stack, malloc and BSS there. We load 130 * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict 131 * with older SPLs). We have our BSS be placed 2MiB after this, to allow for 132 * the default Linux kernel address of 0x80008000 to work with most sized 133 * kernels, in the Falcon Mode case. We have the SPL malloc pool at the end 134 * of the BSS area. We suggest that the stack be placed at 32MiB after the 135 * start of DRAM to allow room for all of the above (handled in Kconfig). 136 */ 137 #ifndef CONFIG_SPL_BSS_START_ADDR 138 #define CONFIG_SPL_BSS_START_ADDR 0x80a00000 139 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */ 140 #endif 141 #ifndef CONFIG_SYS_SPL_MALLOC_START 142 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \ 143 CONFIG_SPL_BSS_MAX_SIZE) 144 #define CONFIG_SYS_SPL_MALLOC_SIZE SZ_8M 145 #endif 146 #ifndef CONFIG_SPL_MAX_SIZE 147 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \ 148 CONFIG_SPL_TEXT_BASE) 149 #endif 150 151 152 /* FAT sd card locations. */ 153 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 1 154 #ifndef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME 155 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img" 156 #endif 157 158 #ifdef CONFIG_SPL_OS_BOOT 159 /* FAT */ 160 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage" 161 #define CONFIG_SPL_FS_LOAD_ARGS_NAME "args" 162 163 /* RAW SD card / eMMC */ 164 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1700 /* address 0x2E0000 */ 165 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x1500 /* address 0x2A0000 */ 166 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0x200 /* 256KiB */ 167 #endif 168 169 /* General parts of the framework, required. */ 170 171 #ifdef CONFIG_NAND 172 #define CONFIG_SPL_NAND_BASE 173 #define CONFIG_SPL_NAND_DRIVERS 174 #define CONFIG_SPL_NAND_ECC 175 #define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE 176 #endif 177 #endif /* !CONFIG_NOR_BOOT */ 178 179 /* Generic Environment Variables */ 180 181 #ifdef CONFIG_CMD_NET 182 #define NETARGS \ 183 "static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \ 184 "::off\0" \ 185 "nfsopts=nolock\0" \ 186 "rootpath=/export/rootfs\0" \ 187 "netloadimage=tftp ${loadaddr} ${bootfile}\0" \ 188 "netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \ 189 "netargs=setenv bootargs console=${console} " \ 190 "${optargs} " \ 191 "root=/dev/nfs " \ 192 "nfsroot=${serverip}:${rootpath},${nfsopts} rw " \ 193 "ip=dhcp\0" \ 194 "netboot=echo Booting from network ...; " \ 195 "setenv autoload no; " \ 196 "dhcp; " \ 197 "run netloadimage; " \ 198 "run netloadfdt; " \ 199 "run netargs; " \ 200 "bootz ${loadaddr} - ${fdtaddr}\0" 201 #else 202 #define NETARGS "" 203 #endif 204 205 #endif /* __CONFIG_TI_ARMV7_COMMON_H__ */ 206