1 /* 2 * ti_armv7_common.h 3 * 4 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 * 8 * The various ARMv7 SoCs from TI all share a number of IP blocks when 9 * implementing a given feature. Rather than define these in every 10 * board or even SoC common file, we define a common file to be re-used 11 * in all cases. While technically true that some of these details are 12 * configurable at the board design, they are common throughout SoC 13 * reference platforms as well as custom designs and become de facto 14 * standards. 15 */ 16 17 #ifndef __CONFIG_TI_ARMV7_COMMON_H__ 18 #define __CONFIG_TI_ARMV7_COMMON_H__ 19 20 /* Support both device trees and ATAGs. */ 21 #define CONFIG_CMDLINE_TAG 22 #define CONFIG_SETUP_MEMORY_TAGS 23 #define CONFIG_INITRD_TAG 24 25 /* 26 * Our DDR memory always starts at 0x80000000 and U-Boot shall have 27 * relocated itself to higher in memory by the time this value is used. 28 * However, set this to a 32MB offset to allow for easier Linux kernel 29 * booting as the default is often used as the kernel load address. 30 */ 31 #define CONFIG_SYS_LOAD_ADDR 0x82000000 32 33 /* 34 * We setup defaults based on constraints from the Linux kernel, which should 35 * also be safe elsewhere. We have the default load at 32MB into DDR (for 36 * the kernel), FDT above 128MB (the maximum location for the end of the 37 * kernel), and the ramdisk 512KB above that (allowing for hopefully never 38 * seen large trees). We say all of this must be within the first 256MB 39 * as that will normally be within the kernel lowmem and thus visible via 40 * bootm_size and we only run on platforms with 256MB or more of memory. 41 */ 42 #define DEFAULT_LINUX_BOOT_ENV \ 43 "loadaddr=0x82000000\0" \ 44 "kernel_addr_r=0x82000000\0" \ 45 "fdtaddr=0x88000000\0" \ 46 "fdt_addr_r=0x88000000\0" \ 47 "rdaddr=0x88080000\0" \ 48 "ramdisk_addr_r=0x88080000\0" \ 49 "scriptaddr=0x80000000\0" \ 50 "pxefile_addr_r=0x80100000\0" \ 51 "bootm_size=0x10000000\0" \ 52 "boot_fdt=try\0" 53 54 #define DEFAULT_FIT_TI_ARGS \ 55 "boot_fit=0\0" \ 56 "fit_loadaddr=0x87000000\0" \ 57 "fit_bootfile=fitImage\0" \ 58 "update_to_fit=setenv loadaddr ${fit_loadaddr}; setenv bootfile ${fit_bootfile}\0" \ 59 "loadfit=run args_mmc; bootm ${loadaddr}#${fdtfile};\0" \ 60 61 /* 62 * DDR information. If the CONFIG_NR_DRAM_BANKS is not defined, 63 * we say (for simplicity) that we have 1 bank, always, even when 64 * we have more. We always start at 0x80000000, and we place the 65 * initial stack pointer in our SRAM. Otherwise, we can define 66 * CONFIG_NR_DRAM_BANKS before including this file. 67 */ 68 #ifndef CONFIG_NR_DRAM_BANKS 69 #define CONFIG_NR_DRAM_BANKS 1 70 #endif 71 #define CONFIG_SYS_SDRAM_BASE 0x80000000 72 73 #ifndef CONFIG_SYS_INIT_SP_ADDR 74 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \ 75 GENERATED_GBL_DATA_SIZE) 76 #endif 77 78 /* Timer information. */ 79 #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */ 80 81 /* 82 * Disable DM_* for SPL build and can be re-enabled after adding 83 * DM support in SPL 84 */ 85 #ifdef CONFIG_SPL_BUILD 86 #undef CONFIG_DM_I2C 87 #endif 88 89 /* I2C IP block */ 90 #define CONFIG_I2C 91 #ifndef CONFIG_DM_I2C 92 #define CONFIG_SYS_I2C 93 #else 94 /* 95 * Enable CONFIG_DM_I2C_COMPAT temporarily until all the i2c client 96 * devices are adopted to DM 97 */ 98 #define CONFIG_DM_I2C_COMPAT 99 #endif 100 101 /* McSPI IP block */ 102 #define CONFIG_SPI 103 104 /* GPIO block */ 105 106 /* 107 * The following are general good-enough settings for U-Boot. We set a 108 * large malloc pool as we generally have a lot of DDR, and we opt for 109 * function over binary size in the main portion of U-Boot as this is 110 * generally easily constrained later if needed. We enable the config 111 * options that give us information in the environment about what board 112 * we are on so we do not need to rely on the command prompt. We set a 113 * console baudrate of 115200 and use the default baud rate table. 114 */ 115 #define CONFIG_SYS_MALLOC_LEN SZ_32M 116 #define CONFIG_ENV_OVERWRITE /* Overwrite ethaddr / serial# */ 117 118 /* As stated above, the following choices are optional. */ 119 120 /* We set the max number of command args high to avoid HUSH bugs. */ 121 #define CONFIG_SYS_MAXARGS 64 122 123 /* Console I/O Buffer Size */ 124 #define CONFIG_SYS_CBSIZE 1024 125 /* Boot Argument Buffer Size */ 126 #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE 127 128 /* 129 * When we have SPI, NOR or NAND flash we expect to be making use of 130 * mtdparts, both for ease of use in U-Boot and for passing information 131 * on to the Linux kernel. 132 */ 133 #if defined(CONFIG_SPI_BOOT) || defined(CONFIG_NOR) || defined(CONFIG_NAND) || defined(CONFIG_NAND_DAVINCI) 134 #define CONFIG_MTD_DEVICE /* Required for mtdparts */ 135 #endif 136 137 /* 138 * Our platforms make use of SPL to initalize the hardware (primarily 139 * memory) enough for full U-Boot to be loaded. We make use of the general 140 * SPL framework found under common/spl/. Given our generally common memory 141 * map, we set a number of related defaults and sizes here. 142 */ 143 #if !defined(CONFIG_NOR_BOOT) && \ 144 !(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX)) 145 146 /* 147 * We also support Falcon Mode so that the Linux kernel can be booted 148 * directly from SPL. This is not currently available on HS devices. 149 */ 150 151 /* 152 * Place the image at the start of the ROM defined image space (per 153 * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined 154 * downloaded image area minus 1KiB for scratch space. We initalize DRAM as 155 * soon as we can so that we can place stack, malloc and BSS there. We load 156 * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict 157 * with older SPLs). We have our BSS be placed 2MiB after this, to allow for 158 * the default Linux kernel address of 0x80008000 to work with most sized 159 * kernels, in the Falcon Mode case. We have the SPL malloc pool at the end 160 * of the BSS area. We suggest that the stack be placed at 32MiB after the 161 * start of DRAM to allow room for all of the above (handled in Kconfig). 162 */ 163 #ifndef CONFIG_SPL_BSS_START_ADDR 164 #define CONFIG_SPL_BSS_START_ADDR 0x80a00000 165 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */ 166 #endif 167 #ifndef CONFIG_SYS_SPL_MALLOC_START 168 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \ 169 CONFIG_SPL_BSS_MAX_SIZE) 170 #define CONFIG_SYS_SPL_MALLOC_SIZE SZ_8M 171 #endif 172 #ifndef CONFIG_SPL_MAX_SIZE 173 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \ 174 CONFIG_SPL_TEXT_BASE) 175 #endif 176 177 178 /* FAT sd card locations. */ 179 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 1 180 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img" 181 182 #ifdef CONFIG_SPL_OS_BOOT 183 /* FAT */ 184 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage" 185 #define CONFIG_SPL_FS_LOAD_ARGS_NAME "args" 186 187 /* RAW SD card / eMMC */ 188 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1700 /* address 0x2E0000 */ 189 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x1500 /* address 0x2A0000 */ 190 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0x200 /* 256KiB */ 191 #endif 192 193 /* General parts of the framework, required. */ 194 195 #ifdef CONFIG_NAND 196 #define CONFIG_SPL_NAND_BASE 197 #define CONFIG_SPL_NAND_DRIVERS 198 #define CONFIG_SPL_NAND_ECC 199 #define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE 200 #endif 201 #endif /* !CONFIG_NOR_BOOT */ 202 203 /* Generic Environment Variables */ 204 205 #ifdef CONFIG_CMD_NET 206 #define NETARGS \ 207 "static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \ 208 "::off\0" \ 209 "nfsopts=nolock\0" \ 210 "rootpath=/export/rootfs\0" \ 211 "netloadimage=tftp ${loadaddr} ${bootfile}\0" \ 212 "netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \ 213 "netargs=setenv bootargs console=${console} " \ 214 "${optargs} " \ 215 "root=/dev/nfs " \ 216 "nfsroot=${serverip}:${rootpath},${nfsopts} rw " \ 217 "ip=dhcp\0" \ 218 "netboot=echo Booting from network ...; " \ 219 "setenv autoload no; " \ 220 "dhcp; " \ 221 "run netloadimage; " \ 222 "run netloadfdt; " \ 223 "run netargs; " \ 224 "bootz ${loadaddr} - ${fdtaddr}\0" 225 #else 226 #define NETARGS "" 227 #endif 228 229 #endif /* __CONFIG_TI_ARMV7_COMMON_H__ */ 230