1 /* SPDX-License-Identifier: GPL-2.0+ */
5 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
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
16 #ifndef __CONFIG_TI_ARMV7_COMMON_H__
17 #define __CONFIG_TI_ARMV7_COMMON_H__
19 /* Support both device trees and ATAGs. */
20 #define CONFIG_CMDLINE_TAG
21 #define CONFIG_SETUP_MEMORY_TAGS
22 #define CONFIG_INITRD_TAG
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.
30 #define CONFIG_SYS_LOAD_ADDR 0x82000000
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.
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" \
53 #define DEFAULT_FIT_TI_ARGS \
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" \
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.
67 #ifndef CONFIG_NR_DRAM_BANKS
68 #define CONFIG_NR_DRAM_BANKS 1
70 #define CONFIG_SYS_SDRAM_BASE 0x80000000
72 #ifndef CONFIG_SYS_INIT_SP_ADDR
73 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \
74 GENERATED_GBL_DATA_SIZE)
77 /* Timer information. */
78 #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */
81 * Disable DM_* for SPL build and can be re-enabled after adding
84 #ifdef CONFIG_SPL_BUILD
91 #define CONFIG_SYS_I2C
94 * Enable CONFIG_DM_I2C_COMPAT temporarily until all the i2c client
95 * devices are adopted to DM
97 #define CONFIG_DM_I2C_COMPAT
101 * The following are general good-enough settings for U-Boot. We set a
102 * large malloc pool as we generally have a lot of DDR, and we opt for
103 * function over binary size in the main portion of U-Boot as this is
104 * generally easily constrained later if needed. We enable the config
105 * options that give us information in the environment about what board
106 * we are on so we do not need to rely on the command prompt. We set a
107 * console baudrate of 115200 and use the default baud rate table.
109 #define CONFIG_SYS_MALLOC_LEN SZ_32M
110 #define CONFIG_ENV_OVERWRITE /* Overwrite ethaddr / serial# */
112 /* As stated above, the following choices are optional. */
114 /* We set the max number of command args high to avoid HUSH bugs. */
115 #define CONFIG_SYS_MAXARGS 64
117 /* Console I/O Buffer Size */
118 #define CONFIG_SYS_CBSIZE 1024
119 /* Boot Argument Buffer Size */
120 #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
123 * When we have SPI, NOR or NAND flash we expect to be making use of
124 * mtdparts, both for ease of use in U-Boot and for passing information
125 * on to the Linux kernel.
127 #if defined(CONFIG_SPI_BOOT) || defined(CONFIG_NOR) || defined(CONFIG_NAND) || defined(CONFIG_NAND_DAVINCI)
128 #define CONFIG_MTD_DEVICE /* Required for mtdparts */
132 * Our platforms make use of SPL to initalize the hardware (primarily
133 * memory) enough for full U-Boot to be loaded. We make use of the general
134 * SPL framework found under common/spl/. Given our generally common memory
135 * map, we set a number of related defaults and sizes here.
137 #if !defined(CONFIG_NOR_BOOT) && \
138 !(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
141 * We also support Falcon Mode so that the Linux kernel can be booted
142 * directly from SPL. This is not currently available on HS devices.
146 * Place the image at the start of the ROM defined image space (per
147 * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
148 * downloaded image area minus 1KiB for scratch space. We initalize DRAM as
149 * soon as we can so that we can place stack, malloc and BSS there. We load
150 * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict
151 * with older SPLs). We have our BSS be placed 2MiB after this, to allow for
152 * the default Linux kernel address of 0x80008000 to work with most sized
153 * kernels, in the Falcon Mode case. We have the SPL malloc pool at the end
154 * of the BSS area. We suggest that the stack be placed at 32MiB after the
155 * start of DRAM to allow room for all of the above (handled in Kconfig).
157 #ifndef CONFIG_SPL_BSS_START_ADDR
158 #define CONFIG_SPL_BSS_START_ADDR 0x80a00000
159 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */
161 #ifndef CONFIG_SYS_SPL_MALLOC_START
162 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \
163 CONFIG_SPL_BSS_MAX_SIZE)
164 #define CONFIG_SYS_SPL_MALLOC_SIZE SZ_8M
166 #ifndef CONFIG_SPL_MAX_SIZE
167 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \
168 CONFIG_SPL_TEXT_BASE)
172 /* FAT sd card locations. */
173 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 1
174 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img"
176 #ifdef CONFIG_SPL_OS_BOOT
178 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage"
179 #define CONFIG_SPL_FS_LOAD_ARGS_NAME "args"
181 /* RAW SD card / eMMC */
182 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1700 /* address 0x2E0000 */
183 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x1500 /* address 0x2A0000 */
184 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0x200 /* 256KiB */
187 /* General parts of the framework, required. */
190 #define CONFIG_SPL_NAND_BASE
191 #define CONFIG_SPL_NAND_DRIVERS
192 #define CONFIG_SPL_NAND_ECC
193 #define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
195 #endif /* !CONFIG_NOR_BOOT */
197 /* Generic Environment Variables */
199 #ifdef CONFIG_CMD_NET
201 "static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
204 "rootpath=/export/rootfs\0" \
205 "netloadimage=tftp ${loadaddr} ${bootfile}\0" \
206 "netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \
207 "netargs=setenv bootargs console=${console} " \
210 "nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
212 "netboot=echo Booting from network ...; " \
213 "setenv autoload no; " \
215 "run netloadimage; " \
218 "bootz ${loadaddr} - ${fdtaddr}\0"
223 #endif /* __CONFIG_TI_ARMV7_COMMON_H__ */