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