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 "addr_fit=0x90000000\0" \
56 "name_fit=fitImage\0" \
57 "update_to_fit=setenv loadaddr ${addr_fit}; setenv bootfile ${name_fit}\0" \
58 "get_overlaystring=" \
59 "for overlay in $overlay_files;" \
61 "setenv overlaystring ${overlaystring}'#'${overlay};" \
63 "run_fit=bootm ${loadaddr}#${fdtfile}${overlaystring}\0" \
64 "loadfit=run args_mmc; run run_fit;\0" \
67 * DDR information. If the CONFIG_NR_DRAM_BANKS is not defined,
68 * we say (for simplicity) that we have 1 bank, always, even when
69 * we have more. We always start at 0x80000000, and we place the
70 * initial stack pointer in our SRAM. Otherwise, we can define
71 * CONFIG_NR_DRAM_BANKS before including this file.
73 #define CONFIG_SYS_SDRAM_BASE 0x80000000
75 #ifndef CONFIG_SYS_INIT_SP_ADDR
76 #define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \
77 GENERATED_GBL_DATA_SIZE)
80 /* Timer information. */
81 #define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */
83 /* If DM_I2C, enable non-DM I2C support */
84 #if !defined(CONFIG_DM_I2C)
86 #define CONFIG_SYS_I2C
90 * The following are general good-enough settings for U-Boot. We set a
91 * large malloc pool as we generally have a lot of DDR, and we opt for
92 * function over binary size in the main portion of U-Boot as this is
93 * generally easily constrained later if needed. We enable the config
94 * options that give us information in the environment about what board
95 * we are on so we do not need to rely on the command prompt. We set a
96 * console baudrate of 115200 and use the default baud rate table.
98 #define CONFIG_SYS_MALLOC_LEN SZ_32M
99 #define CONFIG_ENV_OVERWRITE /* Overwrite ethaddr / serial# */
101 /* As stated above, the following choices are optional. */
103 /* We set the max number of command args high to avoid HUSH bugs. */
104 #define CONFIG_SYS_MAXARGS 64
106 /* Console I/O Buffer Size */
107 #define CONFIG_SYS_CBSIZE 1024
108 /* Boot Argument Buffer Size */
109 #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
112 * When we have SPI, NOR or NAND flash we expect to be making use of
113 * mtdparts, both for ease of use in U-Boot and for passing information
114 * on to the Linux kernel.
118 * Our platforms make use of SPL to initalize the hardware (primarily
119 * memory) enough for full U-Boot to be loaded. We make use of the general
120 * SPL framework found under common/spl/. Given our generally common memory
121 * map, we set a number of related defaults and sizes here.
123 #if !defined(CONFIG_NOR_BOOT) && \
124 !(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
127 * We also support Falcon Mode so that the Linux kernel can be booted
128 * directly from SPL. This is not currently available on HS devices.
132 * Place the image at the start of the ROM defined image space (per
133 * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
134 * downloaded image area minus 1KiB for scratch space. We initalize DRAM as
135 * soon as we can so that we can place stack, malloc and BSS there. We load
136 * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict
137 * with older SPLs). We have our BSS be placed 2MiB after this, to allow for
138 * the default Linux kernel address of 0x80008000 to work with most sized
139 * kernels, in the Falcon Mode case. We have the SPL malloc pool at the end
140 * of the BSS area. We suggest that the stack be placed at 32MiB after the
141 * start of DRAM to allow room for all of the above (handled in Kconfig).
143 #ifndef CONFIG_SPL_BSS_START_ADDR
144 #define CONFIG_SPL_BSS_START_ADDR 0x80a00000
145 #define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */
147 #ifndef CONFIG_SYS_SPL_MALLOC_START
148 #define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \
149 CONFIG_SPL_BSS_MAX_SIZE)
150 #define CONFIG_SYS_SPL_MALLOC_SIZE SZ_8M
152 #ifndef CONFIG_SPL_MAX_SIZE
153 #define CONFIG_SPL_MAX_SIZE (SRAM_SCRATCH_SPACE_ADDR - \
154 CONFIG_SPL_TEXT_BASE)
158 /* FAT sd card locations. */
159 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 1
160 #ifndef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
161 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot.img"
164 #ifdef CONFIG_SPL_OS_BOOT
166 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage"
167 #define CONFIG_SPL_FS_LOAD_ARGS_NAME "args"
169 /* RAW SD card / eMMC */
170 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1700 /* address 0x2E0000 */
171 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x1500 /* address 0x2A0000 */
172 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0x200 /* 256KiB */
175 /* General parts of the framework, required. */
178 #define CONFIG_SPL_NAND_BASE
179 #define CONFIG_SPL_NAND_DRIVERS
180 #define CONFIG_SPL_NAND_ECC
181 #define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
183 #endif /* !CONFIG_NOR_BOOT */
185 /* Generic Environment Variables */
187 #ifdef CONFIG_CMD_NET
189 "static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
192 "rootpath=/export/rootfs\0" \
193 "netloadimage=tftp ${loadaddr} ${bootfile}\0" \
194 "netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \
195 "netargs=setenv bootargs console=${console} " \
198 "nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
200 "netboot=echo Booting from network ...; " \
201 "setenv autoload no; " \
203 "run netloadimage; " \
206 "bootz ${loadaddr} - ${fdtaddr}\0"
211 #endif /* __CONFIG_TI_ARMV7_COMMON_H__ */