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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__ */