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TI:armv7: Re-order slightly the generic CONFIG options, expand related comments
[people/ms/u-boot.git] / include / configs / ti_armv7_common.h
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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/* Common define for many platforms. */
21#define CONFIG_OMAP
22#define CONFIG_OMAP_COMMON
23
24/*
25 * We typically do not contain NOR flash. In the cases where we do, we
26 * undefine this later.
27 */
28#define CONFIG_SYS_NO_FLASH
29
30/* Support both device trees and ATAGs. */
31#define CONFIG_OF_LIBFDT
32#define CONFIG_CMDLINE_TAG
33#define CONFIG_SETUP_MEMORY_TAGS
34#define CONFIG_INITRD_TAG
35
36/*
37 * Our DDR memory always starts at 0x80000000 and U-Boot shall have
38 * relocated itself to higher in memory by the time this value is used.
39 */
40#define CONFIG_SYS_LOAD_ADDR 0x80000000
41
42/*
43 * Default to a quick boot delay.
44 */
45#define CONFIG_BOOTDELAY 1
46
47/*
48 * DDR information. We say (for simplicity) that we have 1 bank,
49 * always, even when we have more. We always start at 0x80000000,
50 * and we place the initial stack pointer in our SRAM.
51 */
52#define CONFIG_NR_DRAM_BANKS 1
53#define CONFIG_SYS_SDRAM_BASE 0x80000000
54#define CONFIG_SYS_INIT_SP_ADDR (NON_SECURE_SRAM_END - \
55 GENERATED_GBL_DATA_SIZE)
56
57/* Timer information. */
58#define CONFIG_SYS_PTV 2 /* Divisor: 2^(PTV+1) => 8 */
59#define CONFIG_SYS_HZ 1000 /* 1ms clock */
60
61/* I2C IP block */
62#define CONFIG_I2C
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63#define CONFIG_HARD_I2C
64#define CONFIG_SYS_I2C_SPEED 100000
65#define CONFIG_SYS_I2C_SLAVE 1
66#define CONFIG_I2C_MULTI_BUS
67#define CONFIG_DRIVER_OMAP24XX_I2C
1dd44e5a 68#define CONFIG_CMD_I2C
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69
70/* MMC/SD IP block */
71#define CONFIG_MMC
72#define CONFIG_GENERIC_MMC
73#define CONFIG_OMAP_HSMMC
74#define CONFIG_CMD_MMC
75
76/* McSPI IP block */
77#define CONFIG_SPI
78#define CONFIG_OMAP3_SPI
0fedc4a5 79#define CONFIG_CMD_SPI
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80
81/* GPIO block */
82#define CONFIG_OMAP_GPIO
a1665ed1 83#define CONFIG_CMD_GPIO
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84
85/*
86 * GPMC NAND block. We support 1 device and the physical address to
87 * access CS0 at is 0x8000000.
88 */
89#ifdef CONFIG_NAND
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90#define CONFIG_NAND_OMAP_GPMC
91#define CONFIG_SYS_NAND_BASE 0x8000000
92#define CONFIG_SYS_MAX_NAND_DEVICE 1
1dd44e5a 93#define CONFIG_CMD_NAND
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94#endif
95
96/*
97 * The following are general good-enough settings for U-Boot. We set a
98 * large malloc pool as we generally have a lot of DDR, and we opt for
99 * function over binary size in the main portion of U-Boot as this is
100 * generally easily constrained later if needed. We enable the config
101 * options that give us information in the environment about what board
102 * we are on so we do not need to rely on the command prompt. We set a
103 * console baudrate of 115200 and use the default baud rate table.
104 */
105#define CONFIG_SYS_MALLOC_LEN (1024 << 10)
87694558 106#define CONFIG_SYS_HUSH_PARSER
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107#define CONFIG_SYS_PROMPT "U-Boot# "
108#define CONFIG_SYS_CONSOLE_INFO_QUIET
109#define CONFIG_BAUDRATE 115200
110#define CONFIG_ENV_VARS_UBOOT_CONFIG /* Strongly encouraged */
111#define CONFIG_ENV_OVERWRITE /* Overwrite ethaddr / serial# */
112
113/* As stated above, the following choices are optional. */
114#define CONFIG_SYS_LONGHELP
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115#define CONFIG_AUTO_COMPLETE
116#define CONFIG_CMDLINE_EDITING
87694558 117#define CONFIG_VERSION_VARIABLE
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118
119/* We set the max number of command args high to avoid HUSH bugs. */
120#define CONFIG_SYS_MAXARGS 64
121
122/* Console I/O Buffer Size */
123#define CONFIG_SYS_CBSIZE 512
124/* Print Buffer Size */
125#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE \
126 + sizeof(CONFIG_SYS_PROMPT) + 16)
127/* Boot Argument Buffer Size */
128#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
129
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130/*
131 * When we have SPI, NOR or NAND flash we expect to be making use of
132 * mtdparts, both for ease of use in U-Boot and for passing information
133 * on to the Linux kernel.
134 */
135#if defined(CONFIG_SPI_BOOT) || defined(CONFIG_NOR) || defined(CONFIG_NAND)
136#define CONFIG_MTD_DEVICE /* Required for mtdparts */
137#define CONFIG_CMD_MTDPARTS
138#endif
139
140/*
141 * For commands to use, we take the default list and add a few other
142 * useful commands. Note that we must have set CONFIG_SYS_NO_FLASH
143 * prior to this include, in order to skip a few commands. When we do
144 * have flash, if we expect these commands they must be enabled in that
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145 * config. If desired, a specific list of desired commands can be used
146 * instead.
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147 */
148#include <config_cmd_default.h>
149#define CONFIG_CMD_ASKENV
150#define CONFIG_CMD_ECHO
151#define CONFIG_CMD_BOOTZ
152
153/*
154 * Common filesystems support. When we have removable storage we
155 * enabled a number of useful commands and support.
156 */
157#if defined(CONFIG_MMC) || defined(CONFIG_USB_STORAGE)
158#define CONFIG_DOS_PARTITION
159#define CONFIG_CMD_FAT
160#define CONFIG_FAT_WRITE
161#define CONFIG_CMD_EXT2
162#define CONFIG_CMD_EXT4
163#define CONFIG_CMD_FS_GENERIC
164#endif
165
166/*
167 * Our platforms make use of SPL to initalize the hardware (primarily
168 * memory) enough for full U-Boot to be loaded. We also support Falcon
169 * Mode so that the Linux kernel can be booted directly from SPL
170 * instead, if desired. We make use of the general SPL framework found
171 * under common/spl/. Given our generally common memory map, we set a
172 * number of related defaults and sizes here.
173 */
174#ifndef CONFIG_NOR_BOOT
175#define CONFIG_SPL
176#define CONFIG_SPL_FRAMEWORK
177#define CONFIG_SPL_OS_BOOT
178
179/*
180 * Place the image at the start of the ROM defined image space.
181 * We limit our size to the ROM-defined downloaded image area, and use the
182 * rest of the space for stack. We load U-Boot itself into memory at
183 * 0x80800000 for legacy reasons (to not conflict with older SPLs). We
184 * have our BSS be placed 1MiB after this, to allow for the default
185 * Linux kernel address of 0x80008000 to work, in the Falcon Mode case.
186 * We have the SPL malloc pool at the end of the BSS area.
187 */
188#define CONFIG_SPL_STACK CONFIG_SYS_INIT_SP_ADDR
189#define CONFIG_SYS_TEXT_BASE 0x80800000
190#define CONFIG_SPL_BSS_START_ADDR 0x80a00000
191#define CONFIG_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */
192#define CONFIG_SYS_SPL_MALLOC_START (CONFIG_SPL_BSS_START_ADDR + \
193 CONFIG_SPL_BSS_MAX_SIZE)
194#define CONFIG_SYS_SPL_MALLOC_SIZE CONFIG_SYS_MALLOC_LEN
195
196/* RAW SD card / eMMC locations. */
197#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x300 /* address 0x60000 */
198#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 0x200 /* 256 KB */
199
200/* FAT sd card locations. */
201#define CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 1
202#define CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME "u-boot.img"
203
204#ifdef CONFIG_SPL_OS_BOOT
205#define CONFIG_SYS_SPL_ARGS_ADDR (CONFIG_SYS_SDRAM_BASE + 0x100)
206
207/* FAT */
208#define CONFIG_SPL_FAT_LOAD_KERNEL_NAME "uImage"
209#define CONFIG_SPL_FAT_LOAD_ARGS_NAME "args"
210
211/* RAW SD card / eMMC */
212#define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x900 /* address 0x120000 */
213#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x80 /* address 0x10000 */
214#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 0x80 /* 64KiB */
215
216/* NAND */
217#ifdef CONFIG_NAND
218#define CONFIG_CMD_SPL_NAND_OFS 0x240000 /* end of u-boot */
219#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS 0x280000
220#define CONFIG_CMD_SPL_WRITE_SIZE 0x2000
221#endif
222
223/* spl export command */
224#define CONFIG_CMD_SPL
225#endif
226
227#ifdef CONFIG_MMC
a7142dd0 228#define CONFIG_SPL_LIBDISK_SUPPORT
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229#define CONFIG_SPL_MMC_SUPPORT
230#define CONFIG_SPL_FAT_SUPPORT
231#endif
232
a7142dd0 233/* General parts of the framework, required. */
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234#define CONFIG_SPL_I2C_SUPPORT
235#define CONFIG_SPL_LIBCOMMON_SUPPORT
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236#define CONFIG_SPL_LIBGENERIC_SUPPORT
237#define CONFIG_SPL_SERIAL_SUPPORT
238#define CONFIG_SPL_GPIO_SUPPORT
239#define CONFIG_SPL_BOARD_INIT
240
241#ifdef CONFIG_NAND
242#define CONFIG_SPL_NAND_AM33XX_BCH /* OMAP4 and later ELM support */
243#define CONFIG_SPL_NAND_SUPPORT
244#define CONFIG_SPL_NAND_BASE
245#define CONFIG_SPL_NAND_DRIVERS
246#define CONFIG_SPL_NAND_ECC
247#define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
248#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x80000
249#endif
250#endif /* !CONFIG_NOR_BOOT */
251
252#endif /* __CONFIG_TI_ARMV7_COMMON_H__ */