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 /*
21  * We typically do not contain NOR flash.  In the cases where we do, we
22  * undefine this later.
23  */
24 #define CONFIG_SYS_NO_FLASH
25 
26 /* Support both device trees and ATAGs. */
27 #define CONFIG_OF_LIBFDT
28 #define CONFIG_CMDLINE_TAG
29 #define CONFIG_SETUP_MEMORY_TAGS
30 #define CONFIG_INITRD_TAG
31 
32 /*
33  * Our DDR memory always starts at 0x80000000 and U-Boot shall have
34  * relocated itself to higher in memory by the time this value is used.
35  * However, set this to a 32MB offset to allow for easier Linux kernel
36  * booting as the default is often used as the kernel load address.
37  */
38 #define CONFIG_SYS_LOAD_ADDR		0x82000000
39 
40 /*
41  * We setup defaults based on constraints from the Linux kernel, which should
42  * also be safe elsewhere.  We have the default load at 32MB into DDR (for
43  * the kernel), FDT above 128MB (the maximum location for the end of the
44  * kernel), and the ramdisk 512KB above that (allowing for hopefully never
45  * seen large trees).  We say all of this must be within the first 256MB
46  * as that will normally be within the kernel lowmem and thus visible via
47  * bootm_size and we only run on platforms with 256MB or more of memory.
48  */
49 #define DEFAULT_LINUX_BOOT_ENV \
50 	"loadaddr=0x82000000\0" \
51 	"kernel_addr_r=0x82000000\0" \
52 	"fdtaddr=0x88000000\0" \
53 	"fdt_addr_r=0x88000000\0" \
54 	"rdaddr=0x88080000\0" \
55 	"ramdisk_addr_r=0x88080000\0" \
56 	"scriptaddr=0x80000000\0" \
57 	"pxefile_addr_r=0x80100000\0" \
58 	"bootm_size=0x10000000\0"
59 
60 #define DEFAULT_MMC_TI_ARGS \
61 	"mmcdev=0\0" \
62 	"mmcrootfstype=ext4 rootwait\0" \
63 	"finduuid=part uuid mmc 0:2 uuid\0" \
64 	"args_mmc=run finduuid;setenv bootargs console=${console} " \
65 		"${optargs} " \
66 		"root=PARTUUID=${uuid} rw " \
67 		"rootfstype=${mmcrootfstype}\0"
68 
69 /*
70  * DDR information.  If the CONFIG_NR_DRAM_BANKS is not defined,
71  * we say (for simplicity) that we have 1 bank, always, even when
72  * we have more.  We always start at 0x80000000, and we place the
73  * initial stack pointer in our SRAM. Otherwise, we can define
74  * CONFIG_NR_DRAM_BANKS before including this file.
75  */
76 #ifndef CONFIG_NR_DRAM_BANKS
77 #define CONFIG_NR_DRAM_BANKS		1
78 #endif
79 #define CONFIG_SYS_SDRAM_BASE		0x80000000
80 
81 #ifndef CONFIG_SYS_INIT_SP_ADDR
82 #define CONFIG_SYS_INIT_SP_ADDR         (NON_SECURE_SRAM_END - \
83 						GENERATED_GBL_DATA_SIZE)
84 #endif
85 
86 /* Timer information. */
87 #define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
88 
89 /* I2C IP block */
90 #define CONFIG_I2C
91 #define CONFIG_CMD_I2C
92 #define CONFIG_SYS_I2C
93 
94 /* MMC/SD IP block */
95 #define CONFIG_MMC
96 #define CONFIG_GENERIC_MMC
97 #define CONFIG_CMD_MMC
98 
99 /* McSPI IP block */
100 #define CONFIG_SPI
101 #define CONFIG_CMD_SPI
102 
103 /* GPIO block */
104 
105 /*
106  * The following are general good-enough settings for U-Boot.  We set a
107  * large malloc pool as we generally have a lot of DDR, and we opt for
108  * function over binary size in the main portion of U-Boot as this is
109  * generally easily constrained later if needed.  We enable the config
110  * options that give us information in the environment about what board
111  * we are on so we do not need to rely on the command prompt.  We set a
112  * console baudrate of 115200 and use the default baud rate table.
113  */
114 #ifdef CONFIG_DFU_MMC
115 #define CONFIG_SYS_MALLOC_LEN	((16 << 20) + CONFIG_SYS_DFU_DATA_BUF_SIZE)
116 #else
117 #define CONFIG_SYS_MALLOC_LEN	(16 << 20)
118 #endif
119 #define CONFIG_SYS_HUSH_PARSER
120 #define CONFIG_SYS_CONSOLE_INFO_QUIET
121 #define CONFIG_BAUDRATE			115200
122 #define CONFIG_ENV_VARS_UBOOT_CONFIG	/* Strongly encouraged */
123 #define CONFIG_ENV_OVERWRITE		/* Overwrite ethaddr / serial# */
124 
125 /* As stated above, the following choices are optional. */
126 #define CONFIG_SYS_LONGHELP
127 #define CONFIG_AUTO_COMPLETE
128 #define CONFIG_CMDLINE_EDITING
129 #define CONFIG_VERSION_VARIABLE
130 
131 /* We set the max number of command args high to avoid HUSH bugs. */
132 #define CONFIG_SYS_MAXARGS		64
133 
134 /* Console I/O Buffer Size */
135 #define CONFIG_SYS_CBSIZE		512
136 /* Print Buffer Size */
137 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE \
138 					+ sizeof(CONFIG_SYS_PROMPT) + 16)
139 /* Boot Argument Buffer Size */
140 #define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
141 
142 /*
143  * When we have SPI, NOR or NAND flash we expect to be making use of
144  * mtdparts, both for ease of use in U-Boot and for passing information
145  * on to the Linux kernel.
146  */
147 #if defined(CONFIG_SPI_BOOT) || defined(CONFIG_NOR) || defined(CONFIG_NAND) || defined(CONFIG_NAND_DAVINCI)
148 #define CONFIG_MTD_DEVICE		/* Required for mtdparts */
149 #define CONFIG_CMD_MTDPARTS
150 #endif
151 
152 #define CONFIG_CMD_ASKENV
153 #define CONFIG_CMD_BOOTZ
154 #define CONFIG_SUPPORT_RAW_INITRD
155 
156 /*
157  * Common filesystems support.  When we have removable storage we
158  * enabled a number of useful commands and support.
159  */
160 #if defined(CONFIG_MMC) || defined(CONFIG_USB_STORAGE)
161 #define CONFIG_DOS_PARTITION
162 #define CONFIG_CMD_FAT
163 #define CONFIG_FAT_WRITE
164 #define CONFIG_CMD_EXT2
165 #define CONFIG_CMD_EXT4
166 #define CONFIG_CMD_FS_GENERIC
167 #define CONFIG_PARTITION_UUIDS
168 #define CONFIG_CMD_PART
169 #endif
170 
171 /*
172  * Our platforms make use of SPL to initalize the hardware (primarily
173  * memory) enough for full U-Boot to be loaded.  We also support Falcon
174  * Mode so that the Linux kernel can be booted directly from SPL
175  * instead, if desired.  We make use of the general SPL framework found
176  * under common/spl/.  Given our generally common memory map, we set a
177  * number of related defaults and sizes here.
178  */
179 #if !defined(CONFIG_NOR_BOOT) && \
180 	!(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
181 #define CONFIG_SPL_FRAMEWORK
182 #define CONFIG_SPL_OS_BOOT
183 
184 /*
185  * Place the image at the start of the ROM defined image space (per
186  * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
187  * downloaded image area.  We initalize DRAM as soon as we can so that
188  * we can place stack, malloc and BSS there.  We load U-Boot itself into
189  * memory at 0x80800000 for legacy reasons (to not conflict with older
190  * SPLs).  We have our BSS be placed 2MiB after this, to allow for the
191  * default Linux kernel address of 0x80008000 to work with most sized
192  * kernels, in the Falcon Mode case.  We have the SPL malloc pool at the
193  * end of the BSS area.  We suggest that the stack be placed at 32MiB after
194  * the start of DRAM to allow room for all of the above (handled in Kconfig).
195  */
196 #ifndef CONFIG_SYS_TEXT_BASE
197 #define CONFIG_SYS_TEXT_BASE		0x80800000
198 #endif
199 #ifndef CONFIG_SPL_BSS_START_ADDR
200 #define CONFIG_SPL_BSS_START_ADDR	0x80a00000
201 #define CONFIG_SPL_BSS_MAX_SIZE		0x80000		/* 512 KB */
202 #endif
203 #ifndef CONFIG_SYS_SPL_MALLOC_START
204 #define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SPL_BSS_START_ADDR + \
205 					 CONFIG_SPL_BSS_MAX_SIZE)
206 #define CONFIG_SYS_SPL_MALLOC_SIZE	CONFIG_SYS_MALLOC_LEN
207 #endif
208 
209 /* RAW SD card / eMMC locations. */
210 #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR	0x300 /* address 0x60000 */
211 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x200 /* 256 KB */
212 
213 /* FAT sd card locations. */
214 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1
215 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME	"u-boot.img"
216 
217 #ifdef CONFIG_SPL_OS_BOOT
218 /* FAT */
219 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME		"uImage"
220 #define CONFIG_SPL_FS_LOAD_ARGS_NAME		"args"
221 
222 /* RAW SD card / eMMC */
223 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR	0x900	/* address 0x120000 */
224 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR	0x80	/* address 0x10000 */
225 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS	0x80	/* 64KiB */
226 
227 /* spl export command */
228 #define CONFIG_CMD_SPL
229 #endif
230 
231 #ifdef CONFIG_MMC
232 #define CONFIG_SPL_LIBDISK_SUPPORT
233 #define CONFIG_SPL_MMC_SUPPORT
234 #define CONFIG_SPL_FAT_SUPPORT
235 #define CONFIG_SPL_EXT_SUPPORT
236 #endif
237 
238 #define CONFIG_SYS_THUMB_BUILD
239 
240 /* General parts of the framework, required. */
241 #define CONFIG_SPL_I2C_SUPPORT
242 #define CONFIG_SPL_LIBCOMMON_SUPPORT
243 #define CONFIG_SPL_LIBGENERIC_SUPPORT
244 #define CONFIG_SPL_SERIAL_SUPPORT
245 #define CONFIG_SPL_POWER_SUPPORT
246 #define CONFIG_SPL_GPIO_SUPPORT
247 #define CONFIG_SPL_BOARD_INIT
248 
249 #ifdef CONFIG_NAND
250 #define CONFIG_SPL_NAND_SUPPORT
251 #define CONFIG_SPL_NAND_BASE
252 #define CONFIG_SPL_NAND_DRIVERS
253 #define CONFIG_SPL_NAND_ECC
254 #define CONFIG_SPL_MTD_SUPPORT
255 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
256 #endif
257 #endif /* !CONFIG_NOR_BOOT */
258 
259 /* Generic Environment Variables */
260 
261 #ifdef CONFIG_CMD_NET
262 #define NETARGS \
263 	"static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
264 		"::off\0" \
265 	"nfsopts=nolock\0" \
266 	"rootpath=/export/rootfs\0" \
267 	"netloadimage=tftp ${loadaddr} ${bootfile}\0" \
268 	"netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \
269 	"netargs=setenv bootargs console=${console} " \
270 		"${optargs} " \
271 		"root=/dev/nfs " \
272 		"nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
273 		"ip=dhcp\0" \
274 	"netboot=echo Booting from network ...; " \
275 		"setenv autoload no; " \
276 		"dhcp; " \
277 		"run netloadimage; " \
278 		"run netloadfdt; " \
279 		"run netargs; " \
280 		"bootz ${loadaddr} - ${fdtaddr}\0"
281 #else
282 #define NETARGS ""
283 #endif
284 
285 #include <config_distro_defaults.h>
286 #define CONFIG_CMD_EXT4_WRITE
287 
288 #endif	/* __CONFIG_TI_ARMV7_COMMON_H__ */
289