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_CMDLINE_TAG
28 #define CONFIG_SETUP_MEMORY_TAGS
29 #define CONFIG_INITRD_TAG
30 
31 /*
32  * Our DDR memory always starts at 0x80000000 and U-Boot shall have
33  * relocated itself to higher in memory by the time this value is used.
34  * However, set this to a 32MB offset to allow for easier Linux kernel
35  * booting as the default is often used as the kernel load address.
36  */
37 #define CONFIG_SYS_LOAD_ADDR		0x82000000
38 
39 /*
40  * We setup defaults based on constraints from the Linux kernel, which should
41  * also be safe elsewhere.  We have the default load at 32MB into DDR (for
42  * the kernel), FDT above 128MB (the maximum location for the end of the
43  * kernel), and the ramdisk 512KB above that (allowing for hopefully never
44  * seen large trees).  We say all of this must be within the first 256MB
45  * as that will normally be within the kernel lowmem and thus visible via
46  * bootm_size and we only run on platforms with 256MB or more of memory.
47  */
48 #define DEFAULT_LINUX_BOOT_ENV \
49 	"loadaddr=0x82000000\0" \
50 	"kernel_addr_r=0x82000000\0" \
51 	"fdtaddr=0x88000000\0" \
52 	"fdt_addr_r=0x88000000\0" \
53 	"rdaddr=0x88080000\0" \
54 	"ramdisk_addr_r=0x88080000\0" \
55 	"scriptaddr=0x80000000\0" \
56 	"pxefile_addr_r=0x80100000\0" \
57 	"bootm_size=0x10000000\0"
58 
59 #define DEFAULT_MMC_TI_ARGS \
60 	"mmcdev=0\0" \
61 	"mmcrootfstype=ext4 rootwait\0" \
62 	"finduuid=part uuid mmc 0:2 uuid\0" \
63 	"args_mmc=run finduuid;setenv bootargs console=${console} " \
64 		"${optargs} " \
65 		"root=PARTUUID=${uuid} rw " \
66 		"rootfstype=${mmcrootfstype}\0" \
67 	"loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr\0" \
68 	"bootscript=echo Running bootscript from mmc${mmcdev} ...; " \
69 		"source ${loadaddr}\0" \
70 	"bootenvfile=uEnv.txt\0" \
71 	"importbootenv=echo Importing environment from mmc${mmcdev} ...; " \
72 		"env import -t ${loadaddr} ${filesize}\0" \
73 	"loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenvfile}\0" \
74 	"envboot=mmc dev ${mmcdev}; " \
75 		"if mmc rescan; then " \
76 			"echo SD/MMC found on device ${mmcdev};" \
77 			"if run loadbootscript; then " \
78 				"run bootscript;" \
79 			"else " \
80 				"if run loadbootenv; then " \
81 					"echo Loaded env from ${bootenvfile};" \
82 					"run importbootenv;" \
83 				"fi;" \
84 				"if test -n $uenvcmd; then " \
85 					"echo Running uenvcmd ...;" \
86 					"run uenvcmd;" \
87 				"fi;" \
88 			"fi;" \
89 		"fi;\0" \
90 
91 /*
92  * DDR information.  If the CONFIG_NR_DRAM_BANKS is not defined,
93  * we say (for simplicity) that we have 1 bank, always, even when
94  * we have more.  We always start at 0x80000000, and we place the
95  * initial stack pointer in our SRAM. Otherwise, we can define
96  * CONFIG_NR_DRAM_BANKS before including this file.
97  */
98 #ifndef CONFIG_NR_DRAM_BANKS
99 #define CONFIG_NR_DRAM_BANKS		1
100 #endif
101 #define CONFIG_SYS_SDRAM_BASE		0x80000000
102 
103 #ifndef CONFIG_SYS_INIT_SP_ADDR
104 #define CONFIG_SYS_INIT_SP_ADDR         (NON_SECURE_SRAM_END - \
105 						GENERATED_GBL_DATA_SIZE)
106 #endif
107 
108 /* Timer information. */
109 #define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
110 
111 /* I2C IP block */
112 #define CONFIG_I2C
113 #define CONFIG_CMD_I2C
114 #define CONFIG_SYS_I2C
115 
116 /* MMC/SD IP block */
117 #define CONFIG_MMC
118 #define CONFIG_GENERIC_MMC
119 #define CONFIG_CMD_MMC
120 
121 /* McSPI IP block */
122 #define CONFIG_SPI
123 #define CONFIG_CMD_SPI
124 
125 /* GPIO block */
126 
127 /*
128  * The following are general good-enough settings for U-Boot.  We set a
129  * large malloc pool as we generally have a lot of DDR, and we opt for
130  * function over binary size in the main portion of U-Boot as this is
131  * generally easily constrained later if needed.  We enable the config
132  * options that give us information in the environment about what board
133  * we are on so we do not need to rely on the command prompt.  We set a
134  * console baudrate of 115200 and use the default baud rate table.
135  */
136 #ifdef CONFIG_DFU_MMC
137 #define CONFIG_SYS_MALLOC_LEN	((16 << 20) + CONFIG_SYS_DFU_DATA_BUF_SIZE)
138 #else
139 #define CONFIG_SYS_MALLOC_LEN	(16 << 20)
140 #endif
141 #define CONFIG_SYS_HUSH_PARSER
142 #define CONFIG_SYS_CONSOLE_INFO_QUIET
143 #define CONFIG_BAUDRATE			115200
144 #define CONFIG_ENV_VARS_UBOOT_CONFIG	/* Strongly encouraged */
145 #define CONFIG_ENV_OVERWRITE		/* Overwrite ethaddr / serial# */
146 
147 /* As stated above, the following choices are optional. */
148 #define CONFIG_SYS_LONGHELP
149 #define CONFIG_AUTO_COMPLETE
150 #define CONFIG_CMDLINE_EDITING
151 #define CONFIG_VERSION_VARIABLE
152 
153 /* We set the max number of command args high to avoid HUSH bugs. */
154 #define CONFIG_SYS_MAXARGS		64
155 
156 /* Console I/O Buffer Size */
157 #define CONFIG_SYS_CBSIZE		512
158 /* Print Buffer Size */
159 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE \
160 					+ sizeof(CONFIG_SYS_PROMPT) + 16)
161 /* Boot Argument Buffer Size */
162 #define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
163 
164 /*
165  * When we have SPI, NOR or NAND flash we expect to be making use of
166  * mtdparts, both for ease of use in U-Boot and for passing information
167  * on to the Linux kernel.
168  */
169 #if defined(CONFIG_SPI_BOOT) || defined(CONFIG_NOR) || defined(CONFIG_NAND) || defined(CONFIG_NAND_DAVINCI)
170 #define CONFIG_MTD_DEVICE		/* Required for mtdparts */
171 #define CONFIG_CMD_MTDPARTS
172 #endif
173 
174 #define CONFIG_CMD_ASKENV
175 #define CONFIG_CMD_BOOTZ
176 #define CONFIG_SUPPORT_RAW_INITRD
177 
178 /*
179  * Common filesystems support.  When we have removable storage we
180  * enabled a number of useful commands and support.
181  */
182 #if defined(CONFIG_MMC) || defined(CONFIG_USB_STORAGE)
183 #define CONFIG_DOS_PARTITION
184 #define CONFIG_CMD_FAT
185 #define CONFIG_FAT_WRITE
186 #define CONFIG_CMD_EXT2
187 #define CONFIG_CMD_EXT4
188 #define CONFIG_CMD_FS_GENERIC
189 #define CONFIG_PARTITION_UUIDS
190 #define CONFIG_CMD_PART
191 #endif
192 
193 /*
194  * Our platforms make use of SPL to initalize the hardware (primarily
195  * memory) enough for full U-Boot to be loaded.  We also support Falcon
196  * Mode so that the Linux kernel can be booted directly from SPL
197  * instead, if desired.  We make use of the general SPL framework found
198  * under common/spl/.  Given our generally common memory map, we set a
199  * number of related defaults and sizes here.
200  */
201 #if !defined(CONFIG_NOR_BOOT) && \
202 	!(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
203 #define CONFIG_SPL_FRAMEWORK
204 #define CONFIG_SPL_OS_BOOT
205 
206 /*
207  * Place the image at the start of the ROM defined image space (per
208  * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
209  * downloaded image area.  We initalize DRAM as soon as we can so that
210  * we can place stack, malloc and BSS there.  We load U-Boot itself into
211  * memory at 0x80800000 for legacy reasons (to not conflict with older
212  * SPLs).  We have our BSS be placed 2MiB after this, to allow for the
213  * default Linux kernel address of 0x80008000 to work with most sized
214  * kernels, in the Falcon Mode case.  We have the SPL malloc pool at the
215  * end of the BSS area.  We suggest that the stack be placed at 32MiB after
216  * the start of DRAM to allow room for all of the above (handled in Kconfig).
217  */
218 #ifndef CONFIG_SYS_TEXT_BASE
219 #define CONFIG_SYS_TEXT_BASE		0x80800000
220 #endif
221 #ifndef CONFIG_SPL_BSS_START_ADDR
222 #define CONFIG_SPL_BSS_START_ADDR	0x80a00000
223 #define CONFIG_SPL_BSS_MAX_SIZE		0x80000		/* 512 KB */
224 #endif
225 #ifndef CONFIG_SYS_SPL_MALLOC_START
226 #define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SPL_BSS_START_ADDR + \
227 					 CONFIG_SPL_BSS_MAX_SIZE)
228 #define CONFIG_SYS_SPL_MALLOC_SIZE	CONFIG_SYS_MALLOC_LEN
229 #endif
230 
231 /* RAW SD card / eMMC locations. */
232 #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR	0x300 /* address 0x60000 */
233 #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS	0x200 /* 256 KB */
234 
235 /* FAT sd card locations. */
236 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1
237 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME	"u-boot.img"
238 
239 #ifdef CONFIG_SPL_OS_BOOT
240 /* FAT */
241 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME		"uImage"
242 #define CONFIG_SPL_FS_LOAD_ARGS_NAME		"args"
243 
244 /* RAW SD card / eMMC */
245 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR	0x900	/* address 0x120000 */
246 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR	0x80	/* address 0x10000 */
247 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS	0x80	/* 64KiB */
248 
249 /* spl export command */
250 #define CONFIG_CMD_SPL
251 #endif
252 
253 #ifdef CONFIG_MMC
254 #define CONFIG_SPL_LIBDISK_SUPPORT
255 #define CONFIG_SPL_MMC_SUPPORT
256 #define CONFIG_SPL_FAT_SUPPORT
257 #define CONFIG_SPL_EXT_SUPPORT
258 #endif
259 
260 #define CONFIG_SYS_THUMB_BUILD
261 
262 /* General parts of the framework, required. */
263 #define CONFIG_SPL_I2C_SUPPORT
264 #define CONFIG_SPL_LIBCOMMON_SUPPORT
265 #define CONFIG_SPL_LIBGENERIC_SUPPORT
266 #define CONFIG_SPL_SERIAL_SUPPORT
267 #define CONFIG_SPL_POWER_SUPPORT
268 #define CONFIG_SPL_GPIO_SUPPORT
269 #define CONFIG_SPL_BOARD_INIT
270 
271 #ifdef CONFIG_NAND
272 #define CONFIG_SPL_NAND_SUPPORT
273 #define CONFIG_SPL_NAND_BASE
274 #define CONFIG_SPL_NAND_DRIVERS
275 #define CONFIG_SPL_NAND_ECC
276 #define CONFIG_SPL_MTD_SUPPORT
277 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
278 #endif
279 #endif /* !CONFIG_NOR_BOOT */
280 
281 /* Generic Environment Variables */
282 
283 #ifdef CONFIG_CMD_NET
284 #define NETARGS \
285 	"static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
286 		"::off\0" \
287 	"nfsopts=nolock\0" \
288 	"rootpath=/export/rootfs\0" \
289 	"netloadimage=tftp ${loadaddr} ${bootfile}\0" \
290 	"netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \
291 	"netargs=setenv bootargs console=${console} " \
292 		"${optargs} " \
293 		"root=/dev/nfs " \
294 		"nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
295 		"ip=dhcp\0" \
296 	"netboot=echo Booting from network ...; " \
297 		"setenv autoload no; " \
298 		"dhcp; " \
299 		"run netloadimage; " \
300 		"run netloadfdt; " \
301 		"run netargs; " \
302 		"bootz ${loadaddr} - ${fdtaddr}\0"
303 #else
304 #define NETARGS ""
305 #endif
306 
307 #include <config_distro_defaults.h>
308 #define CONFIG_CMD_EXT4_WRITE
309 
310 #endif	/* __CONFIG_TI_ARMV7_COMMON_H__ */
311