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 ${bootpart} uuid\0" \
63 	"args_mmc=run finduuid;setenv bootargs console=${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 /*
112  * Disable DM_* for SPL build and can be re-enabled after adding
113  * DM support in SPL
114  */
115 #ifdef CONFIG_SPL_BUILD
116 #undef CONFIG_DM_I2C
117 #endif
118 
119 /* I2C IP block */
120 #define CONFIG_I2C
121 #ifndef CONFIG_DM_I2C
122 #define CONFIG_SYS_I2C
123 #else
124 /*
125  * Enable CONFIG_DM_I2C_COMPAT temporarily until all the i2c client
126  * devices are adopted to DM
127  */
128 #define CONFIG_DM_I2C_COMPAT
129 #endif
130 
131 /* MMC/SD IP block */
132 #define CONFIG_MMC
133 #define CONFIG_GENERIC_MMC
134 
135 /* McSPI IP block */
136 #define CONFIG_SPI
137 
138 /* GPIO block */
139 
140 /*
141  * The following are general good-enough settings for U-Boot.  We set a
142  * large malloc pool as we generally have a lot of DDR, and we opt for
143  * function over binary size in the main portion of U-Boot as this is
144  * generally easily constrained later if needed.  We enable the config
145  * options that give us information in the environment about what board
146  * we are on so we do not need to rely on the command prompt.  We set a
147  * console baudrate of 115200 and use the default baud rate table.
148  */
149 #define CONFIG_SYS_MALLOC_LEN		SZ_32M
150 #define CONFIG_BAUDRATE			115200
151 #define CONFIG_ENV_VARS_UBOOT_CONFIG	/* Strongly encouraged */
152 #define CONFIG_ENV_OVERWRITE		/* Overwrite ethaddr / serial# */
153 
154 /* As stated above, the following choices are optional. */
155 #define CONFIG_SYS_LONGHELP
156 #define CONFIG_AUTO_COMPLETE
157 #define CONFIG_CMDLINE_EDITING
158 
159 /* We set the max number of command args high to avoid HUSH bugs. */
160 #define CONFIG_SYS_MAXARGS		64
161 
162 /* Console I/O Buffer Size */
163 #define CONFIG_SYS_CBSIZE		512
164 /* Print Buffer Size */
165 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE \
166 					+ sizeof(CONFIG_SYS_PROMPT) + 16)
167 /* Boot Argument Buffer Size */
168 #define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
169 
170 /*
171  * When we have SPI, NOR or NAND flash we expect to be making use of
172  * mtdparts, both for ease of use in U-Boot and for passing information
173  * on to the Linux kernel.
174  */
175 #if defined(CONFIG_SPI_BOOT) || defined(CONFIG_NOR) || defined(CONFIG_NAND) || defined(CONFIG_NAND_DAVINCI)
176 #define CONFIG_MTD_DEVICE		/* Required for mtdparts */
177 #define CONFIG_CMD_MTDPARTS
178 #endif
179 
180 #define CONFIG_SUPPORT_RAW_INITRD
181 
182 /*
183  * Common filesystems support.  When we have removable storage we
184  * enabled a number of useful commands and support.
185  */
186 #if defined(CONFIG_MMC) || defined(CONFIG_USB_STORAGE)
187 #define CONFIG_DOS_PARTITION
188 #define CONFIG_FAT_WRITE
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 make use of the general
196  * SPL framework found under common/spl/.  Given our generally common memory
197  * map, we set a number of related defaults and sizes here.
198  */
199 #if !defined(CONFIG_NOR_BOOT) && \
200 	!(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
201 #define CONFIG_SPL_FRAMEWORK
202 
203 /*
204  * We also support Falcon Mode so that the Linux kernel can be booted
205  * directly from SPL. This is not currently available on HS devices.
206  */
207 
208 /*
209  * Place the image at the start of the ROM defined image space (per
210  * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
211  * downloaded image area minus 1KiB for scratch space.  We initalize DRAM as
212  * soon as we can so that we can place stack, malloc and BSS there.  We load
213  * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict
214  * with older SPLs).  We have our BSS be placed 2MiB after this, to allow for
215  * the default Linux kernel address of 0x80008000 to work with most sized
216  * kernels, in the Falcon Mode case.  We have the SPL malloc pool at the end
217  * of the BSS area.  We suggest that the stack be placed at 32MiB after the
218  * start of DRAM to allow room for all of the above (handled in Kconfig).
219  */
220 #ifndef CONFIG_SYS_TEXT_BASE
221 #define CONFIG_SYS_TEXT_BASE		0x80800000
222 #endif
223 #ifndef CONFIG_SPL_BSS_START_ADDR
224 #define CONFIG_SPL_BSS_START_ADDR	0x80a00000
225 #define CONFIG_SPL_BSS_MAX_SIZE		0x80000		/* 512 KB */
226 #endif
227 #ifndef CONFIG_SYS_SPL_MALLOC_START
228 #define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SPL_BSS_START_ADDR + \
229 					 CONFIG_SPL_BSS_MAX_SIZE)
230 #define CONFIG_SYS_SPL_MALLOC_SIZE	SZ_8M
231 #endif
232 #ifndef CONFIG_SPL_MAX_SIZE
233 #define CONFIG_SPL_MAX_SIZE		(SRAM_SCRATCH_SPACE_ADDR - \
234 					 CONFIG_SPL_TEXT_BASE)
235 #endif
236 
237 
238 /* FAT sd card locations. */
239 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1
240 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME	"u-boot.img"
241 
242 #ifdef CONFIG_SPL_OS_BOOT
243 /* FAT */
244 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME		"uImage"
245 #define CONFIG_SPL_FS_LOAD_ARGS_NAME		"args"
246 
247 /* RAW SD card / eMMC */
248 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR	0x900	/* address 0x120000 */
249 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR	0x80	/* address 0x10000 */
250 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS	0x80	/* 64KiB */
251 
252 /* spl export command */
253 #define CONFIG_CMD_SPL
254 #endif
255 
256 #define CONFIG_SYS_THUMB_BUILD
257 
258 /* General parts of the framework, required. */
259 #define CONFIG_SPL_BOARD_INIT
260 
261 #ifdef CONFIG_NAND
262 #define CONFIG_SPL_NAND_BASE
263 #define CONFIG_SPL_NAND_DRIVERS
264 #define CONFIG_SPL_NAND_ECC
265 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
266 #endif
267 #endif /* !CONFIG_NOR_BOOT */
268 
269 /* Generic Environment Variables */
270 
271 #ifdef CONFIG_CMD_NET
272 #define NETARGS \
273 	"static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
274 		"::off\0" \
275 	"nfsopts=nolock\0" \
276 	"rootpath=/export/rootfs\0" \
277 	"netloadimage=tftp ${loadaddr} ${bootfile}\0" \
278 	"netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \
279 	"netargs=setenv bootargs console=${console} " \
280 		"${optargs} " \
281 		"root=/dev/nfs " \
282 		"nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
283 		"ip=dhcp\0" \
284 	"netboot=echo Booting from network ...; " \
285 		"setenv autoload no; " \
286 		"dhcp; " \
287 		"run netloadimage; " \
288 		"run netloadfdt; " \
289 		"run netargs; " \
290 		"bootz ${loadaddr} - ${fdtaddr}\0"
291 #else
292 #define NETARGS ""
293 #endif
294 
295 #include <config_distro_defaults.h>
296 
297 #endif	/* __CONFIG_TI_ARMV7_COMMON_H__ */
298