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 	"boot_fdt=try\0"
59 
60 #define DEFAULT_MMC_TI_ARGS \
61 	"mmcdev=0\0" \
62 	"mmcrootfstype=ext4 rootwait\0" \
63 	"finduuid=part uuid mmc ${bootpart} uuid\0" \
64 	"args_mmc=run finduuid;setenv bootargs console=${console} " \
65 		"${optargs} " \
66 		"root=PARTUUID=${uuid} rw " \
67 		"rootfstype=${mmcrootfstype}\0" \
68 	"loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr\0" \
69 	"bootscript=echo Running bootscript from mmc${mmcdev} ...; " \
70 		"source ${loadaddr}\0" \
71 	"bootenvfile=uEnv.txt\0" \
72 	"importbootenv=echo Importing environment from mmc${mmcdev} ...; " \
73 		"env import -t ${loadaddr} ${filesize}\0" \
74 	"loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenvfile}\0" \
75 	"loadimage=load ${devtype} ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
76 	"loadfdt=load ${devtype} ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
77 	"envboot=mmc dev ${mmcdev}; " \
78 		"if mmc rescan; then " \
79 			"echo SD/MMC found on device ${mmcdev};" \
80 			"if run loadbootscript; then " \
81 				"run bootscript;" \
82 			"else " \
83 				"if run loadbootenv; then " \
84 					"echo Loaded env from ${bootenvfile};" \
85 					"run importbootenv;" \
86 				"fi;" \
87 				"if test -n $uenvcmd; then " \
88 					"echo Running uenvcmd ...;" \
89 					"run uenvcmd;" \
90 				"fi;" \
91 			"fi;" \
92 		"fi;\0" \
93 	"mmcloados=run args_mmc; " \
94 		"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
95 			"if run loadfdt; then " \
96 				"bootz ${loadaddr} - ${fdtaddr}; " \
97 			"else " \
98 				"if test ${boot_fdt} = try; then " \
99 					"bootz; " \
100 				"else " \
101 					"echo WARN: Cannot load the DT; " \
102 				"fi; " \
103 			"fi; " \
104 		"else " \
105 			"bootz; " \
106 		"fi;\0" \
107 	"mmcboot=mmc dev ${mmcdev}; " \
108 		"setenv devnum ${mmcdev}; " \
109 		"setenv devtype mmc; " \
110 		"if mmc rescan; then " \
111 			"echo SD/MMC found on device ${mmcdev};" \
112 			"if run loadimage; then " \
113 				"if test ${boot_fit} -eq 1; then " \
114 					"run loadfit; " \
115 				"else " \
116 					"run mmcloados;" \
117 				"fi;" \
118 			"fi;" \
119 		"fi;\0" \
120 
121 #define DEFAULT_FIT_TI_ARGS \
122 	"boot_fit=0\0" \
123 	"fit_loadaddr=0x88000000\0" \
124 	"fit_bootfile=fitImage.itb\0" \
125 	"update_to_fit=setenv loadaddr ${fit_loadaddr}; setenv bootfile ${fit_bootfile}\0" \
126 	"args_fit=setenv bootargs console=${console} \0" \
127 	"loadfit=run args_fit; bootm ${loadaddr}#${fdtfile};\0" \
128 
129 /*
130  * DDR information.  If the CONFIG_NR_DRAM_BANKS is not defined,
131  * we say (for simplicity) that we have 1 bank, always, even when
132  * we have more.  We always start at 0x80000000, and we place the
133  * initial stack pointer in our SRAM. Otherwise, we can define
134  * CONFIG_NR_DRAM_BANKS before including this file.
135  */
136 #ifndef CONFIG_NR_DRAM_BANKS
137 #define CONFIG_NR_DRAM_BANKS		1
138 #endif
139 #define CONFIG_SYS_SDRAM_BASE		0x80000000
140 
141 #ifndef CONFIG_SYS_INIT_SP_ADDR
142 #define CONFIG_SYS_INIT_SP_ADDR         (NON_SECURE_SRAM_END - \
143 						GENERATED_GBL_DATA_SIZE)
144 #endif
145 
146 /* Timer information. */
147 #define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
148 
149 /*
150  * Disable DM_* for SPL build and can be re-enabled after adding
151  * DM support in SPL
152  */
153 #ifdef CONFIG_SPL_BUILD
154 #undef CONFIG_DM_I2C
155 #endif
156 
157 /* I2C IP block */
158 #define CONFIG_I2C
159 #ifndef CONFIG_DM_I2C
160 #define CONFIG_SYS_I2C
161 #else
162 /*
163  * Enable CONFIG_DM_I2C_COMPAT temporarily until all the i2c client
164  * devices are adopted to DM
165  */
166 #define CONFIG_DM_I2C_COMPAT
167 #endif
168 
169 /* MMC/SD IP block */
170 #define CONFIG_GENERIC_MMC
171 
172 /* McSPI IP block */
173 #define CONFIG_SPI
174 
175 /* GPIO block */
176 
177 /*
178  * The following are general good-enough settings for U-Boot.  We set a
179  * large malloc pool as we generally have a lot of DDR, and we opt for
180  * function over binary size in the main portion of U-Boot as this is
181  * generally easily constrained later if needed.  We enable the config
182  * options that give us information in the environment about what board
183  * we are on so we do not need to rely on the command prompt.  We set a
184  * console baudrate of 115200 and use the default baud rate table.
185  */
186 #define CONFIG_SYS_MALLOC_LEN		SZ_32M
187 #define CONFIG_BAUDRATE			115200
188 #define CONFIG_ENV_VARS_UBOOT_CONFIG	/* Strongly encouraged */
189 #define CONFIG_ENV_OVERWRITE		/* Overwrite ethaddr / serial# */
190 
191 /* As stated above, the following choices are optional. */
192 #define CONFIG_SYS_LONGHELP
193 #define CONFIG_AUTO_COMPLETE
194 #define CONFIG_CMDLINE_EDITING
195 
196 /* We set the max number of command args high to avoid HUSH bugs. */
197 #define CONFIG_SYS_MAXARGS		64
198 
199 /* Console I/O Buffer Size */
200 #define CONFIG_SYS_CBSIZE		1024
201 /* Print Buffer Size */
202 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE \
203 					+ sizeof(CONFIG_SYS_PROMPT) + 16)
204 /* Boot Argument Buffer Size */
205 #define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
206 
207 /*
208  * When we have SPI, NOR or NAND flash we expect to be making use of
209  * mtdparts, both for ease of use in U-Boot and for passing information
210  * on to the Linux kernel.
211  */
212 #if defined(CONFIG_SPI_BOOT) || defined(CONFIG_NOR) || defined(CONFIG_NAND) || defined(CONFIG_NAND_DAVINCI)
213 #define CONFIG_MTD_DEVICE		/* Required for mtdparts */
214 #define CONFIG_CMD_MTDPARTS
215 #endif
216 
217 #define CONFIG_SUPPORT_RAW_INITRD
218 
219 /*
220  * Common filesystems support.  When we have removable storage we
221  * enabled a number of useful commands and support.
222  */
223 #if defined(CONFIG_MMC) || defined(CONFIG_USB_STORAGE)
224 #define CONFIG_FAT_WRITE
225 #endif
226 
227 /*
228  * Our platforms make use of SPL to initalize the hardware (primarily
229  * memory) enough for full U-Boot to be loaded. We make use of the general
230  * SPL framework found under common/spl/.  Given our generally common memory
231  * map, we set a number of related defaults and sizes here.
232  */
233 #if !defined(CONFIG_NOR_BOOT) && \
234 	!(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
235 #define CONFIG_SPL_FRAMEWORK
236 
237 /*
238  * We also support Falcon Mode so that the Linux kernel can be booted
239  * directly from SPL. This is not currently available on HS devices.
240  */
241 
242 /*
243  * Place the image at the start of the ROM defined image space (per
244  * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
245  * downloaded image area minus 1KiB for scratch space.  We initalize DRAM as
246  * soon as we can so that we can place stack, malloc and BSS there.  We load
247  * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict
248  * with older SPLs).  We have our BSS be placed 2MiB after this, to allow for
249  * the default Linux kernel address of 0x80008000 to work with most sized
250  * kernels, in the Falcon Mode case.  We have the SPL malloc pool at the end
251  * of the BSS area.  We suggest that the stack be placed at 32MiB after the
252  * start of DRAM to allow room for all of the above (handled in Kconfig).
253  */
254 #ifndef CONFIG_SYS_TEXT_BASE
255 #define CONFIG_SYS_TEXT_BASE		0x80800000
256 #endif
257 #ifndef CONFIG_SPL_BSS_START_ADDR
258 #define CONFIG_SPL_BSS_START_ADDR	0x80a00000
259 #define CONFIG_SPL_BSS_MAX_SIZE		0x80000		/* 512 KB */
260 #endif
261 #ifndef CONFIG_SYS_SPL_MALLOC_START
262 #define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SPL_BSS_START_ADDR + \
263 					 CONFIG_SPL_BSS_MAX_SIZE)
264 #define CONFIG_SYS_SPL_MALLOC_SIZE	SZ_8M
265 #endif
266 #ifndef CONFIG_SPL_MAX_SIZE
267 #define CONFIG_SPL_MAX_SIZE		(SRAM_SCRATCH_SPACE_ADDR - \
268 					 CONFIG_SPL_TEXT_BASE)
269 #endif
270 
271 
272 /* FAT sd card locations. */
273 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1
274 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME	"u-boot.img"
275 
276 #ifdef CONFIG_SPL_OS_BOOT
277 /* FAT */
278 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME		"uImage"
279 #define CONFIG_SPL_FS_LOAD_ARGS_NAME		"args"
280 
281 /* RAW SD card / eMMC */
282 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR	0x900	/* address 0x120000 */
283 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR	0x80	/* address 0x10000 */
284 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS	0x80	/* 64KiB */
285 
286 /* spl export command */
287 #define CONFIG_CMD_SPL
288 #endif
289 
290 #define CONFIG_SYS_THUMB_BUILD
291 
292 /* General parts of the framework, required. */
293 #define CONFIG_SPL_BOARD_INIT
294 
295 #ifdef CONFIG_NAND
296 #define CONFIG_SPL_NAND_BASE
297 #define CONFIG_SPL_NAND_DRIVERS
298 #define CONFIG_SPL_NAND_ECC
299 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
300 #endif
301 #endif /* !CONFIG_NOR_BOOT */
302 
303 /* Generic Environment Variables */
304 
305 #ifdef CONFIG_CMD_NET
306 #define NETARGS \
307 	"static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
308 		"::off\0" \
309 	"nfsopts=nolock\0" \
310 	"rootpath=/export/rootfs\0" \
311 	"netloadimage=tftp ${loadaddr} ${bootfile}\0" \
312 	"netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \
313 	"netargs=setenv bootargs console=${console} " \
314 		"${optargs} " \
315 		"root=/dev/nfs " \
316 		"nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
317 		"ip=dhcp\0" \
318 	"netboot=echo Booting from network ...; " \
319 		"setenv autoload no; " \
320 		"dhcp; " \
321 		"run netloadimage; " \
322 		"run netloadfdt; " \
323 		"run netargs; " \
324 		"bootz ${loadaddr} - ${fdtaddr}\0"
325 #else
326 #define NETARGS ""
327 #endif
328 
329 #include <config_distro_defaults.h>
330 
331 #endif	/* __CONFIG_TI_ARMV7_COMMON_H__ */
332