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 ${loadaddr}:kernel@1 " \
128 		"${loadaddr}:ramdisk@1 ${loadaddr}:${fdtfile};\0" \
129 
130 /*
131  * DDR information.  If the CONFIG_NR_DRAM_BANKS is not defined,
132  * we say (for simplicity) that we have 1 bank, always, even when
133  * we have more.  We always start at 0x80000000, and we place the
134  * initial stack pointer in our SRAM. Otherwise, we can define
135  * CONFIG_NR_DRAM_BANKS before including this file.
136  */
137 #ifndef CONFIG_NR_DRAM_BANKS
138 #define CONFIG_NR_DRAM_BANKS		1
139 #endif
140 #define CONFIG_SYS_SDRAM_BASE		0x80000000
141 
142 #ifndef CONFIG_SYS_INIT_SP_ADDR
143 #define CONFIG_SYS_INIT_SP_ADDR         (NON_SECURE_SRAM_END - \
144 						GENERATED_GBL_DATA_SIZE)
145 #endif
146 
147 /* Timer information. */
148 #define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
149 
150 /*
151  * Disable DM_* for SPL build and can be re-enabled after adding
152  * DM support in SPL
153  */
154 #ifdef CONFIG_SPL_BUILD
155 #undef CONFIG_DM_I2C
156 #endif
157 
158 /* I2C IP block */
159 #define CONFIG_I2C
160 #ifndef CONFIG_DM_I2C
161 #define CONFIG_SYS_I2C
162 #else
163 /*
164  * Enable CONFIG_DM_I2C_COMPAT temporarily until all the i2c client
165  * devices are adopted to DM
166  */
167 #define CONFIG_DM_I2C_COMPAT
168 #endif
169 
170 /* MMC/SD IP block */
171 #define CONFIG_GENERIC_MMC
172 
173 /* McSPI IP block */
174 #define CONFIG_SPI
175 
176 /* GPIO block */
177 
178 /*
179  * The following are general good-enough settings for U-Boot.  We set a
180  * large malloc pool as we generally have a lot of DDR, and we opt for
181  * function over binary size in the main portion of U-Boot as this is
182  * generally easily constrained later if needed.  We enable the config
183  * options that give us information in the environment about what board
184  * we are on so we do not need to rely on the command prompt.  We set a
185  * console baudrate of 115200 and use the default baud rate table.
186  */
187 #define CONFIG_SYS_MALLOC_LEN		SZ_32M
188 #define CONFIG_BAUDRATE			115200
189 #define CONFIG_ENV_VARS_UBOOT_CONFIG	/* Strongly encouraged */
190 #define CONFIG_ENV_OVERWRITE		/* Overwrite ethaddr / serial# */
191 
192 /* As stated above, the following choices are optional. */
193 #define CONFIG_SYS_LONGHELP
194 #define CONFIG_AUTO_COMPLETE
195 #define CONFIG_CMDLINE_EDITING
196 
197 /* We set the max number of command args high to avoid HUSH bugs. */
198 #define CONFIG_SYS_MAXARGS		64
199 
200 /* Console I/O Buffer Size */
201 #define CONFIG_SYS_CBSIZE		1024
202 /* Print Buffer Size */
203 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE \
204 					+ sizeof(CONFIG_SYS_PROMPT) + 16)
205 /* Boot Argument Buffer Size */
206 #define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE
207 
208 /*
209  * When we have SPI, NOR or NAND flash we expect to be making use of
210  * mtdparts, both for ease of use in U-Boot and for passing information
211  * on to the Linux kernel.
212  */
213 #if defined(CONFIG_SPI_BOOT) || defined(CONFIG_NOR) || defined(CONFIG_NAND) || defined(CONFIG_NAND_DAVINCI)
214 #define CONFIG_MTD_DEVICE		/* Required for mtdparts */
215 #define CONFIG_CMD_MTDPARTS
216 #endif
217 
218 #define CONFIG_SUPPORT_RAW_INITRD
219 
220 /*
221  * Common filesystems support.  When we have removable storage we
222  * enabled a number of useful commands and support.
223  */
224 #if defined(CONFIG_MMC) || defined(CONFIG_USB_STORAGE)
225 #define CONFIG_DOS_PARTITION
226 #define CONFIG_FAT_WRITE
227 #define CONFIG_PARTITION_UUIDS
228 #define CONFIG_CMD_PART
229 #endif
230 
231 /*
232  * Our platforms make use of SPL to initalize the hardware (primarily
233  * memory) enough for full U-Boot to be loaded. We make use of the general
234  * SPL framework found under common/spl/.  Given our generally common memory
235  * map, we set a number of related defaults and sizes here.
236  */
237 #if !defined(CONFIG_NOR_BOOT) && \
238 	!(defined(CONFIG_QSPI_BOOT) && defined(CONFIG_AM43XX))
239 #define CONFIG_SPL_FRAMEWORK
240 
241 /*
242  * We also support Falcon Mode so that the Linux kernel can be booted
243  * directly from SPL. This is not currently available on HS devices.
244  */
245 
246 /*
247  * Place the image at the start of the ROM defined image space (per
248  * CONFIG_SPL_TEXT_BASE and we limit our size to the ROM-defined
249  * downloaded image area minus 1KiB for scratch space.  We initalize DRAM as
250  * soon as we can so that we can place stack, malloc and BSS there.  We load
251  * U-Boot itself into memory at 0x80800000 for legacy reasons (to not conflict
252  * with older SPLs).  We have our BSS be placed 2MiB after this, to allow for
253  * the default Linux kernel address of 0x80008000 to work with most sized
254  * kernels, in the Falcon Mode case.  We have the SPL malloc pool at the end
255  * of the BSS area.  We suggest that the stack be placed at 32MiB after the
256  * start of DRAM to allow room for all of the above (handled in Kconfig).
257  */
258 #ifndef CONFIG_SYS_TEXT_BASE
259 #define CONFIG_SYS_TEXT_BASE		0x80800000
260 #endif
261 #ifndef CONFIG_SPL_BSS_START_ADDR
262 #define CONFIG_SPL_BSS_START_ADDR	0x80a00000
263 #define CONFIG_SPL_BSS_MAX_SIZE		0x80000		/* 512 KB */
264 #endif
265 #ifndef CONFIG_SYS_SPL_MALLOC_START
266 #define CONFIG_SYS_SPL_MALLOC_START	(CONFIG_SPL_BSS_START_ADDR + \
267 					 CONFIG_SPL_BSS_MAX_SIZE)
268 #define CONFIG_SYS_SPL_MALLOC_SIZE	SZ_8M
269 #endif
270 #ifndef CONFIG_SPL_MAX_SIZE
271 #define CONFIG_SPL_MAX_SIZE		(SRAM_SCRATCH_SPACE_ADDR - \
272 					 CONFIG_SPL_TEXT_BASE)
273 #endif
274 
275 
276 /* FAT sd card locations. */
277 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1
278 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME	"u-boot.img"
279 
280 #ifdef CONFIG_SPL_OS_BOOT
281 /* FAT */
282 #define CONFIG_SPL_FS_LOAD_KERNEL_NAME		"uImage"
283 #define CONFIG_SPL_FS_LOAD_ARGS_NAME		"args"
284 
285 /* RAW SD card / eMMC */
286 #define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR	0x900	/* address 0x120000 */
287 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR	0x80	/* address 0x10000 */
288 #define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS	0x80	/* 64KiB */
289 
290 /* spl export command */
291 #define CONFIG_CMD_SPL
292 #endif
293 
294 #define CONFIG_SYS_THUMB_BUILD
295 
296 /* General parts of the framework, required. */
297 #define CONFIG_SPL_BOARD_INIT
298 
299 #ifdef CONFIG_NAND
300 #define CONFIG_SPL_NAND_BASE
301 #define CONFIG_SPL_NAND_DRIVERS
302 #define CONFIG_SPL_NAND_ECC
303 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_TEXT_BASE
304 #endif
305 #endif /* !CONFIG_NOR_BOOT */
306 
307 /* Generic Environment Variables */
308 
309 #ifdef CONFIG_CMD_NET
310 #define NETARGS \
311 	"static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}" \
312 		"::off\0" \
313 	"nfsopts=nolock\0" \
314 	"rootpath=/export/rootfs\0" \
315 	"netloadimage=tftp ${loadaddr} ${bootfile}\0" \
316 	"netloadfdt=tftp ${fdtaddr} ${fdtfile}\0" \
317 	"netargs=setenv bootargs console=${console} " \
318 		"${optargs} " \
319 		"root=/dev/nfs " \
320 		"nfsroot=${serverip}:${rootpath},${nfsopts} rw " \
321 		"ip=dhcp\0" \
322 	"netboot=echo Booting from network ...; " \
323 		"setenv autoload no; " \
324 		"dhcp; " \
325 		"run netloadimage; " \
326 		"run netloadfdt; " \
327 		"run netargs; " \
328 		"bootz ${loadaddr} - ${fdtaddr}\0"
329 #else
330 #define NETARGS ""
331 #endif
332 
333 #include <config_distro_defaults.h>
334 
335 #endif	/* __CONFIG_TI_ARMV7_COMMON_H__ */
336