1 /*
2  * (C) Copyright 2014
3  * NVIDIA Corporation <www.nvidia.com>
4  *
5  * Copyright 2014 Red Hat, Inc.
6  *
7  * SPDX-License-Identifier:     GPL-2.0+
8  */
9 
10 #ifndef _CONFIG_CMD_DISTRO_BOOTCMD_H
11 #define _CONFIG_CMD_DISTRO_BOOTCMD_H
12 
13 /*
14  * A note on error handling: It is possible for BOOT_TARGET_DEVICES to
15  * reference a device that is not enabled in the U-Boot configuration, e.g.
16  * it may include MMC in the list without CONFIG_CMD_MMC being enabled. Given
17  * that BOOT_TARGET_DEVICES is a macro that's expanded by the C pre-processor
18  * at compile time, it's not  possible to detect and report such problems via
19  * a simple #ifdef/#error combination. Still, the code needs to report errors.
20  * The best way I've found to do this is to make BOOT_TARGET_DEVICES expand to
21  * reference a non-existent symbol, and have the name of that symbol encode
22  * the error message. Consequently, this file contains references to e.g.
23  * BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC. Given the
24  * prevalence of capitals here, this looks like a pre-processor macro and
25  * hence seems like it should be all capitals, but it's really an error
26  * message that includes some other pre-processor symbols in the text.
27  */
28 
29 #define BOOTENV_SHARED_BLKDEV_BODY(devtypel) \
30 		"if " #devtypel " dev ${devnum}; then " \
31 			"setenv devtype " #devtypel "; " \
32 			"run scan_dev_for_boot_part; " \
33 		"fi\0"
34 
35 #define BOOTENV_SHARED_BLKDEV(devtypel) \
36 	#devtypel "_boot=" \
37 	BOOTENV_SHARED_BLKDEV_BODY(devtypel)
38 
39 #define BOOTENV_DEV_BLKDEV(devtypeu, devtypel, instance) \
40 	"bootcmd_" #devtypel #instance "=" \
41 		"setenv devnum " #instance "; " \
42 		"run " #devtypel "_boot\0"
43 
44 #define BOOTENV_DEV_NAME_BLKDEV(devtypeu, devtypel, instance) \
45 	#devtypel #instance " "
46 
47 #ifdef CONFIG_SANDBOX
48 #define BOOTENV_SHARED_HOST	BOOTENV_SHARED_BLKDEV(host)
49 #define BOOTENV_DEV_HOST	BOOTENV_DEV_BLKDEV
50 #define BOOTENV_DEV_NAME_HOST	BOOTENV_DEV_NAME_BLKDEV
51 #else
52 #define BOOTENV_SHARED_HOST
53 #define BOOTENV_DEV_HOST \
54 	BOOT_TARGET_DEVICES_references_HOST_without_CONFIG_SANDBOX
55 #define BOOTENV_DEV_NAME_HOST \
56 	BOOT_TARGET_DEVICES_references_HOST_without_CONFIG_SANDBOX
57 #endif
58 
59 #ifdef CONFIG_CMD_MMC
60 #define BOOTENV_SHARED_MMC	BOOTENV_SHARED_BLKDEV(mmc)
61 #define BOOTENV_DEV_MMC		BOOTENV_DEV_BLKDEV
62 #define BOOTENV_DEV_NAME_MMC	BOOTENV_DEV_NAME_BLKDEV
63 #else
64 #define BOOTENV_SHARED_MMC
65 #define BOOTENV_DEV_MMC \
66 	BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC
67 #define BOOTENV_DEV_NAME_MMC \
68 	BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC
69 #endif
70 
71 #ifdef CONFIG_CMD_UBIFS
72 #define BOOTENV_SHARED_UBIFS \
73 	"ubifs_boot=" \
74 		"if ubi part UBI && ubifsmount ubi${devnum}:boot; then "  \
75 			"setenv devtype ubi; "                            \
76 			"setenv bootpart 0; "                             \
77 			"run scan_dev_for_boot; "                         \
78 		"fi\0"
79 #define BOOTENV_DEV_UBIFS	BOOTENV_DEV_BLKDEV
80 #define BOOTENV_DEV_NAME_UBIFS	BOOTENV_DEV_NAME_BLKDEV
81 #else
82 #define BOOTENV_SHARED_UBIFS
83 #define BOOTENV_DEV_UBIFS \
84 	BOOT_TARGET_DEVICES_references_UBIFS_without_CONFIG_CMD_UBIFS
85 #define BOOTENV_DEV_NAME_UBIFS \
86 	BOOT_TARGET_DEVICES_references_UBIFS_without_CONFIG_CMD_UBIFS
87 #endif
88 
89 #ifdef CONFIG_EFI_LOADER
90 #if defined(CONFIG_ARM64)
91 #define BOOTEFI_NAME "bootaa64.efi"
92 #elif defined(CONFIG_ARM)
93 #define BOOTEFI_NAME "bootarm.efi"
94 #endif
95 #endif
96 
97 #ifdef BOOTEFI_NAME
98 #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
99 /*
100  * On 32bit ARM systems there is a reasonable number of systems that follow
101  * the $soc-$board$boardver.dtb name scheme for their device trees. Use that
102  * scheme if we don't have an explicit fdtfile variable.
103  */
104 #define BOOTENV_EFI_SET_FDTFILE_FALLBACK                                  \
105 	"if test -z \"${fdtfile}\" -a -n \"${soc}\"; then "               \
106 	  "setenv efi_fdtfile ${soc}-${board}${boardver}.dtb; "           \
107 	"fi; "
108 #else
109 #define BOOTENV_EFI_SET_FDTFILE_FALLBACK
110 #endif
111 
112 
113 #define BOOTENV_SHARED_EFI                                                \
114 	"boot_efi_binary="                                                \
115 		"load ${devtype} ${devnum}:${distro_bootpart} "           \
116 			"${kernel_addr_r} efi/boot/"BOOTEFI_NAME"; "      \
117 		"if fdt addr ${fdt_addr_r}; then "                        \
118 			"bootefi ${kernel_addr_r} ${fdt_addr_r};"         \
119 		"else "                                                    \
120 			"bootefi ${kernel_addr_r} ${fdtcontroladdr};"     \
121 		"fi\0"                                                    \
122 	\
123 	"load_efi_dtb="                                                   \
124 		"load ${devtype} ${devnum}:${distro_bootpart} "           \
125 			"${fdt_addr_r} ${prefix}${efi_fdtfile}\0"         \
126 	\
127 	"efi_dtb_prefixes=/ /dtb/ /dtb/current/\0"                        \
128 	"scan_dev_for_efi="                                               \
129 		"setenv efi_fdtfile ${fdtfile}; "                         \
130 		BOOTENV_EFI_SET_FDTFILE_FALLBACK                          \
131 		"for prefix in ${efi_dtb_prefixes}; do "                  \
132 			"if test -e ${devtype} "                          \
133 					"${devnum}:${distro_bootpart} "   \
134 					"${prefix}${efi_fdtfile}; then "  \
135 				"run load_efi_dtb; "                      \
136 			"fi;"                                             \
137 		"done;"                                                   \
138 		"if test -e ${devtype} ${devnum}:${distro_bootpart} "     \
139 					"efi/boot/"BOOTEFI_NAME"; then "  \
140 				"echo Found EFI removable media binary "  \
141 					"efi/boot/"BOOTEFI_NAME"; "       \
142 				"run boot_efi_binary; "                   \
143 				"echo EFI LOAD FAILED: continuing...; "   \
144 		"fi; "                                                    \
145 		"setenv efi_fdtfile\0"
146 #define SCAN_DEV_FOR_EFI "run scan_dev_for_efi;"
147 #else
148 #define BOOTENV_SHARED_EFI
149 #define SCAN_DEV_FOR_EFI
150 #endif
151 
152 #ifdef CONFIG_SATA
153 #define BOOTENV_SHARED_SATA	BOOTENV_SHARED_BLKDEV(sata)
154 #define BOOTENV_DEV_SATA	BOOTENV_DEV_BLKDEV
155 #define BOOTENV_DEV_NAME_SATA	BOOTENV_DEV_NAME_BLKDEV
156 #else
157 #define BOOTENV_SHARED_SATA
158 #define BOOTENV_DEV_SATA \
159 	BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_SATA
160 #define BOOTENV_DEV_NAME_SATA \
161 	BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_SATA
162 #endif
163 
164 #ifdef CONFIG_SCSI
165 #define BOOTENV_RUN_SCSI_INIT "run scsi_init; "
166 #define BOOTENV_SET_SCSI_NEED_INIT "setenv scsi_need_init; "
167 #define BOOTENV_SHARED_SCSI \
168 	"scsi_init=" \
169 		"if ${scsi_need_init}; then " \
170 			"setenv scsi_need_init false; " \
171 			"scsi scan; " \
172 		"fi\0" \
173 	\
174 	"scsi_boot=" \
175 		BOOTENV_RUN_SCSI_INIT \
176 		BOOTENV_SHARED_BLKDEV_BODY(scsi)
177 #define BOOTENV_DEV_SCSI	BOOTENV_DEV_BLKDEV
178 #define BOOTENV_DEV_NAME_SCSI	BOOTENV_DEV_NAME_BLKDEV
179 #else
180 #define BOOTENV_RUN_SCSI_INIT
181 #define BOOTENV_SET_SCSI_NEED_INIT
182 #define BOOTENV_SHARED_SCSI
183 #define BOOTENV_DEV_SCSI \
184 	BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_SCSI
185 #define BOOTENV_DEV_NAME_SCSI \
186 	BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_SCSI
187 #endif
188 
189 #ifdef CONFIG_IDE
190 #define BOOTENV_SHARED_IDE	BOOTENV_SHARED_BLKDEV(ide)
191 #define BOOTENV_DEV_IDE		BOOTENV_DEV_BLKDEV
192 #define BOOTENV_DEV_NAME_IDE	BOOTENV_DEV_NAME_BLKDEV
193 #else
194 #define BOOTENV_SHARED_IDE
195 #define BOOTENV_DEV_IDE \
196 	BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_IDE
197 #define BOOTENV_DEV_NAME_IDE \
198 	BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_IDE
199 #endif
200 
201 #if defined(CONFIG_DM_PCI)
202 #define BOOTENV_RUN_NET_PCI_ENUM "run boot_net_pci_enum; "
203 #define BOOTENV_SHARED_PCI \
204 	"boot_net_pci_enum=pci enum\0"
205 #else
206 #define BOOTENV_RUN_NET_PCI_ENUM
207 #define BOOTENV_SHARED_PCI
208 #endif
209 
210 #ifdef CONFIG_CMD_USB
211 #define BOOTENV_RUN_NET_USB_START "run boot_net_usb_start; "
212 #define BOOTENV_SHARED_USB \
213 	"boot_net_usb_start=usb start\0" \
214 	"usb_boot=" \
215 		"usb start; " \
216 		BOOTENV_SHARED_BLKDEV_BODY(usb)
217 #define BOOTENV_DEV_USB		BOOTENV_DEV_BLKDEV
218 #define BOOTENV_DEV_NAME_USB	BOOTENV_DEV_NAME_BLKDEV
219 #else
220 #define BOOTENV_RUN_NET_USB_START
221 #define BOOTENV_SHARED_USB
222 #define BOOTENV_DEV_USB \
223 	BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB
224 #define BOOTENV_DEV_NAME_USB \
225 	BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB
226 #endif
227 
228 #if defined(CONFIG_CMD_DHCP)
229 #if defined(CONFIG_EFI_LOADER)
230 #if defined(CONFIG_ARM64)
231 #define BOOTENV_EFI_PXE_ARCH "0xb"
232 #define BOOTENV_EFI_PXE_VCI "PXEClient:Arch:00011:UNDI:003000"
233 #elif defined(CONFIG_ARM)
234 #define BOOTENV_EFI_PXE_ARCH "0xa"
235 #define BOOTENV_EFI_PXE_VCI "PXEClient:Arch:00010:UNDI:003000"
236 #elif defined(CONFIG_X86)
237 /* Always assume we're running 64bit */
238 #define BOOTENV_EFI_PXE_ARCH "0x7"
239 #define BOOTENV_EFI_PXE_VCI "PXEClient:Arch:00007:UNDI:003000"
240 #else
241 #error Please specify an EFI client identifier
242 #endif
243 
244 /*
245  * Ask the dhcp server for an EFI binary. If we get one, check for a
246  * device tree in the same folder. Then boot everything. If the file was
247  * not an EFI binary, we just return from the bootefi command and continue.
248  */
249 #define BOOTENV_EFI_RUN_DHCP \
250 	"setenv efi_fdtfile ${fdtfile}; "                                 \
251 	BOOTENV_EFI_SET_FDTFILE_FALLBACK                                  \
252 	"setenv efi_old_vci ${bootp_vci};"                                \
253 	"setenv efi_old_arch ${bootp_arch};"                              \
254 	"setenv bootp_vci " BOOTENV_EFI_PXE_VCI ";"                       \
255 	"setenv bootp_arch " BOOTENV_EFI_PXE_ARCH ";"                     \
256 	"if dhcp ${kernel_addr_r}; then "                                 \
257 		"tftpboot ${fdt_addr_r} dtb/${efi_fdtfile};"              \
258 		"if fdt addr ${fdt_addr_r}; then "                        \
259 			"bootefi ${kernel_addr_r} ${fdt_addr_r}; "        \
260 		"else "                                                   \
261 			"bootefi ${kernel_addr_r} ${fdtcontroladdr};"     \
262 		"fi;"                                                     \
263 	"fi;"                                                             \
264 	"setenv bootp_vci ${efi_old_vci};"                                \
265 	"setenv bootp_arch ${efi_old_arch};"                              \
266 	"setenv efi_fdtfile;"                                             \
267 	"setenv efi_old_arch;"                                            \
268 	"setenv efi_old_vci;"
269 #else
270 #define BOOTENV_EFI_RUN_DHCP
271 #endif
272 #define BOOTENV_DEV_DHCP(devtypeu, devtypel, instance) \
273 	"bootcmd_dhcp=" \
274 		BOOTENV_RUN_NET_USB_START \
275 		BOOTENV_RUN_NET_PCI_ENUM \
276 		"if dhcp ${scriptaddr} ${boot_script_dhcp}; then " \
277 			"source ${scriptaddr}; " \
278 		"fi;" \
279 		BOOTENV_EFI_RUN_DHCP \
280 		"\0"
281 #define BOOTENV_DEV_NAME_DHCP(devtypeu, devtypel, instance) \
282 	"dhcp "
283 #else
284 #define BOOTENV_DEV_DHCP \
285 	BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP
286 #define BOOTENV_DEV_NAME_DHCP \
287 	BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP
288 #endif
289 
290 #if defined(CONFIG_CMD_DHCP) && defined(CONFIG_CMD_PXE)
291 #define BOOTENV_DEV_PXE(devtypeu, devtypel, instance) \
292 	"bootcmd_pxe=" \
293 		BOOTENV_RUN_NET_USB_START \
294 		BOOTENV_RUN_NET_PCI_ENUM \
295 		"dhcp; " \
296 		"if pxe get; then " \
297 			"pxe boot; " \
298 		"fi\0"
299 #define BOOTENV_DEV_NAME_PXE(devtypeu, devtypel, instance) \
300 	"pxe "
301 #else
302 #define BOOTENV_DEV_PXE \
303 	BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE
304 #define BOOTENV_DEV_NAME_PXE \
305 	BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE
306 #endif
307 
308 #define BOOTENV_DEV_NAME(devtypeu, devtypel, instance) \
309 	BOOTENV_DEV_NAME_##devtypeu(devtypeu, devtypel, instance)
310 #define BOOTENV_BOOT_TARGETS \
311 	"boot_targets=" BOOT_TARGET_DEVICES(BOOTENV_DEV_NAME) "\0"
312 
313 #define BOOTENV_DEV(devtypeu, devtypel, instance) \
314 	BOOTENV_DEV_##devtypeu(devtypeu, devtypel, instance)
315 #define BOOTENV \
316 	BOOTENV_SHARED_HOST \
317 	BOOTENV_SHARED_MMC \
318 	BOOTENV_SHARED_PCI \
319 	BOOTENV_SHARED_USB \
320 	BOOTENV_SHARED_SATA \
321 	BOOTENV_SHARED_SCSI \
322 	BOOTENV_SHARED_IDE \
323 	BOOTENV_SHARED_UBIFS \
324 	BOOTENV_SHARED_EFI \
325 	"boot_prefixes=/ /boot/\0" \
326 	"boot_scripts=boot.scr.uimg boot.scr\0" \
327 	"boot_script_dhcp=boot.scr.uimg\0" \
328 	BOOTENV_BOOT_TARGETS \
329 	\
330 	"boot_extlinux="                                                  \
331 		"sysboot ${devtype} ${devnum}:${distro_bootpart} any "    \
332 			"${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \
333 	\
334 	"scan_dev_for_extlinux="                                          \
335 		"if test -e ${devtype} "                                  \
336 				"${devnum}:${distro_bootpart} "           \
337 				"${prefix}extlinux/extlinux.conf; then "  \
338 			"echo Found ${prefix}extlinux/extlinux.conf; "    \
339 			"run boot_extlinux; "                             \
340 			"echo SCRIPT FAILED: continuing...; "             \
341 		"fi\0"                                                    \
342 	\
343 	"boot_a_script="                                                  \
344 		"load ${devtype} ${devnum}:${distro_bootpart} "           \
345 			"${scriptaddr} ${prefix}${script}; "              \
346 		"source ${scriptaddr}\0"                                  \
347 	\
348 	"scan_dev_for_scripts="                                           \
349 		"for script in ${boot_scripts}; do "                      \
350 			"if test -e ${devtype} "                          \
351 					"${devnum}:${distro_bootpart} "   \
352 					"${prefix}${script}; then "       \
353 				"echo Found U-Boot script "               \
354 					"${prefix}${script}; "            \
355 				"run boot_a_script; "                     \
356 				"echo SCRIPT FAILED: continuing...; "     \
357 			"fi; "                                            \
358 		"done\0"                                                  \
359 	\
360 	"scan_dev_for_boot="                                              \
361 		"echo Scanning ${devtype} "                               \
362 				"${devnum}:${distro_bootpart}...; "       \
363 		"for prefix in ${boot_prefixes}; do "                     \
364 			"run scan_dev_for_extlinux; "                     \
365 			"run scan_dev_for_scripts; "                      \
366 		"done;"                                                   \
367 		SCAN_DEV_FOR_EFI                                          \
368 		"\0"                                                      \
369 	\
370 	"scan_dev_for_boot_part="                                         \
371 		"part list ${devtype} ${devnum} -bootable devplist; "     \
372 		"env exists devplist || setenv devplist 1; "              \
373 		"for distro_bootpart in ${devplist}; do "                 \
374 			"if fstype ${devtype} "                           \
375 					"${devnum}:${distro_bootpart} "   \
376 					"bootfstype; then "               \
377 				"run scan_dev_for_boot; "                 \
378 			"fi; "                                            \
379 		"done\0"                                                  \
380 	\
381 	BOOT_TARGET_DEVICES(BOOTENV_DEV)                                  \
382 	\
383 	"distro_bootcmd=" BOOTENV_SET_SCSI_NEED_INIT                      \
384 		"for target in ${boot_targets}; do "                      \
385 			"run bootcmd_${target}; "                         \
386 		"done\0"
387 
388 #ifndef CONFIG_BOOTCOMMAND
389 #define CONFIG_BOOTCOMMAND "run distro_bootcmd"
390 #endif
391 
392 #endif  /* _CONFIG_CMD_DISTRO_BOOTCMD_H */
393