1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2011
4 * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
5 */
6
7 #include <common.h>
8 #include <command.h>
9 #include <cmd_spl.h>
10 #include <env.h>
11 #include <image.h>
12 #include <log.h>
13 #include <asm/global_data.h>
14 #include <linux/libfdt.h>
15
16 DECLARE_GLOBAL_DATA_PTR;
17
18 static const char **subcmd_list[] = {
19
20 [SPL_EXPORT_FDT] = (const char * []) {
21 #ifdef CONFIG_OF_LIBFDT
22 "start",
23 "loados",
24 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
25 "ramdisk",
26 #endif
27 "fdt",
28 "cmdline",
29 "bdt",
30 "prep",
31 #endif
32 NULL,
33 },
34 [SPL_EXPORT_ATAGS] = (const char * []) {
35 #if defined(CONFIG_SETUP_MEMORY_TAGS) || \
36 defined(CONFIG_CMDLINE_TAG) || \
37 defined(CONFIG_INITRD_TAG) || \
38 defined(CONFIG_SERIAL_TAG) || \
39 defined(CONFIG_REVISION_TAG)
40 "start",
41 "loados",
42 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
43 "ramdisk",
44 #endif
45 "cmdline",
46 "bdt",
47 "prep",
48 #endif
49 NULL,
50 },
51 NULL
52 };
53
54 /* Calls bootm with the parameters given */
call_bootm(int argc,char * const argv[],const char * subcommand[])55 static int call_bootm(int argc, char *const argv[], const char *subcommand[])
56 {
57 char *bootm_argv[5];
58
59 int i = 0;
60 int ret = 0;
61 int j;
62
63 /* create paramter array */
64 bootm_argv[0] = "do_bootm";
65 switch (argc) {
66 case 3:
67 bootm_argv[4] = argv[2]; /* fdt addr */
68 case 2:
69 bootm_argv[3] = argv[1]; /* initrd addr */
70 case 1:
71 bootm_argv[2] = argv[0]; /* kernel addr */
72 }
73
74
75 /*
76 * - do the work -
77 * exec subcommands of do_bootm to init the images
78 * data structure
79 */
80 while (subcommand[i] != NULL) {
81 bootm_argv[1] = (char *)subcommand[i];
82 debug("args %d: %s %s ", argc, bootm_argv[0], bootm_argv[1]);
83 for (j = 0; j < argc; j++)
84 debug("%s ", bootm_argv[j + 2]);
85 debug("\n");
86
87 ret = do_bootm(find_cmd("do_bootm"), 0, argc+2,
88 bootm_argv);
89 debug("Subcommand retcode: %d\n", ret);
90 i++;
91 }
92
93 if (ret) {
94 printf("ERROR prep subcommand failed!\n");
95 return -1;
96 }
97
98 return 0;
99 }
100
101 static struct cmd_tbl cmd_spl_export_sub[] = {
102 U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)SPL_EXPORT_FDT, "", ""),
103 U_BOOT_CMD_MKENT(atags, 0, 1, (void *)SPL_EXPORT_ATAGS, "", ""),
104 };
105
spl_export(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])106 static int spl_export(struct cmd_tbl *cmdtp, int flag, int argc,
107 char *const argv[])
108 {
109 const struct cmd_tbl *c;
110
111 if (argc < 2) /* no subcommand */
112 return cmd_usage(cmdtp);
113
114 c = find_cmd_tbl(argv[1], &cmd_spl_export_sub[0],
115 ARRAY_SIZE(cmd_spl_export_sub));
116 if ((c) && ((long)c->cmd <= SPL_EXPORT_LAST)) {
117 argc -= 2;
118 argv += 2;
119 if (call_bootm(argc, argv, subcmd_list[(long)c->cmd]))
120 return -1;
121 switch ((long)c->cmd) {
122 #ifdef CONFIG_OF_LIBFDT
123 case SPL_EXPORT_FDT:
124 printf("Argument image is now in RAM: 0x%p\n",
125 (void *)images.ft_addr);
126 env_set_addr("fdtargsaddr", images.ft_addr);
127 env_set_hex("fdtargslen", fdt_totalsize(images.ft_addr));
128 #ifdef CONFIG_CMD_SPL_WRITE_SIZE
129 if (fdt_totalsize(images.ft_addr) >
130 CONFIG_CMD_SPL_WRITE_SIZE)
131 puts("WARN: FDT size > CMD_SPL_WRITE_SIZE\n");
132 #endif
133 break;
134 #endif
135 case SPL_EXPORT_ATAGS:
136 printf("Argument image is now in RAM at: 0x%p\n",
137 (void *)gd->bd->bi_boot_params);
138 break;
139 }
140 } else {
141 /* Unrecognized command */
142 return cmd_usage(cmdtp);
143 }
144
145 return 0;
146 }
147
148 static struct cmd_tbl cmd_spl_sub[] = {
149 U_BOOT_CMD_MKENT(export, 0, 1, (void *)SPL_EXPORT, "", ""),
150 };
151
do_spl(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])152 static int do_spl(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
153 {
154 const struct cmd_tbl *c;
155 int cmd;
156
157 if (argc < 2) /* no subcommand */
158 return cmd_usage(cmdtp);
159
160 c = find_cmd_tbl(argv[1], &cmd_spl_sub[0], ARRAY_SIZE(cmd_spl_sub));
161 if (c) {
162 cmd = (long)c->cmd;
163 switch (cmd) {
164 case SPL_EXPORT:
165 argc--;
166 argv++;
167 if (spl_export(cmdtp, flag, argc, argv))
168 printf("Subcommand failed\n");
169 break;
170 default:
171 /* unrecognized command */
172 return cmd_usage(cmdtp);
173 }
174 } else {
175 /* Unrecognized command */
176 return cmd_usage(cmdtp);
177 }
178 return 0;
179 }
180
181 U_BOOT_CMD(
182 spl, 6 , 1, do_spl, "SPL configuration",
183 "export <img=atags|fdt> [kernel_addr] [initrd_addr] [fdt_addr]\n"
184 "\timg\t\t\"atags\" or \"fdt\"\n"
185 "\tkernel_addr\taddress where a kernel image is stored.\n"
186 "\t\t\tkernel is loaded as part of the boot process, but it is not started.\n"
187 "\tinitrd_addr\taddress of initial ramdisk\n"
188 "\t\t\tcan be set to \"-\" if fdt_addr without initrd_addr is used.\n"
189 "\tfdt_addr\tin case of fdt, the address of the device tree.\n"
190 );
191