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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
16DECLARE_GLOBAL_DATA_PTR;
17
18static 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#ifdef CONFIG_SUPPORT_PASSING_ATAGS
36 "start",
37 "loados",
38#ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
39 "ramdisk",
40#endif
41 "cmdline",
42 "bdt",
43 "prep",
44#endif
45 NULL,
46 },
47 NULL
48};
49
50
51static int call_bootm(int argc, char *const argv[], const char *subcommand[])
52{
53 char *bootm_argv[5];
54
55 int i = 0;
56 int ret = 0;
57 int j;
58
59
60 bootm_argv[0] = "do_bootm";
61 switch (argc) {
62 case 3:
63 bootm_argv[4] = argv[2];
64 case 2:
65 bootm_argv[3] = argv[1];
66 case 1:
67 bootm_argv[2] = argv[0];
68 }
69
70
71
72
73
74
75
76 while (subcommand[i] != NULL) {
77 bootm_argv[1] = (char *)subcommand[i];
78 debug("args %d: %s %s ", argc, bootm_argv[0], bootm_argv[1]);
79 for (j = 0; j < argc; j++)
80 debug("%s ", bootm_argv[j + 2]);
81 debug("\n");
82
83 ret = do_bootm(find_cmd("do_bootm"), 0, argc+2,
84 bootm_argv);
85 debug("Subcommand retcode: %d\n", ret);
86 i++;
87 }
88
89 if (ret) {
90 printf("ERROR prep subcommand failed!\n");
91 return -1;
92 }
93
94 return 0;
95}
96
97static struct cmd_tbl cmd_spl_export_sub[] = {
98 U_BOOT_CMD_MKENT(fdt, 0, 1, (void *)SPL_EXPORT_FDT, "", ""),
99 U_BOOT_CMD_MKENT(atags, 0, 1, (void *)SPL_EXPORT_ATAGS, "", ""),
100};
101
102static int spl_export(struct cmd_tbl *cmdtp, int flag, int argc,
103 char *const argv[])
104{
105 const struct cmd_tbl *c;
106
107 if (argc < 2)
108 return cmd_usage(cmdtp);
109
110 c = find_cmd_tbl(argv[1], &cmd_spl_export_sub[0],
111 ARRAY_SIZE(cmd_spl_export_sub));
112 if ((c) && ((long)c->cmd <= SPL_EXPORT_LAST)) {
113 argc -= 2;
114 argv += 2;
115 if (call_bootm(argc, argv, subcmd_list[(long)c->cmd]))
116 return -1;
117 switch ((long)c->cmd) {
118#ifdef CONFIG_OF_LIBFDT
119 case SPL_EXPORT_FDT:
120 printf("Argument image is now in RAM: 0x%p\n",
121 (void *)images.ft_addr);
122 env_set_addr("fdtargsaddr", images.ft_addr);
123 env_set_hex("fdtargslen", fdt_totalsize(images.ft_addr));
124#ifdef CONFIG_CMD_SPL_WRITE_SIZE
125 if (fdt_totalsize(images.ft_addr) >
126 CONFIG_CMD_SPL_WRITE_SIZE)
127 puts("WARN: FDT size > CMD_SPL_WRITE_SIZE\n");
128#endif
129 break;
130#endif
131 case SPL_EXPORT_ATAGS:
132 printf("Argument image is now in RAM at: 0x%p\n",
133 (void *)gd->bd->bi_boot_params);
134 break;
135 }
136 } else {
137
138 return cmd_usage(cmdtp);
139 }
140
141 return 0;
142}
143
144static struct cmd_tbl cmd_spl_sub[] = {
145 U_BOOT_CMD_MKENT(export, 0, 1, (void *)SPL_EXPORT, "", ""),
146};
147
148static int do_spl(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
149{
150 const struct cmd_tbl *c;
151 int cmd;
152
153 if (argc < 2)
154 return cmd_usage(cmdtp);
155
156 c = find_cmd_tbl(argv[1], &cmd_spl_sub[0], ARRAY_SIZE(cmd_spl_sub));
157 if (c) {
158 cmd = (long)c->cmd;
159 switch (cmd) {
160 case SPL_EXPORT:
161 argc--;
162 argv++;
163 if (spl_export(cmdtp, flag, argc, argv))
164 printf("Subcommand failed\n");
165 break;
166 default:
167
168 return cmd_usage(cmdtp);
169 }
170 } else {
171
172 return cmd_usage(cmdtp);
173 }
174 return 0;
175}
176
177U_BOOT_CMD(
178 spl, 6 , 1, do_spl, "SPL configuration",
179 "export <img=atags|fdt> [kernel_addr] [initrd_addr] [fdt_addr]\n"
180 "\timg\t\t\"atags\" or \"fdt\"\n"
181 "\tkernel_addr\taddress where a kernel image is stored.\n"
182 "\t\t\tkernel is loaded as part of the boot process, but it is not started.\n"
183 "\tinitrd_addr\taddress of initial ramdisk\n"
184 "\t\t\tcan be set to \"-\" if fdt_addr without initrd_addr is used.\n"
185 "\tfdt_addr\tin case of fdt, the address of the device tree.\n"
186 );
187
