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463d47f6 ML |
1 | /* |
2 | * Copyright (C) 2011 Andes Technology Corporation | |
3 | * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> | |
4 | * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> | |
5 | * | |
1a459660 | 6 | * SPDX-License-Identifier: GPL-2.0+ |
463d47f6 ML |
7 | */ |
8 | ||
9 | #include <common.h> | |
10 | #include <command.h> | |
11 | #include <image.h> | |
12 | #include <u-boot/zlib.h> | |
13 | #include <asm/byteorder.h> | |
b841b6e9 | 14 | #include <asm/bootm.h> |
463d47f6 ML |
15 | |
16 | DECLARE_GLOBAL_DATA_PTR; | |
17 | ||
18 | #if defined(CONFIG_SETUP_MEMORY_TAGS) || \ | |
19 | defined(CONFIG_CMDLINE_TAG) || \ | |
20 | defined(CONFIG_INITRD_TAG) || \ | |
21 | defined(CONFIG_SERIAL_TAG) || \ | |
22 | defined(CONFIG_REVISION_TAG) | |
23 | static void setup_start_tag(bd_t *bd); | |
24 | ||
25 | # ifdef CONFIG_SETUP_MEMORY_TAGS | |
26 | static void setup_memory_tags(bd_t *bd); | |
27 | # endif | |
28 | static void setup_commandline_tag(bd_t *bd, char *commandline); | |
29 | ||
30 | # ifdef CONFIG_INITRD_TAG | |
31 | static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end); | |
32 | # endif | |
33 | static void setup_end_tag(bd_t *bd); | |
34 | ||
35 | static struct tag *params; | |
36 | #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ | |
37 | ||
38 | int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) | |
39 | { | |
40 | bd_t *bd = gd->bd; | |
41 | char *s; | |
42 | int machid = bd->bi_arch_number; | |
43 | void (*theKernel)(int zero, int arch, uint params); | |
44 | ||
45 | #ifdef CONFIG_CMDLINE_TAG | |
00caae6d | 46 | char *commandline = env_get("bootargs"); |
463d47f6 ML |
47 | #endif |
48 | ||
2cb0e55a AB |
49 | /* |
50 | * allow the PREP bootm subcommand, it is required for bootm to work | |
51 | */ | |
52 | if (flag & BOOTM_STATE_OS_PREP) | |
53 | return 0; | |
54 | ||
463d47f6 ML |
55 | if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) |
56 | return 1; | |
57 | ||
58 | theKernel = (void (*)(int, int, uint))images->ep; | |
59 | ||
00caae6d | 60 | s = env_get("machid"); |
463d47f6 ML |
61 | if (s) { |
62 | machid = simple_strtoul(s, NULL, 16); | |
63 | printf("Using machid 0x%x from environment\n", machid); | |
64 | } | |
65 | ||
770605e4 | 66 | bootstage_mark(BOOTSTAGE_ID_RUN_OS); |
463d47f6 ML |
67 | |
68 | debug("## Transferring control to Linux (at address %08lx) ...\n", | |
69 | (ulong)theKernel); | |
70 | ||
b841b6e9 | 71 | if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) { |
72 | #ifdef CONFIG_OF_LIBFDT | |
73 | debug("using: FDT\n"); | |
74 | if (image_setup_linux(images)) { | |
75 | printf("FDT creation failed! hanging..."); | |
76 | hang(); | |
77 | } | |
78 | #endif | |
79 | } else if (BOOTM_ENABLE_TAGS) { | |
463d47f6 ML |
80 | #if defined(CONFIG_SETUP_MEMORY_TAGS) || \ |
81 | defined(CONFIG_CMDLINE_TAG) || \ | |
82 | defined(CONFIG_INITRD_TAG) || \ | |
83 | defined(CONFIG_SERIAL_TAG) || \ | |
84 | defined(CONFIG_REVISION_TAG) | |
85 | setup_start_tag(bd); | |
86 | #ifdef CONFIG_SERIAL_TAG | |
87 | setup_serial_tag(¶ms); | |
88 | #endif | |
89 | #ifdef CONFIG_REVISION_TAG | |
90 | setup_revision_tag(¶ms); | |
91 | #endif | |
92 | #ifdef CONFIG_SETUP_MEMORY_TAGS | |
93 | setup_memory_tags(bd); | |
94 | #endif | |
95 | #ifdef CONFIG_CMDLINE_TAG | |
96 | setup_commandline_tag(bd, commandline); | |
97 | #endif | |
98 | #ifdef CONFIG_INITRD_TAG | |
99 | if (images->rd_start && images->rd_end) | |
100 | setup_initrd_tag(bd, images->rd_start, images->rd_end); | |
101 | #endif | |
102 | setup_end_tag(bd); | |
103 | #endif | |
104 | ||
105 | /* we assume that the kernel is in place */ | |
106 | printf("\nStarting kernel ...\n\n"); | |
107 | ||
108 | #ifdef CONFIG_USB_DEVICE | |
109 | { | |
110 | extern void udc_disconnect(void); | |
111 | udc_disconnect(); | |
112 | } | |
113 | #endif | |
b841b6e9 | 114 | } |
463d47f6 | 115 | cleanup_before_linux(); |
b841b6e9 | 116 | if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) |
117 | theKernel(0, machid, (unsigned long)images->ft_addr); | |
118 | else | |
119 | theKernel(0, machid, bd->bi_boot_params); | |
463d47f6 ML |
120 | /* does not return */ |
121 | ||
122 | return 1; | |
123 | } | |
124 | ||
463d47f6 ML |
125 | #if defined(CONFIG_SETUP_MEMORY_TAGS) || \ |
126 | defined(CONFIG_CMDLINE_TAG) || \ | |
127 | defined(CONFIG_INITRD_TAG) || \ | |
128 | defined(CONFIG_SERIAL_TAG) || \ | |
129 | defined(CONFIG_REVISION_TAG) | |
130 | static void setup_start_tag(bd_t *bd) | |
131 | { | |
132 | params = (struct tag *)bd->bi_boot_params; | |
133 | ||
134 | params->hdr.tag = ATAG_CORE; | |
135 | params->hdr.size = tag_size(tag_core); | |
136 | ||
137 | params->u.core.flags = 0; | |
138 | params->u.core.pagesize = 0; | |
139 | params->u.core.rootdev = 0; | |
140 | ||
141 | params = tag_next(params); | |
142 | } | |
143 | ||
463d47f6 ML |
144 | #ifdef CONFIG_SETUP_MEMORY_TAGS |
145 | static void setup_memory_tags(bd_t *bd) | |
146 | { | |
147 | int i; | |
148 | ||
149 | for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { | |
150 | params->hdr.tag = ATAG_MEM; | |
151 | params->hdr.size = tag_size(tag_mem32); | |
152 | ||
153 | params->u.mem.start = bd->bi_dram[i].start; | |
154 | params->u.mem.size = bd->bi_dram[i].size; | |
155 | ||
156 | params = tag_next(params); | |
157 | } | |
158 | } | |
159 | #endif /* CONFIG_SETUP_MEMORY_TAGS */ | |
160 | ||
463d47f6 ML |
161 | static void setup_commandline_tag(bd_t *bd, char *commandline) |
162 | { | |
163 | char *p; | |
164 | ||
165 | if (!commandline) | |
166 | return; | |
167 | ||
168 | /* eat leading white space */ | |
169 | for (p = commandline; *p == ' '; p++) | |
170 | ; | |
171 | ||
172 | /* skip non-existent command lines so the kernel will still | |
173 | * use its default command line. | |
174 | */ | |
175 | if (*p == '\0') | |
176 | return; | |
177 | ||
178 | params->hdr.tag = ATAG_CMDLINE; | |
179 | params->hdr.size = | |
180 | (sizeof(struct tag_header) + strlen(p) + 1 + 4) >> 2; | |
181 | ||
182 | strcpy(params->u.cmdline.cmdline, p) | |
183 | ; | |
184 | ||
185 | params = tag_next(params); | |
186 | } | |
187 | ||
463d47f6 ML |
188 | #ifdef CONFIG_INITRD_TAG |
189 | static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end) | |
190 | { | |
191 | /* an ATAG_INITRD node tells the kernel where the compressed | |
192 | * ramdisk can be found. ATAG_RDIMG is a better name, actually. | |
193 | */ | |
194 | params->hdr.tag = ATAG_INITRD2; | |
195 | params->hdr.size = tag_size(tag_initrd); | |
196 | ||
197 | params->u.initrd.start = initrd_start; | |
198 | params->u.initrd.size = initrd_end - initrd_start; | |
199 | ||
200 | params = tag_next(params); | |
201 | } | |
202 | #endif /* CONFIG_INITRD_TAG */ | |
203 | ||
204 | #ifdef CONFIG_SERIAL_TAG | |
205 | void setup_serial_tag(struct tag **tmp) | |
206 | { | |
207 | struct tag *params = *tmp; | |
208 | struct tag_serialnr serialnr; | |
209 | void get_board_serial(struct tag_serialnr *serialnr); | |
210 | ||
211 | get_board_serial(&serialnr); | |
212 | params->hdr.tag = ATAG_SERIAL; | |
213 | params->hdr.size = tag_size(tag_serialnr); | |
214 | params->u.serialnr.low = serialnr.low; | |
215 | params->u.serialnr.high = serialnr.high; | |
216 | params = tag_next(params); | |
217 | *tmp = params; | |
218 | } | |
219 | #endif | |
220 | ||
221 | #ifdef CONFIG_REVISION_TAG | |
222 | void setup_revision_tag(struct tag **in_params) | |
223 | { | |
224 | u32 rev = 0; | |
225 | u32 get_board_rev(void); | |
226 | ||
227 | rev = get_board_rev(); | |
228 | params->hdr.tag = ATAG_REVISION; | |
229 | params->hdr.size = tag_size(tag_revision); | |
230 | params->u.revision.rev = rev; | |
231 | params = tag_next(params); | |
232 | } | |
233 | #endif /* CONFIG_REVISION_TAG */ | |
234 | ||
463d47f6 ML |
235 | static void setup_end_tag(bd_t *bd) |
236 | { | |
237 | params->hdr.tag = ATAG_NONE; | |
238 | params->hdr.size = 0; | |
239 | } | |
240 | ||
241 | #endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */ |