blob: 0cfdc52b465a8637e7d46cbbc3fcd5d078fe307f [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Macpaul Lin0d1f4742011-10-11 22:33:19 +00002/*
3 * Copyright (C) 2011 Andes Technology Corporation
4 * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
5 * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
Macpaul Lin0d1f4742011-10-11 22:33:19 +00006 */
7
8#include <common.h>
9#include <command.h>
10#include <image.h>
11#include <u-boot/zlib.h>
12#include <asm/byteorder.h>
rickf1113c92017-05-18 14:37:53 +080013#include <asm/bootm.h>
Macpaul Lin0d1f4742011-10-11 22:33:19 +000014
15DECLARE_GLOBAL_DATA_PTR;
16
17#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
18 defined(CONFIG_CMDLINE_TAG) || \
19 defined(CONFIG_INITRD_TAG) || \
20 defined(CONFIG_SERIAL_TAG) || \
21 defined(CONFIG_REVISION_TAG)
22static void setup_start_tag(bd_t *bd);
23
24# ifdef CONFIG_SETUP_MEMORY_TAGS
25static void setup_memory_tags(bd_t *bd);
26# endif
27static void setup_commandline_tag(bd_t *bd, char *commandline);
28
29# ifdef CONFIG_INITRD_TAG
30static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end);
31# endif
32static void setup_end_tag(bd_t *bd);
33
34static struct tag *params;
35#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
36
37int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
38{
39 bd_t *bd = gd->bd;
40 char *s;
41 int machid = bd->bi_arch_number;
42 void (*theKernel)(int zero, int arch, uint params);
43
44#ifdef CONFIG_CMDLINE_TAG
Simon Glass64b723f2017-08-03 12:22:12 -060045 char *commandline = env_get("bootargs");
Macpaul Lin0d1f4742011-10-11 22:33:19 +000046#endif
47
Andreas Bießmannda233ce2013-07-02 13:57:44 +020048 /*
49 * allow the PREP bootm subcommand, it is required for bootm to work
50 */
51 if (flag & BOOTM_STATE_OS_PREP)
52 return 0;
53
Macpaul Lin0d1f4742011-10-11 22:33:19 +000054 if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
55 return 1;
56
57 theKernel = (void (*)(int, int, uint))images->ep;
58
Simon Glass64b723f2017-08-03 12:22:12 -060059 s = env_get("machid");
Macpaul Lin0d1f4742011-10-11 22:33:19 +000060 if (s) {
61 machid = simple_strtoul(s, NULL, 16);
62 printf("Using machid 0x%x from environment\n", machid);
63 }
64
Simon Glass0169e6b2012-02-13 13:51:18 +000065 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
Macpaul Lin0d1f4742011-10-11 22:33:19 +000066
67 debug("## Transferring control to Linux (at address %08lx) ...\n",
68 (ulong)theKernel);
69
rickf1113c92017-05-18 14:37:53 +080070 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
71#ifdef CONFIG_OF_LIBFDT
72 debug("using: FDT\n");
73 if (image_setup_linux(images)) {
74 printf("FDT creation failed! hanging...");
75 hang();
76 }
77#endif
78 } else if (BOOTM_ENABLE_TAGS) {
Macpaul Lin0d1f4742011-10-11 22:33:19 +000079#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
80 defined(CONFIG_CMDLINE_TAG) || \
81 defined(CONFIG_INITRD_TAG) || \
82 defined(CONFIG_SERIAL_TAG) || \
83 defined(CONFIG_REVISION_TAG)
84 setup_start_tag(bd);
85#ifdef CONFIG_SERIAL_TAG
86 setup_serial_tag(&params);
87#endif
88#ifdef CONFIG_REVISION_TAG
89 setup_revision_tag(&params);
90#endif
91#ifdef CONFIG_SETUP_MEMORY_TAGS
92 setup_memory_tags(bd);
93#endif
94#ifdef CONFIG_CMDLINE_TAG
95 setup_commandline_tag(bd, commandline);
96#endif
97#ifdef CONFIG_INITRD_TAG
98 if (images->rd_start && images->rd_end)
99 setup_initrd_tag(bd, images->rd_start, images->rd_end);
100#endif
101 setup_end_tag(bd);
102#endif
103
104 /* we assume that the kernel is in place */
105 printf("\nStarting kernel ...\n\n");
106
107#ifdef CONFIG_USB_DEVICE
108 {
109 extern void udc_disconnect(void);
110 udc_disconnect();
111 }
112#endif
rickf1113c92017-05-18 14:37:53 +0800113 }
Macpaul Lin0d1f4742011-10-11 22:33:19 +0000114 cleanup_before_linux();
rickf1113c92017-05-18 14:37:53 +0800115 if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
116 theKernel(0, machid, (unsigned long)images->ft_addr);
117 else
118 theKernel(0, machid, bd->bi_boot_params);
Macpaul Lin0d1f4742011-10-11 22:33:19 +0000119 /* does not return */
120
121 return 1;
122}
123
Macpaul Lin0d1f4742011-10-11 22:33:19 +0000124#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
125 defined(CONFIG_CMDLINE_TAG) || \
126 defined(CONFIG_INITRD_TAG) || \
127 defined(CONFIG_SERIAL_TAG) || \
128 defined(CONFIG_REVISION_TAG)
129static void setup_start_tag(bd_t *bd)
130{
131 params = (struct tag *)bd->bi_boot_params;
132
133 params->hdr.tag = ATAG_CORE;
134 params->hdr.size = tag_size(tag_core);
135
136 params->u.core.flags = 0;
137 params->u.core.pagesize = 0;
138 params->u.core.rootdev = 0;
139
140 params = tag_next(params);
141}
142
Macpaul Lin0d1f4742011-10-11 22:33:19 +0000143#ifdef CONFIG_SETUP_MEMORY_TAGS
144static void setup_memory_tags(bd_t *bd)
145{
146 int i;
147
148 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
149 params->hdr.tag = ATAG_MEM;
150 params->hdr.size = tag_size(tag_mem32);
151
152 params->u.mem.start = bd->bi_dram[i].start;
153 params->u.mem.size = bd->bi_dram[i].size;
154
155 params = tag_next(params);
156 }
157}
158#endif /* CONFIG_SETUP_MEMORY_TAGS */
159
Macpaul Lin0d1f4742011-10-11 22:33:19 +0000160static void setup_commandline_tag(bd_t *bd, char *commandline)
161{
162 char *p;
163
164 if (!commandline)
165 return;
166
167 /* eat leading white space */
168 for (p = commandline; *p == ' '; p++)
169 ;
170
171 /* skip non-existent command lines so the kernel will still
172 * use its default command line.
173 */
174 if (*p == '\0')
175 return;
176
177 params->hdr.tag = ATAG_CMDLINE;
178 params->hdr.size =
179 (sizeof(struct tag_header) + strlen(p) + 1 + 4) >> 2;
180
181 strcpy(params->u.cmdline.cmdline, p)
182 ;
183
184 params = tag_next(params);
185}
186
Macpaul Lin0d1f4742011-10-11 22:33:19 +0000187#ifdef CONFIG_INITRD_TAG
188static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
189{
190 /* an ATAG_INITRD node tells the kernel where the compressed
191 * ramdisk can be found. ATAG_RDIMG is a better name, actually.
192 */
193 params->hdr.tag = ATAG_INITRD2;
194 params->hdr.size = tag_size(tag_initrd);
195
196 params->u.initrd.start = initrd_start;
197 params->u.initrd.size = initrd_end - initrd_start;
198
199 params = tag_next(params);
200}
201#endif /* CONFIG_INITRD_TAG */
202
203#ifdef CONFIG_SERIAL_TAG
204void setup_serial_tag(struct tag **tmp)
205{
206 struct tag *params = *tmp;
207 struct tag_serialnr serialnr;
208 void get_board_serial(struct tag_serialnr *serialnr);
209
210 get_board_serial(&serialnr);
211 params->hdr.tag = ATAG_SERIAL;
212 params->hdr.size = tag_size(tag_serialnr);
213 params->u.serialnr.low = serialnr.low;
214 params->u.serialnr.high = serialnr.high;
215 params = tag_next(params);
216 *tmp = params;
217}
218#endif
219
220#ifdef CONFIG_REVISION_TAG
221void setup_revision_tag(struct tag **in_params)
222{
223 u32 rev = 0;
224 u32 get_board_rev(void);
225
226 rev = get_board_rev();
227 params->hdr.tag = ATAG_REVISION;
228 params->hdr.size = tag_size(tag_revision);
229 params->u.revision.rev = rev;
230 params = tag_next(params);
231}
232#endif /* CONFIG_REVISION_TAG */
233
Macpaul Lin0d1f4742011-10-11 22:33:19 +0000234static void setup_end_tag(bd_t *bd)
235{
236 params->hdr.tag = ATAG_NONE;
237 params->hdr.size = 0;
238}
239
240#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */