1 // SPDX-License-Identifier: BSD-2-Clause
2 /*
3 * Copyright (c) 2001 William L. Pitts
4 * All rights reserved.
5 */
6
7 #include <common.h>
8 #include <command.h>
9 #include <cpu_func.h>
10 #include <elf.h>
11 #include <env.h>
12 #include <image.h>
13 #include <log.h>
14 #include <net.h>
15 #include <vxworks.h>
16 #ifdef CONFIG_X86
17 #include <vbe.h>
18 #include <asm/cache.h>
19 #include <asm/e820.h>
20 #include <linux/linkage.h>
21 #endif
22
23 /* Allow ports to override the default behavior */
do_bootelf_exec(ulong (* entry)(int,char * const[]),int argc,char * const argv[])24 static unsigned long do_bootelf_exec(ulong (*entry)(int, char * const[]),
25 int argc, char *const argv[])
26 {
27 unsigned long ret;
28
29 /*
30 * pass address parameter as argv[0] (aka command name),
31 * and all remaining args
32 */
33 ret = entry(argc, argv);
34
35 return ret;
36 }
37
38 /* Interpreter command to boot an arbitrary ELF image from memory */
do_bootelf(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])39 int do_bootelf(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
40 {
41 unsigned long addr; /* Address of the ELF image */
42 unsigned long rc; /* Return value from user code */
43 char *sload = NULL;
44 const char *ep = env_get("autostart");
45 int rcode = 0;
46
47 /* Consume 'bootelf' */
48 argc--; argv++;
49
50 /* Check for flag. */
51 if (argc >= 1 && (argv[0][0] == '-' && \
52 (argv[0][1] == 'p' || argv[0][1] == 's'))) {
53 sload = argv[0];
54 /* Consume flag. */
55 argc--; argv++;
56 }
57 /* Check for address. */
58 if (argc >= 1 && strict_strtoul(argv[0], 16, &addr) != -EINVAL) {
59 /* Consume address */
60 argc--; argv++;
61 } else
62 addr = image_load_addr;
63
64 if (!valid_elf_image(addr))
65 return 1;
66
67 if (sload && sload[1] == 'p')
68 addr = load_elf_image_phdr(addr);
69 else
70 addr = load_elf_image_shdr(addr);
71
72 if (ep && !strcmp(ep, "no"))
73 return rcode;
74
75 printf("## Starting application at 0x%08lx ...\n", addr);
76
77 /*
78 * pass address parameter as argv[0] (aka command name),
79 * and all remaining args
80 */
81 rc = do_bootelf_exec((void *)addr, argc, argv);
82 if (rc != 0)
83 rcode = 1;
84
85 printf("## Application terminated, rc = 0x%lx\n", rc);
86
87 return rcode;
88 }
89
90 /*
91 * Interpreter command to boot VxWorks from a memory image. The image can
92 * be either an ELF image or a raw binary. Will attempt to setup the
93 * bootline and other parameters correctly.
94 */
do_bootvx(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])95 int do_bootvx(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
96 {
97 unsigned long addr; /* Address of image */
98 unsigned long bootaddr = 0; /* Address to put the bootline */
99 char *bootline; /* Text of the bootline */
100 char *tmp; /* Temporary char pointer */
101 char build_buf[128]; /* Buffer for building the bootline */
102 int ptr = 0;
103 #ifdef CONFIG_X86
104 ulong base;
105 struct e820_info *info;
106 struct e820_entry *data;
107 struct efi_gop_info *gop;
108 struct vesa_mode_info *vesa = &mode_info.vesa;
109 #endif
110
111 /*
112 * Check the loadaddr variable.
113 * If we don't know where the image is then we're done.
114 */
115 if (argc < 2)
116 addr = image_load_addr;
117 else
118 addr = simple_strtoul(argv[1], NULL, 16);
119
120 #if defined(CONFIG_CMD_NET)
121 /*
122 * Check to see if we need to tftp the image ourselves
123 * before starting
124 */
125 if ((argc == 2) && (strcmp(argv[1], "tftp") == 0)) {
126 if (net_loop(TFTPGET) <= 0)
127 return 1;
128 printf("Automatic boot of VxWorks image at address 0x%08lx ...\n",
129 addr);
130 }
131 #endif
132
133 /*
134 * This should equate to
135 * NV_RAM_ADRS + NV_BOOT_OFFSET + NV_ENET_OFFSET
136 * from the VxWorks BSP header files.
137 * This will vary from board to board
138 */
139 #if defined(CONFIG_SYS_VXWORKS_MAC_PTR)
140 tmp = (char *)CONFIG_SYS_VXWORKS_MAC_PTR;
141 eth_env_get_enetaddr("ethaddr", (uchar *)build_buf);
142 memcpy(tmp, build_buf, 6);
143 #else
144 puts("## Ethernet MAC address not copied to NV RAM\n");
145 #endif
146
147 #ifdef CONFIG_X86
148 /*
149 * Get VxWorks's physical memory base address from environment,
150 * if we don't specify it in the environment, use a default one.
151 */
152 base = env_get_hex("vx_phys_mem_base", VXWORKS_PHYS_MEM_BASE);
153 data = (struct e820_entry *)(base + E820_DATA_OFFSET);
154 info = (struct e820_info *)(base + E820_INFO_OFFSET);
155
156 memset(info, 0, sizeof(struct e820_info));
157 info->sign = E820_SIGNATURE;
158 info->entries = install_e820_map(E820MAX, data);
159 info->addr = (info->entries - 1) * sizeof(struct e820_entry) +
160 E820_DATA_OFFSET;
161
162 /*
163 * Explicitly clear the bootloader image size otherwise if memory
164 * at this offset happens to contain some garbage data, the final
165 * available memory size for the kernel is insane.
166 */
167 *(u32 *)(base + BOOT_IMAGE_SIZE_OFFSET) = 0;
168
169 /*
170 * Prepare compatible framebuffer information block.
171 * The VESA mode has to be 32-bit RGBA.
172 */
173 if (vesa->x_resolution && vesa->y_resolution) {
174 gop = (struct efi_gop_info *)(base + EFI_GOP_INFO_OFFSET);
175 gop->magic = EFI_GOP_INFO_MAGIC;
176 gop->info.version = 0;
177 gop->info.width = vesa->x_resolution;
178 gop->info.height = vesa->y_resolution;
179 gop->info.pixel_format = EFI_GOT_RGBA8;
180 gop->info.pixels_per_scanline = vesa->bytes_per_scanline / 4;
181 gop->fb_base = vesa->phys_base_ptr;
182 gop->fb_size = vesa->bytes_per_scanline * vesa->y_resolution;
183 }
184 #endif
185
186 /*
187 * Use bootaddr to find the location in memory that VxWorks
188 * will look for the bootline string. The default value is
189 * (LOCAL_MEM_LOCAL_ADRS + BOOT_LINE_OFFSET) as defined by
190 * VxWorks BSP. For example, on PowerPC it defaults to 0x4200.
191 */
192 tmp = env_get("bootaddr");
193 if (!tmp) {
194 #ifdef CONFIG_X86
195 bootaddr = base + X86_BOOT_LINE_OFFSET;
196 #else
197 printf("## VxWorks bootline address not specified\n");
198 return 1;
199 #endif
200 }
201
202 if (!bootaddr)
203 bootaddr = simple_strtoul(tmp, NULL, 16);
204
205 /*
206 * Check to see if the bootline is defined in the 'bootargs' parameter.
207 * If it is not defined, we may be able to construct the info.
208 */
209 bootline = env_get("bootargs");
210 if (!bootline) {
211 tmp = env_get("bootdev");
212 if (tmp) {
213 strcpy(build_buf, tmp);
214 ptr = strlen(tmp);
215 } else {
216 printf("## VxWorks boot device not specified\n");
217 }
218
219 tmp = env_get("bootfile");
220 if (tmp)
221 ptr += sprintf(build_buf + ptr, "host:%s ", tmp);
222 else
223 ptr += sprintf(build_buf + ptr, "host:vxWorks ");
224
225 /*
226 * The following parameters are only needed if 'bootdev'
227 * is an ethernet device, otherwise they are optional.
228 */
229 tmp = env_get("ipaddr");
230 if (tmp) {
231 ptr += sprintf(build_buf + ptr, "e=%s", tmp);
232 tmp = env_get("netmask");
233 if (tmp) {
234 u32 mask = env_get_ip("netmask").s_addr;
235 ptr += sprintf(build_buf + ptr,
236 ":%08x ", ntohl(mask));
237 } else {
238 ptr += sprintf(build_buf + ptr, " ");
239 }
240 }
241
242 tmp = env_get("serverip");
243 if (tmp)
244 ptr += sprintf(build_buf + ptr, "h=%s ", tmp);
245
246 tmp = env_get("gatewayip");
247 if (tmp)
248 ptr += sprintf(build_buf + ptr, "g=%s ", tmp);
249
250 tmp = env_get("hostname");
251 if (tmp)
252 ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);
253
254 tmp = env_get("othbootargs");
255 if (tmp) {
256 strcpy(build_buf + ptr, tmp);
257 ptr += strlen(tmp);
258 }
259
260 bootline = build_buf;
261 }
262
263 memcpy((void *)bootaddr, bootline, max(strlen(bootline), (size_t)255));
264 flush_cache(bootaddr, max(strlen(bootline), (size_t)255));
265 printf("## Using bootline (@ 0x%lx): %s\n", bootaddr, (char *)bootaddr);
266
267 /*
268 * If the data at the load address is an elf image, then
269 * treat it like an elf image. Otherwise, assume that it is a
270 * binary image.
271 */
272 if (valid_elf_image(addr))
273 addr = load_elf_image_phdr(addr);
274 else
275 puts("## Not an ELF image, assuming binary\n");
276
277 printf("## Starting vxWorks at 0x%08lx ...\n", addr);
278
279 dcache_disable();
280 #if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
281 armv8_setup_psci();
282 smp_kick_all_cpus();
283 #endif
284
285 #ifdef CONFIG_X86
286 /* VxWorks on x86 uses stack to pass parameters */
287 ((asmlinkage void (*)(int))addr)(0);
288 #else
289 ((void (*)(int))addr)(0);
290 #endif
291
292 puts("## vxWorks terminated\n");
293
294 return 1;
295 }
296
297 U_BOOT_CMD(
298 bootelf, CONFIG_SYS_MAXARGS, 0, do_bootelf,
299 "Boot from an ELF image in memory",
300 "[-p|-s] [address]\n"
301 "\t- load ELF image at [address] via program headers (-p)\n"
302 "\t or via section headers (-s)"
303 );
304
305 U_BOOT_CMD(
306 bootvx, 2, 0, do_bootvx,
307 "Boot vxWorks from an ELF image",
308 " [address] - load address of vxWorks ELF image."
309 );
310