1 // SPDX-License-Identifier: BSD-2-Clause
3 * Copyright (c) 2001 William L. Pitts
18 #include <asm/cache.h>
20 #include <linux/linkage.h>
23 /* Allow ports to override the default behavior */
24 static unsigned long do_bootelf_exec(ulong (*entry)(int, char * const[]),
25 int argc, char *const argv[])
30 * pass address parameter as argv[0] (aka command name),
31 * and all remaining args
33 ret = entry(argc, argv);
38 /* Interpreter command to boot an arbitrary ELF image from memory */
39 int do_bootelf(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
41 unsigned long addr; /* Address of the ELF image */
42 unsigned long rc; /* Return value from user code */
46 /* Consume 'bootelf' */
50 if (argc >= 1 && (argv[0][0] == '-' && \
51 (argv[0][1] == 'p' || argv[0][1] == 's'))) {
56 /* Check for address. */
57 if (argc >= 1 && strict_strtoul(argv[0], 16, &addr) != -EINVAL) {
61 addr = image_load_addr;
63 if (!valid_elf_image(addr))
66 if (sload && sload[1] == 'p')
67 addr = load_elf_image_phdr(addr);
69 addr = load_elf_image_shdr(addr);
71 if (!env_get_autostart())
74 printf("## Starting application at 0x%08lx ...\n", addr);
78 * pass address parameter as argv[0] (aka command name),
79 * and all remaining args
81 rc = do_bootelf_exec((void *)addr, argc, argv);
85 printf("## Application terminated, rc = 0x%lx\n", rc);
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.
95 int do_bootvx(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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 */
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;
112 * Check the loadaddr variable.
113 * If we don't know where the image is then we're done.
116 addr = image_load_addr;
118 addr = hextoul(argv[1], NULL);
120 #if defined(CONFIG_CMD_NET)
122 * Check to see if we need to tftp the image ourselves
125 if ((argc == 2) && (strcmp(argv[1], "tftp") == 0)) {
126 if (net_loop(TFTPGET) <= 0)
128 printf("Automatic boot of VxWorks image at address 0x%08lx ...\n",
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
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);
144 puts("## Ethernet MAC address not copied to NV RAM\n");
149 * Get VxWorks's physical memory base address from environment,
150 * if we don't specify it in the environment, use a default one.
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);
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) +
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.
167 *(u32 *)(base + BOOT_IMAGE_SIZE_OFFSET) = 0;
170 * Prepare compatible framebuffer information block.
171 * The VESA mode has to be 32-bit RGBA.
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;
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.
192 tmp = env_get("bootaddr");
195 bootaddr = base + X86_BOOT_LINE_OFFSET;
197 printf("## VxWorks bootline address not specified\n");
203 bootaddr = hextoul(tmp, NULL);
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.
209 bootline = env_get("bootargs");
211 tmp = env_get("bootdev");
213 strcpy(build_buf, tmp);
216 printf("## VxWorks boot device not specified\n");
219 tmp = env_get("bootfile");
221 ptr += sprintf(build_buf + ptr, "host:%s ", tmp);
223 ptr += sprintf(build_buf + ptr, "host:vxWorks ");
226 * The following parameters are only needed if 'bootdev'
227 * is an ethernet device, otherwise they are optional.
229 tmp = env_get("ipaddr");
231 ptr += sprintf(build_buf + ptr, "e=%s", tmp);
232 tmp = env_get("netmask");
234 u32 mask = env_get_ip("netmask").s_addr;
235 ptr += sprintf(build_buf + ptr,
236 ":%08x ", ntohl(mask));
238 ptr += sprintf(build_buf + ptr, " ");
242 tmp = env_get("serverip");
244 ptr += sprintf(build_buf + ptr, "h=%s ", tmp);
246 tmp = env_get("gatewayip");
248 ptr += sprintf(build_buf + ptr, "g=%s ", tmp);
250 tmp = env_get("hostname");
252 ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);
254 tmp = env_get("othbootargs");
256 strcpy(build_buf + ptr, tmp);
260 bootline = build_buf;
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);
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
272 if (valid_elf_image(addr))
273 addr = load_elf_image_phdr(addr);
275 puts("## Not an ELF image, assuming binary\n");
277 printf("## Starting vxWorks at 0x%08lx ...\n", addr);
281 #if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
287 /* VxWorks on x86 uses stack to pass parameters */
288 ((asmlinkage void (*)(int))addr)(0);
290 ((void (*)(int))addr)(0);
293 puts("## vxWorks terminated\n");
299 bootelf, CONFIG_SYS_MAXARGS, 0, do_bootelf,
300 "Boot from an ELF image in memory",
301 "[-p|-s] [address]\n"
302 "\t- load ELF image at [address] via program headers (-p)\n"
303 "\t or via section headers (-s)"
307 bootvx, 2, 0, do_bootvx,
308 "Boot vxWorks from an ELF image",
309 " [address] - load address of vxWorks ELF image."