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);
77 * pass address parameter as argv[0] (aka command name),
78 * and all remaining args
80 rc = do_bootelf_exec((void *)addr, argc, argv);
84 printf("## Application terminated, rc = 0x%lx\n", rc);
90 * Interpreter command to boot VxWorks from a memory image. The image can
91 * be either an ELF image or a raw binary. Will attempt to setup the
92 * bootline and other parameters correctly.
94 int do_bootvx(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
96 unsigned long addr; /* Address of image */
97 unsigned long bootaddr = 0; /* Address to put the bootline */
98 char *bootline; /* Text of the bootline */
99 char *tmp; /* Temporary char pointer */
100 char build_buf[128]; /* Buffer for building the bootline */
104 struct e820_info *info;
105 struct e820_entry *data;
106 struct efi_gop_info *gop;
107 struct vesa_mode_info *vesa = &mode_info.vesa;
111 * Check the loadaddr variable.
112 * If we don't know where the image is then we're done.
115 addr = image_load_addr;
117 addr = hextoul(argv[1], NULL);
119 #if defined(CONFIG_CMD_NET)
121 * Check to see if we need to tftp the image ourselves
124 if ((argc == 2) && (strcmp(argv[1], "tftp") == 0)) {
125 if (net_loop(TFTPGET) <= 0)
127 printf("Automatic boot of VxWorks image at address 0x%08lx ...\n",
133 * This should equate to
134 * NV_RAM_ADRS + NV_BOOT_OFFSET + NV_ENET_OFFSET
135 * from the VxWorks BSP header files.
136 * This will vary from board to board
138 #if defined(CONFIG_SYS_VXWORKS_MAC_PTR)
139 tmp = (char *)CONFIG_SYS_VXWORKS_MAC_PTR;
140 eth_env_get_enetaddr("ethaddr", (uchar *)build_buf);
141 memcpy(tmp, build_buf, 6);
143 puts("## Ethernet MAC address not copied to NV RAM\n");
148 * Get VxWorks's physical memory base address from environment,
149 * if we don't specify it in the environment, use a default one.
151 base = env_get_hex("vx_phys_mem_base", VXWORKS_PHYS_MEM_BASE);
152 data = (struct e820_entry *)(base + E820_DATA_OFFSET);
153 info = (struct e820_info *)(base + E820_INFO_OFFSET);
155 memset(info, 0, sizeof(struct e820_info));
156 info->sign = E820_SIGNATURE;
157 info->entries = install_e820_map(E820MAX, data);
158 info->addr = (info->entries - 1) * sizeof(struct e820_entry) +
162 * Explicitly clear the bootloader image size otherwise if memory
163 * at this offset happens to contain some garbage data, the final
164 * available memory size for the kernel is insane.
166 *(u32 *)(base + BOOT_IMAGE_SIZE_OFFSET) = 0;
169 * Prepare compatible framebuffer information block.
170 * The VESA mode has to be 32-bit RGBA.
172 if (vesa->x_resolution && vesa->y_resolution) {
173 gop = (struct efi_gop_info *)(base + EFI_GOP_INFO_OFFSET);
174 gop->magic = EFI_GOP_INFO_MAGIC;
175 gop->info.version = 0;
176 gop->info.width = vesa->x_resolution;
177 gop->info.height = vesa->y_resolution;
178 gop->info.pixel_format = EFI_GOT_RGBA8;
179 gop->info.pixels_per_scanline = vesa->bytes_per_scanline / 4;
180 gop->fb_base = vesa->phys_base_ptr;
181 gop->fb_size = vesa->bytes_per_scanline * vesa->y_resolution;
186 * Use bootaddr to find the location in memory that VxWorks
187 * will look for the bootline string. The default value is
188 * (LOCAL_MEM_LOCAL_ADRS + BOOT_LINE_OFFSET) as defined by
189 * VxWorks BSP. For example, on PowerPC it defaults to 0x4200.
191 tmp = env_get("bootaddr");
194 bootaddr = base + X86_BOOT_LINE_OFFSET;
196 printf("## VxWorks bootline address not specified\n");
202 bootaddr = hextoul(tmp, NULL);
205 * Check to see if the bootline is defined in the 'bootargs' parameter.
206 * If it is not defined, we may be able to construct the info.
208 bootline = env_get("bootargs");
210 tmp = env_get("bootdev");
212 strcpy(build_buf, tmp);
215 printf("## VxWorks boot device not specified\n");
218 tmp = env_get("bootfile");
220 ptr += sprintf(build_buf + ptr, "host:%s ", tmp);
222 ptr += sprintf(build_buf + ptr, "host:vxWorks ");
225 * The following parameters are only needed if 'bootdev'
226 * is an ethernet device, otherwise they are optional.
228 tmp = env_get("ipaddr");
230 ptr += sprintf(build_buf + ptr, "e=%s", tmp);
231 tmp = env_get("netmask");
233 u32 mask = env_get_ip("netmask").s_addr;
234 ptr += sprintf(build_buf + ptr,
235 ":%08x ", ntohl(mask));
237 ptr += sprintf(build_buf + ptr, " ");
241 tmp = env_get("serverip");
243 ptr += sprintf(build_buf + ptr, "h=%s ", tmp);
245 tmp = env_get("gatewayip");
247 ptr += sprintf(build_buf + ptr, "g=%s ", tmp);
249 tmp = env_get("hostname");
251 ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);
253 tmp = env_get("othbootargs");
255 strcpy(build_buf + ptr, tmp);
259 bootline = build_buf;
262 memcpy((void *)bootaddr, bootline, max(strlen(bootline), (size_t)255));
263 flush_cache(bootaddr, max(strlen(bootline), (size_t)255));
264 printf("## Using bootline (@ 0x%lx): %s\n", bootaddr, (char *)bootaddr);
267 * If the data at the load address is an elf image, then
268 * treat it like an elf image. Otherwise, assume that it is a
271 if (valid_elf_image(addr))
272 addr = load_elf_image_phdr(addr);
274 puts("## Not an ELF image, assuming binary\n");
276 printf("## Starting vxWorks at 0x%08lx ...\n", addr);
279 #if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
285 /* VxWorks on x86 uses stack to pass parameters */
286 ((asmlinkage void (*)(int))addr)(0);
288 ((void (*)(int))addr)(0);
291 puts("## vxWorks terminated\n");
297 bootelf, CONFIG_SYS_MAXARGS, 0, do_bootelf,
298 "Boot from an ELF image in memory",
299 "[-p|-s] [address]\n"
300 "\t- load ELF image at [address] via program headers (-p)\n"
301 "\t or via section headers (-s)"
305 bootvx, 2, 0, do_bootvx,
306 "Boot vxWorks from an ELF image",
307 " [address] - load address of vxWorks ELF image."