mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-19 00:18:51 +09:00
310 lines
7.8 KiB
C
310 lines
7.8 KiB
C
// SPDX-License-Identifier: BSD-2-Clause
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/*
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* Copyright (c) 2001 William L. Pitts
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* All rights reserved.
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*/
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#include <common.h>
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#include <command.h>
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#include <cpu_func.h>
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#include <elf.h>
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#include <env.h>
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#include <image.h>
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#include <log.h>
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#include <net.h>
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#include <vxworks.h>
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#ifdef CONFIG_X86
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#include <vbe.h>
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#include <asm/cache.h>
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#include <asm/e820.h>
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#include <linux/linkage.h>
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#endif
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/* Allow ports to override the default behavior */
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static unsigned long do_bootelf_exec(ulong (*entry)(int, char * const[]),
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int argc, char *const argv[])
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{
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unsigned long ret;
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/*
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* pass address parameter as argv[0] (aka command name),
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* and all remaining args
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*/
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ret = entry(argc, argv);
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return ret;
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}
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/* Interpreter command to boot an arbitrary ELF image from memory */
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int do_bootelf(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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unsigned long addr; /* Address of the ELF image */
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unsigned long rc; /* Return value from user code */
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char *sload = NULL;
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const char *ep = env_get("autostart");
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int rcode = 0;
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/* Consume 'bootelf' */
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argc--; argv++;
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/* Check for flag. */
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if (argc >= 1 && (argv[0][0] == '-' && \
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(argv[0][1] == 'p' || argv[0][1] == 's'))) {
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sload = argv[0];
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/* Consume flag. */
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argc--; argv++;
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}
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/* Check for address. */
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if (argc >= 1 && strict_strtoul(argv[0], 16, &addr) != -EINVAL) {
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/* Consume address */
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argc--; argv++;
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} else
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addr = image_load_addr;
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if (!valid_elf_image(addr))
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return 1;
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if (sload && sload[1] == 'p')
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addr = load_elf_image_phdr(addr);
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else
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addr = load_elf_image_shdr(addr);
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if (ep && !strcmp(ep, "no"))
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return rcode;
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printf("## Starting application at 0x%08lx ...\n", addr);
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/*
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* pass address parameter as argv[0] (aka command name),
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* and all remaining args
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*/
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rc = do_bootelf_exec((void *)addr, argc, argv);
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if (rc != 0)
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rcode = 1;
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printf("## Application terminated, rc = 0x%lx\n", rc);
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return rcode;
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}
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/*
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* Interpreter command to boot VxWorks from a memory image. The image can
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* be either an ELF image or a raw binary. Will attempt to setup the
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* bootline and other parameters correctly.
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*/
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int do_bootvx(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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unsigned long addr; /* Address of image */
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unsigned long bootaddr = 0; /* Address to put the bootline */
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char *bootline; /* Text of the bootline */
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char *tmp; /* Temporary char pointer */
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char build_buf[128]; /* Buffer for building the bootline */
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int ptr = 0;
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#ifdef CONFIG_X86
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ulong base;
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struct e820_info *info;
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struct e820_entry *data;
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struct efi_gop_info *gop;
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struct vesa_mode_info *vesa = &mode_info.vesa;
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#endif
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/*
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* Check the loadaddr variable.
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* If we don't know where the image is then we're done.
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*/
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if (argc < 2)
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addr = image_load_addr;
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else
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addr = simple_strtoul(argv[1], NULL, 16);
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#if defined(CONFIG_CMD_NET)
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/*
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* Check to see if we need to tftp the image ourselves
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* before starting
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*/
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if ((argc == 2) && (strcmp(argv[1], "tftp") == 0)) {
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if (net_loop(TFTPGET) <= 0)
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return 1;
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printf("Automatic boot of VxWorks image at address 0x%08lx ...\n",
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addr);
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}
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#endif
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/*
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* This should equate to
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* NV_RAM_ADRS + NV_BOOT_OFFSET + NV_ENET_OFFSET
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* from the VxWorks BSP header files.
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* This will vary from board to board
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*/
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#if defined(CONFIG_SYS_VXWORKS_MAC_PTR)
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tmp = (char *)CONFIG_SYS_VXWORKS_MAC_PTR;
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eth_env_get_enetaddr("ethaddr", (uchar *)build_buf);
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memcpy(tmp, build_buf, 6);
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#else
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puts("## Ethernet MAC address not copied to NV RAM\n");
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#endif
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#ifdef CONFIG_X86
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/*
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* Get VxWorks's physical memory base address from environment,
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* if we don't specify it in the environment, use a default one.
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*/
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base = env_get_hex("vx_phys_mem_base", VXWORKS_PHYS_MEM_BASE);
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data = (struct e820_entry *)(base + E820_DATA_OFFSET);
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info = (struct e820_info *)(base + E820_INFO_OFFSET);
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memset(info, 0, sizeof(struct e820_info));
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info->sign = E820_SIGNATURE;
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info->entries = install_e820_map(E820MAX, data);
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info->addr = (info->entries - 1) * sizeof(struct e820_entry) +
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E820_DATA_OFFSET;
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/*
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* Explicitly clear the bootloader image size otherwise if memory
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* at this offset happens to contain some garbage data, the final
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* available memory size for the kernel is insane.
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*/
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*(u32 *)(base + BOOT_IMAGE_SIZE_OFFSET) = 0;
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/*
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* Prepare compatible framebuffer information block.
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* The VESA mode has to be 32-bit RGBA.
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*/
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if (vesa->x_resolution && vesa->y_resolution) {
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gop = (struct efi_gop_info *)(base + EFI_GOP_INFO_OFFSET);
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gop->magic = EFI_GOP_INFO_MAGIC;
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gop->info.version = 0;
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gop->info.width = vesa->x_resolution;
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gop->info.height = vesa->y_resolution;
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gop->info.pixel_format = EFI_GOT_RGBA8;
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gop->info.pixels_per_scanline = vesa->bytes_per_scanline / 4;
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gop->fb_base = vesa->phys_base_ptr;
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gop->fb_size = vesa->bytes_per_scanline * vesa->y_resolution;
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}
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#endif
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/*
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* Use bootaddr to find the location in memory that VxWorks
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* will look for the bootline string. The default value is
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* (LOCAL_MEM_LOCAL_ADRS + BOOT_LINE_OFFSET) as defined by
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* VxWorks BSP. For example, on PowerPC it defaults to 0x4200.
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*/
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tmp = env_get("bootaddr");
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if (!tmp) {
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#ifdef CONFIG_X86
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bootaddr = base + X86_BOOT_LINE_OFFSET;
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#else
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printf("## VxWorks bootline address not specified\n");
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return 1;
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#endif
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}
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if (!bootaddr)
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bootaddr = simple_strtoul(tmp, NULL, 16);
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/*
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* Check to see if the bootline is defined in the 'bootargs' parameter.
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* If it is not defined, we may be able to construct the info.
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*/
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bootline = env_get("bootargs");
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if (!bootline) {
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tmp = env_get("bootdev");
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if (tmp) {
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strcpy(build_buf, tmp);
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ptr = strlen(tmp);
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} else {
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printf("## VxWorks boot device not specified\n");
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}
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tmp = env_get("bootfile");
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if (tmp)
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ptr += sprintf(build_buf + ptr, "host:%s ", tmp);
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else
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ptr += sprintf(build_buf + ptr, "host:vxWorks ");
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/*
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* The following parameters are only needed if 'bootdev'
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* is an ethernet device, otherwise they are optional.
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*/
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tmp = env_get("ipaddr");
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if (tmp) {
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ptr += sprintf(build_buf + ptr, "e=%s", tmp);
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tmp = env_get("netmask");
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if (tmp) {
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u32 mask = env_get_ip("netmask").s_addr;
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ptr += sprintf(build_buf + ptr,
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":%08x ", ntohl(mask));
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} else {
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ptr += sprintf(build_buf + ptr, " ");
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}
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}
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tmp = env_get("serverip");
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if (tmp)
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ptr += sprintf(build_buf + ptr, "h=%s ", tmp);
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tmp = env_get("gatewayip");
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if (tmp)
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ptr += sprintf(build_buf + ptr, "g=%s ", tmp);
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tmp = env_get("hostname");
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if (tmp)
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ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);
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tmp = env_get("othbootargs");
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if (tmp) {
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strcpy(build_buf + ptr, tmp);
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ptr += strlen(tmp);
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}
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bootline = build_buf;
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}
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memcpy((void *)bootaddr, bootline, max(strlen(bootline), (size_t)255));
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flush_cache(bootaddr, max(strlen(bootline), (size_t)255));
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printf("## Using bootline (@ 0x%lx): %s\n", bootaddr, (char *)bootaddr);
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/*
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* If the data at the load address is an elf image, then
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* treat it like an elf image. Otherwise, assume that it is a
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* binary image.
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*/
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if (valid_elf_image(addr))
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addr = load_elf_image_phdr(addr);
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else
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puts("## Not an ELF image, assuming binary\n");
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printf("## Starting vxWorks at 0x%08lx ...\n", addr);
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dcache_disable();
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#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
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armv8_setup_psci();
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smp_kick_all_cpus();
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#endif
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#ifdef CONFIG_X86
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/* VxWorks on x86 uses stack to pass parameters */
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((asmlinkage void (*)(int))addr)(0);
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#else
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((void (*)(int))addr)(0);
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#endif
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puts("## vxWorks terminated\n");
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return 1;
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}
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U_BOOT_CMD(
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bootelf, CONFIG_SYS_MAXARGS, 0, do_bootelf,
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"Boot from an ELF image in memory",
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"[-p|-s] [address]\n"
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"\t- load ELF image at [address] via program headers (-p)\n"
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"\t or via section headers (-s)"
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);
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U_BOOT_CMD(
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bootvx, 2, 0, do_bootvx,
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"Boot vxWorks from an ELF image",
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" [address] - load address of vxWorks ELF image."
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);
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