1 files changed, 309 insertions, 0 deletions
diff --git a/roms/u-boot/cmd/elf.c b/roms/u-boot/cmd/elf.c
new file mode 100644
index 000000000..d44b95d90
--- /dev/null
+++ b/roms/u-boot/cmd/elf.c
@@ -0,0 +1,309 @@
+// SPDX-License-Identifier: BSD-2-Clause
+/*
+ * Copyright (c) 2001 William L. Pitts
+ * All rights reserved.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <cpu_func.h>
+#include <elf.h>
+#include <env.h>
+#include <image.h>
+#include <log.h>
+#include <net.h>
+#include <vxworks.h>
+#ifdef CONFIG_X86
+#include <vbe.h>
+#include <asm/cache.h>
+#include <asm/e820.h>
+#include <linux/linkage.h>
+#endif
+
+/* Allow ports to override the default behavior */
+static unsigned long do_bootelf_exec(ulong (*entry)(int, char * const[]),
+				     int argc, char *const argv[])
+{
+	unsigned long ret;
+
+	/*
+	 * pass address parameter as argv[0] (aka command name),
+	 * and all remaining args
+	 */
+	ret = entry(argc, argv);
+
+	return ret;
+}
+
+/* Interpreter command to boot an arbitrary ELF image from memory */
+int do_bootelf(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+	unsigned long addr; /* Address of the ELF image */
+	unsigned long rc; /* Return value from user code */
+	char *sload = NULL;
+	const char *ep = env_get("autostart");
+	int rcode = 0;
+
+	/* Consume 'bootelf' */
+	argc--; argv++;
+
+	/* Check for flag. */
+	if (argc >= 1 && (argv[0][0] == '-' && \
+				(argv[0][1] == 'p' || argv[0][1] == 's'))) {
+		sload = argv[0];
+		/* Consume flag. */
+		argc--; argv++;
+	}
+	/* Check for address. */
+	if (argc >= 1 && strict_strtoul(argv[0], 16, &addr) != -EINVAL) {
+		/* Consume address */
+		argc--; argv++;
+	} else
+		addr = image_load_addr;
+
+	if (!valid_elf_image(addr))
+		return 1;
+
+	if (sload && sload[1] == 'p')
+		addr = load_elf_image_phdr(addr);
+	else
+		addr = load_elf_image_shdr(addr);
+
+	if (ep && !strcmp(ep, "no"))
+		return rcode;
+
+	printf("## Starting application at 0x%08lx ...\n", addr);
+
+	/*
+	 * pass address parameter as argv[0] (aka command name),
+	 * and all remaining args
+	 */
+	rc = do_bootelf_exec((void *)addr, argc, argv);
+	if (rc != 0)
+		rcode = 1;
+
+	printf("## Application terminated, rc = 0x%lx\n", rc);
+
+	return rcode;
+}
+
+/*
+ * Interpreter command to boot VxWorks from a memory image.  The image can
+ * be either an ELF image or a raw binary.  Will attempt to setup the
+ * bootline and other parameters correctly.
+ */
+int do_bootvx(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+	unsigned long addr; /* Address of image */
+	unsigned long bootaddr = 0; /* Address to put the bootline */
+	char *bootline; /* Text of the bootline */
+	char *tmp; /* Temporary char pointer */
+	char build_buf[128]; /* Buffer for building the bootline */
+	int ptr = 0;
+#ifdef CONFIG_X86
+	ulong base;
+	struct e820_info *info;
+	struct e820_entry *data;
+	struct efi_gop_info *gop;
+	struct vesa_mode_info *vesa = &mode_info.vesa;
+#endif
+
+	/*
+	 * Check the loadaddr variable.
+	 * If we don't know where the image is then we're done.
+	 */
+	if (argc < 2)
+		addr = image_load_addr;
+	else
+		addr = simple_strtoul(argv[1], NULL, 16);
+
+#if defined(CONFIG_CMD_NET)
+	/*
+	 * Check to see if we need to tftp the image ourselves
+	 * before starting
+	 */
+	if ((argc == 2) && (strcmp(argv[1], "tftp") == 0)) {
+		if (net_loop(TFTPGET) <= 0)
+			return 1;
+		printf("Automatic boot of VxWorks image at address 0x%08lx ...\n",
+			addr);
+	}
+#endif
+
+	/*
+	 * This should equate to
+	 * NV_RAM_ADRS + NV_BOOT_OFFSET + NV_ENET_OFFSET
+	 * from the VxWorks BSP header files.
+	 * This will vary from board to board
+	 */
+#if defined(CONFIG_SYS_VXWORKS_MAC_PTR)
+	tmp = (char *)CONFIG_SYS_VXWORKS_MAC_PTR;
+	eth_env_get_enetaddr("ethaddr", (uchar *)build_buf);
+	memcpy(tmp, build_buf, 6);
+#else
+	puts("## Ethernet MAC address not copied to NV RAM\n");
+#endif
+
+#ifdef CONFIG_X86
+	/*
+	 * Get VxWorks's physical memory base address from environment,
+	 * if we don't specify it in the environment, use a default one.
+	 */
+	base = env_get_hex("vx_phys_mem_base", VXWORKS_PHYS_MEM_BASE);
+	data = (struct e820_entry *)(base + E820_DATA_OFFSET);
+	info = (struct e820_info *)(base + E820_INFO_OFFSET);
+
+	memset(info, 0, sizeof(struct e820_info));
+	info->sign = E820_SIGNATURE;
+	info->entries = install_e820_map(E820MAX, data);
+	info->addr = (info->entries - 1) * sizeof(struct e820_entry) +
+		     E820_DATA_OFFSET;
+
+	/*
+	 * Explicitly clear the bootloader image size otherwise if memory
+	 * at this offset happens to contain some garbage data, the final
+	 * available memory size for the kernel is insane.
+	 */
+	*(u32 *)(base + BOOT_IMAGE_SIZE_OFFSET) = 0;
+
+	/*
+	 * Prepare compatible framebuffer information block.
+	 * The VESA mode has to be 32-bit RGBA.
+	 */
+	if (vesa->x_resolution && vesa->y_resolution) {
+		gop = (struct efi_gop_info *)(base + EFI_GOP_INFO_OFFSET);
+		gop->magic = EFI_GOP_INFO_MAGIC;
+		gop->info.version = 0;
+		gop->info.width = vesa->x_resolution;
+		gop->info.height = vesa->y_resolution;
+		gop->info.pixel_format = EFI_GOT_RGBA8;
+		gop->info.pixels_per_scanline = vesa->bytes_per_scanline / 4;
+		gop->fb_base = vesa->phys_base_ptr;
+		gop->fb_size = vesa->bytes_per_scanline * vesa->y_resolution;
+	}
+#endif
+
+	/*
+	 * Use bootaddr to find the location in memory that VxWorks
+	 * will look for the bootline string. The default value is
+	 * (LOCAL_MEM_LOCAL_ADRS + BOOT_LINE_OFFSET) as defined by
+	 * VxWorks BSP. For example, on PowerPC it defaults to 0x4200.
+	 */
+	tmp = env_get("bootaddr");
+	if (!tmp) {
+#ifdef CONFIG_X86
+		bootaddr = base + X86_BOOT_LINE_OFFSET;
+#else
+		printf("## VxWorks bootline address not specified\n");
+		return 1;
+#endif
+	}
+
+	if (!bootaddr)
+		bootaddr = simple_strtoul(tmp, NULL, 16);
+
+	/*
+	 * Check to see if the bootline is defined in the 'bootargs' parameter.
+	 * If it is not defined, we may be able to construct the info.
+	 */
+	bootline = env_get("bootargs");
+	if (!bootline) {
+		tmp = env_get("bootdev");
+		if (tmp) {
+			strcpy(build_buf, tmp);
+			ptr = strlen(tmp);
+		} else {
+			printf("## VxWorks boot device not specified\n");
+		}
+
+		tmp = env_get("bootfile");
+		if (tmp)
+			ptr += sprintf(build_buf + ptr, "host:%s ", tmp);
+		else
+			ptr += sprintf(build_buf + ptr, "host:vxWorks ");
+
+		/*
+		 * The following parameters are only needed if 'bootdev'
+		 * is an ethernet device, otherwise they are optional.
+		 */
+		tmp = env_get("ipaddr");
+		if (tmp) {
+			ptr += sprintf(build_buf + ptr, "e=%s", tmp);
+			tmp = env_get("netmask");
+			if (tmp) {
+				u32 mask = env_get_ip("netmask").s_addr;
+				ptr += sprintf(build_buf + ptr,
+					       ":%08x ", ntohl(mask));
+			} else {
+				ptr += sprintf(build_buf + ptr, " ");
+			}
+		}
+
+		tmp = env_get("serverip");
+		if (tmp)
+			ptr += sprintf(build_buf + ptr, "h=%s ", tmp);
+
+		tmp = env_get("gatewayip");
+		if (tmp)
+			ptr += sprintf(build_buf + ptr, "g=%s ", tmp);
+
+		tmp = env_get("hostname");
+		if (tmp)
+			ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);
+
+		tmp = env_get("othbootargs");
+		if (tmp) {
+			strcpy(build_buf + ptr, tmp);
+			ptr += strlen(tmp);
+		}
+
+		bootline = build_buf;
+	}
+
+	memcpy((void *)bootaddr, bootline, max(strlen(bootline), (size_t)255));
+	flush_cache(bootaddr, max(strlen(bootline), (size_t)255));
+	printf("## Using bootline (@ 0x%lx): %s\n", bootaddr, (char *)bootaddr);
+
+	/*
+	 * If the data at the load address is an elf image, then
+	 * treat it like an elf image. Otherwise, assume that it is a
+	 * binary image.
+	 */
+	if (valid_elf_image(addr))
+		addr = load_elf_image_phdr(addr);
+	else
+		puts("## Not an ELF image, assuming binary\n");
+
+	printf("## Starting vxWorks at 0x%08lx ...\n", addr);
+
+	dcache_disable();
+#if defined(CONFIG_ARM64) && defined(CONFIG_ARMV8_PSCI)
+	armv8_setup_psci();
+	smp_kick_all_cpus();
+#endif
+
+#ifdef CONFIG_X86
+	/* VxWorks on x86 uses stack to pass parameters */
+	((asmlinkage void (*)(int))addr)(0);
+#else
+	((void (*)(int))addr)(0);
+#endif
+
+	puts("## vxWorks terminated\n");
+
+	return 1;
+}
+
+U_BOOT_CMD(
+	bootelf, CONFIG_SYS_MAXARGS, 0, do_bootelf,
+	"Boot from an ELF image in memory",
+	"[-p|-s] [address]\n"
+	"\t- load ELF image at [address] via program headers (-p)\n"
+	"\t  or via section headers (-s)"
+);
+
+U_BOOT_CMD(
+	bootvx, 2, 0, do_bootvx,
+	"Boot vxWorks from an ELF image",
+	" [address] - load address of vxWorks ELF image."
+);