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-rw-r--r--cmd/elf.c231
1 files changed, 145 insertions, 86 deletions
diff --git a/cmd/elf.c b/cmd/elf.c
index 19479bb706..eafea38aed 100644
--- a/cmd/elf.c
+++ b/cmd/elf.c
@@ -20,13 +20,52 @@
#include <net.h>
#include <vxworks.h>
#ifdef CONFIG_X86
+#include <vbe.h>
#include <asm/e820.h>
#include <linux/linkage.h>
#endif
/*
- * A very simple elf loader, assumes the image is valid, returns the
+ * A very simple ELF64 loader, assumes the image is valid, returns the
* entry point address.
+ *
+ * Note if U-Boot is 32-bit, the loader assumes the to segment's
+ * physical address and size is within the lower 32-bit address space.
+ */
+static unsigned long load_elf64_image_phdr(unsigned long addr)
+{
+ Elf64_Ehdr *ehdr; /* Elf header structure pointer */
+ Elf64_Phdr *phdr; /* Program header structure pointer */
+ int i;
+
+ ehdr = (Elf64_Ehdr *)addr;
+ phdr = (Elf64_Phdr *)(addr + (ulong)ehdr->e_phoff);
+
+ /* Load each program header */
+ for (i = 0; i < ehdr->e_phnum; ++i) {
+ void *dst = (void *)(ulong)phdr->p_paddr;
+ void *src = (void *)addr + phdr->p_offset;
+
+ debug("Loading phdr %i to 0x%p (%lu bytes)\n",
+ i, dst, (ulong)phdr->p_filesz);
+ if (phdr->p_filesz)
+ memcpy(dst, src, phdr->p_filesz);
+ if (phdr->p_filesz != phdr->p_memsz)
+ memset(dst + phdr->p_filesz, 0x00,
+ phdr->p_memsz - phdr->p_filesz);
+ flush_cache((unsigned long)dst, phdr->p_filesz);
+ ++phdr;
+ }
+
+ return ehdr->e_entry;
+}
+
+/*
+ * A very simple ELF loader, assumes the image is valid, returns the
+ * entry point address.
+ *
+ * The loader firstly reads the EFI class to see if it's a 64-bit image.
+ * If yes, call the ELF64 loader. Otherwise continue with the ELF32 loader.
*/
static unsigned long load_elf_image_phdr(unsigned long addr)
{
@@ -35,12 +74,16 @@ static unsigned long load_elf_image_phdr(unsigned long addr)
int i;
ehdr = (Elf32_Ehdr *)addr;
+ if (ehdr->e_ident[EI_CLASS] == ELFCLASS64)
+ return load_elf64_image_phdr(addr);
+
phdr = (Elf32_Phdr *)(addr + ehdr->e_phoff);
/* Load each program header */
for (i = 0; i < ehdr->e_phnum; ++i) {
void *dst = (void *)(uintptr_t)phdr->p_paddr;
void *src = (void *)addr + phdr->p_offset;
+
debug("Loading phdr %i to 0x%p (%i bytes)\n",
i, dst, phdr->p_filesz);
if (phdr->p_filesz)
@@ -203,14 +246,17 @@ int do_bootelf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
unsigned long addr; /* Address of image */
- unsigned long bootaddr; /* Address to put the bootline */
+ 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
- struct e820info *info;
- struct e820entry *data;
+ ulong base;
+ struct e820_info *info;
+ struct e820_entry *data;
+ struct efi_gop_info *gop;
+ struct vesa_mode_info *vesa = &mode_info.vesa;
#endif
/*
@@ -249,6 +295,45 @@ int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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
@@ -257,104 +342,78 @@ int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
*/
tmp = env_get("bootaddr");
if (!tmp) {
+#ifdef CONFIG_X86
+ bootaddr = base + X86_BOOT_LINE_OFFSET;
+#else
printf("## VxWorks bootline address not specified\n");
- } else {
+ 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) {
- memcpy((void *)bootaddr, bootline,
- max(strlen(bootline), (size_t)255));
- flush_cache(bootaddr, max(strlen(bootline),
- (size_t)255));
+ /*
+ * 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 {
- tmp = env_get("bootdev");
- if (tmp) {
- strcpy(build_buf, tmp);
- ptr = strlen(tmp);
- } else
- printf("## VxWorks boot device not specified\n");
+ 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 ");
+ 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");
+ /*
+ * 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) {
- 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, " ");
- }
+ 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("serverip");
+ if (tmp)
+ ptr += sprintf(build_buf + ptr, "h=%s ", tmp);
- tmp = env_get("hostname");
- if (tmp)
- ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);
+ tmp = env_get("gatewayip");
+ if (tmp)
+ ptr += sprintf(build_buf + ptr, "g=%s ", tmp);
- tmp = env_get("othbootargs");
- if (tmp) {
- strcpy(build_buf + ptr, tmp);
- ptr += strlen(tmp);
- }
+ tmp = env_get("hostname");
+ if (tmp)
+ ptr += sprintf(build_buf + ptr, "tn=%s ", tmp);
- memcpy((void *)bootaddr, build_buf,
- max(strlen(build_buf), (size_t)255));
- flush_cache(bootaddr, max(strlen(build_buf),
- (size_t)255));
+ tmp = env_get("othbootargs");
+ if (tmp) {
+ strcpy(build_buf + ptr, tmp);
+ ptr += strlen(tmp);
}
- printf("## Using bootline (@ 0x%lx): %s\n", bootaddr,
- (char *)bootaddr);
+ bootline = build_buf;
}
-#ifdef CONFIG_X86
- /*
- * Since E820 information is critical to the kernel, if we don't
- * specify these in the environments, use a default one.
- */
- tmp = env_get("e820data");
- if (tmp)
- data = (struct e820entry *)simple_strtoul(tmp, NULL, 16);
- else
- data = (struct e820entry *)VXWORKS_E820_DATA_ADDR;
- tmp = env_get("e820info");
- if (tmp)
- info = (struct e820info *)simple_strtoul(tmp, NULL, 16);
- else
- info = (struct e820info *)VXWORKS_E820_INFO_ADDR;
-
- memset(info, 0, sizeof(struct e820info));
- info->sign = E820_SIGNATURE;
- info->entries = install_e820_map(E820MAX, data);
- info->addr = (info->entries - 1) * sizeof(struct e820entry) +
- VXWORKS_E820_DATA_ADDR;
-#endif
+ 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
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-07 08:22:41 +0300