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https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
x86: zboot: Add an option to dump the setup information
There is a lot of information in the setup block and it is quite hard to decode manually. Add a 'zboot dump' command to decode it into a human-readable format. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
Bin Meng
parent
f82cd7b725
commit
631c2b9fc4
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@ -8,6 +8,7 @@
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#define E820_ACPI 3
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#define E820_NVS 4
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#define E820_UNUSABLE 5
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#define E820_COUNT 6 /* Number of types */
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#ifndef __ASSEMBLY__
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#include <linux/types.h>
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@ -73,6 +73,8 @@ enum {
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ZBOOT_STATE_INFO = BIT(3),
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ZBOOT_STATE_GO = BIT(4),
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/* This one doesn't execute automatically, so stop the count before 5 */
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ZBOOT_STATE_DUMP = BIT(5),
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ZBOOT_STATE_COUNT = 5,
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};
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@ -458,6 +460,199 @@ static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc,
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return CMD_RET_FAILURE;
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}
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static void print_num(const char *name, ulong value)
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{
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printf("%-20s: %lx\n", name, value);
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}
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static void print_num64(const char *name, u64 value)
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{
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printf("%-20s: %llx\n", name, value);
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}
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static const char *const e820_type_name[E820_COUNT] = {
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[E820_RAM] = "RAM",
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[E820_RESERVED] = "Reserved",
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[E820_ACPI] = "ACPI",
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[E820_NVS] = "ACPI NVS",
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[E820_UNUSABLE] = "Unusable",
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};
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static const char *const bootloader_id[] = {
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"LILO",
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"Loadlin",
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"bootsect-loader",
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"Syslinux",
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"Etherboot/gPXE/iPXE",
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"ELILO",
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"undefined",
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"GRUB",
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"U-Boot",
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"Xen",
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"Gujin",
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"Qemu",
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"Arcturus Networks uCbootloader",
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"kexec-tools",
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"Extended",
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"Special",
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"Reserved",
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"Minimal Linux Bootloader",
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"OVMF UEFI virtualization stack",
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};
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struct flag_info {
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uint bit;
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const char *name;
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};
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static struct flag_info load_flags[] = {
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{ LOADED_HIGH, "loaded-high" },
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{ QUIET_FLAG, "quiet" },
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{ KEEP_SEGMENTS, "keep-segments" },
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{ CAN_USE_HEAP, "can-use-heap" },
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};
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static struct flag_info xload_flags[] = {
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{ XLF_KERNEL_64, "64-bit-entry" },
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{ XLF_CAN_BE_LOADED_ABOVE_4G, "can-load-above-4gb" },
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{ XLF_EFI_HANDOVER_32, "32-efi-handoff" },
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{ XLF_EFI_HANDOVER_64, "64-efi-handoff" },
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{ XLF_EFI_KEXEC, "kexec-efi-runtime" },
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};
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static void print_flags(struct flag_info *flags, int count, uint value)
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{
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int i;
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printf("%-20s:", "");
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for (i = 0; i < count; i++) {
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uint mask = flags[i].bit;
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if (value & mask)
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printf(" %s", flags[i].name);
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}
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printf("\n");
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}
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static void show_loader(struct setup_header *hdr)
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{
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bool version_valid = false;
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int type, version;
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const char *name;
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type = hdr->type_of_loader >> 4;
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version = hdr->type_of_loader & 0xf;
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if (type == 0xe)
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type = 0x10 + hdr->ext_loader_type;
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version |= hdr->ext_loader_ver << 4;
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if (!hdr->type_of_loader) {
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name = "pre-2.00 bootloader";
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} else if (hdr->type_of_loader == 0xff) {
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name = "unknown";
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} else if (type < ARRAY_SIZE(bootloader_id)) {
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name = bootloader_id[type];
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version_valid = true;
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} else {
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name = "undefined";
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}
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printf("%20s %s", "", name);
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if (version_valid)
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printf(", version %x", version);
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printf("\n");
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}
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int do_zboot_dump(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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struct boot_params *base_ptr = state.base_ptr;
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struct setup_header *hdr;
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const char *version;
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int i;
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if (argc > 1)
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base_ptr = (void *)simple_strtoul(argv[1], NULL, 16);
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if (!base_ptr) {
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printf("No zboot setup_base\n");
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return CMD_RET_FAILURE;
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}
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printf("Setup located at %p:\n\n", base_ptr);
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print_num64("ACPI RSDP addr", base_ptr->acpi_rsdp_addr);
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printf("E820: %d entries\n", base_ptr->e820_entries);
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if (base_ptr->e820_entries) {
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printf("%18s %16s %s\n", "Addr", "Size", "Type");
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for (i = 0; i < base_ptr->e820_entries; i++) {
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struct e820_entry *entry = &base_ptr->e820_map[i];
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printf("%12llx %10llx %s\n", entry->addr, entry->size,
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entry->type < E820_COUNT ?
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e820_type_name[entry->type] :
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simple_itoa(entry->type));
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}
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}
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hdr = &base_ptr->hdr;
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print_num("Setup sectors", hdr->setup_sects);
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print_num("Root flags", hdr->root_flags);
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print_num("Sys size", hdr->syssize);
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print_num("RAM size", hdr->ram_size);
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print_num("Video mode", hdr->vid_mode);
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print_num("Root dev", hdr->root_dev);
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print_num("Boot flag", hdr->boot_flag);
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print_num("Jump", hdr->jump);
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print_num("Header", hdr->header);
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if (hdr->header == KERNEL_V2_MAGIC)
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printf("%-20s %s\n", "", "Kernel V2");
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else
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printf("%-20s %s\n", "", "Ancient kernel, using version 100");
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print_num("Version", hdr->version);
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print_num("Real mode switch", hdr->realmode_swtch);
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print_num("Start sys", hdr->start_sys);
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print_num("Kernel version", hdr->kernel_version);
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version = get_kernel_version(base_ptr, (void *)state.bzimage_addr);
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if (version)
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printf(" @%p: %s\n", version, version);
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print_num("Type of loader", hdr->type_of_loader);
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show_loader(hdr);
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print_num("Load flags", hdr->loadflags);
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print_flags(load_flags, ARRAY_SIZE(load_flags), hdr->loadflags);
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print_num("Setup move size", hdr->setup_move_size);
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print_num("Code32 start", hdr->code32_start);
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print_num("Ramdisk image", hdr->ramdisk_image);
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print_num("Ramdisk size", hdr->ramdisk_size);
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print_num("Bootsect kludge", hdr->bootsect_kludge);
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print_num("Heap end ptr", hdr->heap_end_ptr);
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print_num("Ext loader ver", hdr->ext_loader_ver);
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print_num("Ext loader type", hdr->ext_loader_type);
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print_num("Command line ptr", hdr->cmd_line_ptr);
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if (hdr->cmd_line_ptr) {
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printf(" ");
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/* Use puts() to avoid limits from CONFIG_SYS_PBSIZE */
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puts((char *)hdr->cmd_line_ptr);
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printf("\n");
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}
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print_num("Initrd addr max", hdr->initrd_addr_max);
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print_num("Kernel alignment", hdr->kernel_alignment);
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print_num("Relocatable kernel", hdr->relocatable_kernel);
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print_num("Min alignment", hdr->min_alignment);
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if (hdr->min_alignment)
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printf("%-20s: %x\n", "", 1 << hdr->min_alignment);
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print_num("Xload flags", hdr->xloadflags);
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print_flags(xload_flags, ARRAY_SIZE(xload_flags), hdr->xloadflags);
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print_num("Cmdline size", hdr->cmdline_size);
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print_num("Hardware subarch", hdr->hardware_subarch);
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print_num64("HW subarch data", hdr->hardware_subarch_data);
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print_num("Payload offset", hdr->payload_offset);
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print_num("Payload length", hdr->payload_length);
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print_num64("Setup data", hdr->setup_data);
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print_num64("Pref address", hdr->pref_address);
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print_num("Init size", hdr->init_size);
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print_num("Handover offset", hdr->handover_offset);
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if (get_boot_protocol(hdr, false) >= 0x215)
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print_num("Kernel info offset", hdr->kernel_info_offset);
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return 0;
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}
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/* Note: This defines the complete_zboot() function */
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U_BOOT_SUBCMDS(zboot,
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U_BOOT_CMD_MKENT(start, 7, 1, do_zboot_start, "", ""),
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@ -465,6 +660,7 @@ U_BOOT_SUBCMDS(zboot,
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U_BOOT_CMD_MKENT(setup, 1, 1, do_zboot_setup, "", ""),
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U_BOOT_CMD_MKENT(info, 1, 1, do_zboot_info, "", ""),
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U_BOOT_CMD_MKENT(go, 1, 1, do_zboot_go, "", ""),
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U_BOOT_CMD_MKENT(dump, 2, 1, do_zboot_dump, "", ""),
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)
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int do_zboot_states(struct cmd_tbl *cmdtp, int flag, int argc,
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@ -528,6 +724,7 @@ U_BOOT_CMDREP_COMPLETE(
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"\tload - load OS image\n"
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"\tsetup - set up table\n"
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"\tinfo - show summary info\n"
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"\tgo - start OS\n",
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"\tgo - start OS\n"
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"\tdump [addr] - dump info (optional address of boot params)",
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complete_zboot
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);
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