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#include <efi.h>
#include <efilib.h>
typedef struct esrt {
UINT32 fw_resource_count;
UINT32 fw_resource_count_max;
UINT64 version;
} __attribute__((__packed__)) esrt_t;
typedef struct esre1 {
EFI_GUID fw_class;
UINT32 fw_type;
UINT32 fw_version;
UINT32 lowest_supported_fw_version;
UINT32 capsule_flags;
UINT32 last_attempt_version;
UINT32 last_attempt_status;
} __attribute__((__packed__)) esre1_t;
#define esrt_guid { 0xb122a263, 0x3661, 0x4f68, { 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80 }}
static EFI_GUID EsrtGuid = esrt_guid;
#include "hexdump.h"
static void
dump_esrt(VOID *data)
{
esrt_t *esrt = data;
esre1_t *esre1 = (esre1_t *)((UINT8 *)data + sizeof (*esrt));
hexdump(data, sizeof(*esrt));
for (unsigned int i = 0; i < esrt->fw_resource_count; i++) {
if (esrt->version == 1) {
Print(L"{%g}:\n", &esre1->fw_class);
Print(L" type:%d fv:0x%08x lsfv:0x%08x fl:0x%08x ",
esre1->fw_type, esre1->fw_version,
esre1->lowest_supported_fw_version,
esre1->capsule_flags);
Print(L"lav: 0x%08x las: %d\n",
esre1->last_attempt_version,
esre1->last_attempt_status);
hexdump((void *)esre1, sizeof (*esre1));
esre1++;
} else {
Print(L"Weird ESRT version %d\n", esrt->version);
}
}
}
EFI_STATUS
efi_main (EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *systab)
{
EFI_CONFIGURATION_TABLE *ect = systab->ConfigurationTable;
InitializeLib(image_handle, systab);
for (unsigned int i = 0; i < systab->NumberOfTableEntries; i++) {
if (CompareMem(&ect->VendorGuid, &EsrtGuid, sizeof(EsrtGuid))) {
ect++;
continue;
}
Print(L"Dumping VendorTable at %016x\n", ect->VendorTable);
dump_esrt(ect->VendorTable);
return 0;
}
Print(L"ESRT not found.\n");
return 0;
}
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