x86: Add a common HOB library

FSP (CONFIG_HAVE_FSP) and Slim Bootloader (CONFIG_SYS_SLIMBOOTLOADER)
consume HOB (CONFIG_USE_HOB) data from the each HOB list pointer.
Add a common HOB library in lib/hob.c and include/asm/hob.h.

Signed-off-by: Aiden Park <aiden.park@intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/cmd/x86/hob.c b/cmd/x86/hob.c
new file mode 100644
index 0000000000..3967a7ca5a
--- /dev/null
+++ b/cmd/x86/hob.c
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2014-2015, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <efi.h>
+#include <asm/hob.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static char *hob_type[] = {
+	"reserved",
+	"Hand-off",
+	"Mem Alloc",
+	"Res Desc",
+	"GUID Ext",
+	"FV",
+	"CPU",
+	"Mem Pool",
+	"reserved",
+	"FV2",
+	"Load PEIM",
+	"Capsule",
+};
+
+static int do_hob(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	const struct hob_header *hdr;
+	uint type;
+	char *desc;
+	int i = 0;
+	efi_guid_t *guid;
+	char uuid[UUID_STR_LEN + 1];
+
+	hdr = gd->arch.hob_list;
+
+	printf("HOB list address: 0x%08x\n\n", (unsigned int)hdr);
+
+	printf("#  | Address  | Type      | Len  | ");
+	printf("%36s\n", "GUID");
+	printf("---|----------|-----------|------|-");
+	printf("------------------------------------\n");
+	while (!end_of_hob(hdr)) {
+		printf("%02x | %08x | ", i, (unsigned int)hdr);
+		type = hdr->type;
+		if (type == HOB_TYPE_UNUSED)
+			desc = "*Unused*";
+		else if (type == HOB_TYPE_EOH)
+			desc = "*EOH*";
+		else if (type >= 0 && type <= ARRAY_SIZE(hob_type))
+			desc = hob_type[type];
+		else
+			desc = "*Invalid*";
+		printf("%-9s | %04x | ", desc, hdr->len);
+
+		if (type == HOB_TYPE_MEM_ALLOC || type == HOB_TYPE_RES_DESC ||
+		    type == HOB_TYPE_GUID_EXT) {
+			guid = (efi_guid_t *)(hdr + 1);
+			uuid_bin_to_str(guid->b, uuid, UUID_STR_FORMAT_GUID);
+			printf("%s", uuid);
+		} else {
+			printf("%36s", "Not Available");
+		}
+		printf("\n");
+		hdr = get_next_hob(hdr);
+		i++;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(hob, 1, 1, do_hob,
+	   "Print Hand-Off Block (HOB) information",
+	   ""
+);