3 files changed, 88 insertions, 54 deletions

diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 436252dd831..906be5eab98 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -42,6 +42,7 @@ obj-y	+= tables.o
 ifndef CONFIG_SPL_BUILD
 obj-$(CONFIG_CMD_ZBOOT)	+= zimage.o
 endif
+obj-$(CONFIG_USE_HOB) += hob.o
 obj-$(CONFIG_HAVE_FSP) += fsp/
 
 ifdef CONFIG_SPL_BUILD
diff --git a/arch/x86/lib/fsp/fsp_support.c b/arch/x86/lib/fsp/fsp_support.c
index 353fa82de5c..0eaa9b232b1 100644
--- a/arch/x86/lib/fsp/fsp_support.c
+++ b/arch/x86/lib/fsp/fsp_support.c
@@ -344,74 +344,23 @@ u32 fsp_get_tseg_reserved_mem(const void *hob_list, u32 *len)
 	return base;
 }
 
-const struct hob_header *fsp_get_next_hob(uint type, const void *hob_list)
-{
-	const struct hob_header *hdr;
-
-	hdr = hob_list;
-
-	/* Parse the HOB list until end of list or matching type is found */
-	while (!end_of_hob(hdr)) {
-		if (hdr->type == type)
-			return hdr;
-
-		hdr = get_next_hob(hdr);
-	}
-
-	return NULL;
-}
-
-const struct hob_header *fsp_get_next_guid_hob(const efi_guid_t *guid,
-					       const void *hob_list)
-{
-	const struct hob_header *hdr;
-	struct hob_guid *guid_hob;
-
-	hdr = hob_list;
-	while ((hdr = fsp_get_next_hob(HOB_TYPE_GUID_EXT,
-			hdr)) != NULL) {
-		guid_hob = (struct hob_guid *)hdr;
-		if (!guidcmp(guid, &guid_hob->name))
-			break;
-		hdr = get_next_hob(hdr);
-	}
-
-	return hdr;
-}
-
-void *fsp_get_guid_hob_data(const void *hob_list, u32 *len,
-			    const efi_guid_t *guid)
-{
-	const struct hob_header *guid_hob;
-
-	guid_hob = fsp_get_next_guid_hob(guid, hob_list);
-	if (guid_hob == NULL) {
-		return NULL;
-	} else {
-		if (len)
-			*len = get_guid_hob_data_size(guid_hob);
-
-		return get_guid_hob_data(guid_hob);
-	}
-}
-
 void *fsp_get_nvs_data(const void *hob_list, u32 *len)
 {
 	const efi_guid_t guid = FSP_NON_VOLATILE_STORAGE_HOB_GUID;
 
-	return fsp_get_guid_hob_data(hob_list, len, &guid);
+	return hob_get_guid_hob_data(hob_list, len, &guid);
 }
 
 void *fsp_get_bootloader_tmp_mem(const void *hob_list, u32 *len)
 {
 	const efi_guid_t guid = FSP_BOOTLOADER_TEMP_MEM_HOB_GUID;
 
-	return fsp_get_guid_hob_data(hob_list, len, &guid);
+	return hob_get_guid_hob_data(hob_list, len, &guid);
 }
 
 void *fsp_get_graphics_info(const void *hob_list, u32 *len)
 {
 	const efi_guid_t guid = FSP_GRAPHICS_INFO_HOB_GUID;
 
-	return fsp_get_guid_hob_data(hob_list, len, &guid);
+	return hob_get_guid_hob_data(hob_list, len, &guid);
 }
diff --git a/arch/x86/lib/hob.c b/arch/x86/lib/hob.c
new file mode 100644
index 00000000000..dcee29b04cf
--- /dev/null
+++ b/arch/x86/lib/hob.c
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: Intel
+/*
+ * Copyright (C) 2013, Intel Corporation
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <asm/hob.h>
+
+/**
+ * Returns the next instance of a HOB type from the starting HOB.
+ *
+ * @type:     HOB type to search
+ * @hob_list: A pointer to the HOB list
+ *
+ * @retval:   A HOB object with matching type; Otherwise NULL.
+ */
+const struct hob_header *hob_get_next_hob(uint type, const void *hob_list)
+{
+	const struct hob_header *hdr;
+
+	hdr = hob_list;
+
+	/* Parse the HOB list until end of list or matching type is found */
+	while (!end_of_hob(hdr)) {
+		if (hdr->type == type)
+			return hdr;
+
+		hdr = get_next_hob(hdr);
+	}
+
+	return NULL;
+}
+
+/**
+ * Returns the next instance of the matched GUID HOB from the starting HOB.
+ *
+ * @guid:     GUID to search
+ * @hob_list: A pointer to the HOB list
+ *
+ * @retval:   A HOB object with matching GUID; Otherwise NULL.
+ */
+const struct hob_header *hob_get_next_guid_hob(const efi_guid_t *guid,
+					       const void *hob_list)
+{
+	const struct hob_header *hdr;
+	struct hob_guid *guid_hob;
+
+	hdr = hob_list;
+	while ((hdr = hob_get_next_hob(HOB_TYPE_GUID_EXT, hdr))) {
+		guid_hob = (struct hob_guid *)hdr;
+		if (!guidcmp(guid, &guid_hob->name))
+			break;
+		hdr = get_next_hob(hdr);
+	}
+
+	return hdr;
+}
+
+/**
+ * This function retrieves a GUID HOB data buffer and size.
+ *
+ * @hob_list:      A HOB list pointer.
+ * @len:           A pointer to the GUID HOB data buffer length.
+ *                 If the GUID HOB is located, the length will be updated.
+ * @guid           A pointer to HOB GUID.
+ *
+ * @retval NULL:   Failed to find the GUID HOB.
+ * @retval others: GUID HOB data buffer pointer.
+ */
+void *hob_get_guid_hob_data(const void *hob_list, u32 *len,
+			    const efi_guid_t *guid)
+{
+	const struct hob_header *guid_hob;
+
+	guid_hob = hob_get_next_guid_hob(guid, hob_list);
+	if (!guid_hob)
+		return NULL;
+
+	if (len)
+		*len = get_guid_hob_data_size(guid_hob);
+
+	return get_guid_hob_data(guid_hob);
+}