x86: fsp: Move common support functions into a common file

Some of this file can be shared between FSP1 and FSP2. Move it into a
shared file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>

2 files changed, 177 insertions, 0 deletions

diff --git a/arch/x86/lib/fsp/Makefile b/arch/x86/lib/fsp/Makefile
index e7a8427c2e..9e34856473 100644
--- a/arch/x86/lib/fsp/Makefile
+++ b/arch/x86/lib/fsp/Makefile
@@ -4,3 +4,4 @@
 
 obj-y += fsp_common.o
 obj-y += fsp_dram.o
+obj-y += fsp_support.o
diff --git a/arch/x86/lib/fsp/fsp_support.c b/arch/x86/lib/fsp/fsp_support.c
new file mode 100644
index 0000000000..014de35e56
--- /dev/null
+++ b/arch/x86/lib/fsp/fsp_support.c
@@ -0,0 +1,176 @@
+// SPDX-License-Identifier: Intel
+/*
+ * Copyright (C) 2013, Intel Corporation
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <common.h>
+#include <asm/fsp1/fsp_support.h>
+#include <asm/post.h>
+
+u32 fsp_get_usable_lowmem_top(const void *hob_list)
+{
+	const struct hob_header *hdr;
+	struct hob_res_desc *res_desc;
+	phys_addr_t phys_start;
+	u32 top;
+#ifdef CONFIG_FSP_BROKEN_HOB
+	struct hob_mem_alloc *res_mem;
+	phys_addr_t mem_base = 0;
+#endif
+
+	/* Get the HOB list for processing */
+	hdr = hob_list;
+
+	/* * Collect memory ranges */
+	top = FSP_LOWMEM_BASE;
+	while (!end_of_hob(hdr)) {
+		if (hdr->type == HOB_TYPE_RES_DESC) {
+			res_desc = (struct hob_res_desc *)hdr;
+			if (res_desc->type == RES_SYS_MEM) {
+				phys_start = res_desc->phys_start;
+				/* Need memory above 1MB to be collected here */
+				if (phys_start >= FSP_LOWMEM_BASE &&
+				    phys_start < (phys_addr_t)FSP_HIGHMEM_BASE)
+					top += (u32)(res_desc->len);
+			}
+		}
+
+#ifdef CONFIG_FSP_BROKEN_HOB
+		/*
+		 * Find out the lowest memory base address allocated by FSP
+		 * for the boot service data
+		 */
+		if (hdr->type == HOB_TYPE_MEM_ALLOC) {
+			res_mem = (struct hob_mem_alloc *)hdr;
+			if (!mem_base)
+				mem_base = res_mem->mem_base;
+			if (res_mem->mem_base < mem_base)
+				mem_base = res_mem->mem_base;
+		}
+#endif
+
+		hdr = get_next_hob(hdr);
+	}
+
+#ifdef CONFIG_FSP_BROKEN_HOB
+	/*
+	 * Check whether the memory top address is below the FSP HOB list.
+	 * If not, use the lowest memory base address allocated by FSP as
+	 * the memory top address. This is to prevent U-Boot relocation
+	 * overwrites the important boot service data which is used by FSP,
+	 * otherwise the subsequent call to fsp_notify() will fail.
+	 */
+	if (top > (u32)hob_list) {
+		debug("Adjust memory top address due to a buggy FSP\n");
+		top = (u32)mem_base;
+	}
+#endif
+
+	return top;
+}
+
+u64 fsp_get_usable_highmem_top(const void *hob_list)
+{
+	const struct hob_header *hdr;
+	struct hob_res_desc *res_desc;
+	phys_addr_t phys_start;
+	u64 top;
+
+	/* Get the HOB list for processing */
+	hdr = hob_list;
+
+	/* Collect memory ranges */
+	top = FSP_HIGHMEM_BASE;
+	while (!end_of_hob(hdr)) {
+		if (hdr->type == HOB_TYPE_RES_DESC) {
+			res_desc = (struct hob_res_desc *)hdr;
+			if (res_desc->type == RES_SYS_MEM) {
+				phys_start = res_desc->phys_start;
+				/* Need memory above 4GB to be collected here */
+				if (phys_start >= (phys_addr_t)FSP_HIGHMEM_BASE)
+					top += (u32)(res_desc->len);
+			}
+		}
+		hdr = get_next_hob(hdr);
+	}
+
+	return top;
+}
+
+u64 fsp_get_reserved_mem_from_guid(const void *hob_list, u64 *len,
+				   const efi_guid_t *guid)
+{
+	const struct hob_header *hdr;
+	struct hob_res_desc *res_desc;
+
+	/* Get the HOB list for processing */
+	hdr = hob_list;
+
+	/* Collect memory ranges */
+	while (!end_of_hob(hdr)) {
+		if (hdr->type == HOB_TYPE_RES_DESC) {
+			res_desc = (struct hob_res_desc *)hdr;
+			if (res_desc->type == RES_MEM_RESERVED) {
+				if (!guidcmp(&res_desc->owner, guid)) {
+					if (len)
+						*len = (u32)(res_desc->len);
+
+					return (u64)(res_desc->phys_start);
+				}
+			}
+		}
+		hdr = get_next_hob(hdr);
+	}
+
+	return 0;
+}
+
+u32 fsp_get_fsp_reserved_mem(const void *hob_list, u32 *len)
+{
+	const efi_guid_t guid = FSP_HOB_RESOURCE_OWNER_FSP_GUID;
+	u64 length;
+	u32 base;
+
+	base = (u32)fsp_get_reserved_mem_from_guid(hob_list,
+			&length, &guid);
+	if (len && base)
+		*len = (u32)length;
+
+	return base;
+}
+
+u32 fsp_get_tseg_reserved_mem(const void *hob_list, u32 *len)
+{
+	const efi_guid_t guid = FSP_HOB_RESOURCE_OWNER_TSEG_GUID;
+	u64 length;
+	u32 base;
+
+	base = (u32)fsp_get_reserved_mem_from_guid(hob_list,
+			&length, &guid);
+	if (len && base)
+		*len = (u32)length;
+
+	return base;
+}
+
+void *fsp_get_nvs_data(const void *hob_list, u32 *len)
+{
+	const efi_guid_t guid = FSP_NON_VOLATILE_STORAGE_HOB_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 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 hob_get_guid_hob_data(hob_list, len, &guid);
+}