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/* SPDX-License-Identifier: Intel */
/*
* Copyright (C) 2013, Intel Corporation
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
*/
#ifndef __FSP_SUPPORT_H__
#define __FSP_SUPPORT_H__
#include <asm/fsp/fsp_bootmode.h>
#include <asm/fsp/fsp_fv.h>
#include <asm/fsp/fsp_hob.h>
#include <asm/fsp/fsp_infoheader.h>
#include <asm/fsp/fsp_types.h>
#include <asm/fsp_arch.h>
#include <asm/fsp/fsp_azalia.h>
#define FSP_LOWMEM_BASE 0x100000UL
#define FSP_HIGHMEM_BASE 0x100000000ULL
#define UPD_TERMINATOR 0x55AA
/**
* Find FSP header offset in FSP image
*
* @retval: the offset of FSP header. If signature is invalid, returns 0.
*/
struct fsp_header *fsp_find_header(void);
/**
* FSP notification wrapper function
*
* @fsp_hdr: Pointer to FSP information header
* @phase: FSP initialization phase defined in enum fsp_phase
*
* @retval: compatible status code with EFI_STATUS defined in PI spec
*/
u32 fsp_notify(struct fsp_header *fsp_hdr, u32 phase);
/**
* This function retrieves the top of usable low memory.
*
* @hob_list: A HOB list pointer.
*
* @retval: Usable low memory top.
*/
u32 fsp_get_usable_lowmem_top(const void *hob_list);
/**
* This function retrieves the top of usable high memory.
*
* @hob_list: A HOB list pointer.
*
* @retval: Usable high memory top.
*/
u64 fsp_get_usable_highmem_top(const void *hob_list);
/**
* This function retrieves a special reserved memory region.
*
* @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 the owner guild.
*
* @retval: Reserved region start address.
* 0 if this region does not exist.
*/
u64 fsp_get_reserved_mem_from_guid(const void *hob_list,
u64 *len, const efi_guid_t *guid);
/**
* This function retrieves the FSP reserved normal memory.
*
* @hob_list: A HOB list pointer.
* @len: A pointer to the FSP reserved memory length buffer.
* If the GUID HOB is located, the length will be updated.
* @retval: FSP reserved memory base
* 0 if this region does not exist.
*/
u32 fsp_get_fsp_reserved_mem(const void *hob_list, u32 *len);
/**
* This function retrieves the TSEG reserved normal memory.
*
* @hob_list: A HOB list pointer.
* @len: A pointer to the TSEG reserved memory length buffer.
* If the GUID HOB is located, the length will be updated.
*
* @retval NULL: Failed to find the TSEG reserved memory.
* @retval others: TSEG reserved memory base.
*/
u32 fsp_get_tseg_reserved_mem(const void *hob_list, u32 *len);
/**
* This function retrieves FSP Non-volatile Storage HOB buffer and size.
*
* @hob_list: A HOB list pointer.
* @len: A pointer to the NVS data buffer length.
* If the HOB is located, the length will be updated.
*
* @retval NULL: Failed to find the NVS HOB.
* @retval others: FSP NVS data buffer pointer.
*/
void *fsp_get_nvs_data(const void *hob_list, u32 *len);
/**
* This function retrieves graphics information.
*
* @hob_list: A HOB list pointer.
* @len: A pointer to the graphics info HOB length.
* If the HOB is located, the length will be updated.
*
* @retval NULL: Failed to find the graphics info HOB.
* @retval others: A pointer to struct hob_graphics_info.
*/
void *fsp_get_graphics_info(const void *hob_list, u32 *len);
/**
* fsp_init_phase_pci() - Tell the FSP that we have completed PCI init
*
* @return 0 if OK, -EPERM if the FSP gave an error.
*/
int fsp_init_phase_pci(void);
#endif
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