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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
/**
* fsp_find_header() - Find FSP header offset in FSP image
*
* @return the offset of FSP header. If signature is invalid, returns 0.
*/
struct fsp_header *fsp_find_header(void);
/**
* fsp_notify() - FSP notification wrapper function
*
* @fsp_hdr: Pointer to FSP information header
* @phase: FSP initialization phase defined in enum fsp_phase
*
* @return compatible status code with EFI_STATUS defined in PI spec
*/
u32 fsp_notify(struct fsp_header *fsp_hdr, u32 phase);
/**
* fsp_get_usable_lowmem_top() - retrieves the top of usable low memory
*
* @hob_list: A HOB list pointer.
*
* @return Usable low memory top.
*/
u32 fsp_get_usable_lowmem_top(const void *hob_list);
/**
* fsp_get_usable_highmem_top() - retrieves the top of usable high memory
*
* @hob_list: A HOB list pointer.
*
* @return Usable high memory top.
*/
u64 fsp_get_usable_highmem_top(const void *hob_list);
/**
* fsp_get_reserved_mem_from_guid() - 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.
*
* @return 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);
/**
* fsp_get_fsp_reserved_mem() - 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.
* @return FSP reserved memory base
* 0 if this region does not exist.
*/
u32 fsp_get_fsp_reserved_mem(const void *hob_list, u32 *len);
/**
* fsp_get_tseg_reserved_mem() - 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.
*
* @return NULL: Failed to find the TSEG reserved memory.
* @return others: TSEG reserved memory base.
*/
u32 fsp_get_tseg_reserved_mem(const void *hob_list, u32 *len);
/**
* fsp_get_nvs_data() - 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.
*
* @return NULL: Failed to find the NVS HOB.
* @return others: FSP NVS data buffer pointer.
*/
void *fsp_get_nvs_data(const void *hob_list, u32 *len);
/**
* fsp_get_var_nvs_data() - get FSP variable Non-volatile Storage HOB buffer
*
* @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.
*
* @return NULL: Failed to find the NVS HOB.
* @return others: FSP NVS data buffer pointer.
*/
void *fsp_get_var_nvs_data(const void *hob_list, u32 *len);
/**
* fsp_get_graphics_info() - 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.
*
* @return NULL: Failed to find the graphics info HOB.
* @return 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);
/**
* fsp_scan_for_ram_size() - Scan the HOB list to find the RAM size
*
* This sets gd->ram_size based on what it finds.
*
* @return 0 if OK, -ve on error
*/
int fsp_scan_for_ram_size(void);
/**
* fsp_prepare_mrc_cache() - Find the DRAM training data from the MRC cache
*
* @return pointer to data, or NULL if no cache or no data found in the cache
*/
void *fsp_prepare_mrc_cache(void);
/**
* fsp_notify() - FSP notification wrapper function
*
* @fsp_hdr: Pointer to FSP information header
* @phase: FSP initialization phase defined in enum fsp_phase
*
* @return compatible status code with EFI_STATUS defined in PI spec
*/
u32 fsp_notify(struct fsp_header *fsp_hdr, u32 phase);
#endif
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