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/*
* Copyright (C) 2013, Intel Corporation
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
*
* SPDX-License-Identifier: Intel
*/
#ifndef __FSP_SUPPORT_H__
#define __FSP_SUPPORT_H__
#include "fsp_types.h"
#include "fsp_fv.h"
#include "fsp_ffs.h"
#include "fsp_api.h"
#include "fsp_hob.h"
#include "fsp_platform.h"
#include "fsp_infoheader.h"
#include "fsp_bootmode.h"
#include "fsp_vpd.h"
struct shared_data_t {
struct fsp_header_t *fsp_hdr;
u32 *stack_top;
struct upd_region_t fsp_upd;
};
void asm_continuation(void);
void fsp_init_done(void *hob_list);
/**
* FSP Continuation function
*
* @shared_data: Shared data base before stack migration
* @status: Always 0
* @hob_list: HOB list pointer
*
* @retval: Never returns
*/
void fsp_continue(struct shared_data_t *shared_data, u32 status,
void *hob_list);
/**
* Find FSP header offset in FSP image
*
* If this function is called before the a stack is established, special care
* must be taken. First, it cannot declare any local variable using stack.
* Only register variable can be used here. Secondly, some compiler version
* will add prolog or epilog code for the C function. If so the function call
* may not work before stack is ready. GCC 4.8.1 has been verified to be
* working for the following code.
*
* @retval: the offset of FSP header. If signature is invalid, returns 0.
*/
u32 find_fsp_header(void);
/**
* FSP initialization wrapper function.
*
* @stack_top: bootloader stack top address
* @boot_mode: boot mode defined in fsp_bootmode.h
* @nvs_buf: Non-volatile memory buffer pointer
*/
void fsp_init(u32 stack_top, u32 boot_mode, void *nvs_buf);
/**
* FSP notification wrapper function
*
* @fsp_hdr: Pointer to FSP information header
* @phase: FSP initialization phase defined in enum fsp_phase_t
*
* @retval: compatible status code with EFI_STATUS defined in PI spec
*/
u32 fsp_notify(struct fsp_header_t *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 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 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 get_fsp_reserved_mem_from_guid(const void *hob_list,
u64 *len, struct 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 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 get_tseg_reserved_mem(const void *hob_list, u32 *len);
/**
* 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.
*/
void *get_next_hob(u16 type, const void *hob_list);
/**
* 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.
*/
void *get_next_guid_hob(const struct efi_guid_t *guid, const void *hob_list);
/**
* 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 *get_guid_hob_data(const void *hob_list, u32 *len,
struct efi_guid_t *guid);
/**
* 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 *get_fsp_nvs_data(const void *hob_list, u32 *len);
/**
* This function retrieves Bootloader temporary stack buffer and size.
*
* @hob_list: A HOB list pointer.
* @len: A pointer to the bootloader temporary stack length.
* If the HOB is located, the length will be updated.
*
* @retval NULL: Failed to find the bootloader temporary stack HOB.
* @retval others: Bootloader temporary stackbuffer pointer.
*/
void *get_bootloader_tmp_mem(const void *hob_list, u32 *len);
/**
* This function overrides the default configurations in the UPD data region.
*
* @fsp_upd: A pointer to the upd_region_t data strcture
*
* @return: None
*/
void update_fsp_upd(struct upd_region_t *fsp_upd);
#endif
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