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