2 * Copyright (C) 2013, Intel Corporation
3 * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
5 * SPDX-License-Identifier: Intel
8 #ifndef __FSP_SUPPORT_H__
9 #define __FSP_SUPPORT_H__
11 #include "fsp_types.h"
16 #include "fsp_platform.h"
17 #include "fsp_infoheader.h"
18 #include "fsp_bootmode.h"
19 #include <asm/arch/fsp/fsp_vpd.h>
22 struct fsp_header *fsp_hdr;
25 struct upd_region fsp_upd;
28 #define FSP_LOWMEM_BASE 0x100000UL
29 #define FSP_HIGHMEM_BASE 0x100000000ULL
30 #define UPD_TERMINATOR 0x55AA
34 * FSP Continuation assembly helper routine
36 * This routine jumps to the C version of FSP continuation function
38 void asm_continuation(void);
41 * FSP initialization complete
43 * This is the function that indicates FSP initialization is complete and jumps
44 * back to the bootloader with HOB list pointer as the parameter.
46 * @hob_list: HOB list pointer
48 void fsp_init_done(void *hob_list);
51 * FSP Continuation function
54 * @hob_list: HOB list pointer
56 * @retval: Never returns
58 void fsp_continue(u32 status, void *hob_list);
61 * Find FSP header offset in FSP image
63 * @retval: the offset of FSP header. If signature is invalid, returns 0.
65 struct fsp_header *find_fsp_header(void);
68 * FSP initialization wrapper function.
70 * @stack_top: bootloader stack top address
71 * @boot_mode: boot mode defined in fsp_bootmode.h
72 * @nvs_buf: Non-volatile memory buffer pointer
74 void fsp_init(u32 stack_top, u32 boot_mode, void *nvs_buf);
77 * FSP notification wrapper function
79 * @fsp_hdr: Pointer to FSP information header
80 * @phase: FSP initialization phase defined in enum fsp_phase
82 * @retval: compatible status code with EFI_STATUS defined in PI spec
84 u32 fsp_notify(struct fsp_header *fsp_hdr, u32 phase);
87 * This function retrieves the top of usable low memory.
89 * @hob_list: A HOB list pointer.
91 * @retval: Usable low memory top.
93 u32 fsp_get_usable_lowmem_top(const void *hob_list);
96 * This function retrieves the top of usable high memory.
98 * @hob_list: A HOB list pointer.
100 * @retval: Usable high memory top.
102 u64 fsp_get_usable_highmem_top(const void *hob_list);
105 * This function retrieves a special reserved memory region.
107 * @hob_list: A HOB list pointer.
108 * @len: A pointer to the GUID HOB data buffer length.
109 * If the GUID HOB is located, the length will be updated.
110 * @guid: A pointer to the owner guild.
112 * @retval: Reserved region start address.
113 * 0 if this region does not exist.
115 u64 fsp_get_reserved_mem_from_guid(const void *hob_list,
116 u64 *len, struct efi_guid *guid);
119 * This function retrieves the FSP reserved normal memory.
121 * @hob_list: A HOB list pointer.
122 * @len: A pointer to the FSP reserved memory length buffer.
123 * If the GUID HOB is located, the length will be updated.
124 * @retval: FSP reserved memory base
125 * 0 if this region does not exist.
127 u32 fsp_get_fsp_reserved_mem(const void *hob_list, u32 *len);
130 * This function retrieves the TSEG reserved normal memory.
132 * @hob_list: A HOB list pointer.
133 * @len: A pointer to the TSEG reserved memory length buffer.
134 * If the GUID HOB is located, the length will be updated.
136 * @retval NULL: Failed to find the TSEG reserved memory.
137 * @retval others: TSEG reserved memory base.
139 u32 fsp_get_tseg_reserved_mem(const void *hob_list, u32 *len);
142 * Returns the next instance of a HOB type from the starting HOB.
144 * @type: HOB type to search
145 * @hob_list: A pointer to the HOB list
147 * @retval: A HOB object with matching type; Otherwise NULL.
149 const struct hob_header *fsp_get_next_hob(uint type, const void *hob_list);
152 * Returns the next instance of the matched GUID HOB from the starting HOB.
154 * @guid: GUID to search
155 * @hob_list: A pointer to the HOB list
157 * @retval: A HOB object with matching GUID; Otherwise NULL.
159 const struct hob_header *fsp_get_next_guid_hob(const struct efi_guid *guid,
160 const void *hob_list);
163 * This function retrieves a GUID HOB data buffer and size.
165 * @hob_list: A HOB list pointer.
166 * @len: A pointer to the GUID HOB data buffer length.
167 * If the GUID HOB is located, the length will be updated.
168 * @guid A pointer to HOB GUID.
170 * @retval NULL: Failed to find the GUID HOB.
171 * @retval others: GUID HOB data buffer pointer.
173 void *fsp_get_guid_hob_data(const void *hob_list, u32 *len,
174 struct efi_guid *guid);
177 * This function retrieves FSP Non-volatile Storage HOB buffer and size.
179 * @hob_list: A HOB list pointer.
180 * @len: A pointer to the NVS data buffer length.
181 * If the HOB is located, the length will be updated.
183 * @retval NULL: Failed to find the NVS HOB.
184 * @retval others: FSP NVS data buffer pointer.
186 void *fsp_get_nvs_data(const void *hob_list, u32 *len);
189 * This function retrieves Bootloader temporary stack buffer and size.
191 * @hob_list: A HOB list pointer.
192 * @len: A pointer to the bootloader temporary stack length.
193 * If the HOB is located, the length will be updated.
195 * @retval NULL: Failed to find the bootloader temporary stack HOB.
196 * @retval others: Bootloader temporary stackbuffer pointer.
198 void *fsp_get_bootloader_tmp_mem(const void *hob_list, u32 *len);
201 * This function overrides the default configurations in the UPD data region.
203 * @fsp_upd: A pointer to the upd_region data strcture
207 void update_fsp_upd(struct upd_region *fsp_upd);
210 * fsp_init_phase_pci() - Tell the FSP that we have completed PCI init
212 * @return 0 if OK, -EPERM if the FSP gave an error.
214 int fsp_init_phase_pci(void);