2 * Copyright (C) 2013, Intel Corporation
3 * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
5 * SPDX-License-Identifier: Intel
9 #include <asm/fsp/fsp_support.h>
15 * If the GUIDs are identical then true is returned.
16 * If there are any bit differences in the two GUIDs, then false is returned.
18 * @guid1: A pointer to a 128 bit GUID.
19 * @guid2: A pointer to a 128 bit GUID.
21 * @retval true: guid1 and guid2 are identical.
22 * @retval false: guid1 and guid2 are not identical.
24 static bool compare_guid(const struct efi_guid
*guid1
,
25 const struct efi_guid
*guid2
)
27 if (memcmp(guid1
, guid2
, sizeof(struct efi_guid
)) == 0)
33 struct fsp_header
*__attribute__((optimize("O0"))) find_fsp_header(void)
36 * This function may be called before the a stack is established,
37 * so special care must be taken. First, it cannot declare any local
38 * variable using stack. Only register variable can be used here.
39 * Secondly, some compiler version will add prolog or epilog code
40 * for the C function. If so the function call may not work before
43 * GCC 4.8.1 has been verified to be working for the following codes.
45 volatile register u8
*fsp
asm("eax");
47 /* Initalize the FSP base */
48 fsp
= (u8
*)CONFIG_FSP_ADDR
;
50 /* Check the FV signature, _FVH */
51 if (((struct fv_header
*)fsp
)->sign
== EFI_FVH_SIGNATURE
) {
52 /* Go to the end of the FV header and align the address */
53 fsp
+= ((struct fv_header
*)fsp
)->ext_hdr_off
;
54 fsp
+= ((struct fv_ext_header
*)fsp
)->ext_hdr_size
;
55 fsp
= (u8
*)(((u32
)fsp
+ 7) & 0xFFFFFFF8);
60 /* Check the FFS GUID */
62 ((struct ffs_file_header
*)fsp
)->name
.data1
== FSP_GUID_DATA1
&&
63 ((struct ffs_file_header
*)fsp
)->name
.data2
== FSP_GUID_DATA2
&&
64 ((struct ffs_file_header
*)fsp
)->name
.data3
== FSP_GUID_DATA3
&&
65 ((struct ffs_file_header
*)fsp
)->name
.data4
[0] == FSP_GUID_DATA4_0
&&
66 ((struct ffs_file_header
*)fsp
)->name
.data4
[1] == FSP_GUID_DATA4_1
&&
67 ((struct ffs_file_header
*)fsp
)->name
.data4
[2] == FSP_GUID_DATA4_2
&&
68 ((struct ffs_file_header
*)fsp
)->name
.data4
[3] == FSP_GUID_DATA4_3
&&
69 ((struct ffs_file_header
*)fsp
)->name
.data4
[4] == FSP_GUID_DATA4_4
&&
70 ((struct ffs_file_header
*)fsp
)->name
.data4
[5] == FSP_GUID_DATA4_5
&&
71 ((struct ffs_file_header
*)fsp
)->name
.data4
[6] == FSP_GUID_DATA4_6
&&
72 ((struct ffs_file_header
*)fsp
)->name
.data4
[7] == FSP_GUID_DATA4_7
) {
73 /* Add the FFS header size to find the raw section header */
74 fsp
+= sizeof(struct ffs_file_header
);
80 ((struct raw_section
*)fsp
)->type
== EFI_SECTION_RAW
) {
81 /* Add the raw section header size to find the FSP header */
82 fsp
+= sizeof(struct raw_section
);
87 return (struct fsp_header
*)fsp
;
90 void fsp_continue(u32 status
, void *hob_list
)
96 /* The boot loader main function entry */
97 fsp_init_done(hob_list
);
100 void fsp_init(u32 stack_top
, u32 boot_mode
, void *nvs_buf
)
102 struct fsp_config_data config_data
;
104 struct fsp_init_params params
;
105 struct fspinit_rtbuf rt_buf
;
106 struct fsp_header
*fsp_hdr
;
107 struct fsp_init_params
*params_ptr
;
108 #ifdef CONFIG_FSP_USE_UPD
109 struct vpd_region
*fsp_vpd
;
110 struct upd_region
*fsp_upd
;
113 #ifdef CONFIG_DEBUG_UART
114 setup_internal_uart(1);
117 fsp_hdr
= find_fsp_header();
118 if (fsp_hdr
== NULL
) {
119 /* No valid FSP info header was found */
120 panic("Invalid FSP header");
123 config_data
.common
.fsp_hdr
= fsp_hdr
;
124 config_data
.common
.stack_top
= stack_top
;
125 config_data
.common
.boot_mode
= boot_mode
;
127 #ifdef CONFIG_FSP_USE_UPD
128 /* Get VPD region start */
129 fsp_vpd
= (struct vpd_region
*)(fsp_hdr
->img_base
+
130 fsp_hdr
->cfg_region_off
);
132 /* Verify the VPD data region is valid */
133 assert(fsp_vpd
->sign
== VPD_IMAGE_ID
);
135 fsp_upd
= &config_data
.fsp_upd
;
137 /* Copy default data from Flash */
138 memcpy(fsp_upd
, (void *)(fsp_hdr
->img_base
+ fsp_vpd
->upd_offset
),
139 sizeof(struct upd_region
));
141 /* Verify the UPD data region is valid */
142 assert(fsp_upd
->terminator
== UPD_TERMINATOR
);
145 memset(&rt_buf
, 0, sizeof(struct fspinit_rtbuf
));
147 /* Override any configuration if required */
148 update_fsp_configs(&config_data
, &rt_buf
);
150 memset(¶ms
, 0, sizeof(struct fsp_init_params
));
151 params
.nvs_buf
= nvs_buf
;
152 params
.rt_buf
= (struct fspinit_rtbuf
*)&rt_buf
;
153 params
.continuation
= (fsp_continuation_f
)asm_continuation
;
155 init
= (fsp_init_f
)(fsp_hdr
->img_base
+ fsp_hdr
->fsp_init
);
156 params_ptr
= ¶ms
;
158 post_code(POST_PRE_MRC
);
160 /* Load GDT for FSP */
164 * Use ASM code to ensure the register value in EAX & EDX
165 * will be passed into fsp_continue
170 ".global asm_continuation;"
172 "movl 4(%%esp), %%eax;" /* status */
173 "movl 8(%%esp), %%edx;" /* hob_list */
175 : : "m"(params_ptr
), "a"(init
)
179 * Should never get here.
180 * Control will continue from fsp_continue.
181 * This line below is to prevent the compiler from optimizing
182 * structure intialization.
189 u32
fsp_notify(struct fsp_header
*fsp_hdr
, u32 phase
)
192 struct fsp_notify_params params
;
193 struct fsp_notify_params
*params_ptr
;
197 fsp_hdr
= (struct fsp_header
*)find_fsp_header();
199 if (fsp_hdr
== NULL
) {
200 /* No valid FSP info header */
201 panic("Invalid FSP header");
204 notify
= (fsp_notify_f
)(fsp_hdr
->img_base
+ fsp_hdr
->fsp_notify
);
205 params
.phase
= phase
;
206 params_ptr
= ¶ms
;
209 * Use ASM code to ensure correct parameter is on the stack for
210 * FspNotify as U-Boot is using different ABI from FSP
213 "pushl %1;" /* push notify phase */
214 "call *%%eax;" /* call FspNotify */
215 "addl $4, %%esp;" /* clean up the stack */
216 : "=a"(status
) : "m"(params_ptr
), "a"(notify
), "m"(*params_ptr
)
222 u32
fsp_get_usable_lowmem_top(const void *hob_list
)
224 const struct hob_header
*hdr
;
225 struct hob_res_desc
*res_desc
;
226 phys_addr_t phys_start
;
229 /* Get the HOB list for processing */
232 /* * Collect memory ranges */
233 top
= FSP_LOWMEM_BASE
;
234 while (!end_of_hob(hdr
)) {
235 if (hdr
->type
== HOB_TYPE_RES_DESC
) {
236 res_desc
= (struct hob_res_desc
*)hdr
;
237 if (res_desc
->type
== RES_SYS_MEM
) {
238 phys_start
= res_desc
->phys_start
;
239 /* Need memory above 1MB to be collected here */
240 if (phys_start
>= FSP_LOWMEM_BASE
&&
241 phys_start
< (phys_addr_t
)FSP_HIGHMEM_BASE
)
242 top
+= (u32
)(res_desc
->len
);
245 hdr
= get_next_hob(hdr
);
251 u64
fsp_get_usable_highmem_top(const void *hob_list
)
253 const struct hob_header
*hdr
;
254 struct hob_res_desc
*res_desc
;
255 phys_addr_t phys_start
;
258 /* Get the HOB list for processing */
261 /* Collect memory ranges */
262 top
= FSP_HIGHMEM_BASE
;
263 while (!end_of_hob(hdr
)) {
264 if (hdr
->type
== HOB_TYPE_RES_DESC
) {
265 res_desc
= (struct hob_res_desc
*)hdr
;
266 if (res_desc
->type
== RES_SYS_MEM
) {
267 phys_start
= res_desc
->phys_start
;
268 /* Need memory above 4GB to be collected here */
269 if (phys_start
>= (phys_addr_t
)FSP_HIGHMEM_BASE
)
270 top
+= (u32
)(res_desc
->len
);
273 hdr
= get_next_hob(hdr
);
279 u64
fsp_get_reserved_mem_from_guid(const void *hob_list
, u64
*len
,
280 struct efi_guid
*guid
)
282 const struct hob_header
*hdr
;
283 struct hob_res_desc
*res_desc
;
285 /* Get the HOB list for processing */
288 /* Collect memory ranges */
289 while (!end_of_hob(hdr
)) {
290 if (hdr
->type
== HOB_TYPE_RES_DESC
) {
291 res_desc
= (struct hob_res_desc
*)hdr
;
292 if (res_desc
->type
== RES_MEM_RESERVED
) {
293 if (compare_guid(&res_desc
->owner
, guid
)) {
295 *len
= (u32
)(res_desc
->len
);
297 return (u64
)(res_desc
->phys_start
);
301 hdr
= get_next_hob(hdr
);
307 u32
fsp_get_fsp_reserved_mem(const void *hob_list
, u32
*len
)
309 const struct efi_guid guid
= FSP_HOB_RESOURCE_OWNER_FSP_GUID
;
313 base
= (u32
)fsp_get_reserved_mem_from_guid(hob_list
,
314 &length
, (struct efi_guid
*)&guid
);
315 if ((len
!= 0) && (base
!= 0))
321 u32
fsp_get_tseg_reserved_mem(const void *hob_list
, u32
*len
)
323 const struct efi_guid guid
= FSP_HOB_RESOURCE_OWNER_TSEG_GUID
;
327 base
= (u32
)fsp_get_reserved_mem_from_guid(hob_list
,
328 &length
, (struct efi_guid
*)&guid
);
329 if ((len
!= 0) && (base
!= 0))
335 const struct hob_header
*fsp_get_next_hob(uint type
, const void *hob_list
)
337 const struct hob_header
*hdr
;
341 /* Parse the HOB list until end of list or matching type is found */
342 while (!end_of_hob(hdr
)) {
343 if (hdr
->type
== type
)
346 hdr
= get_next_hob(hdr
);
352 const struct hob_header
*fsp_get_next_guid_hob(const struct efi_guid
*guid
,
353 const void *hob_list
)
355 const struct hob_header
*hdr
;
356 struct hob_guid
*guid_hob
;
359 while ((hdr
= fsp_get_next_hob(HOB_TYPE_GUID_EXT
,
361 guid_hob
= (struct hob_guid
*)hdr
;
362 if (compare_guid(guid
, &(guid_hob
->name
)))
364 hdr
= get_next_hob(hdr
);
370 void *fsp_get_guid_hob_data(const void *hob_list
, u32
*len
,
371 struct efi_guid
*guid
)
373 const struct hob_header
*guid_hob
;
375 guid_hob
= fsp_get_next_guid_hob(guid
, hob_list
);
376 if (guid_hob
== NULL
) {
380 *len
= get_guid_hob_data_size(guid_hob
);
382 return get_guid_hob_data(guid_hob
);
386 void *fsp_get_nvs_data(const void *hob_list
, u32
*len
)
388 const struct efi_guid guid
= FSP_NON_VOLATILE_STORAGE_HOB_GUID
;
390 return fsp_get_guid_hob_data(hob_list
, len
, (struct efi_guid
*)&guid
);
393 void *fsp_get_bootloader_tmp_mem(const void *hob_list
, u32
*len
)
395 const struct efi_guid guid
= FSP_BOOTLOADER_TEMP_MEM_HOB_GUID
;
397 return fsp_get_guid_hob_data(hob_list
, len
, (struct efi_guid
*)&guid
);