+// SPDX-License-Identifier: Intel
/*
* Copyright (C) 2013, Intel Corporation
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier: Intel
*/
#include <common.h>
+#include <log.h>
#include <asm/fsp/fsp_support.h>
#include <asm/post.h>
-/**
- * Compares two GUIDs
- *
- * If the GUIDs are identical then true is returned.
- * If there are any bit differences in the two GUIDs, then false is returned.
- *
- * @guid1: A pointer to a 128 bit GUID.
- * @guid2: A pointer to a 128 bit GUID.
- *
- * @retval true: guid1 and guid2 are identical.
- * @retval false: guid1 and guid2 are not identical.
- */
-static bool compare_guid(const struct efi_guid *guid1,
- const struct efi_guid *guid2)
-{
- if (memcmp(guid1, guid2, sizeof(struct efi_guid)) == 0)
- return true;
- else
- return false;
-}
-
-struct fsp_header *__attribute__((optimize("O0"))) find_fsp_header(void)
-{
- /*
- * This function may be called before the a stack is established,
- * so 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 codes.
- */
- volatile register u8 *fsp asm("eax");
-
- /* Initalize the FSP base */
- fsp = (u8 *)CONFIG_FSP_ADDR;
-
- /* Check the FV signature, _FVH */
- if (((struct fv_header *)fsp)->sign == EFI_FVH_SIGNATURE) {
- /* Go to the end of the FV header and align the address */
- fsp += ((struct fv_header *)fsp)->ext_hdr_off;
- fsp += ((struct fv_ext_header *)fsp)->ext_hdr_size;
- fsp = (u8 *)(((u32)fsp + 7) & 0xFFFFFFF8);
- } else {
- fsp = 0;
- }
-
- /* Check the FFS GUID */
- if (fsp &&
- ((struct ffs_file_header *)fsp)->name.data1 == FSP_GUID_DATA1 &&
- ((struct ffs_file_header *)fsp)->name.data2 == FSP_GUID_DATA2 &&
- ((struct ffs_file_header *)fsp)->name.data3 == FSP_GUID_DATA3 &&
- ((struct ffs_file_header *)fsp)->name.data4[0] == FSP_GUID_DATA4_0 &&
- ((struct ffs_file_header *)fsp)->name.data4[1] == FSP_GUID_DATA4_1 &&
- ((struct ffs_file_header *)fsp)->name.data4[2] == FSP_GUID_DATA4_2 &&
- ((struct ffs_file_header *)fsp)->name.data4[3] == FSP_GUID_DATA4_3 &&
- ((struct ffs_file_header *)fsp)->name.data4[4] == FSP_GUID_DATA4_4 &&
- ((struct ffs_file_header *)fsp)->name.data4[5] == FSP_GUID_DATA4_5 &&
- ((struct ffs_file_header *)fsp)->name.data4[6] == FSP_GUID_DATA4_6 &&
- ((struct ffs_file_header *)fsp)->name.data4[7] == FSP_GUID_DATA4_7) {
- /* Add the FFS header size to find the raw section header */
- fsp += sizeof(struct ffs_file_header);
- } else {
- fsp = 0;
- }
-
- if (fsp &&
- ((struct raw_section *)fsp)->type == EFI_SECTION_RAW) {
- /* Add the raw section header size to find the FSP header */
- fsp += sizeof(struct raw_section);
- } else {
- fsp = 0;
- }
-
- return (struct fsp_header *)fsp;
-}
-
-void fsp_continue(struct shared_data *shared_data, u32 status, void *hob_list)
-{
- u32 stack_len;
- u32 stack_base;
- u32 stack_top;
-
- post_code(POST_MRC);
-
- assert(status == 0);
-
- /* Get the migrated stack in normal memory */
- stack_base = (u32)fsp_get_bootloader_tmp_mem(hob_list, &stack_len);
- assert(stack_base != 0);
- stack_top = stack_base + stack_len - sizeof(u32);
-
- /*
- * Old stack base is stored at the very end of the stack top,
- * use it to calculate the migrated shared data base
- */
- shared_data = (struct shared_data *)(stack_base +
- ((u32)shared_data - *(u32 *)stack_top));
-
- /* The boot loader main function entry */
- fsp_init_done(hob_list);
-}
-
-void fsp_init(u32 stack_top, u32 boot_mode, void *nvs_buf)
-{
- struct shared_data shared_data;
- fsp_init_f init;
- struct fsp_init_params params;
- struct fspinit_rtbuf rt_buf;
- struct vpd_region *fsp_vpd;
- struct fsp_header *fsp_hdr;
- struct fsp_init_params *params_ptr;
- struct upd_region *fsp_upd;
-
-#ifdef CONFIG_DEBUG_UART
- setup_early_uart();
-#endif
-
- fsp_hdr = find_fsp_header();
- if (fsp_hdr == NULL) {
- /* No valid FSP info header was found */
- panic("Invalid FSP header");
- }
-
- fsp_upd = &shared_data.fsp_upd;
- memset(&rt_buf, 0, sizeof(struct fspinit_rtbuf));
-
- /* Reserve a gap in stack top */
- rt_buf.common.stack_top = (u32 *)stack_top - 32;
- rt_buf.common.boot_mode = boot_mode;
- rt_buf.common.upd_data = fsp_upd;
-
- /* Get VPD region start */
- fsp_vpd = (struct vpd_region *)(fsp_hdr->img_base +
- fsp_hdr->cfg_region_off);
-
- /* Verify the VPD data region is valid */
- assert(fsp_vpd->sign == VPD_IMAGE_ID);
-
- /* Copy default data from Flash */
- memcpy(fsp_upd, (void *)(fsp_hdr->img_base + fsp_vpd->upd_offset),
- sizeof(struct upd_region));
-
- /* Verify the UPD data region is valid */
- assert(fsp_upd->terminator == UPD_TERMINATOR);
-
- /* Override any UPD setting if required */
- update_fsp_upd(fsp_upd);
-
- memset(¶ms, 0, sizeof(struct fsp_init_params));
- params.nvs_buf = nvs_buf;
- params.rt_buf = (struct fspinit_rtbuf *)&rt_buf;
- params.continuation = (fsp_continuation_f)asm_continuation;
-
- init = (fsp_init_f)(fsp_hdr->img_base + fsp_hdr->fsp_init);
- params_ptr = ¶ms;
-
- shared_data.fsp_hdr = fsp_hdr;
- shared_data.stack_top = (u32 *)stack_top;
-
- post_code(POST_PRE_MRC);
-
- /* Load GDT for FSP */
- setup_fsp_gdt();
-
- /*
- * Use ASM code to ensure the register value in EAX & ECX
- * will be passed into BlContinuationFunc
- */
- asm volatile (
- "pushl %0;"
- "call *%%eax;"
- ".global asm_continuation;"
- "asm_continuation:;"
- "movl %%ebx, %%eax;" /* shared_data */
- "movl 4(%%esp), %%edx;" /* status */
- "movl 8(%%esp), %%ecx;" /* hob_list */
- "jmp fsp_continue;"
- : : "m"(params_ptr), "a"(init), "b"(&shared_data)
- );
-
- /*
- * Should never get here.
- * Control will continue from fsp_continue.
- * This line below is to prevent the compiler from optimizing
- * structure intialization.
- *
- * DO NOT REMOVE!
- */
- init(¶ms);
-}
-
-u32 fsp_notify(struct fsp_header *fsp_hdr, u32 phase)
-{
- fsp_notify_f notify;
- struct fsp_notify_params params;
- struct fsp_notify_params *params_ptr;
- u32 status;
-
- if (!fsp_hdr)
- fsp_hdr = (struct fsp_header *)find_fsp_header();
-
- if (fsp_hdr == NULL) {
- /* No valid FSP info header */
- panic("Invalid FSP header");
- }
-
- notify = (fsp_notify_f)(fsp_hdr->img_base + fsp_hdr->fsp_notify);
- params.phase = phase;
- params_ptr = ¶ms;
-
- /*
- * Use ASM code to ensure correct parameter is on the stack for
- * FspNotify as U-Boot is using different ABI from FSP
- */
- asm volatile (
- "pushl %1;" /* push notify phase */
- "call *%%eax;" /* call FspNotify */
- "addl $4, %%esp;" /* clean up the stack */
- : "=a"(status) : "m"(params_ptr), "a"(notify), "m"(*params_ptr)
- );
-
- return status;
-}
-
u32 fsp_get_usable_lowmem_top(const void *hob_list)
{
const struct hob_header *hdr;
struct hob_res_desc *res_desc;
phys_addr_t phys_start;
u32 top;
+#ifdef CONFIG_FSP_BROKEN_HOB
+ struct hob_mem_alloc *res_mem;
+ phys_addr_t mem_base = 0;
+#endif
/* Get the HOB list for processing */
hdr = hob_list;
top += (u32)(res_desc->len);
}
}
+
+#ifdef CONFIG_FSP_BROKEN_HOB
+ /*
+ * Find out the lowest memory base address allocated by FSP
+ * for the boot service data
+ */
+ if (hdr->type == HOB_TYPE_MEM_ALLOC) {
+ res_mem = (struct hob_mem_alloc *)hdr;
+ if (!mem_base)
+ mem_base = res_mem->mem_base;
+ if (res_mem->mem_base < mem_base)
+ mem_base = res_mem->mem_base;
+ }
+#endif
+
hdr = get_next_hob(hdr);
}
+#ifdef CONFIG_FSP_BROKEN_HOB
+ /*
+ * Check whether the memory top address is below the FSP HOB list.
+ * If not, use the lowest memory base address allocated by FSP as
+ * the memory top address. This is to prevent U-Boot relocation
+ * overwrites the important boot service data which is used by FSP,
+ * otherwise the subsequent call to fsp_notify() will fail.
+ */
+ if (top > (u32)hob_list) {
+ debug("Adjust memory top address due to a buggy FSP\n");
+ top = (u32)mem_base;
+ }
+#endif
+
return top;
}
}
u64 fsp_get_reserved_mem_from_guid(const void *hob_list, u64 *len,
- struct efi_guid *guid)
+ const efi_guid_t *guid)
{
const struct hob_header *hdr;
struct hob_res_desc *res_desc;
if (hdr->type == HOB_TYPE_RES_DESC) {
res_desc = (struct hob_res_desc *)hdr;
if (res_desc->type == RES_MEM_RESERVED) {
- if (compare_guid(&res_desc->owner, guid)) {
+ if (!guidcmp(&res_desc->owner, guid)) {
if (len)
*len = (u32)(res_desc->len);
u32 fsp_get_fsp_reserved_mem(const void *hob_list, u32 *len)
{
- const struct efi_guid guid = FSP_HOB_RESOURCE_OWNER_FSP_GUID;
+ const efi_guid_t guid = FSP_HOB_RESOURCE_OWNER_FSP_GUID;
u64 length;
u32 base;
base = (u32)fsp_get_reserved_mem_from_guid(hob_list,
- &length, (struct efi_guid *)&guid);
- if ((len != 0) && (base != 0))
+ &length, &guid);
+ if (len && base)
*len = (u32)length;
return base;
u32 fsp_get_tseg_reserved_mem(const void *hob_list, u32 *len)
{
- const struct efi_guid guid = FSP_HOB_RESOURCE_OWNER_TSEG_GUID;
+ const efi_guid_t guid = FSP_HOB_RESOURCE_OWNER_TSEG_GUID;
u64 length;
u32 base;
base = (u32)fsp_get_reserved_mem_from_guid(hob_list,
- &length, (struct efi_guid *)&guid);
- if ((len != 0) && (base != 0))
+ &length, &guid);
+ if (len && base)
*len = (u32)length;
return base;
}
-const struct hob_header *fsp_get_next_hob(uint type, const void *hob_list)
-{
- const struct hob_header *hdr;
-
- hdr = hob_list;
-
- /* Parse the HOB list until end of list or matching type is found */
- while (!end_of_hob(hdr)) {
- if (hdr->type == type)
- return hdr;
-
- hdr = get_next_hob(hdr);
- }
-
- return NULL;
-}
-
-const struct hob_header *fsp_get_next_guid_hob(const struct efi_guid *guid,
- const void *hob_list)
+void *fsp_get_nvs_data(const void *hob_list, u32 *len)
{
- const struct hob_header *hdr;
- struct hob_guid *guid_hob;
-
- hdr = hob_list;
- while ((hdr = fsp_get_next_hob(HOB_TYPE_GUID_EXT,
- hdr)) != NULL) {
- guid_hob = (struct hob_guid *)hdr;
- if (compare_guid(guid, &(guid_hob->name)))
- break;
- hdr = get_next_hob(hdr);
- }
+ const efi_guid_t guid = FSP_NON_VOLATILE_STORAGE_HOB_GUID;
- return hdr;
+ return hob_get_guid_hob_data(hob_list, len, &guid);
}
-void *fsp_get_guid_hob_data(const void *hob_list, u32 *len,
- struct efi_guid *guid)
+void *fsp_get_var_nvs_data(const void *hob_list, u32 *len)
{
- const struct hob_header *guid_hob;
-
- guid_hob = fsp_get_next_guid_hob(guid, hob_list);
- if (guid_hob == NULL) {
- return NULL;
- } else {
- if (len)
- *len = get_guid_hob_data_size(guid_hob);
+ const efi_guid_t guid = FSP_VARIABLE_NV_DATA_HOB_GUID;
- return get_guid_hob_data(guid_hob);
- }
+ return hob_get_guid_hob_data(hob_list, len, &guid);
}
-void *fsp_get_nvs_data(const void *hob_list, u32 *len)
+void *fsp_get_bootloader_tmp_mem(const void *hob_list, u32 *len)
{
- const struct efi_guid guid = FSP_NON_VOLATILE_STORAGE_HOB_GUID;
+ const efi_guid_t guid = FSP_BOOTLOADER_TEMP_MEM_HOB_GUID;
- return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid);
+ return hob_get_guid_hob_data(hob_list, len, &guid);
}
-void *fsp_get_bootloader_tmp_mem(const void *hob_list, u32 *len)
+void *fsp_get_graphics_info(const void *hob_list, u32 *len)
{
- const struct efi_guid guid = FSP_BOOTLOADER_TEMP_MEM_HOB_GUID;
+ const efi_guid_t guid = FSP_GRAPHICS_INFO_HOB_GUID;
- return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid);
+ return hob_get_guid_hob_data(hob_list, len, &guid);
}
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