| /* |
| * Copyright (C) 2013, Intel Corporation |
| * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> |
| * |
| * SPDX-License-Identifier: Intel |
| */ |
| |
| #include <common.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(u32 status, void *hob_list) |
| { |
| post_code(POST_MRC); |
| |
| assert(status == 0); |
| |
| /* The boot loader main function entry */ |
| fsp_init_done(hob_list); |
| } |
| |
| void fsp_init(u32 stack_top, u32 boot_mode, void *nvs_buf) |
| { |
| struct fsp_config_data config_data; |
| fsp_init_f init; |
| struct fsp_init_params params; |
| struct fspinit_rtbuf rt_buf; |
| struct fsp_header *fsp_hdr; |
| struct fsp_init_params *params_ptr; |
| #ifdef CONFIG_FSP_USE_UPD |
| struct vpd_region *fsp_vpd; |
| struct upd_region *fsp_upd; |
| #endif |
| |
| fsp_hdr = find_fsp_header(); |
| if (fsp_hdr == NULL) { |
| /* No valid FSP info header was found */ |
| panic("Invalid FSP header"); |
| } |
| |
| config_data.common.fsp_hdr = fsp_hdr; |
| config_data.common.stack_top = stack_top; |
| config_data.common.boot_mode = boot_mode; |
| |
| #ifdef CONFIG_FSP_USE_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); |
| |
| fsp_upd = &config_data.fsp_upd; |
| |
| /* 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); |
| #endif |
| |
| memset(&rt_buf, 0, sizeof(struct fspinit_rtbuf)); |
| |
| /* Override any configuration if required */ |
| update_fsp_configs(&config_data, &rt_buf); |
| |
| 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; |
| |
| post_code(POST_PRE_MRC); |
| |
| /* Load GDT for FSP */ |
| setup_fsp_gdt(); |
| |
| /* |
| * Use ASM code to ensure the register value in EAX & EDX |
| * will be passed into fsp_continue |
| */ |
| asm volatile ( |
| "pushl %0;" |
| "call *%%eax;" |
| ".global asm_continuation;" |
| "asm_continuation:;" |
| "movl 4(%%esp), %%eax;" /* status */ |
| "movl 8(%%esp), %%edx;" /* hob_list */ |
| "jmp fsp_continue;" |
| : : "m"(params_ptr), "a"(init) |
| ); |
| |
| /* |
| * 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; |
| |
| /* * Collect memory ranges */ |
| top = FSP_LOWMEM_BASE; |
| while (!end_of_hob(hdr)) { |
| if (hdr->type == HOB_TYPE_RES_DESC) { |
| res_desc = (struct hob_res_desc *)hdr; |
| if (res_desc->type == RES_SYS_MEM) { |
| phys_start = res_desc->phys_start; |
| /* Need memory above 1MB to be collected here */ |
| if (phys_start >= FSP_LOWMEM_BASE && |
| phys_start < (phys_addr_t)FSP_HIGHMEM_BASE) |
| 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_usable_highmem_top(const void *hob_list) |
| { |
| const struct hob_header *hdr; |
| struct hob_res_desc *res_desc; |
| phys_addr_t phys_start; |
| u64 top; |
| |
| /* Get the HOB list for processing */ |
| hdr = hob_list; |
| |
| /* Collect memory ranges */ |
| top = FSP_HIGHMEM_BASE; |
| while (!end_of_hob(hdr)) { |
| if (hdr->type == HOB_TYPE_RES_DESC) { |
| res_desc = (struct hob_res_desc *)hdr; |
| if (res_desc->type == RES_SYS_MEM) { |
| phys_start = res_desc->phys_start; |
| /* Need memory above 4GB to be collected here */ |
| if (phys_start >= (phys_addr_t)FSP_HIGHMEM_BASE) |
| top += (u32)(res_desc->len); |
| } |
| } |
| hdr = get_next_hob(hdr); |
| } |
| |
| return top; |
| } |
| |
| u64 fsp_get_reserved_mem_from_guid(const void *hob_list, u64 *len, |
| struct efi_guid *guid) |
| { |
| const struct hob_header *hdr; |
| struct hob_res_desc *res_desc; |
| |
| /* Get the HOB list for processing */ |
| hdr = hob_list; |
| |
| /* Collect memory ranges */ |
| while (!end_of_hob(hdr)) { |
| 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 (len) |
| *len = (u32)(res_desc->len); |
| |
| return (u64)(res_desc->phys_start); |
| } |
| } |
| } |
| hdr = get_next_hob(hdr); |
| } |
| |
| return 0; |
| } |
| |
| u32 fsp_get_fsp_reserved_mem(const void *hob_list, u32 *len) |
| { |
| const struct efi_guid 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)) |
| *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; |
| u64 length; |
| u32 base; |
| |
| base = (u32)fsp_get_reserved_mem_from_guid(hob_list, |
| &length, (struct efi_guid *)&guid); |
| if ((len != 0) && (base != 0)) |
| *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) |
| { |
| 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); |
| } |
| |
| return hdr; |
| } |
| |
| void *fsp_get_guid_hob_data(const void *hob_list, u32 *len, |
| struct efi_guid *guid) |
| { |
| 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); |
| |
| return get_guid_hob_data(guid_hob); |
| } |
| } |
| |
| void *fsp_get_nvs_data(const void *hob_list, u32 *len) |
| { |
| const struct efi_guid guid = FSP_NON_VOLATILE_STORAGE_HOB_GUID; |
| |
| return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid); |
| } |
| |
| void *fsp_get_bootloader_tmp_mem(const void *hob_list, u32 *len) |
| { |
| const struct efi_guid guid = FSP_BOOTLOADER_TEMP_MEM_HOB_GUID; |
| |
| return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid); |
| } |
| |
| void *fsp_get_graphics_info(const void *hob_list, u32 *len) |
| { |
| const struct efi_guid guid = FSP_GRAPHICS_INFO_HOB_GUID; |
| |
| return fsp_get_guid_hob_data(hob_list, len, (struct efi_guid *)&guid); |
| } |