| // SPDX-License-Identifier: Intel |
| /* |
| * Copyright (C) 2013, Intel Corporation |
| * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> |
| */ |
| |
| #include <common.h> |
| #include <asm/fsp/fsp_support.h> |
| #include <asm/post.h> |
| |
| 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, |
| const efi_guid_t *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 (!guidcmp(&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 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, &guid); |
| if (len && base) |
| *len = (u32)length; |
| |
| return base; |
| } |
| |
| u32 fsp_get_tseg_reserved_mem(const void *hob_list, u32 *len) |
| { |
| 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, &guid); |
| if (len && base) |
| *len = (u32)length; |
| |
| return base; |
| } |
| |
| void *fsp_get_nvs_data(const void *hob_list, u32 *len) |
| { |
| const efi_guid_t guid = FSP_NON_VOLATILE_STORAGE_HOB_GUID; |
| |
| return hob_get_guid_hob_data(hob_list, len, &guid); |
| } |
| |
| void *fsp_get_var_nvs_data(const void *hob_list, u32 *len) |
| { |
| const efi_guid_t guid = FSP_VARIABLE_NV_DATA_HOB_GUID; |
| |
| return hob_get_guid_hob_data(hob_list, len, &guid); |
| } |
| |
| void *fsp_get_bootloader_tmp_mem(const void *hob_list, u32 *len) |
| { |
| const efi_guid_t guid = FSP_BOOTLOADER_TEMP_MEM_HOB_GUID; |
| |
| return hob_get_guid_hob_data(hob_list, len, &guid); |
| } |
| |
| void *fsp_get_graphics_info(const void *hob_list, u32 *len) |
| { |
| const efi_guid_t guid = FSP_GRAPHICS_INFO_HOB_GUID; |
| |
| return hob_get_guid_hob_data(hob_list, len, &guid); |
| } |