diff options
Diffstat (limited to 'arch/x86/lib/fsp/fsp_support.c')
| -rw-r--r-- | arch/x86/lib/fsp/fsp_support.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/arch/x86/lib/fsp/fsp_support.c b/arch/x86/lib/fsp/fsp_support.c new file mode 100644 index 0000000000..014de35e56 --- /dev/null +++ b/arch/x86/lib/fsp/fsp_support.c @@ -0,0 +1,176 @@ +// SPDX-License-Identifier: Intel +/* + * Copyright (C) 2013, Intel Corporation + * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> + */ + +#include <common.h> +#include <asm/fsp1/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_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); +} |