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// SPDX-License-Identifier: Intel
/*
* Copyright (C) 2013, Intel Corporation
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
*/
#include <common.h>
#include <log.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);
}
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