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https://github.com/brain-hackers/u-boot-brain
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bb737ced7f
FSP spec 1.1 adds one more member to the struct common_buf to determine the memory size that can be reserved by FSP below "top of low usable memory" for bootloader usage. This new member uses the reserved space so that it is still compatible with previous FSP spec 1.0. A new HOB (FSP_HOB_RESOURCE_OWNER_BOOTLOADER_TOLUM_GUID) is also published when common_buf.tolum_size is valid and non zero. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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* Copyright (C) 2013, Intel Corporation
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* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
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*
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* SPDX-License-Identifier: Intel
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*/
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#ifndef __FSP_API_H__
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#define __FSP_API_H__
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#include <linux/linkage.h>
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/*
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* FSP common configuration structure.
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* This needs to be included in the platform-specific struct fsp_config_data.
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*/
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struct fsp_cfg_common {
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struct fsp_header *fsp_hdr;
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u32 stack_top;
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u32 boot_mode;
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};
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/*
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* FspInit continuation function prototype.
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* Control will be returned to this callback function after FspInit API call.
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*/
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typedef void (*fsp_continuation_f)(u32 status, void *hob_list);
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struct fsp_init_params {
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/* Non-volatile storage buffer pointer */
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void *nvs_buf;
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/* Runtime buffer pointer */
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void *rt_buf;
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/* Continuation function address */
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fsp_continuation_f continuation;
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};
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struct common_buf {
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/*
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* Stack top pointer used by the bootloader. The new stack frame will be
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* set up at this location after FspInit API call.
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*/
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u32 stack_top;
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u32 boot_mode; /* Current system boot mode */
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void *upd_data; /* User platform configuraiton data region */
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u32 tolum_size; /* Top of low usable memory size (FSP 1.1) */
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u32 reserved[6]; /* Reserved */
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};
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enum fsp_phase {
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/* Notification code for post PCI enuermation */
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INIT_PHASE_PCI = 0x20,
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/* Notification code before transfering control to the payload */
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INIT_PHASE_BOOT = 0x40
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};
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struct fsp_notify_params {
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/* Notification phase used for NotifyPhase API */
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enum fsp_phase phase;
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};
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/* FspInit API function prototype */
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typedef asmlinkage u32 (*fsp_init_f)(struct fsp_init_params *params);
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/* FspNotify API function prototype */
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typedef asmlinkage u32 (*fsp_notify_f)(struct fsp_notify_params *params);
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#endif
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