biosram.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef AMD_BLOCK_BIOSRAM_H
#define AMD_BLOCK_BIOSRAM_H
 
#include <stdint.h>
 
/* Any new chipset and board must implement cbmem_top() for both
 * romstage and ramstage to support early features like COLLECT_TIMESTAMPS
 * and CBMEM_CONSOLE. With AMD it is necessary to have cbmem_top()
 * value stored in nvram to enable early recovery on S3 path.
 */
void backup_top_of_low_cacheable(uintptr_t ramtop);
uintptr_t restore_top_of_low_cacheable(void);
 
/* Returns the bootblock C entry point for APs */
void *get_ap_entry_ptr(void);
/* Used by BSP to store the bootblock entry point for APs */
void set_ap_entry_ptr(void *entry);
/* Saves the UMA size returned by AGESA */
void save_uma_size(uint32_t size);
/* Saves the UMA base address returned by AGESA */
void save_uma_base(uint64_t base);
/* Returns the saved UMA size */
uint32_t get_uma_size(void);
/* Returns the saved UMA base */
uint64_t get_uma_base(void);
 
#endif /* AMD_BLOCK_BIOSRAM_H */