/* SPDX-License-Identifier: GPL-2.0+ */ #ifndef __OPENSBI_H #define __OPENSBI_H #define FW_DYNAMIC_INFO_MAGIC_VALUE 0x4942534f #define FW_DYNAMIC_INFO_NEXT_MODE_S 0x1 /** Representation dynamic info passed by previous booting stage */ struct fw_dynamic_info { /** Info magic */ unsigned long magic; /** Info version */ unsigned long version; /** Next booting stage address */ unsigned long next_addr; /** Next booting stage mode */ unsigned long next_mode; /** Options for OpenSBI library */ unsigned long options; /** * Preferred boot HART id * * It is possible that the previous booting stage uses same link * address as the FW_DYNAMIC firmware. In this case, the relocation * lottery mechanism can potentially overwrite the previous booting * stage while other HARTs are still running in the previous booting * stage leading to boot-time crash. To avoid this boot-time crash, * the previous booting stage can specify last HART that will jump * to the FW_DYNAMIC firmware as the preferred boot HART. * * To avoid specifying a preferred boot HART, the previous booting * stage can set it to -1UL which will force the FW_DYNAMIC firmware * to use the relocation lottery mechanism. */ unsigned long boot_hart; } __packed; #endif