src/arch/riscv/opensbi.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /* OpenSBI wants to make its own definitions for some of our compiler.h macros. */
   4 #undef __packed
   5 #undef __noreturn
   6
   7 #include <sbi/fw_dynamic.h>
   8 #include <arch/boot.h>
   9 /* DO NOT INCLUDE COREBOOT HEADERS HERE */
  10
  11 void run_opensbi(const int hart_id,
  12                  const void *fdt,
  13                  const void *opensbi,
  14                  const void *payload,
  15                  const int payload_mode)
  16 {
  17         struct fw_dynamic_info info = {
  18                 .magic = FW_DYNAMIC_INFO_MAGIC_VALUE,
  19                 .version = FW_DYNAMIC_INFO_VERSION_MAX,
  20                 .next_mode = payload_mode,
  21                 .next_addr = (uintptr_t)payload,
  22         };
  23
  24         csr_write(mepc, opensbi);
  25         asm volatile (
  26                         "mv     a0, %0\n\t"
  27                         "mv     a1, %1\n\t"
  28                         "mv     a2, %2\n\t"
  29                         "mret" :
  30                         : "r"(hart_id), "r"(fdt), "r"(&info)
  31                         : "a0", "a1", "a2");
  32 }