src/arch/riscv/boot.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <program_loading.h>
   4 #include <vm.h>
   5 #include <arch/boot.h>
   6 #include <arch/encoding.h>
   7 #include <arch/smp/smp.h>
   8 #include <mcall.h>
   9 #include <cbfs.h>
  10 #include <console/console.h>
  11
  12 struct arch_prog_run_args {
  13         struct prog *prog;
  14         struct prog *opensbi;
  15 };
  16
  17 /*
  18  * A pointer to the Flattened Device Tree passed to coreboot by the boot ROM.
  19  * Presumably this FDT is also in ROM.
  20  *
  21  * This pointer is only used in ramstage!
  22  */
  23
  24 static void do_arch_prog_run(struct arch_prog_run_args *args)
  25 {
  26         int hart_id = HLS()->hart_id;
  27         struct prog *prog = args->prog;
  28         void *fdt = HLS()->fdt;
  29
  30         if (prog_cbfs_type(prog) == CBFS_TYPE_FIT_PAYLOAD)
  31                 fdt = prog_entry_arg(prog);
  32
  33         if (ENV_RAMSTAGE && prog_type(prog) == PROG_PAYLOAD) {
  34                 if (CONFIG(RISCV_OPENSBI)) {
  35                         // tell OpenSBI to switch to Supervisor mode before jumping to payload
  36                         run_payload_opensbi(prog, fdt, args->opensbi, RISCV_PAYLOAD_MODE_S);
  37                 } else {
  38                         run_payload(prog, fdt, RISCV_PAYLOAD_MODE_S);
  39                 }
  40         } else {
  41                 void (*doit)(int hart_id, void *fdt, void *arg) = prog_entry(prog);
  42                 doit(hart_id, fdt, prog_entry_arg(prog));
  43         }
  44
  45         die("Failed to run stage");
  46 }
  47
  48 void arch_prog_run(struct prog *prog)
  49 {
  50         struct arch_prog_run_args args = {};
  51
  52         args.prog = prog;
  53
  54         /* In case of OpenSBI we have to load it before resuming all HARTs */
  55         if (ENV_RAMSTAGE && CONFIG(RISCV_OPENSBI)) {
  56                 struct prog sbi = PROG_INIT(PROG_OPENSBI, CONFIG_CBFS_PREFIX"/opensbi");
  57
  58                 if (!selfload_check(&sbi, BM_MEM_OPENSBI))
  59                         die("OpenSBI load failed");
  60
  61                 args.opensbi = &sbi;
  62         }
  63
  64         smp_resume((void (*)(void *))do_arch_prog_run, &args);
  65 }