/* SPDX-License-Identifier: GPL-2.0-only */ #include <cbmem.h> #include <console/console.h> #include <console/streams.h> #include <cpu/x86/tsc.h> #include <program_loading.h> #include <rmodule.h> #include <stage_cache.h> #include <soc/ramstage.h> #include <soc/efi_wrapper.h> static void ABI_X86 send_to_console(unsigned char b) { console_tx_byte(b); } static efi_wrapper_entry_t load_reference_code(void) { if (resume_from_stage_cache()) { struct prog prog; stage_cache_load_stage(STAGE_REFCODE, &prog); return prog_entry(&prog); } struct prog prog = PROG_INIT(PROG_REFCODE, CONFIG_CBFS_PREFIX "/refcode"); struct rmod_stage_load refcode = { .cbmem_id = CBMEM_ID_REFCODE, .prog = &prog, }; if (rmodule_stage_load(&refcode)) { printk(BIOS_DEBUG, "Error loading reference code.\n"); return NULL; } /* Cache loaded reference code. */ stage_cache_add(STAGE_REFCODE, &prog); return prog_entry(&prog); } void baytrail_run_reference_code(void) { int ret; efi_wrapper_entry_t entry; struct efi_wrapper_params wrp = { .version = EFI_WRAPPER_VER, .console_out = send_to_console, }; entry = load_reference_code(); if (entry == NULL) return; wrp.tsc_ticks_per_microsecond = tsc_freq_mhz(); /* Call into reference code. */ ret = entry(&wrp); if (ret != 0) { printk(BIOS_DEBUG, "Reference code returned %d\n", ret); return; } }