diff options
Diffstat (limited to 'src/arch/arm64/armv8/secmon_loader.c')
-rw-r--r-- | src/arch/arm64/armv8/secmon_loader.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/src/arch/arm64/armv8/secmon_loader.c b/src/arch/arm64/armv8/secmon_loader.c deleted file mode 100644 index 946ca0f9e9..0000000000 --- a/src/arch/arm64/armv8/secmon_loader.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2014 Google Inc - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; version 2 of - * the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * secmon_loader.c: Responsible for loading the rmodule, providing entry point - * and parameter location for the rmodule. - */ - -#include <arch/cache.h> -#include <arch/lib_helpers.h> -#include <arch/secmon.h> -#include <arch/spintable.h> -#include <arch/stages.h> -#include <console/console.h> -#include <rmodule.h> -#include <string.h> - -/* SECMON entry point encoded as an rmodule */ -extern unsigned char _binary_secmon_start[]; - -typedef void (*secmon_entry_t)(struct secmon_params *); - -void __attribute__((weak)) soc_get_secmon_base_size(uint64_t *secmon_base, size_t *secmon_size) -{ - /* Default weak implementation initializes to 0 */ - *secmon_base = 0; - *secmon_size = 0; -} - -static secmon_entry_t secmon_load_rmodule(void) -{ - struct rmodule secmon_mod; - uint64_t secmon_base; - size_t secmon_size; - - /* Get base address and size of the area available for secure monitor - * rmodule. - */ - soc_get_secmon_base_size(&secmon_base, &secmon_size); - - if ((secmon_base == 0) || (secmon_size == 0)) { - printk(BIOS_ERR, "ARM64: secmon_base / secmon_size invalid\n"); - return NULL; - } - - printk(BIOS_DEBUG,"secmon_base:%lx,secmon_size:%lx\n", - (unsigned long)secmon_base, (unsigned long)secmon_size); - - /* Fail if can't parse secmon module */ - if (rmodule_parse(&_binary_secmon_start, &secmon_mod)) { - printk(BIOS_ERR, "ARM64: secmon_mod not found\n"); - return NULL; - } - - /* Load rmodule at secmon_base */ - if (rmodule_load((void *)secmon_base, &secmon_mod)) { - printk(BIOS_ERR, "ARM64:secmon_mod cannot load\n"); - return NULL; - } - - /* Identify the entry point for secure monitor */ - return rmodule_entry(&secmon_mod); -} - -struct secmon_runit { - secmon_entry_t entry; - struct secmon_params params; -}; - -static void secmon_start(void *arg) -{ - uint32_t scr; - secmon_entry_t entry; - struct secmon_params *p; - struct secmon_runit *r = arg; - - entry = r->entry; - p = &r->params; - - /* Obtain secondary entry point for non-BSP CPUs. */ - if (!cpu_is_bsp()) - entry = secondary_entry_point(entry); - - printk(BIOS_DEBUG, "CPU%x entering secure monitor %p.\n", - cpu_info()->id, entry); - - /* We want to enforce the following policies: - * NS bit is set for lower EL - */ - scr = raw_read_scr_el3(); - scr |= SCR_NS; - raw_write_scr_el3(scr); - - /* Invalidate instruction cache. Necessary for non-BSP. */ - icache_invalidate_all(); - entry(p); -} - -static void fill_secmon_params(struct secmon_params *p, - void (*bsp_entry)(void *), void *bsp_arg) -{ - const struct spintable_attributes *spin_attrs; - - memset(p, 0, sizeof(*p)); - - p->online_cpus = cpus_online(); - - spin_attrs = spintable_get_attributes(); - - if (spin_attrs != NULL) { - p->secondary.run = spin_attrs->entry; - p->secondary.arg = spin_attrs->addr; - } - - p->bsp.run = bsp_entry; - p->bsp.arg = bsp_arg; -} - -void secmon_run(void (*entry)(void *), void *cb_tables) -{ - static struct secmon_runit runit; - struct cpu_action action = { - .run = secmon_start, - .arg = &runit, - }; - - printk(BIOS_SPEW, "payload jump @ %p\n", entry); - - if (get_current_el() != EL3) { - printk(BIOS_DEBUG, "Secmon Error: Can only be loaded in EL3\n"); - return; - } - - runit.entry = secmon_load_rmodule(); - - if (runit.entry == NULL) - die("ARM64 Error: secmon load error"); - - printk(BIOS_DEBUG, "ARM64: Loaded the el3 monitor...jumping to %p\n", - runit.entry); - - fill_secmon_params(&runit.params, entry, cb_tables); - - arch_run_on_all_cpus_but_self_async(&action); - secmon_start(&runit); -} |