ARMv8 Trusted Firmware release v0.2
diff --git a/bl2/bl2_main.c b/bl2/bl2_main.c
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+++ b/bl2/bl2_main.c
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+/*
+ * Copyright (c) 2013, ARM Limited. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <arch_helpers.h>
+#include <console.h>
+#include <platform.h>
+#include <semihosting.h>
+#include <bl_common.h>
+#include <bl2.h>
+
+/*******************************************************************************
+ * The only thing to do in BL2 is to load further images and pass control to
+ * BL31. The memory occupied by BL2 will be reclaimed by BL3_x stages. BL2 runs
+ * entirely in S-EL1. Since arm standard c libraries are not PIC, printf et al
+ * are not available. We rely on assertions to signal error conditions
+ ******************************************************************************/
+void bl2_main(void)
+{
+ meminfo bl2_tzram_layout, *bl31_tzram_layout;
+ el_change_info *ns_image_info;
+ unsigned long bl31_base, el_status;
+ unsigned int bl2_load, bl31_load, mode;
+
+ /* Perform remaining generic architectural setup in S-El1 */
+ bl2_arch_setup();
+
+ /* Perform platform setup in BL1 */
+ bl2_platform_setup();
+
+#if defined (__GNUC__)
+ printf("BL2 Built : %s, %s\n\r", __TIME__, __DATE__);
+#endif
+
+ /* Find out how much free trusted ram remains after BL2 load */
+ bl2_tzram_layout = bl2_get_sec_mem_layout();
+
+ /*
+ * Load BL31. BL1 tells BL2 whether it has been TOP or BOTTOM loaded.
+ * To avoid fragmentation of trusted SRAM memory, BL31 is always
+ * loaded opposite to BL2. This allows BL31 to reclaim BL2 memory
+ * while maintaining its free space in one contiguous chunk.
+ */
+ bl2_load = bl2_tzram_layout.attr & LOAD_MASK;
+ assert((bl2_load == TOP_LOAD) || (bl2_load == BOT_LOAD));
+ bl31_load = (bl2_load == TOP_LOAD) ? BOT_LOAD : TOP_LOAD;
+ bl31_base = load_image(&bl2_tzram_layout, BL31_IMAGE_NAME,
+ bl31_load, BL31_BASE);
+
+ /* Assert if it has not been possible to load BL31 */
+ assert(bl31_base != 0);
+
+ /*
+ * Create a new layout of memory for BL31 as seen by BL2. This
+ * will gobble up all the BL2 memory.
+ */
+ bl31_tzram_layout = (meminfo *) get_el_change_mem_ptr();
+ init_bl31_mem_layout(&bl2_tzram_layout, bl31_tzram_layout, bl31_load);
+
+ /*
+ * BL2 also needs to tell BL31 where the non-trusted software image
+ * has been loaded. Place this info right after the BL31 memory layout
+ */
+ ns_image_info = (el_change_info *) ((unsigned char *) bl31_tzram_layout
+ + sizeof(meminfo));
+
+ /*
+ * Assume that the non-secure bootloader has already been
+ * loaded to its platform-specific location.
+ */
+ ns_image_info->entrypoint = plat_get_ns_image_entrypoint();
+
+ /* Figure out what mode we enter the non-secure world in */
+ el_status = read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL2_SHIFT;
+ el_status &= ID_AA64PFR0_ELX_MASK;
+
+ if (el_status)
+ mode = MODE_EL2;
+ else
+ mode = MODE_EL1;
+
+ ns_image_info->spsr = make_spsr(mode, MODE_SP_ELX, MODE_RW_64);
+ ns_image_info->security_state = NON_SECURE;
+ flush_dcache_range((unsigned long) ns_image_info,
+ sizeof(el_change_info));
+
+ /*
+ * Run BL31 via an SMC to BL1. Information on how to pass control to
+ * the non-trusted software image will be passed to BL31 in x2.
+ */
+ if (bl31_base)
+ run_image(bl31_base,
+ make_spsr(MODE_EL3, MODE_SP_ELX, MODE_RW_64),
+ SECURE,
+ bl31_tzram_layout,
+ (void *) ns_image_info);
+
+ /* There is no valid reason for run_image() to return */
+ assert(0);
+}
+
+/*******************************************************************************
+ * BL1 has this function to print the fact that BL2 has done its job and BL31 is
+ * about to be loaded. Since BL2 re-uses BL1's exception table, it needs to
+ * define this function as well.
+ * TODO: Remove this function from BL2.
+ ******************************************************************************/
+void display_boot_progress(unsigned long entrypoint,
+ unsigned long spsr,
+ unsigned long mem_layout,
+ unsigned long ns_image_info)
+{
+ return;
+}