diff options
Diffstat (limited to 'plat/arm/board/juno/juno_bl2_setup.c')
-rw-r--r-- | plat/arm/board/juno/juno_bl2_setup.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/plat/arm/board/juno/juno_bl2_setup.c b/plat/arm/board/juno/juno_bl2_setup.c new file mode 100644 index 00000000..ffb6387e --- /dev/null +++ b/plat/arm/board/juno/juno_bl2_setup.c @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2016, ARM Limited and Contributors. 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 <assert.h> +#include <bl_common.h> +#include <desc_image_load.h> +#include <plat_arm.h> + +#if JUNO_AARCH32_EL3_RUNTIME +/******************************************************************************* + * This function changes the spsr for BL32 image to bypass + * the check in BL1 AArch64 exception handler. This is needed in the aarch32 + * boot flow as the core comes up in aarch64 and to enter the BL32 image a warm + * reset in aarch32 state is required. + ******************************************************************************/ +int bl2_plat_handle_post_image_load(unsigned int image_id) +{ + int err = arm_bl2_handle_post_image_load(image_id); + + if (!err && (image_id == BL32_IMAGE_ID)) { + bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id); + assert(bl_mem_params); + bl_mem_params->ep_info.spsr = SPSR_64(MODE_EL3, MODE_SP_ELX, + DISABLE_ALL_EXCEPTIONS); + } + + return err; +} +#endif /* JUNO_AARCH32_EL3_RUNTIME */ |