This patch adds generic changes in BL1 to support AArch32 state.
New AArch32 specific assembly/C files are introduced and
some files are moved to AArch32/64 specific folders.
BL1 for AArch64 is refactored but functionally identical.
BL1 executes in Secure Monitor mode in AArch32 state.
NOTE: BL1 in AArch32 state ONLY handles BL1_RUN_IMAGE SMC.
Change-Id: I6e2296374c7efbf3cf2aa1a0ce8de0732d8c98a5
--- /dev/null
+/*
+ * 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.
+ */
+
+
+/*******************************************************************************
+ * TODO: Function that does the first bit of architectural setup.
+ ******************************************************************************/
+void bl1_arch_setup(void)
+{
+
+}
--- /dev/null
+/*
+ * 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 <arch_helpers.h>
+#include <assert.h>
+#include <context.h>
+#include <context_mgmt.h>
+#include <debug.h>
+#include <platform.h>
+#include <smcc_helpers.h>
+
+/*
+ * Following arrays will be used for context management.
+ * There are 2 instances, for the Secure and Non-Secure contexts.
+ */
+static cpu_context_t bl1_cpu_context[2];
+static smc_ctx_t bl1_smc_context[2];
+
+/* Following contains the next cpu context pointer. */
+static void *bl1_next_cpu_context_ptr;
+
+/* Following contains the next smc context pointer. */
+static void *bl1_next_smc_context_ptr;
+
+/* Following functions are used for SMC context handling */
+void *smc_get_ctx(int security_state)
+{
+ assert(sec_state_is_valid(security_state));
+ return &bl1_smc_context[security_state];
+}
+
+void smc_set_next_ctx(int security_state)
+{
+ assert(sec_state_is_valid(security_state));
+ bl1_next_smc_context_ptr = &bl1_smc_context[security_state];
+}
+
+void *smc_get_next_ctx(void)
+{
+ return bl1_next_smc_context_ptr;
+}
+
+/* Following functions are used for CPU context handling */
+void *cm_get_context(uint32_t security_state)
+{
+ assert(sec_state_is_valid(security_state));
+ return &bl1_cpu_context[security_state];
+}
+
+void cm_set_next_context(void *cpu_context)
+{
+ assert(cpu_context);
+ bl1_next_cpu_context_ptr = cpu_context;
+}
+
+void *cm_get_next_context(void)
+{
+ return bl1_next_cpu_context_ptr;
+}
+
+/*******************************************************************************
+ * Following function copies GP regs r0-r4, lr and spsr,
+ * from the CPU context to the SMC context structures.
+ ******************************************************************************/
+static void copy_cpu_ctx_to_smc_ctx(const regs_t *cpu_reg_ctx,
+ smc_ctx_t *next_smc_ctx)
+{
+ next_smc_ctx->r0 = read_ctx_reg(cpu_reg_ctx, CTX_GPREG_R0);
+ next_smc_ctx->r1 = read_ctx_reg(cpu_reg_ctx, CTX_GPREG_R1);
+ next_smc_ctx->r2 = read_ctx_reg(cpu_reg_ctx, CTX_GPREG_R2);
+ next_smc_ctx->r3 = read_ctx_reg(cpu_reg_ctx, CTX_GPREG_R3);
+ next_smc_ctx->lr_mon = read_ctx_reg(cpu_reg_ctx, CTX_LR);
+ next_smc_ctx->spsr_mon = read_ctx_reg(cpu_reg_ctx, CTX_SPSR);
+}
+
+/*******************************************************************************
+ * Following function flushes the SMC & CPU context pointer and its data.
+ ******************************************************************************/
+static void flush_smc_and_cpu_ctx(void)
+{
+ flush_dcache_range((uintptr_t)&bl1_next_smc_context_ptr,
+ sizeof(bl1_next_smc_context_ptr));
+ flush_dcache_range((uintptr_t)bl1_next_smc_context_ptr,
+ sizeof(smc_ctx_t));
+
+ flush_dcache_range((uintptr_t)&bl1_next_cpu_context_ptr,
+ sizeof(bl1_next_cpu_context_ptr));
+ flush_dcache_range((uintptr_t)bl1_next_cpu_context_ptr,
+ sizeof(cpu_context_t));
+}
+
+/*******************************************************************************
+ * This function prepares the context for Secure/Normal world images.
+ * Normal world images are transitioned to HYP(if supported) else SVC.
+ ******************************************************************************/
+void bl1_prepare_next_image(unsigned int image_id)
+{
+ unsigned int security_state;
+ image_desc_t *image_desc;
+ entry_point_info_t *next_bl_ep;
+
+ /* Get the image descriptor. */
+ image_desc = bl1_plat_get_image_desc(image_id);
+ assert(image_desc);
+
+ /* Get the entry point info. */
+ next_bl_ep = &image_desc->ep_info;
+
+ /* Get the image security state. */
+ security_state = GET_SECURITY_STATE(next_bl_ep->h.attr);
+
+ /* Prepare the SPSR for the next BL image. */
+ if (security_state == SECURE) {
+ next_bl_ep->spsr = SPSR_MODE32(MODE32_svc, SPSR_T_ARM,
+ SPSR_E_LITTLE, DISABLE_ALL_EXCEPTIONS);
+ } else {
+ /* Use HYP mode if supported else use SVC. */
+ if (GET_VIRT_EXT(read_id_pfr1()) == MODE32_hyp) {
+ next_bl_ep->spsr = SPSR_MODE32(MODE32_hyp, SPSR_T_ARM,
+ SPSR_E_LITTLE, DISABLE_ALL_EXCEPTIONS);
+ } else {
+ next_bl_ep->spsr = SPSR_MODE32(MODE32_svc, SPSR_T_ARM,
+ SPSR_E_LITTLE, DISABLE_ALL_EXCEPTIONS);
+ }
+ }
+
+ /* Allow platform to make change */
+ bl1_plat_set_ep_info(image_id, next_bl_ep);
+
+ /* Prepare the cpu context for the next BL image. */
+ cm_init_my_context(next_bl_ep);
+ cm_prepare_el3_exit(security_state);
+ cm_set_next_context(cm_get_context(security_state));
+
+ /* Prepare the smc context for the next BL image. */
+ smc_set_next_ctx(security_state);
+ copy_cpu_ctx_to_smc_ctx(get_regs_ctx(cm_get_next_context()),
+ smc_get_next_ctx());
+
+ /*
+ * Flush the SMC & CPU context and the (next)pointers,
+ * to access them after caches are disabled.
+ */
+ flush_smc_and_cpu_ctx();
+
+ /* Indicate that image is in execution state. */
+ image_desc->state = IMAGE_STATE_EXECUTED;
+
+ print_entry_point_info(next_bl_ep);
+}
--- /dev/null
+/*
+ * 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 <arch.h>
+#include <asm_macros.S>
+#include <bl_common.h>
+#include <context.h>
+#include <el3_common_macros.S>
+#include <smcc_helpers.h>
+#include <smcc_macros.S>
+
+ .globl bl1_vector_table
+ .globl bl1_entrypoint
+
+ /* -----------------------------------------------------
+ * Setup the vector table to support SVC & MON mode.
+ * -----------------------------------------------------
+ */
+vector_base bl1_vector_table
+ b bl1_entrypoint
+ b report_exception /* Undef */
+ b bl1_aarch32_smc_handler /* SMC call */
+ b report_exception /* Prefetch abort */
+ b report_exception /* Data abort */
+ b report_exception /* Reserved */
+ b report_exception /* IRQ */
+ b report_exception /* FIQ */
+
+ /* -----------------------------------------------------
+ * bl1_entrypoint() is the entry point into the trusted
+ * firmware code when a cpu is released from warm or
+ * cold reset.
+ * -----------------------------------------------------
+ */
+
+func bl1_entrypoint
+/* ---------------------------------------------------------------------
+* If the reset address is programmable then bl1_entrypoint() is
+* executed only on the cold boot path. Therefore, we can skip the warm
+* boot mailbox mechanism.
+* ---------------------------------------------------------------------
+*/
+ el3_entrypoint_common \
+ _set_endian=1 \
+ _warm_boot_mailbox=!PROGRAMMABLE_RESET_ADDRESS \
+ _secondary_cold_boot=!COLD_BOOT_SINGLE_CPU \
+ _init_memory=1 \
+ _init_c_runtime=1 \
+ _exception_vectors=bl1_vector_table
+
+ /* -----------------------------------------------------
+ * Perform early platform setup & platform
+ * specific early arch. setup e.g. mmu setup
+ * -----------------------------------------------------
+ */
+ bl bl1_early_platform_setup
+ bl bl1_plat_arch_setup
+
+ /* -----------------------------------------------------
+ * Jump to main function.
+ * -----------------------------------------------------
+ */
+ bl bl1_main
+
+ /* -----------------------------------------------------
+ * Jump to next image.
+ * -----------------------------------------------------
+ */
+
+ /*
+ * MMU needs to be disabled because both BL1 and BL2 execute
+ * in PL1, and therefore share the same address space.
+ * BL2 will initialize the address space according to its
+ * own requirement.
+ */
+ bl disable_mmu_icache_secure
+ stcopr r0, TLBIALL
+ dsb sy
+ isb
+
+ /* Get the cpu_context for next BL image */
+ bl cm_get_next_context
+
+ /* Restore the SCR */
+ ldr r2, [r0, #CTX_REGS_OFFSET + CTX_SCR]
+ stcopr r2, SCR
+ isb
+
+ /*
+ * Get the smc_context for next BL image,
+ * program the gp/system registers and exit
+ * secure monitor mode
+ */
+ bl smc_get_next_ctx
+ smcc_restore_gp_mode_regs
+ eret
+endfunc bl1_entrypoint
--- /dev/null
+/*
+ * 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 <arch.h>
+#include <asm_macros.S>
+#include <bl1.h>
+#include <bl_common.h>
+
+ .globl bl1_aarch32_smc_handler
+
+
+func bl1_aarch32_smc_handler
+ /* ------------------------------------------------
+ * SMC in BL1 is handled assuming that the MMU is
+ * turned off by BL2.
+ * ------------------------------------------------
+ */
+
+ /* ----------------------------------------------
+ * Only RUN_IMAGE SMC is supported.
+ * ----------------------------------------------
+ */
+ mov r8, #BL1_SMC_RUN_IMAGE
+ cmp r8, r0
+ blne report_exception
+
+ /* ------------------------------------------------
+ * Make sure only Secure world reaches here.
+ * ------------------------------------------------
+ */
+ ldcopr r8, SCR
+ tst r8, #SCR_NS_BIT
+ blne report_exception
+
+ /* ---------------------------------------------------------------------
+ * Pass control to next secure image.
+ * Here it expects r1 to contain the address of a entry_point_info_t
+ * structure describing the BL entrypoint.
+ * ---------------------------------------------------------------------
+ */
+ mov r8, r1
+ mov r0, r1
+ bl bl1_print_next_bl_ep_info
+
+#if SPIN_ON_BL1_EXIT
+ bl print_debug_loop_message
+debug_loop:
+ b debug_loop
+#endif
+
+ mov r0, r8
+ bl bl1_plat_prepare_exit
+
+ stcopr r0, TLBIALL
+ dsb sy
+ isb
+
+ /*
+ * Extract PC and SPSR based on struct `entry_point_info_t`
+ * and load it in LR and SPSR registers respectively.
+ */
+ ldr lr, [r8, #ENTRY_POINT_INFO_PC_OFFSET]
+ ldr r1, [r8, #(ENTRY_POINT_INFO_PC_OFFSET + 4)]
+ msr spsr, r1
+
+ add r8, r8, #ENTRY_POINT_INFO_ARGS_OFFSET
+ ldm r8, {r0, r1, r2, r3}
+ eret
+endfunc bl1_aarch32_smc_handler
--- /dev/null
+/*
+ * Copyright (c) 2015-2016, 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 <arch_helpers.h>
+#include <assert.h>
+#include <context.h>
+#include <context_mgmt.h>
+#include <debug.h>
+#include <platform.h>
+
+/*
+ * Following array will be used for context management.
+ * There are 2 instances, for the Secure and Non-Secure contexts.
+ */
+static cpu_context_t bl1_cpu_context[2];
+
+/* Following contains the cpu context pointers. */
+static void *bl1_cpu_context_ptr[2];
+
+
+void *cm_get_context(uint32_t security_state)
+{
+ assert(sec_state_is_valid(security_state));
+ return bl1_cpu_context_ptr[security_state];
+}
+
+void cm_set_context(void *context, uint32_t security_state)
+{
+ assert(sec_state_is_valid(security_state));
+ bl1_cpu_context_ptr[security_state] = context;
+}
+
+/*******************************************************************************
+ * This function prepares the context for Secure/Normal world images.
+ * Normal world images are transitioned to EL2(if supported) else EL1.
+ ******************************************************************************/
+void bl1_prepare_next_image(unsigned int image_id)
+{
+ unsigned int security_state;
+ image_desc_t *image_desc;
+ entry_point_info_t *next_bl_ep;
+
+#if CTX_INCLUDE_AARCH32_REGS
+ /*
+ * Ensure that the build flag to save AArch32 system registers in CPU
+ * context is not set for AArch64-only platforms.
+ */
+ if (((read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL1_SHIFT)
+ & ID_AA64PFR0_ELX_MASK) == 0x1) {
+ ERROR("EL1 supports AArch64-only. Please set build flag "
+ "CTX_INCLUDE_AARCH32_REGS = 0");
+ panic();
+ }
+#endif
+
+ /* Get the image descriptor. */
+ image_desc = bl1_plat_get_image_desc(image_id);
+ assert(image_desc);
+
+ /* Get the entry point info. */
+ next_bl_ep = &image_desc->ep_info;
+
+ /* Get the image security state. */
+ security_state = GET_SECURITY_STATE(next_bl_ep->h.attr);
+
+ /* Setup the Secure/Non-Secure context if not done already. */
+ if (!cm_get_context(security_state))
+ cm_set_context(&bl1_cpu_context[security_state], security_state);
+
+ /* Prepare the SPSR for the next BL image. */
+ if (security_state == SECURE) {
+ next_bl_ep->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
+ DISABLE_ALL_EXCEPTIONS);
+ } else {
+ /* Use EL2 if supported else use EL1. */
+ if (read_id_aa64pfr0_el1() &
+ (ID_AA64PFR0_ELX_MASK << ID_AA64PFR0_EL2_SHIFT)) {
+ next_bl_ep->spsr = SPSR_64(MODE_EL2, MODE_SP_ELX,
+ DISABLE_ALL_EXCEPTIONS);
+ } else {
+ next_bl_ep->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
+ DISABLE_ALL_EXCEPTIONS);
+ }
+ }
+
+ /* Allow platform to make change */
+ bl1_plat_set_ep_info(image_id, next_bl_ep);
+
+ /* Prepare the context for the next BL image. */
+ cm_init_my_context(next_bl_ep);
+ cm_prepare_el3_exit(security_state);
+
+ /* Indicate that image is in execution state. */
+ image_desc->state = IMAGE_STATE_EXECUTED;
+
+ print_entry_point_info(next_bl_ep);
+}
mov sp, x30
/* ---------------------------------------------------------------------
- * Pass EL3 control to BL31.
+ * Pass EL3 control to next BL image.
* Here it expects X1 with the address of a entry_point_info_t
- * structure describing the BL31 entrypoint.
+ * structure describing the next BL image entrypoint.
* ---------------------------------------------------------------------
*/
mov x20, x1
mov x0, x20
- bl bl1_print_bl31_ep_info
+ bl bl1_print_next_bl_ep_info
ldp x0, x1, [x20, #ENTRY_POINT_INFO_PC_OFFSET]
msr elr_el3, x0
#
BL1_SOURCES += bl1/bl1_main.c \
- bl1/aarch64/bl1_arch_setup.c \
- bl1/aarch64/bl1_entrypoint.S \
- bl1/aarch64/bl1_exceptions.S \
- bl1/bl1_context_mgmt.c \
- lib/cpus/aarch64/cpu_helpers.S \
- lib/el3_runtime/aarch64/context.S \
- lib/el3_runtime/aarch64/context_mgmt.c \
+ bl1/${ARCH}/bl1_arch_setup.c \
+ bl1/${ARCH}/bl1_context_mgmt.c \
+ bl1/${ARCH}/bl1_entrypoint.S \
+ bl1/${ARCH}/bl1_exceptions.S \
+ lib/cpus/${ARCH}/cpu_helpers.S \
+ lib/el3_runtime/${ARCH}/context_mgmt.c \
plat/common/plat_bl1_common.c
+
+ifeq (${ARCH},aarch64)
+BL1_SOURCES += lib/el3_runtime/aarch64/context.S
+endif
+
ifeq (${TRUSTED_BOARD_BOOT},1)
BL1_SOURCES += bl1/bl1_fwu.c
endif
+++ /dev/null
-/*
- * Copyright (c) 2015-2016, 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 <arch_helpers.h>
-#include <assert.h>
-#include <context.h>
-#include <context_mgmt.h>
-#include <debug.h>
-#include <platform.h>
-
-/*
- * Following array will be used for context management.
- * There are 2 instances, for the Secure and Non-Secure contexts.
- */
-static cpu_context_t bl1_cpu_context[2];
-
-/* Following contains the cpu context pointers. */
-static void *bl1_cpu_context_ptr[2];
-
-
-void *cm_get_context(uint32_t security_state)
-{
- assert(sec_state_is_valid(security_state));
- return bl1_cpu_context_ptr[security_state];
-}
-
-void cm_set_context(void *context, uint32_t security_state)
-{
- assert(sec_state_is_valid(security_state));
- bl1_cpu_context_ptr[security_state] = context;
-}
-
-/*******************************************************************************
- * This function prepares the context for Secure/Normal world images.
- * Normal world images are transitioned to EL2(if supported) else EL1.
- ******************************************************************************/
-void bl1_prepare_next_image(unsigned int image_id)
-{
- unsigned int security_state;
- image_desc_t *image_desc;
- entry_point_info_t *next_bl_ep;
-
-#if CTX_INCLUDE_AARCH32_REGS
- /*
- * Ensure that the build flag to save AArch32 system registers in CPU
- * context is not set for AArch64-only platforms.
- */
- if (((read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL1_SHIFT)
- & ID_AA64PFR0_ELX_MASK) == 0x1) {
- ERROR("EL1 supports AArch64-only. Please set build flag "
- "CTX_INCLUDE_AARCH32_REGS = 0");
- panic();
- }
-#endif
-
- /* Get the image descriptor. */
- image_desc = bl1_plat_get_image_desc(image_id);
- assert(image_desc);
-
- /* Get the entry point info. */
- next_bl_ep = &image_desc->ep_info;
-
- /* Get the image security state. */
- security_state = GET_SECURITY_STATE(next_bl_ep->h.attr);
-
- /* Setup the Secure/Non-Secure context if not done already. */
- if (!cm_get_context(security_state))
- cm_set_context(&bl1_cpu_context[security_state], security_state);
-
- /* Prepare the SPSR for the next BL image. */
- if (security_state == SECURE) {
- next_bl_ep->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
- DISABLE_ALL_EXCEPTIONS);
- } else {
- /* Use EL2 if supported else use EL1. */
- if (read_id_aa64pfr0_el1() &
- (ID_AA64PFR0_ELX_MASK << ID_AA64PFR0_EL2_SHIFT)) {
- next_bl_ep->spsr = SPSR_64(MODE_EL2, MODE_SP_ELX,
- DISABLE_ALL_EXCEPTIONS);
- } else {
- next_bl_ep->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
- DISABLE_ALL_EXCEPTIONS);
- }
- }
-
- /* Allow platform to make change */
- bl1_plat_set_ep_info(image_id, next_bl_ep);
-
- /* Prepare the context for the next BL image. */
- cm_init_my_context(next_bl_ep);
- cm_prepare_el3_exit(security_state);
-
- /* Indicate that image is in execution state. */
- image_desc->state = IMAGE_STATE_EXECUTED;
-
- print_entry_point_info(next_bl_ep);
-}
NOTICE("BL1: %s\n", version_string);
NOTICE("BL1: %s\n", build_message);
- INFO("BL1: RAM 0x%lx - 0x%lx\n", BL1_RAM_BASE, BL1_RAM_LIMIT);
+ INFO("BL1: RAM %p - %p\n", (void *)BL1_RAM_BASE,
+ (void *)BL1_RAM_LIMIT);
#if DEBUG
- unsigned long val;
+ u_register_t val;
/*
* Ensure that MMU/Caches and coherency are turned on
*/
+#ifdef AARCH32
+ val = read_sctlr();
+#else
val = read_sctlr_el3();
+#endif
assert(val & SCTLR_M_BIT);
assert(val & SCTLR_C_BIT);
assert(val & SCTLR_I_BIT);
bl1_init_bl2_mem_layout(bl1_tzram_layout, bl2_tzram_layout);
- ep_info->args.arg1 = (unsigned long)bl2_tzram_layout;
+ ep_info->args.arg1 = (uintptr_t)bl2_tzram_layout;
NOTICE("BL1: Booting BL2\n");
- VERBOSE("BL1: BL2 memory layout address = 0x%llx\n",
- (unsigned long long) bl2_tzram_layout);
+ VERBOSE("BL1: BL2 memory layout address = %p\n",
+ (void *) bl2_tzram_layout);
}
/*******************************************************************************
- * Function called just before handing over to BL31 to inform the user about
- * the boot progress. In debug mode, also print details about the BL31 image's
- * execution context.
+ * Function called just before handing over to the next BL to inform the user
+ * about the boot progress. In debug mode, also print details about the BL
+ * image's execution context.
******************************************************************************/
-void bl1_print_bl31_ep_info(const entry_point_info_t *bl31_ep_info)
+void bl1_print_next_bl_ep_info(const entry_point_info_t *bl_ep_info)
{
+#ifdef AARCH32
+ NOTICE("BL1: Booting BL32\n");
+#else
NOTICE("BL1: Booting BL31\n");
- print_entry_point_info(bl31_ep_info);
+#endif /* AARCH32 */
+ print_entry_point_info(bl_ep_info);
}
#if SPIN_ON_BL1_EXIT
* Declarations of linker defined symbols which will tell us where BL1 lives
* in Trusted ROM and RAM
******************************************************************************/
-extern uint64_t __BL1_ROM_END__;
-#define BL1_ROM_END (uint64_t)(&__BL1_ROM_END__)
+extern uintptr_t __BL1_ROM_END__;
+#define BL1_ROM_END (uintptr_t)(&__BL1_ROM_END__)
-extern uint64_t __BL1_RAM_START__;
-extern uint64_t __BL1_RAM_END__;
-#define BL1_RAM_BASE (uint64_t)(&__BL1_RAM_START__)
-#define BL1_RAM_LIMIT (uint64_t)(&__BL1_RAM_END__)
+extern uintptr_t __BL1_RAM_START__;
+extern uintptr_t __BL1_RAM_END__;
+#define BL1_RAM_BASE (uintptr_t)(&__BL1_RAM_START__)
+#define BL1_RAM_LIMIT (uintptr_t)(&__BL1_RAM_END__)
/******************************************
* Function prototypes
"msr spsel, #0\n"
: : "r" (context));
}
+
+#else
+void *cm_get_next_context(void);
#endif /* AARCH32 */
+
#endif /* __CM_H__ */
projects / project / bcm63xx / atf.git / commitdiff