AArch32: Add generic changes in BL1

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

bl1/aarch32/bl1_arch_setup.c

+/*
+ * 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)
+{
+
+}

bl1/aarch32/bl1_context_mgmt.c

+/*
+ * 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);
+}

bl1/aarch32/bl1_entrypoint.S

+/*
+ * 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

bl1/aarch32/bl1_exceptions.S

+/*
+ * 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

bl1/aarch64/bl1_exceptions.S

@@ -192,15 +192,15 @@ func smc_handler64
 	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/bl1.mk

@@ -29,15 +29,19 @@
 #
 
 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

bl1/bl1_main.c

@@ -107,15 +107,20 @@ void bl1_main(void)
 	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);
@@ -223,21 +228,25 @@ void bl1_load_bl2(void)
 
 	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

bl1/bl1_private.h

@@ -37,13 +37,13 @@
  * 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

include/lib/el3_runtime/context_mgmt.h

@@ -103,5 +103,9 @@ static inline void cm_set_next_context(void *context)
 			 "msr	spsel, #0\n"
 			 : : "r" (context));
 }
+
+#else
+void *cm_get_next_context(void);
 #endif /* AARCH32 */
+
 #endif /* __CM_H__ */