Push old Amlogic BL2 sourcesHEADmaster

1 files changed, 174 insertions, 0 deletions

diff --git a/plat/juno/bl31_plat_setup.c b/plat/juno/bl31_plat_setup.c
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+++ b/plat/juno/bl31_plat_setup.c
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+/*
+ * Copyright (c) 2013-2014, 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 <assert.h>
+#include <bl31.h>
+#include <bl_common.h>
+#include <console.h>
+#include <mmio.h>
+#include <platform.h>
+#include <stddef.h>
+#include "juno_def.h"
+#include "juno_private.h"
+#include "mhu.h"
+
+/*******************************************************************************
+ * Declarations of linker defined symbols which will help us find the layout
+ * of trusted RAM
+ ******************************************************************************/
+extern unsigned long __RO_START__;
+extern unsigned long __RO_END__;
+
+extern unsigned long __COHERENT_RAM_START__;
+extern unsigned long __COHERENT_RAM_END__;
+
+/*
+ * The next 2 constants identify the extents of the code & RO data region.
+ * These addresses are used by the MMU setup code and therefore they must be
+ * page-aligned.  It is the responsibility of the linker script to ensure that
+ * __RO_START__ and __RO_END__ linker symbols refer to page-aligned addresses.
+ */
+#define BL31_RO_BASE (unsigned long)(&__RO_START__)
+#define BL31_RO_LIMIT (unsigned long)(&__RO_END__)
+
+/*
+ * The next 2 constants identify the extents of the coherent memory region.
+ * These addresses are used by the MMU setup code and therefore they must be
+ * page-aligned.  It is the responsibility of the linker script to ensure that
+ * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols
+ * refer to page-aligned addresses.
+ */
+#define BL31_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__)
+#define BL31_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__)
+
+/******************************************************************************
+ * Placeholder variables for copying the arguments that have been passed to
+ * BL3-1 from BL2.
+ ******************************************************************************/
+static entry_point_info_t bl32_ep_info;
+static entry_point_info_t bl33_ep_info;
+
+/*******************************************************************************
+ * Return a pointer to the 'entry_point_info' structure of the next image for
+ * the security state specified. BL3-3 corresponds to the non-secure image type
+ * while BL3-2 corresponds to the secure image type. A NULL pointer is returned
+ * if the image does not exist.
+ ******************************************************************************/
+entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
+{
+	entry_point_info_t *next_image_info;
+
+	next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info;
+
+	/* None of the images on this platform can have 0x0 as the entrypoint */
+	if (next_image_info->pc)
+		return next_image_info;
+	else
+		return NULL;
+}
+
+/*******************************************************************************
+ * Perform any BL3-1 specific platform actions. Here is an opportunity to copy
+ * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they
+ * are lost (potentially). This needs to be done before the MMU is initialized
+ * so that the memory layout can be used while creating page tables. Also, BL2
+ * has flushed this information to memory, so we are guaranteed to pick up good
+ * data
+ ******************************************************************************/
+void bl31_early_platform_setup(bl31_params_t *from_bl2,
+			       void *plat_params_from_bl2)
+{
+	/* Initialize the console to provide early debug support */
+	console_init(PL011_UART0_BASE);
+
+	/*
+	 * Check params passed from BL2 should not be NULL,
+	 */
+	assert(from_bl2 != NULL);
+	assert(from_bl2->h.type == PARAM_BL31);
+	assert(from_bl2->h.version >= VERSION_1);
+	/*
+	 * In debug builds, we pass a special value in 'plat_params_from_bl2'
+	 * to verify platform parameters from BL2 to BL3-1.
+	 * In release builds, it's not used.
+	 */
+	assert(((unsigned long long)plat_params_from_bl2) ==
+		JUNO_BL31_PLAT_PARAM_VAL);
+
+	/*
+	 * Copy BL3-2 and BL3-3 entry point information.
+	 * They are stored in Secure RAM, in BL2's address space.
+	 */
+	bl32_ep_info = *from_bl2->bl32_ep_info;
+	bl33_ep_info = *from_bl2->bl33_ep_info;
+}
+
+/*******************************************************************************
+ * Initialize the MHU and the GIC.
+ ******************************************************************************/
+void bl31_platform_setup(void)
+{
+	unsigned int reg_val;
+
+	mhu_secure_init();
+
+	/* Initialize the gic cpu and distributor interfaces */
+	gic_setup();
+
+	/* Enable and initialize the System level generic timer */
+	mmio_write_32(SYS_CNTCTL_BASE + CNTCR_OFF, CNTCR_FCREQ(0) | CNTCR_EN);
+
+	/* Allow access to the System counter timer module */
+	reg_val = (1 << CNTACR_RPCT_SHIFT) | (1 << CNTACR_RVCT_SHIFT);
+	reg_val |= (1 << CNTACR_RFRQ_SHIFT) | (1 << CNTACR_RVOFF_SHIFT);
+	reg_val |= (1 << CNTACR_RWVT_SHIFT) | (1 << CNTACR_RWPT_SHIFT);
+	mmio_write_32(SYS_TIMCTL_BASE + CNTACR_BASE(1), reg_val);
+
+	reg_val = (1 << CNTNSAR_NS_SHIFT(1));
+	mmio_write_32(SYS_TIMCTL_BASE + CNTNSAR, reg_val);
+
+	/* Topologies are best known to the platform. */
+	plat_setup_topology();
+}
+
+/*******************************************************************************
+ * Perform the very early platform specific architectural setup here. At the
+ * moment this is only intializes the mmu in a quick and dirty way.
+ ******************************************************************************/
+void bl31_plat_arch_setup()
+{
+	configure_mmu_el3(BL31_RO_BASE,
+			  BL31_COHERENT_RAM_LIMIT - BL31_RO_BASE,
+			  BL31_RO_BASE,
+			  BL31_RO_LIMIT,
+			  BL31_COHERENT_RAM_BASE,
+			  BL31_COHERENT_RAM_LIMIT);
+}