1 files changed, 113 insertions, 0 deletions
diff --git a/plat/qemu/common/qemu_bl31_setup.c b/plat/qemu/common/qemu_bl31_setup.c
new file mode 100644
index 0000000..4f60eb1
--- /dev/null
+++ b/plat/qemu/common/qemu_bl31_setup.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <common/bl_common.h>
+#include <drivers/arm/pl061_gpio.h>
+#include <plat/common/platform.h>
+
+#include "qemu_private.h"
+
+/*
+ * Placeholder variables for copying the arguments that have been passed to
+ * BL3-1 from BL2.
+ */
+static entry_point_info_t bl32_image_ep_info;
+static entry_point_info_t bl33_image_ep_info;
+
+/*******************************************************************************
+ * Perform any BL3-1 early platform setup.  Here is an opportunity to copy
+ * parameters passed by the calling EL (S-EL1 in BL2 & 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. BL2 has flushed this information to memory, so we are guaranteed
+ * to pick up good data.
+ ******************************************************************************/
+void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
+				u_register_t arg2, u_register_t arg3)
+{
+	/* Initialize the console to provide early debug support */
+	qemu_console_init();
+
+	/*
+	 * Check params passed from BL2
+	 */
+	bl_params_t *params_from_bl2 = (bl_params_t *)arg0;
+
+	assert(params_from_bl2);
+	assert(params_from_bl2->h.type == PARAM_BL_PARAMS);
+	assert(params_from_bl2->h.version >= VERSION_2);
+
+	bl_params_node_t *bl_params = params_from_bl2->head;
+
+	/*
+	 * Copy BL33 and BL32 (if present), entry point information.
+	 * They are stored in Secure RAM, in BL2's address space.
+	 */
+	while (bl_params) {
+		if (bl_params->image_id == BL32_IMAGE_ID)
+			bl32_image_ep_info = *bl_params->ep_info;
+
+		if (bl_params->image_id == BL33_IMAGE_ID)
+			bl33_image_ep_info = *bl_params->ep_info;
+
+		bl_params = bl_params->next_params_info;
+	}
+
+	if (!bl33_image_ep_info.pc)
+		panic();
+}
+
+void bl31_plat_arch_setup(void)
+{
+	qemu_configure_mmu_el3(BL31_BASE, (BL31_END - BL31_BASE),
+			      BL_CODE_BASE, BL_CODE_END,
+			      BL_RO_DATA_BASE, BL_RO_DATA_END,
+			      BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_END);
+}
+
+static void qemu_gpio_init(void)
+{
+#ifdef SECURE_GPIO_BASE
+	pl061_gpio_init();
+	pl061_gpio_register(SECURE_GPIO_BASE, 0);
+#endif
+}
+
+void bl31_platform_setup(void)
+{
+	plat_qemu_gic_init();
+	qemu_gpio_init();
+}
+
+unsigned int plat_get_syscnt_freq2(void)
+{
+	return SYS_COUNTER_FREQ_IN_TICKS;
+}
+
+/*******************************************************************************
+ * 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;
+
+	assert(sec_state_is_valid(type));
+	next_image_info = (type == NON_SECURE)
+			? &bl33_image_ep_info : &bl32_image_ep_info;
+	/*
+	 * None of the images on the ARM development platforms can have 0x0
+	 * as the entrypoint
+	 */
+	if (next_image_info->pc)
+		return next_image_info;
+	else
+		return NULL;
+}