amlogic: g12a: Add support for the S905X2 (G12A) platform
Introduce the preliminary support for the Amlogic S905X2 (G12A) SoC.
This port is a minimal implementation of BL31 capable of booting
mainline U-Boot and Linux. Tested on a SEI510 board.
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Change-Id: Ife958f10e815a4530292c45446adb71239f3367f
diff --git a/plat/amlogic/g12a/g12a_bl31_setup.c b/plat/amlogic/g12a/g12a_bl31_setup.c
new file mode 100644
index 0000000..77057a1
--- /dev/null
+++ b/plat/amlogic/g12a/g12a_bl31_setup.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <common/bl_common.h>
+#include <common/interrupt_props.h>
+#include <drivers/arm/gicv2.h>
+#include <lib/mmio.h>
+#include <lib/xlat_tables/xlat_mmu_helpers.h>
+#include <plat/common/platform.h>
+#include <platform_def.h>
+
+#include "aml_private.h"
+
+/*
+ * Placeholder variables for copying the arguments that have been passed to
+ * BL31 from BL2.
+ */
+static entry_point_info_t bl32_image_ep_info;
+static entry_point_info_t bl33_image_ep_info;
+static image_info_t bl30_image_info;
+static image_info_t bl301_image_info;
+
+/*******************************************************************************
+ * Return a pointer to the 'entry_point_info' structure of the next image for
+ * the security state specified. BL33 corresponds to the non-secure image type
+ * while BL32 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_image_ep_info : &bl32_image_ep_info;
+
+ /* None of the images can have 0x0 as the entrypoint. */
+ if (next_image_info->pc != 0U)
+ return next_image_info;
+
+ return NULL;
+}
+
+/*******************************************************************************
+ * Perform any BL31 early platform setup. 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. BL2 has flushed this information to memory, so we are guaranteed
+ * to pick up good data.
+ ******************************************************************************/
+struct g12a_bl31_param {
+ param_header_t h;
+ image_info_t *bl31_image_info;
+ entry_point_info_t *bl32_ep_info;
+ image_info_t *bl32_image_info;
+ entry_point_info_t *bl33_ep_info;
+ image_info_t *bl33_image_info;
+ image_info_t *scp_image_info[];
+};
+
+void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
+ u_register_t arg2, u_register_t arg3)
+{
+ struct g12a_bl31_param *from_bl2;
+
+ /* Initialize the console to provide early debug support */
+ aml_console_init();
+
+ from_bl2 = (struct g12a_bl31_param *)arg0;
+
+ /* Check params passed from BL2 are not NULL. */
+ assert(from_bl2 != NULL);
+ assert(from_bl2->h.type == PARAM_BL31);
+ assert(from_bl2->h.version >= VERSION_1);
+
+ /*
+ * Copy BL32 and BL33 entry point information. It is stored in Secure
+ * RAM, in BL2's address space.
+ */
+ bl32_image_ep_info = *from_bl2->bl32_ep_info;
+ bl33_image_ep_info = *from_bl2->bl33_ep_info;
+
+ if (bl33_image_ep_info.pc == 0U) {
+ ERROR("BL31: BL33 entrypoint not obtained from BL2\n");
+ panic();
+ }
+
+ bl30_image_info = *from_bl2->scp_image_info[0];
+ bl301_image_info = *from_bl2->scp_image_info[1];
+}
+
+void bl31_plat_arch_setup(void)
+{
+ aml_setup_page_tables();
+
+ enable_mmu_el3(0);
+}
+
+/*******************************************************************************
+ * GICv2 driver setup information
+ ******************************************************************************/
+static const interrupt_prop_t g12a_interrupt_props[] = {
+ INTR_PROP_DESC(IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY,
+ GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+ INTR_PROP_DESC(IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY,
+ GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+ INTR_PROP_DESC(IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY,
+ GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+ INTR_PROP_DESC(IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY,
+ GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+ INTR_PROP_DESC(IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY,
+ GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+ INTR_PROP_DESC(IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY,
+ GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+ INTR_PROP_DESC(IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY,
+ GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+ INTR_PROP_DESC(IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY,
+ GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
+ INTR_PROP_DESC(IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY,
+ GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL)
+};
+
+static const gicv2_driver_data_t g12a_gic_data = {
+ .gicd_base = AML_GICD_BASE,
+ .gicc_base = AML_GICC_BASE,
+ .interrupt_props = g12a_interrupt_props,
+ .interrupt_props_num = ARRAY_SIZE(g12a_interrupt_props)
+};
+
+void bl31_platform_setup(void)
+{
+ aml_mhu_secure_init();
+
+ gicv2_driver_init(&g12a_gic_data);
+ gicv2_distif_init();
+ gicv2_pcpu_distif_init();
+ gicv2_cpuif_enable();
+}