allwinner: Introduce basic platform support
This platform supports Allwinner's SoCs with ARMv8 cores. So far they
all sport a single cluster of Cortex-A53 cores.
"sunxi" is the original code name used for this platform, and since it
appears in the Linux kernel and in U-Boot as well, we use it here as a
short file name prefix and for identifiers.
This port includes BL31 support only. U-Boot's SPL takes the role of the
primary loader, also doing the DRAM initialization. It then loads the
rest of the firmware, namely ATF and U-Boot (BL33), then hands execution
over to ATF.
This commit includes the basic platform code shared across all SoCs.
There is no platform.mk yet.
[Andre: moved files into proper directories, supported RESET_TO_BL31,
various clean ups and simplifications ]
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/allwinner/common/sunxi_bl31_setup.c b/plat/allwinner/common/sunxi_bl31_setup.c
new file mode 100644
index 0000000..6331238
--- /dev/null
+++ b/plat/allwinner/common/sunxi_bl31_setup.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <assert.h>
+#include <console.h>
+#include <debug.h>
+#include <generic_delay_timer.h>
+#include <gicv2.h>
+#include <platform.h>
+#include <platform_def.h>
+#include <sunxi_def.h>
+#include <sunxi_mmap.h>
+#include <uart_16550.h>
+
+#include "sunxi_private.h"
+
+static entry_point_info_t bl33_image_ep_info;
+
+static console_16550_t console;
+
+static const gicv2_driver_data_t sunxi_gic_data = {
+ .gicd_base = SUNXI_GICD_BASE,
+ .gicc_base = SUNXI_GICC_BASE,
+};
+
+void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
+ u_register_t arg2, u_register_t arg3)
+{
+ /* Initialize the debug console as soon as possible */
+ console_16550_register(SUNXI_UART0_BASE, SUNXI_UART0_CLK_IN_HZ,
+ SUNXI_UART0_BAUDRATE, &console);
+
+ /* Populate entry point information for BL33 */
+ SET_PARAM_HEAD(&bl33_image_ep_info, PARAM_EP, VERSION_1, 0);
+ /*
+ * Tell BL31 where the non-trusted software image
+ * is located and the entry state information
+ */
+ bl33_image_ep_info.pc = plat_get_ns_image_entrypoint();
+ bl33_image_ep_info.spsr = SPSR_64(MODE_EL2, MODE_SP_ELX,
+ DISABLE_ALL_EXCEPTIONS);
+ SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);
+}
+
+void bl31_plat_arch_setup(void)
+{
+ sunxi_configure_mmu_el3(0);
+}
+
+void bl31_platform_setup(void)
+{
+ generic_delay_timer_init();
+
+ /* Configure the interrupt controller */
+ gicv2_driver_init(&sunxi_gic_data);
+ gicv2_distif_init();
+ gicv2_pcpu_distif_init();
+ gicv2_cpuif_enable();
+
+ INFO("BL31: Platform setup done\n");
+}
+
+entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
+{
+ assert(sec_state_is_valid(type) != 0);
+ assert(type == NON_SECURE);
+
+ return &bl33_image_ep_info;
+}