GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/board/emulation/qemu-arm/qemu-arm.c

@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2017 Tuomas Tynkkynen
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <virtio_types.h>
+#include <virtio.h>
+
+#ifdef CONFIG_ARM64
+#include <asm/armv8/mmu.h>
+
+static struct mm_region qemu_arm64_mem_map[] = {
+	{
+		/* Flash */
+		.virt = 0x00000000UL,
+		.phys = 0x00000000UL,
+		.size = 0x08000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	}, {
+		/* Lowmem peripherals */
+		.virt = 0x08000000UL,
+		.phys = 0x08000000UL,
+		.size = 0x38000000,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* RAM */
+		.virt = 0x40000000UL,
+		.phys = 0x40000000UL,
+		.size = 255UL * SZ_1G,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	}, {
+		/* Highmem PCI-E ECAM memory area */
+		.virt = 0x4010000000ULL,
+		.phys = 0x4010000000ULL,
+		.size = 0x10000000,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* Highmem PCI-E MMIO memory area */
+		.virt = 0x8000000000ULL,
+		.phys = 0x8000000000ULL,
+		.size = 0x8000000000ULL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		/* List terminator */
+		0,
+	}
+};
+
+struct mm_region *mem_map = qemu_arm64_mem_map;
+#endif
+
+int board_init(void)
+{
+	/*
+	 * Make sure virtio bus is enumerated so that peripherals
+	 * on the virtio bus can be discovered by their drivers
+	 */
+	virtio_init();
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	if (fdtdec_setup_mem_size_base() != 0)
+		return -EINVAL;
+
+	return 0;
+}
+
+int dram_init_banksize(void)
+{
+	fdtdec_setup_memory_banksize();
+
+	return 0;
+}
+
+void *board_fdt_blob_setup(void)
+{
+	/* QEMU loads a generated DTB for us at the start of RAM. */
+	return (void *)CONFIG_SYS_SDRAM_BASE;
+}