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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2016 Beniamino Galvani <b.galvani@gmail.com>
+ */
+
+#include <common.h>
+#include <init.h>
+#include <asm/arch/boot.h>
+#include <env.h>
+#include <linux/libfdt.h>
+#include <linux/err.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/sm.h>
+#include <asm/armv8/mmu.h>
+#include <asm/unaligned.h>
+#include <efi_loader.h>
+#include <u-boot/crc.h>
+
+#if CONFIG_IS_ENABLED(FASTBOOT)
+#include <asm/psci.h>
+#include <fastboot.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+__weak int board_init(void)
+{
+	return 0;
+}
+
+int dram_init(void)
+{
+	const fdt64_t *val;
+	int offset;
+	int len;
+
+	offset = fdt_path_offset(gd->fdt_blob, "/memory");
+	if (offset < 0)
+		return -EINVAL;
+
+	val = fdt_getprop(gd->fdt_blob, offset, "reg", &len);
+	if (len < sizeof(*val) * 2)
+		return -EINVAL;
+
+	/* Use unaligned access since cache is still disabled */
+	gd->ram_size = get_unaligned_be64(&val[1]);
+
+	return 0;
+}
+
+__weak int meson_ft_board_setup(void *blob, bd_t *bd)
+{
+	return 0;
+}
+
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	meson_init_reserved_memory(blob);
+
+	return meson_ft_board_setup(blob, bd);
+}
+
+void meson_board_add_reserved_memory(void *fdt, u64 start, u64 size)
+{
+	int ret;
+
+	ret = fdt_add_mem_rsv(fdt, start, size);
+	if (ret)
+		printf("Could not reserve zone @ 0x%llx\n", start);
+
+	if (IS_ENABLED(CONFIG_EFI_LOADER)) {
+		efi_add_memory_map(start,
+				   ALIGN(size, EFI_PAGE_SIZE) >> EFI_PAGE_SHIFT,
+				   EFI_RESERVED_MEMORY_TYPE, false);
+	}
+}
+
+int meson_generate_serial_ethaddr(void)
+{
+	u8 mac_addr[ARP_HLEN];
+	char serial[SM_SERIAL_SIZE];
+	u32 sid;
+	u16 sid16;
+
+	if (!meson_sm_get_serial(serial, SM_SERIAL_SIZE)) {
+		sid = crc32(0, (unsigned char *)serial, SM_SERIAL_SIZE);
+		sid16 = crc16_ccitt(0, (unsigned char *)serial,	SM_SERIAL_SIZE);
+
+		/* Ensure the NIC specific bytes of the mac are not all 0 */
+		if ((sid & 0xffffff) == 0)
+			sid |= 0x800000;
+
+		/* Non OUI / registered MAC address */
+		mac_addr[0] = ((sid16 >> 8) & 0xfc) | 0x02;
+		mac_addr[1] = (sid16 >>  0) & 0xff;
+		mac_addr[2] = (sid >> 24) & 0xff;
+		mac_addr[3] = (sid >> 16) & 0xff;
+		mac_addr[4] = (sid >>  8) & 0xff;
+		mac_addr[5] = (sid >>  0) & 0xff;
+
+		eth_env_set_enetaddr("ethaddr", mac_addr);
+	} else
+		return -EINVAL;
+
+	return 0;
+}
+
+static void meson_set_boot_source(void)
+{
+	const char *source;
+
+	switch (meson_get_boot_device()) {
+	case BOOT_DEVICE_EMMC:
+		source = "emmc";
+		break;
+
+	case BOOT_DEVICE_NAND:
+		source = "nand";
+		break;
+
+	case BOOT_DEVICE_SPI:
+		source = "spi";
+		break;
+
+	case BOOT_DEVICE_SD:
+		source = "sd";
+		break;
+
+	case BOOT_DEVICE_USB:
+		source = "usb";
+		break;
+
+	default:
+		source = "unknown";
+	}
+
+	env_set("boot_source", source);
+}
+
+__weak int meson_board_late_init(void)
+{
+	return 0;
+}
+
+int board_late_init(void)
+{
+	meson_set_boot_source();
+
+	return meson_board_late_init();
+}
+
+#if CONFIG_IS_ENABLED(FASTBOOT)
+static unsigned int reboot_reason = REBOOT_REASON_NORMAL;
+
+int fastboot_set_reboot_flag()
+{
+	reboot_reason = REBOOT_REASON_BOOTLOADER;
+
+	printf("Using reboot reason: 0x%x\n", reboot_reason);
+
+	return 0;
+}
+
+void reset_cpu(ulong addr)
+{
+	struct pt_regs regs;
+
+	regs.regs[0] = ARM_PSCI_0_2_FN_SYSTEM_RESET;
+	regs.regs[1] = reboot_reason;
+
+	printf("Rebooting with reason: 0x%lx\n", regs.regs[1]);
+
+	smc_call(&regs);
+
+	while (1)
+		;
+}
+#else
+void reset_cpu(ulong addr)
+{
+	psci_system_reset();
+}
+#endif