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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
+ * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
+ * Rick Chen, Andes Technology Corporation <rick@andestech.com>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <dm.h>
+#include <dm/root.h>
+#include <image.h>
+#include <asm/byteorder.h>
+#include <asm/csr.h>
+#include <asm/smp.h>
+#include <dm/device.h>
+#include <dm/root.h>
+#include <u-boot/zlib.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+__weak void board_quiesce_devices(void)
+{
+}
+
+int arch_fixup_fdt(void *blob)
+{
+	return 0;
+}
+
+/**
+ * announce_and_cleanup() - Print message and prepare for kernel boot
+ *
+ * @fake: non-zero to do everything except actually boot
+ */
+static void announce_and_cleanup(int fake)
+{
+	printf("\nStarting kernel ...%s\n\n", fake ?
+		"(fake run for tracing)" : "");
+	bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
+#ifdef CONFIG_BOOTSTAGE_FDT
+	bootstage_fdt_add_report();
+#endif
+#ifdef CONFIG_BOOTSTAGE_REPORT
+	bootstage_report();
+#endif
+
+#ifdef CONFIG_USB_DEVICE
+	udc_disconnect();
+#endif
+
+	board_quiesce_devices();
+
+	/*
+	 * Call remove function of all devices with a removal flag set.
+	 * This may be useful for last-stage operations, like cancelling
+	 * of DMA operation or releasing device internal buffers.
+	 */
+	dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
+
+	cleanup_before_linux();
+}
+
+static void boot_prep_linux(bootm_headers_t *images)
+{
+	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
+#ifdef CONFIG_OF_LIBFDT
+		debug("using: FDT\n");
+		if (image_setup_linux(images)) {
+			printf("FDT creation failed! hanging...");
+			hang();
+		}
+#endif
+	} else {
+		printf("Device tree not found or missing FDT support\n");
+		hang();
+	}
+}
+
+static void boot_jump_linux(bootm_headers_t *images, int flag)
+{
+	void (*kernel)(ulong hart, void *dtb);
+	int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
+#ifdef CONFIG_SMP
+	int ret;
+#endif
+
+	kernel = (void (*)(ulong, void *))images->ep;
+
+	bootstage_mark(BOOTSTAGE_ID_RUN_OS);
+
+	debug("## Transferring control to kernel (at address %08lx) ...\n",
+	      (ulong)kernel);
+
+	announce_and_cleanup(fake);
+
+	if (!fake) {
+		if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
+#ifdef CONFIG_SMP
+			ret = smp_call_function(images->ep,
+						(ulong)images->ft_addr, 0, 0);
+			if (ret)
+				hang();
+#endif
+			kernel(gd->arch.boot_hart, images->ft_addr);
+		}
+	}
+}
+
+int do_bootm_linux(int flag, int argc, char * const argv[],
+		   bootm_headers_t *images)
+{
+	/* No need for those on RISC-V */
+	if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
+		return -1;
+
+	if (flag & BOOTM_STATE_OS_PREP) {
+		boot_prep_linux(images);
+		return 0;
+	}
+
+	if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
+		boot_jump_linux(images, flag);
+		return 0;
+	}
+
+	boot_prep_linux(images);
+	boot_jump_linux(images, flag);
+	return 0;
+}
+
+int do_bootm_vxworks(int flag, int argc, char * const argv[],
+		     bootm_headers_t *images)
+{
+	return do_bootm_linux(flag, argc, argv, images);
+}