1 files changed, 48 insertions, 0 deletions
diff --git a/board/thead/th1520_lpi4a/spl.c b/board/thead/th1520_lpi4a/spl.c
new file mode 100644
index 00000000000..25dfa387c36
--- /dev/null
+++ b/board/thead/th1520_lpi4a/spl.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2025, Yao Zi <ziyao@disroot.org>
+ */
+
+#include <asm/io.h>
+#include <asm/spl.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/spl.h>
+#include <cpu_func.h>
+#include <dm.h>
+#include <hang.h>
+#include <spl.h>
+
+u32 spl_boot_device(void)
+{
+	/*
+	 * We don't bother to load proper U-Boot from an external device as
+	 * it fits in the integrated SRAM nicely.
+	 */
+	return BOOT_DEVICE_RAM;
+}
+
+void board_init_f(ulong dummy)
+{
+	int ret = spl_early_init();
+	struct udevice *dev;
+
+	if (ret)
+		panic("spl_early_init() failed %d\n", ret);
+
+	preloader_console_init();
+
+	/*
+	 * Manually bind CPU ahead of time to make sure in-core timers are
+	 * available in SPL.
+	 */
+	ret = uclass_get_device(UCLASS_CPU, 0, &dev);
+	if (ret)
+		panic("failed to bind CPU: %d\n", ret);
+
+	spl_dram_init();
+
+	icache_enable();
+	dcache_enable();
+
+	th1520_invalidate_pmp();
+}