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

mcu/riscv/common/Makefile

@@ -0,0 +1 @@
+SRCS-y += common.c

mcu/riscv/common/common.c

@@ -0,0 +1,46 @@
+
+#include <stddef.h>
+#include <common.h>
+#include <time.h>
+
+void wait_stage2_ready(void)
+{
+	int c = 0;
+
+	while (readl(REG_SC_SYSBOOT7) != 0xbeef0001) {
+		udelay(1);
+		if (c > 0 && (c % (1000 * 1000 * 2)) == 0) {
+			puts("Waiting firmware ready!\n");
+		}
+		c++;
+	}
+}
+
+int run_stage2_func(int (*func)(void))
+{
+	int ret;
+
+	__DSB();
+	__ISB();
+
+	puts("Check firmware...\n");
+
+	wait_stage2_ready();
+
+	rv32_dcache_disable();
+	rv32_icache_disable();
+
+
+	if (readl((ulong *)__bin_end_pad) != CONFIG_BIN_END_PAD) {
+		puts("Firmware ERROR!\n");
+		return -1;
+	}
+
+	rv32_icache_enable();
+	rv32_dcache_enable();
+
+	puts("Run 0x");puthex((u32)func);puts("\n");
+	ret = func();
+
+	return ret;
+}