Merge branch 'master' of git://git.denx.de/u-boot-blackfin

1 files changed, 63 insertions, 0 deletions

diff --git a/lib_blackfin/boot.c b/lib_blackfin/boot.c
new file mode 100644
index 0000000..951d5b0
--- /dev/null
+++ b/lib_blackfin/boot.c
@@ -0,0 +1,63 @@
+/*
+ * U-boot - boot.c - misc boot helper functions
+ *
+ * Copyright (c) 2005-2008 Analog Devices Inc.
+ *
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <image.h>
+#include <asm/blackfin.h>
+
+#ifdef SHARED_RESOURCES
+extern void swap_to(int device_id);
+#endif
+
+static char *make_command_line(void)
+{
+	char *dest = (char *)CONFIG_LINUX_CMDLINE_ADDR;
+	char *bootargs = getenv("bootargs");
+
+	if (bootargs == NULL)
+		return NULL;
+
+	strncpy(dest, bootargs, CONFIG_LINUX_CMDLINE_SIZE);
+	dest[CONFIG_LINUX_CMDLINE_SIZE - 1] = 0;
+	return dest;
+}
+
+extern ulong bfin_poweron_retx;
+
+int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
+{
+	int	(*appl) (char *cmdline);
+	char	*cmdline;
+
+	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
+		return 1;
+
+#ifdef SHARED_RESOURCES
+	swap_to(FLASH);
+#endif
+
+	appl = (int (*)(char *))images->ep;
+
+	printf("Starting Kernel at = %p\n", appl);
+	cmdline = make_command_line();
+	icache_disable();
+	dcache_disable();
+	asm __volatile__(
+		"RETX = %[retx];"
+		"CALL (%0);"
+		:
+		: "p"(appl), "q0"(cmdline), [retx] "d"(bfin_poweron_retx)
+	);
+	/* does not return */
+
+	return 1;
+}