Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / blackfin / lib / boot.c

diff --git a/qemu/roms/u-boot/arch/blackfin/lib/boot.c b/qemu/roms/u-boot/arch/blackfin/lib/boot.c
new file mode 100644 (file)
index 0000000..5644d58
--- /dev/null
+++ b/qemu/roms/u-boot/arch/blackfin/lib/boot.c
@@ -0,0 +1,74 @@
+/*
+ * 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
+
+#ifdef CONFIG_VIDEO
+extern void video_stop(void);
+#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 * const argv[], bootm_headers_t *images)
+{
+       int     (*appl) (char *cmdline);
+       char    *cmdline;
+
+       if (flag & BOOTM_STATE_OS_PREP)
+               return 0;
+       if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
+               return 1;
+
+#ifdef SHARED_RESOURCES
+       swap_to(FLASH);
+#endif
+
+#ifdef CONFIG_VIDEO
+       /* maybe this should be standardized and moved to bootm ... */
+       video_stop();
+#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;
+}