OneNAND Initial Program Loader (IPL) support

[u-boot] / onenand_ipl / onenand_boot.c

diff --git a/onenand_ipl/onenand_boot.c b/onenand_ipl/onenand_boot.c
new file mode 100644 (file)
index 0000000..f30deae
--- /dev/null
+++ b/onenand_ipl/onenand_boot.c
@@ -0,0 +1,81 @@
+/*
+ * (C) Copyright 2005-2008 Samsung Electronics
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ *
+ * Derived from x-loader
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <version.h>
+
+#include "onenand_ipl.h"
+
+#ifdef CFG_PRINTF
+int print_info(void)
+{
+       printf(XLOADER_VERSION);
+
+       return 0;
+}
+#endif
+
+typedef int (init_fnc_t)(void);
+
+init_fnc_t *init_sequence[] = {
+       board_init,             /* basic board dependent setup */
+#ifdef CFG_PRINTF
+       serial_init,            /* serial communications setup */
+       print_info,
+#endif
+       NULL,
+};
+
+void start_oneboot(void)
+{
+       init_fnc_t **init_fnc_ptr;
+       uchar *buf;
+
+       for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
+               if ((*init_fnc_ptr)() != 0)
+                       hang();
+       }
+
+       buf = (uchar *) CFG_LOAD_ADDR;
+
+       if (!onenand_read_block(buf, ONENAND_START_BLOCK))
+               buf += ONENAND_BLOCK_SIZE;
+
+       if (buf == (uchar *)CFG_LOAD_ADDR)
+               hang();
+
+       /* go run U-Boot and never return */
+       printf("Starting OS Bootloader...\n");
+       ((init_fnc_t *)CFG_LOAD_ADDR)();
+
+       /* should never come here */
+}
+
+void hang(void)
+{
+       /* if board_hang() returns, hange here */
+       printf("X-Loader hangs\n");
+       for (;;);
+}