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authorKyungmin Park <kmpark@infradead.org>2008-01-17 16:43:25 +0900
committerWolfgang Denk <wd@denx.de>2008-02-14 22:08:13 +0100
commit751b9b5189f3274b03c809172631316d6b002c82 (patch)
tree026f1808f4919d37b2d3855615041fb9d4bbcbc6 /onenand_ipl/onenand_boot.c
parent21f6f9636f0e978397548751347425fbf8d42bb3 (diff)
downloadu-boot-linaro-stable-751b9b5189f3274b03c809172631316d6b002c82.tar.gz
OneNAND Initial Program Loader (IPL) support
This patch enables the OneNAND boot within U-Boot. Before this work, we used another OneNAND IPL called X-Loader based on open source. With this work, we can build the oneboot.bin image without other program. The build sequence is simple. First, it compiles the u-boot.bin Second, it compiles OneNAND IPL Finally, it becomes the oneboot.bin from OneNAND IPL and u-boot.bin The mechanism is similar with NAND boot except it boots from itself. Another thing is that you can only use the OneNAND IPL only to work other bootloader such as RedBoot and so on. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Diffstat (limited to 'onenand_ipl/onenand_boot.c')
-rw-r--r--onenand_ipl/onenand_boot.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/onenand_ipl/onenand_boot.c b/onenand_ipl/onenand_boot.c
new file mode 100644
index 000000000..f30deaeca
--- /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 (;;);
+}