SPL: ONENAND: Support SPL to boot u-boot from OneNAND.

This patch will allow use SPL to boot an u-boot from the OneNAND.

Tested with IGEPv2 board with a OneNAND from Numonyx

Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
[trini: Add <spl.h> hunk to fix warning]
Signed-off-by: Tom Rini <trini@ti.com>

common/spl/Makefile

@@ -18,6 +18,7 @@ COBJS-$(CONFIG_SPL_FRAMEWORK) += spl.o
 COBJS-$(CONFIG_SPL_NOR_SUPPORT) += spl_nor.o
 COBJS-$(CONFIG_SPL_YMODEM_SUPPORT) += spl_ymodem.o
 COBJS-$(CONFIG_SPL_NAND_SUPPORT) += spl_nand.o
+COBJS-$(CONFIG_SPL_ONENAND_SUPPORT) += spl_onenand.o
 COBJS-$(CONFIG_SPL_NET_SUPPORT) += spl_net.o
 endif
 

common/spl/spl.c

@@ -197,6 +197,11 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
 		spl_nand_load_image();
 		break;
 #endif
+#ifdef CONFIG_SPL_ONENAND_SUPPORT
+	case BOOT_DEVICE_ONENAND:
+		spl_onenand_load_image();
+		break;
+#endif
 #ifdef CONFIG_SPL_NOR_SUPPORT
 	case BOOT_DEVICE_NOR:
 		spl_nor_load_image();

common/spl/spl_onenand.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2013
+ * ISEE 2007 SL - Enric Balletbo i Serra <eballetbo@iseebcn.com>
+ *
+ * Based on common/spl/spl_nand.c
+ * Copyright (C) 2011
+ * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
+ *
+ * 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 <config.h>
+#include <spl.h>
+#include <asm/io.h>
+#include <onenand_uboot.h>
+
+void spl_onenand_load_image(void)
+{
+	struct image_header *header;
+
+	debug("spl: onenand\n");
+
+	/*use CONFIG_SYS_TEXT_BASE as temporary storage area */
+	header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
+	/* Load u-boot */
+	onenand_spl_load_image(CONFIG_SYS_ONENAND_U_BOOT_OFFS,
+		CONFIG_SYS_ONENAND_PAGE_SIZE, (void *)header);
+	spl_parse_image_header(header);
+	onenand_spl_load_image(CONFIG_SYS_ONENAND_U_BOOT_OFFS,
+		spl_image.size, (void *)spl_image.load_addr);
+}

include/spl.h

@@ -59,6 +59,9 @@ void spl_display_print(void);
 /* NAND SPL functions */
 void spl_nand_load_image(void);
 
+/* OneNAND SPL functions */
+void spl_onenand_load_image(void);
+
 /* NOR SPL functions */
 void spl_nor_load_image(void);