openrisc: Add library functions
Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
diff --git a/arch/openrisc/lib/bootm.c b/arch/openrisc/lib/bootm.c
new file mode 100644
index 0000000..2c5d9ae
--- /dev/null
+++ b/arch/openrisc/lib/bootm.c
@@ -0,0 +1,84 @@
+/*
+ * (C) Copyright 2011 Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
+ *
+ * Based on microblaze implementation by:
+ * (C) Copyright 2007 Michal Simek
+ * (C) Copyright 2004 Atmark Techno, Inc.
+ *
+ * Michal SIMEK <monstr@monstr.eu>
+ * Yasushi SHOJI <yashi@atmark-techno.com>
+ *
+ * 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 <command.h>
+#include <image.h>
+#include <u-boot/zlib.h>
+#include <asm/byteorder.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int do_bootm_linux(int flag, int argc, char * const argv[],
+ bootm_headers_t *images)
+{
+ void (*kernel) (unsigned int);
+ ulong rd_data_start, rd_data_end;
+
+ if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
+ return 1;
+
+ int ret;
+
+ char *of_flat_tree = NULL;
+#if defined(CONFIG_OF_LIBFDT)
+ /* did generic code already find a device tree? */
+ if (images->ft_len)
+ of_flat_tree = images->ft_addr;
+#endif
+
+ kernel = (void (*)(unsigned int))images->ep;
+
+ /* find ramdisk */
+ ret = boot_get_ramdisk(argc, argv, images, IH_ARCH_OPENRISC,
+ &rd_data_start, &rd_data_end);
+ if (ret)
+ return 1;
+
+ show_boot_progress(15);
+
+ if (!of_flat_tree && argc > 3)
+ of_flat_tree = (char *)simple_strtoul(argv[3], NULL, 16);
+#ifdef DEBUG
+ printf("## Transferring control to Linux (at address 0x%08lx) " \
+ "ramdisk 0x%08lx, FDT 0x%08lx...\n",
+ (ulong) kernel, rd_data_start, (ulong) of_flat_tree);
+#endif
+ if (dcache_status() || icache_status())
+ flush_cache((ulong)kernel, max(checkdcache(), checkicache()));
+
+ /*
+ * Linux Kernel Parameters (passing device tree):
+ * r3: pointer to the fdt, followed by the board info data
+ */
+ kernel((unsigned int) of_flat_tree);
+ /* does not return */
+
+ return 1;
+}