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Diffstat (limited to 'arch/nds32/lib/bootm.c')
-rw-r--r--arch/nds32/lib/bootm.c241
1 files changed, 241 insertions, 0 deletions
diff --git a/arch/nds32/lib/bootm.c b/arch/nds32/lib/bootm.c
new file mode 100644
index 000000000..b0a5a0dff
--- /dev/null
+++ b/arch/nds32/lib/bootm.c
@@ -0,0 +1,241 @@
+/*
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
+ * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
+ *
+ * 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;
+
+#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
+ defined(CONFIG_CMDLINE_TAG) || \
+ defined(CONFIG_INITRD_TAG) || \
+ defined(CONFIG_SERIAL_TAG) || \
+ defined(CONFIG_REVISION_TAG)
+static void setup_start_tag(bd_t *bd);
+
+# ifdef CONFIG_SETUP_MEMORY_TAGS
+static void setup_memory_tags(bd_t *bd);
+# endif
+static void setup_commandline_tag(bd_t *bd, char *commandline);
+
+# ifdef CONFIG_INITRD_TAG
+static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end);
+# endif
+static void setup_end_tag(bd_t *bd);
+
+static struct tag *params;
+#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
+
+int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
+{
+ bd_t *bd = gd->bd;
+ char *s;
+ int machid = bd->bi_arch_number;
+ void (*theKernel)(int zero, int arch, uint params);
+
+#ifdef CONFIG_CMDLINE_TAG
+ char *commandline = getenv("bootargs");
+#endif
+
+ if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
+ return 1;
+
+ theKernel = (void (*)(int, int, uint))images->ep;
+
+ s = getenv("machid");
+ if (s) {
+ machid = simple_strtoul(s, NULL, 16);
+ printf("Using machid 0x%x from environment\n", machid);
+ }
+
+ show_boot_progress(15);
+
+ debug("## Transferring control to Linux (at address %08lx) ...\n",
+ (ulong)theKernel);
+
+#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
+ defined(CONFIG_CMDLINE_TAG) || \
+ defined(CONFIG_INITRD_TAG) || \
+ defined(CONFIG_SERIAL_TAG) || \
+ defined(CONFIG_REVISION_TAG)
+ setup_start_tag(bd);
+#ifdef CONFIG_SERIAL_TAG
+ setup_serial_tag(&params);
+#endif
+#ifdef CONFIG_REVISION_TAG
+ setup_revision_tag(&params);
+#endif
+#ifdef CONFIG_SETUP_MEMORY_TAGS
+ setup_memory_tags(bd);
+#endif
+#ifdef CONFIG_CMDLINE_TAG
+ setup_commandline_tag(bd, commandline);
+#endif
+#ifdef CONFIG_INITRD_TAG
+ if (images->rd_start && images->rd_end)
+ setup_initrd_tag(bd, images->rd_start, images->rd_end);
+#endif
+ setup_end_tag(bd);
+#endif
+
+ /* we assume that the kernel is in place */
+ printf("\nStarting kernel ...\n\n");
+
+#ifdef CONFIG_USB_DEVICE
+ {
+ extern void udc_disconnect(void);
+ udc_disconnect();
+ }
+#endif
+
+ cleanup_before_linux();
+
+ theKernel(0, machid, bd->bi_boot_params);
+ /* does not return */
+
+ return 1;
+}
+
+
+#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
+ defined(CONFIG_CMDLINE_TAG) || \
+ defined(CONFIG_INITRD_TAG) || \
+ defined(CONFIG_SERIAL_TAG) || \
+ defined(CONFIG_REVISION_TAG)
+static void setup_start_tag(bd_t *bd)
+{
+ params = (struct tag *)bd->bi_boot_params;
+
+ params->hdr.tag = ATAG_CORE;
+ params->hdr.size = tag_size(tag_core);
+
+ params->u.core.flags = 0;
+ params->u.core.pagesize = 0;
+ params->u.core.rootdev = 0;
+
+ params = tag_next(params);
+}
+
+
+#ifdef CONFIG_SETUP_MEMORY_TAGS
+static void setup_memory_tags(bd_t *bd)
+{
+ int i;
+
+ for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+ params->hdr.tag = ATAG_MEM;
+ params->hdr.size = tag_size(tag_mem32);
+
+ params->u.mem.start = bd->bi_dram[i].start;
+ params->u.mem.size = bd->bi_dram[i].size;
+
+ params = tag_next(params);
+ }
+}
+#endif /* CONFIG_SETUP_MEMORY_TAGS */
+
+
+static void setup_commandline_tag(bd_t *bd, char *commandline)
+{
+ char *p;
+
+ if (!commandline)
+ return;
+
+ /* eat leading white space */
+ for (p = commandline; *p == ' '; p++)
+ ;
+
+ /* skip non-existent command lines so the kernel will still
+ * use its default command line.
+ */
+ if (*p == '\0')
+ return;
+
+ params->hdr.tag = ATAG_CMDLINE;
+ params->hdr.size =
+ (sizeof(struct tag_header) + strlen(p) + 1 + 4) >> 2;
+
+ strcpy(params->u.cmdline.cmdline, p)
+ ;
+
+ params = tag_next(params);
+}
+
+
+#ifdef CONFIG_INITRD_TAG
+static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end)
+{
+ /* an ATAG_INITRD node tells the kernel where the compressed
+ * ramdisk can be found. ATAG_RDIMG is a better name, actually.
+ */
+ params->hdr.tag = ATAG_INITRD2;
+ params->hdr.size = tag_size(tag_initrd);
+
+ params->u.initrd.start = initrd_start;
+ params->u.initrd.size = initrd_end - initrd_start;
+
+ params = tag_next(params);
+}
+#endif /* CONFIG_INITRD_TAG */
+
+#ifdef CONFIG_SERIAL_TAG
+void setup_serial_tag(struct tag **tmp)
+{
+ struct tag *params = *tmp;
+ struct tag_serialnr serialnr;
+ void get_board_serial(struct tag_serialnr *serialnr);
+
+ get_board_serial(&serialnr);
+ params->hdr.tag = ATAG_SERIAL;
+ params->hdr.size = tag_size(tag_serialnr);
+ params->u.serialnr.low = serialnr.low;
+ params->u.serialnr.high = serialnr.high;
+ params = tag_next(params);
+ *tmp = params;
+}
+#endif
+
+#ifdef CONFIG_REVISION_TAG
+void setup_revision_tag(struct tag **in_params)
+{
+ u32 rev = 0;
+ u32 get_board_rev(void);
+
+ rev = get_board_rev();
+ params->hdr.tag = ATAG_REVISION;
+ params->hdr.size = tag_size(tag_revision);
+ params->u.revision.rev = rev;
+ params = tag_next(params);
+}
+#endif /* CONFIG_REVISION_TAG */
+
+
+static void setup_end_tag(bd_t *bd)
+{
+ params->hdr.tag = ATAG_NONE;
+ params->hdr.size = 0;
+}
+
+#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
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