1 files changed, 240 insertions, 0 deletions
diff --git a/lib_avr32/bootm.c b/lib_avr32/bootm.c
new file mode 100644
index 0000000..b1c651a
--- /dev/null
+++ b/lib_avr32/bootm.c
@@ -0,0 +1,240 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * 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 <zlib.h>
+#include <asm/byteorder.h>
+#include <asm/addrspace.h>
+#include <asm/io.h>
+#include <asm/setup.h>
+#include <asm/arch/clk.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* CPU-specific hook to allow flushing of caches, etc. */
+extern void prepare_to_boot(void);
+
+extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
+static struct tag *setup_start_tag(struct tag *params)
+{
+	params->hdr.tag = ATAG_CORE;
+	params->hdr.size = tag_size(tag_core);
+
+	params->u.core.flags = 0;
+	params->u.core.pagesize = 4096;
+	params->u.core.rootdev = 0;
+
+	return tag_next(params);
+}
+
+static struct tag *setup_memory_tags(struct tag *params)
+{
+	bd_t *bd = gd->bd;
+	int i;
+
+	for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
+		params->hdr.tag = ATAG_MEM;
+		params->hdr.size = tag_size(tag_mem_range);
+
+		params->u.mem_range.addr = bd->bi_dram[i].start;
+		params->u.mem_range.size = bd->bi_dram[i].size;
+
+		params = tag_next(params);
+	}
+
+	return params;
+}
+
+static struct tag *setup_commandline_tag(struct tag *params, char *cmdline)
+{
+	if (!cmdline)
+		return params;
+
+	/* eat leading white space */
+	while (*cmdline == ' ') cmdline++;
+
+	/*
+	 * Don't include tags for empty command lines; let the kernel
+	 * use its default command line.
+	 */
+	if (*cmdline == '\0')
+		return params;
+
+	params->hdr.tag = ATAG_CMDLINE;
+	params->hdr.size =
+		(sizeof (struct tag_header) + strlen(cmdline) + 1 + 3) >> 2;
+	strcpy(params->u.cmdline.cmdline, cmdline);
+
+	return tag_next(params);
+}
+
+static struct tag *setup_ramdisk_tag(struct tag *params,
+				     unsigned long rd_start,
+				     unsigned long rd_end)
+{
+	if (rd_start == rd_end)
+		return params;
+
+	params->hdr.tag = ATAG_RDIMG;
+	params->hdr.size = tag_size(tag_mem_range);
+
+	params->u.mem_range.addr = rd_start;
+	params->u.mem_range.size = rd_end - rd_start;
+
+	return tag_next(params);
+}
+
+static struct tag *setup_clock_tags(struct tag *params)
+{
+	params->hdr.tag = ATAG_CLOCK;
+	params->hdr.size = tag_size(tag_clock);
+	params->u.clock.clock_id = ACLOCK_BOOTCPU;
+	params->u.clock.clock_flags = 0;
+	params->u.clock.clock_hz = gd->cpu_hz;
+
+#ifdef CONFIG_AT32AP7000
+	/*
+	 * New kernels don't need this, but we should be backwards
+	 * compatible for a while...
+	 */
+	params = tag_next(params);
+
+	params->hdr.tag = ATAG_CLOCK;
+	params->hdr.size = tag_size(tag_clock);
+	params->u.clock.clock_id = ACLOCK_HSB;
+	params->u.clock.clock_flags = 0;
+	params->u.clock.clock_hz = get_hsb_clk_rate();
+#endif
+
+	return tag_next(params);
+}
+
+static struct tag *setup_ethernet_tag(struct tag *params,
+				      char *addr, int index)
+{
+	char *s, *e;
+	int i;
+
+	params->hdr.tag = ATAG_ETHERNET;
+	params->hdr.size = tag_size(tag_ethernet);
+
+	params->u.ethernet.mac_index = index;
+	params->u.ethernet.mii_phy_addr = gd->bd->bi_phy_id[index];
+
+	s = addr;
+	for (i = 0; i < 6; i++) {
+		params->u.ethernet.hw_address[i] = simple_strtoul(s, &e, 16);
+		s = e + 1;
+	}
+
+	return tag_next(params);
+}
+
+static struct tag *setup_ethernet_tags(struct tag *params)
+{
+	char name[16] = "ethaddr";
+	char *addr;
+	int i = 0;
+
+	do {
+		addr = getenv(name);
+		if (addr)
+			params = setup_ethernet_tag(params, addr, i);
+		sprintf(name, "eth%daddr", ++i);
+	} while (i < 4);
+
+	return params;
+}
+
+static void setup_end_tag(struct tag *params)
+{
+	params->hdr.tag = ATAG_NONE;
+	params->hdr.size = 0;
+}
+
+void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
+		    bootm_headers_t *images)
+{
+	ulong	initrd_start, initrd_end;
+	ulong	ep = 0;
+	void	(*theKernel)(int magic, void *tagtable);
+	struct	tag *params, *params_start;
+	char	*commandline = getenv("bootargs");
+	int	ret;
+
+	/* find kernel entry point */
+	if (images->legacy_hdr_valid) {
+		ep = image_get_ep (images->legacy_hdr_os);
+#if defined(CONFIG_FIT)
+	} else if (images->fit_uname_os) {
+		ret = fit_image_get_entry (images->fit_hdr_os,
+				images->fit_noffset_os, &ep);
+		if (ret) {
+			puts ("Can't get entry point property!\n");
+			goto error;
+		}
+#endif
+	} else {
+		puts ("Could not find kernel entry point!\n");
+		goto error;
+	}
+	theKernel = (void *)ep;
+
+	ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_AVR32,
+			&initrd_start, &initrd_end);
+	if (ret)
+		goto error;
+
+	show_boot_progress (15);
+
+	params = params_start = (struct tag *)gd->bd->bi_boot_params;
+	params = setup_start_tag(params);
+	params = setup_memory_tags(params);
+	if (initrd_start) {
+		params = setup_ramdisk_tag(params,
+					   PHYSADDR(initrd_start),
+					   PHYSADDR(initrd_end));
+	}
+	params = setup_commandline_tag(params, commandline);
+	params = setup_clock_tags(params);
+	params = setup_ethernet_tags(params);
+	setup_end_tag(params);
+
+	if (!images->autostart)
+		return ;
+
+	printf("\nStarting kernel at %p (params at %p)...\n\n",
+	       theKernel, params_start);
+
+	prepare_to_boot();
+
+	theKernel(ATAG_MAGIC, params_start);
+	/* does not return */
+	return;
+
+error:
+	if (images->autostart)
+		do_reset (cmdtp, flag, argc, argv);
+	return;
+}