qemu_mips: Update linux bootm to support dynamic cmdline

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

lib_mips/Makefile

@@ -28,7 +28,11 @@ LIB	= $(obj)lib$(ARCH).a
 SOBJS-y	+=
 
 COBJS-y	+= board.o
+ifeq ($(CONFIG_QEMU_MIPS),y)
+COBJS-y	+= bootm_qemu_mips.o
+else
 COBJS-y	+= bootm.o
+endif
 COBJS-y	+= time.o
 
 SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)

lib_mips/bootm_qemu_mips.c

+/*
+ * (C) Copyright 2008
+ * Jean-Christophe PLAGNIOL-VILLARD <jcplagniol@jcrosoft.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 <asm/byteorder.h>
+#include <asm/addrspace.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
+{
+	void	(*theKernel) (int, char **, char **, int *);
+	char	*bootargs = getenv ("bootargs");
+	char	*start;
+	uint	len;
+
+	/* find kernel entry point */
+	theKernel = (void (*)(int, char **, char **, int *))images->ep;
+
+	show_boot_progress (15);
+
+	debug ("## Transferring control to Linux (at address %08lx) ...\n",
+		(ulong) theKernel);
+
+	gd->bd->bi_boot_params = gd->bd->bi_memstart + (16 << 20) - 256;
+	debug ("%-12s= 0x%08lX\n", "boot_params", (ulong)gd->bd->bi_boot_params);
+
+	/* set Magic */
+	*(int32_t *)(gd->bd->bi_boot_params - 4) = 0x12345678;
+	/* set ram_size */
+	*(int32_t *)(gd->bd->bi_boot_params - 8) = gd->ram_size;
+
+	start = (char*)gd->bd->bi_boot_params;
+
+	len = strlen(bootargs);
+
+	strncpy(start, bootargs, len + 1);
+
+	start += len;
+
+	len = images->rd_end - images->rd_start;
+	if (len > 0) {
+		start += sprintf(start," rd_start=0x%08X rd_size=0x%0X",
+		(uint) UNCACHED_SDRAM (images->rd_start),
+		(uint) len);
+	}
+
+	/* we assume that the kernel is in place */
+	printf ("\nStarting kernel ...\n\n");
+
+	theKernel (0, NULL, NULL, 0);
+	/* does not return */
+	return 1;
+}