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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2008-09-08 20:54:39 +0200
committerWolfgang Denk <wd@denx.de>2008-09-09 15:55:33 +0200
commit1de1fa408967cef6804bb046b904114519bb36f0 (patch)
treef9740d807b602d1bf37cfb66d287a71a3271e2dd /lib_mips
parentf5ed9e39088ecfa5a5f3ef47b08e5bda7890d764 (diff)
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qemu_mips: Update linux bootm to support dynamic cmdline
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'lib_mips')
-rw-r--r--lib_mips/Makefile4
-rw-r--r--lib_mips/bootm_qemu_mips.c76
2 files changed, 80 insertions, 0 deletions
diff --git a/lib_mips/Makefile b/lib_mips/Makefile
index 8176437..7967e58 100644
--- a/lib_mips/Makefile
+++ b/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)
diff --git a/lib_mips/bootm_qemu_mips.c b/lib_mips/bootm_qemu_mips.c
new file mode 100644
index 0000000..cc70fa9
--- /dev/null
+++ b/lib_mips/bootm_qemu_mips.c
@@ -0,0 +1,76 @@
+/*
+ * (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;
+}