Implement new command cmosdump.

ChangeLog

@@ -1,3 +1,7 @@
+2013-02-24  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	Implement new command cmosdump.
+
 2013-02-19  Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
 
 	Support Openfirmware disks with non-512B sectors.

grub-core/Makefile.core.def

@@ -509,6 +509,12 @@ module = {
   enable = cmos;
 };
 
+module = {
+  name = cmosdump;
+  common = commands/i386/cmosdump.c;
+  enable = cmos;
+};
+
 module = {
   name = iorw;
   common = commands/iorw.c;

grub-core/commands/i386/cmosdump.c

@@ -0,0 +1,64 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009,2013  Free Software Foundation, Inc.
+ *
+ *  GRUB 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/dl.h>
+#include <grub/command.h>
+#include <grub/misc.h>
+#include <grub/cmos.h>
+#include <grub/i18n.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+static grub_err_t
+grub_cmd_cmosdump (struct grub_command *cmd __attribute__ ((unused)),
+		   int argc __attribute__ ((unused)), char *argv[] __attribute__ ((unused)))
+{
+  int i;
+
+  for (i = 0; i < 256; i++)
+    {
+      grub_err_t err;
+      grub_uint8_t value;
+      if ((i & 0xf) == 0)
+	grub_printf ("%02x: ", i);
+
+      err = grub_cmos_read (i, &value);
+      if (err)
+	return err;
+
+      grub_printf ("%02x ", value);
+      if ((i & 0xf) == 0xf)
+	grub_printf ("\n");
+    }
+  return GRUB_ERR_NONE;
+}
+
+static grub_command_t cmd;
+
+
+GRUB_MOD_INIT(cmosdump)
+{
+  cmd = grub_register_command ("cmosdump", grub_cmd_cmosdump,
+			       0,
+			       N_("Dump CMOS contents."));
+}
+
+GRUB_MOD_FINI(cmosdump)
+{
+  grub_unregister_command (cmd);
+}

include/grub/cmos.h

@@ -61,16 +61,32 @@ grub_num_to_bcd (grub_uint8_t a)
 static inline grub_err_t
 grub_cmos_read (grub_uint8_t index, grub_uint8_t *val)
 {
-  grub_outb (index, GRUB_CMOS_ADDR_REG);
-  *val = grub_inb (GRUB_CMOS_DATA_REG);
+  if (index & 0x80)
+    {
+      grub_outb (index & 0x7f, GRUB_CMOS_ADDR_REG_HI);
+      *val = grub_inb (GRUB_CMOS_DATA_REG_HI);
+    }
+  else
+    {
+      grub_outb (index & 0x7f, GRUB_CMOS_ADDR_REG);
+      *val = grub_inb (GRUB_CMOS_DATA_REG);
+    }
   return GRUB_ERR_NONE;
 }
 
 static inline grub_err_t
 grub_cmos_write (grub_uint8_t index, grub_uint8_t value)
 {
-  grub_outb (index, GRUB_CMOS_ADDR_REG);
-  grub_outb (value, GRUB_CMOS_DATA_REG);
+  if (index & 0x80)
+    {
+      grub_outb (index & 0x7f, GRUB_CMOS_ADDR_REG_HI);
+      grub_outb (value, GRUB_CMOS_DATA_REG_HI);
+    }
+  else
+    {
+      grub_outb (index & 0x7f, GRUB_CMOS_ADDR_REG);
+      grub_outb (value, GRUB_CMOS_DATA_REG);
+    }
   return GRUB_ERR_NONE;
 }
 #else

include/grub/i386/cmos.h

@@ -24,5 +24,7 @@
 
 #define GRUB_CMOS_ADDR_REG	0x70
 #define GRUB_CMOS_DATA_REG	0x71
+#define GRUB_CMOS_ADDR_REG_HI	0x72
+#define GRUB_CMOS_DATA_REG_HI	0x73
 
 #endif /* GRUB_CPU_CMOS_H */

include/grub/mips/loongson/cmos.h

@@ -24,5 +24,7 @@
 
 #define GRUB_CMOS_ADDR_REG	0xbfd00070
 #define GRUB_CMOS_DATA_REG	0xbfd00071
+#define GRUB_CMOS_ADDR_REG	0xbfd00072
+#define GRUB_CMOS_DATA_REG	0xbfd00073
 
 #endif /* GRUB_CPU_CMOS_H */

include/grub/mips/qemu_mips/cmos.h

@@ -24,5 +24,7 @@
 
 #define GRUB_CMOS_ADDR_REG	0xb4000070
 #define GRUB_CMOS_DATA_REG	0xb4000071
+#define GRUB_CMOS_ADDR_REG_HI	0xb4000072
+#define GRUB_CMOS_DATA_REG_HI	0xb4000073
 
 #endif /* GRUB_CPU_CMOS_H */