[vmware] Expose GuestRPC mechanism in 64-bit builds

The GuestRPC mechanism (used for VMWARE_SETTINGS and CONSOLE_VMWARE)
does not use any real-mode code and so can be exposed in both 64-bit
and 32-bit builds.

Reported-by: Matthew Helton <mwhelton@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 138 insertions, 0 deletions

diff --git a/src/arch/x86/interface/vmware/vmconsole.c b/src/arch/x86/interface/vmware/vmconsole.c
new file mode 100644
index 000000000..f7df4f75b
--- /dev/null
+++ b/src/arch/x86/interface/vmware/vmconsole.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+/** @file
+ *
+ * VMware logfile console
+ *
+ */
+
+#include <string.h>
+#include <ipxe/console.h>
+#include <ipxe/lineconsole.h>
+#include <ipxe/init.h>
+#include <ipxe/guestrpc.h>
+#include <config/console.h>
+
+/** VMware logfile console buffer size */
+#define VMCONSOLE_BUFSIZE 128
+
+/* Set default console usage if applicable */
+#if ! ( defined ( CONSOLE_VMWARE ) && CONSOLE_EXPLICIT ( CONSOLE_VMWARE ) )
+#undef CONSOLE_VMWARE
+#define CONSOLE_VMWARE ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_TUI )
+#endif
+
+/** VMware logfile console GuestRPC channel */
+static int vmconsole_channel;
+
+/** VMware logfile console line buffer */
+static struct {
+	char prefix[4];
+	char message[VMCONSOLE_BUFSIZE];
+} vmconsole_buffer = {
+	.prefix = "log ",
+};
+
+/** VMware logfile console ANSI escape sequence handlers */
+static struct ansiesc_handler vmconsole_handlers[] = {
+	{ 0, NULL }
+};
+
+/** VMware logfile line console */
+static struct line_console vmconsole_line = {
+	.buffer = vmconsole_buffer.message,
+	.len = sizeof ( vmconsole_buffer.message ),
+	.ctx = {
+		.handlers = vmconsole_handlers,
+	},
+};
+
+/** VMware logfile console recursion marker */
+static int vmconsole_entered;
+
+/**
+ * Print a character to VMware logfile console
+ *
+ * @v character		Character to be printed
+ */
+static void vmconsole_putchar ( int character ) {
+	int rc;
+
+	/* Ignore if we are already mid-logging */
+	if ( vmconsole_entered )
+		return;
+
+	/* Fill line buffer */
+	if ( line_putchar ( &vmconsole_line, character ) == 0 )
+		return;
+
+	/* Guard against re-entry */
+	vmconsole_entered = 1;
+
+	/* Send log message */
+	if ( ( rc = guestrpc_command ( vmconsole_channel,
+				       vmconsole_buffer.prefix, NULL, 0 ) ) <0){
+		DBG ( "VMware console could not send log message: %s\n",
+		      strerror ( rc ) );
+	}
+
+	/* Clear re-entry flag */
+	vmconsole_entered = 0;
+}
+
+/** VMware logfile console driver */
+struct console_driver vmconsole __console_driver = {
+	.putchar = vmconsole_putchar,
+	.disabled = CONSOLE_DISABLED,
+	.usage = CONSOLE_VMWARE,
+};
+
+/**
+ * Initialise VMware logfile console
+ *
+ */
+static void vmconsole_init ( void ) {
+	int rc;
+
+	/* Attempt to open console */
+	vmconsole_channel = guestrpc_open();
+	if ( vmconsole_channel < 0 ) {
+		rc = vmconsole_channel;
+		DBG ( "VMware console could not be initialised: %s\n",
+		      strerror ( rc ) );
+		return;
+	}
+
+	/* Mark console as available */
+	vmconsole.disabled = 0;
+}
+
+/**
+ * VMware logfile console initialisation function
+ */
+struct init_fn vmconsole_init_fn __init_fn ( INIT_CONSOLE ) = {
+	.initialise = vmconsole_init,
+};