[cmdline] Add "poweroff" command

Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Marin Hannache <git@mareo.fr>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/arch/i386/interface/pcbios/apm.c

+/*
+ * Copyright (C) 2013 Marin Hannache <ipxe@mareo.fr>.
+ *
+ * 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.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/**
+ * @file
+ *
+ * Advanced Power Management
+ *
+ */
+
+#include <errno.h>
+#include <realmode.h>
+#include <ipxe/reboot.h>
+
+/**
+ * Power off the computer using APM
+ *
+ * @ret rc		Return status code
+ */
+static int apm_poweroff ( void ) {
+	uint16_t apm_version;
+	uint16_t apm_signature;
+	uint16_t apm_flags;
+	uint16_t carry;
+
+	/* APM check */
+	__asm__ __volatile__ ( REAL_CODE ( "int $0x15\n\t"
+	                                   "adc %%edx,0\n\t" )
+	                       : "=a" ( apm_version ), "=b" ( apm_signature ),
+                                 "=c" ( apm_flags ), "=d" ( carry )
+	                       : "a" ( 0x5300 ), "b" ( 0x0000 ),
+				 "d" ( 0x0000 ) );
+	if ( carry ) {
+		DBG ( "APM not present\n" );
+		return -ENOTSUP;
+	}
+	if ( apm_signature != 0x504d ) { /* signature 'PM' */
+		DBG ( "APM not present\n" );
+		return -ENOTSUP;
+	}
+	if ( apm_version < 0x0101 ) { /* Need version 1.1+ */
+		DBG ( "APM 1.1+ not supported\n" );
+		return -ENOTSUP;
+	}
+	if ( ( apm_flags & 0x8 ) == 0x8 ) {
+		DBG ( "APM power management disabled\n" );
+		return -EPERM;
+	}
+	DBG2 ( "APM check completed\n" );
+
+	/* APM initialisation */
+	__asm__ __volatile__ ( REAL_CODE ( "int $0x15\n\t"
+	                                   "adc %%edx,0\n\t" )
+	                       : "=d" ( carry )
+	                       : "a" ( 0x5301 ), "b" ( 0x0000 ),
+	                         "d" ( 0x0000 ) );
+	if ( carry ) {
+		DBG ( "APM initialisation failed\n" );
+		return -EIO;
+	}
+	DBG2 ( "APM initialisation completed\n" );
+
+	/* Set APM driver version */
+	__asm__ __volatile__ ( REAL_CODE ( "int $0x15\n\t"
+	                                   "adc %%edx,0\n\t" )
+	                       : "=d" ( carry )
+	                       : "a" ( 0x530e ), "b" ( 0x0000 ),
+	                         "c" ( 0x0101 ), "d" ( 0x0000 ) );
+	if ( carry ) {
+		DBG ( "APM setting driver version failed\n" );
+		return -EIO;
+	}
+	DBG2 ( "APM driver version set\n" );
+
+	/* Setting power state to off */
+	__asm__ __volatile__ ( REAL_CODE ( "int $0x15\n\t"
+	                                   "adc %%edx,0\n\t" )
+	                       : "=d" ( carry )
+	                       : "a" ( 0x5307 ), "b" ( 0x0001 ),
+	                         "c" ( 0x0003 ), "d" ( 0x0000) );
+	if ( carry ) {
+		DBG ( "APM setting power state failed\n" );
+		return -ENOTTY;
+	}
+
+	/* Should never happen */
+	return -ECANCELED;
+}
+
+PROVIDE_REBOOT ( pcbios, poweroff, apm_poweroff );

src/arch/x86/include/bits/errfile.h

 #define ERRFILE_vmware		( ERRFILE_ARCH | ERRFILE_CORE | 0x00080000 )
 #define ERRFILE_guestrpc	( ERRFILE_ARCH | ERRFILE_CORE | 0x00090000 )
 #define ERRFILE_guestinfo	( ERRFILE_ARCH | ERRFILE_CORE | 0x000a0000 )
+#define ERRFILE_apm		( ERRFILE_ARCH | ERRFILE_CORE | 0x000b0000 )
 
 #define ERRFILE_bootsector     ( ERRFILE_ARCH | ERRFILE_IMAGE | 0x00000000 )
 #define ERRFILE_bzimage	       ( ERRFILE_ARCH | ERRFILE_IMAGE | 0x00010000 )

src/config/config.c

 #ifdef VLAN_CMD
 REQUIRE_OBJECT ( vlan_cmd );
 #endif
+#ifdef POWEROFF_CMD
+REQUIRE_OBJECT ( poweroff_cmd );
+#endif
 #ifdef REBOOT_CMD
 REQUIRE_OBJECT ( reboot_cmd );
 #endif

src/config/general.h

 //#define VLAN_CMD		/* VLAN commands */
 //#define PXE_CMD		/* PXE commands */
 //#define REBOOT_CMD		/* Reboot command */
+//#define POWEROFF_CMD		/* Power off command */
 //#define IMAGE_TRUST_CMD	/* Image trust management commands */
 
 /*

src/core/null_reboot.c

  */
 
 #include <stdio.h>
+#include <errno.h>
 #include <ipxe/reboot.h>
 
 /**
 	while ( 1 ) {}
 }
 
+/**
+ * Power off system
+ *
+ * @ret rc		Return status code
+ */
+static int null_poweroff ( void ) {
+
+	return -ENOTSUP;
+}
+
 PROVIDE_REBOOT ( null, reboot, null_reboot );
+PROVIDE_REBOOT ( null, poweroff, null_poweroff );

src/hci/commands/poweroff_cmd.c

+/*
+ * Copyright (C) 2013 Marin Hannache <ipxe@mareo.fr>.
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <getopt.h>
+#include <ipxe/command.h>
+#include <ipxe/parseopt.h>
+#include <ipxe/reboot.h>
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** @file
+ *
+ * Power off command
+ *
+ */
+
+/** "poweroff" options */
+struct poweroff_options {};
+
+/** "poweroff" option list */
+static struct option_descriptor poweroff_opts[] = {};
+
+/** "poweroff" command descriptor */
+static struct command_descriptor poweroff_cmd =
+	COMMAND_DESC ( struct poweroff_options, poweroff_opts, 0, 0, "" );
+
+/**
+ * The "poweroff" command
+ *
+ * @v argc		Argument count
+ * @v argv		Argument list
+ * @ret rc		Return status code
+ */
+static int poweroff_exec ( int argc, char **argv ) {
+	struct poweroff_options opts;
+	int rc;
+
+	/* Parse options */
+	if ( ( rc = parse_options ( argc, argv, &poweroff_cmd, &opts ) ) != 0 )
+		return rc;
+
+	/* Power off system */
+	rc = poweroff();
+	if ( rc != 0 )
+		printf ( "Could not power off: %s\n", strerror ( rc ) );
+
+	return rc;
+}
+
+/** "poweroff" command */
+struct command poweroff_command __command = {
+	.name = "poweroff",
+	.exec = poweroff_exec,
+};

src/include/ipxe/errfile.h

 #define ERRFILE_test		       ( ERRFILE_CORE | 0x00170000 )
 #define ERRFILE_xferbuf		       ( ERRFILE_CORE | 0x00180000 )
 #define ERRFILE_pending		       ( ERRFILE_CORE | 0x00190000 )
+#define ERRFILE_null_reboot	       ( ERRFILE_CORE | 0x001a0000 )
 
 #define ERRFILE_eisa		     ( ERRFILE_DRIVER | 0x00000000 )
 #define ERRFILE_isa		     ( ERRFILE_DRIVER | 0x00010000 )
 #define ERRFILE_efi_umalloc	      ( ERRFILE_OTHER | 0x003b0000 )
 #define ERRFILE_linux_pci	      ( ERRFILE_OTHER | 0x003c0000 )
 #define ERRFILE_pci_settings	      ( ERRFILE_OTHER | 0x003d0000 )
+#define ERRFILE_efi_reboot	      ( ERRFILE_OTHER | 0x003e0000 )
 
 /** @} */
 

src/include/ipxe/reboot.h

  */
 void reboot ( int warm );
 
+/**
+ * Power off system
+ *
+ * @ret rc		Return status code
+ *
+ * This function may fail, since not all systems support being powered
+ * off by software.
+ */
+int poweroff ( void );
+
 #endif /* _IPXE_REBOOT_H */

src/interface/efi/efi_reboot.c

  *
  */
 
+#include <errno.h>
 #include <ipxe/efi/efi.h>
 #include <ipxe/reboot.h>
 
 	rs->ResetSystem ( ( warm ? EfiResetWarm : EfiResetCold ), 0, 0, NULL );
 }
 
+/**
+ * Power off system
+ *
+ * @ret rc		Return status code
+ */
+static int efi_poweroff ( void ) {
+	EFI_RUNTIME_SERVICES *rs = efi_systab->RuntimeServices;
+
+	/* Use runtime services to power off system */
+	rs->ResetSystem ( EfiResetShutdown, 0, 0, NULL );
+
+	/* Should never happen */
+	return -ECANCELED;
+}
+
 PROVIDE_REBOOT ( efi, reboot, efi_reboot );
+PROVIDE_REBOOT ( efi, poweroff, efi_poweroff );