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[cmdline] Add ability to perform a warm reboot

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2013-03-22 13:54:44 +00:00
parent 71cd508838
commit e68a6ca225
6 changed files with 28 additions and 9 deletions
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2
src/arch/i386/include/bios.h
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@ -6,6 +6,8 @@ FILE_LICENCE ( GPL2_OR_LATER );
#define BDA_SEG 0x0040
#define BDA_EQUIPMENT_WORD 0x0010
#define BDA_FBMS 0x0013
#define BDA_REBOOT 0x0072
#define BDA_REBOOT_WARM 0x1234
#define BDA_NUM_DRIVES 0x0075
#endif /* BIOS_H */

9
src/arch/i386/interface/pcbios/bios_reboot.c
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@ -27,12 +27,19 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/reboot.h>
#include <realmode.h>
#include <bios.h>
/**
* Reboot system
*
* @v warm Perform a warm reboot
*/
static void bios_reboot ( void ) {
static void bios_reboot ( int warm ) {
uint16_t flag;
/* Configure BIOS for cold/warm reboot */
flag = ( warm ? BDA_REBOOT_WARM : 0 );
put_real ( flag, BDA_SEG, BDA_REBOOT );
/* Jump to system reset vector */
__asm__ __volatile__ ( REAL_CODE ( "ljmp $0xf000, $0xfff0" ) : : );

3
src/core/null_reboot.c
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@ -32,8 +32,9 @@ FILE_LICENCE ( GPL2_OR_LATER );
/**
* Reboot system
*
* @v warm Perform a warm reboot
*/
static void null_reboot ( void ) {
static void null_reboot ( int warm __unused ) {
printf ( "Cannot reboot; not implemented\n" );
while ( 1 ) {}

15
src/hci/commands/reboot_cmd.c
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@ -17,6 +17,7 @@
* 02110-1301, USA.
*/
#include <getopt.h>
#include <ipxe/command.h>
#include <ipxe/parseopt.h>
#include <ipxe/reboot.h>
@ -30,14 +31,20 @@ FILE_LICENCE ( GPL2_OR_LATER );
*/
/** "reboot" options */
struct reboot_options {};
struct reboot_options {
/** Perform a warm reboot */
int warm;
};
/** "reboot" option list */
static struct option_descriptor reboot_opts[] = {};
static struct option_descriptor reboot_opts[] = {
OPTION_DESC ( "warm", 'w', no_argument,
struct reboot_options, warm, parse_flag ),
};
/** "reboot" command descriptor */
static struct command_descriptor reboot_cmd =
COMMAND_DESC ( struct reboot_options, reboot_opts, 0, 0, "" );
COMMAND_DESC ( struct reboot_options, reboot_opts, 0, 0, "[--warm]" );
/**
* The "reboot" command
@ -55,7 +62,7 @@ static int reboot_exec ( int argc, char **argv ) {
return rc;
/* Reboot system */
reboot();
reboot ( opts.warm );
return 0;
}

3
src/include/ipxe/reboot.h
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@ -51,7 +51,8 @@ FILE_LICENCE ( GPL2_OR_LATER );
/**
* Reboot system
*
* @v warm Perform a warm reboot
*/
void reboot ( void );
void reboot ( int warm );
#endif /* _IPXE_REBOOT_H */

5
src/interface/efi/efi_reboot.c
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@ -32,12 +32,13 @@ FILE_LICENCE ( GPL2_OR_LATER );
/**
* Reboot system
*
* @v warm Perform a warm reboot
*/
static void efi_reboot ( void ) {
static void efi_reboot ( int warm ) {
EFI_RUNTIME_SERVICES *rs = efi_systab->RuntimeServices;
/* Use runtime services to reset system */
rs->ResetSystem ( EfiResetCold, 0, 0, NULL );
rs->ResetSystem ( ( warm ? EfiResetWarm : EfiResetCold ), 0, 0, NULL );
}
PROVIDE_REBOOT ( efi, reboot, efi_reboot );