diff options
Diffstat (limited to 'src/sys/arch/amd64/os/os_reboot.c')
| -rw-r--r-- | src/sys/arch/amd64/os/os_reboot.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/sys/arch/amd64/os/os_reboot.c b/src/sys/arch/amd64/os/os_reboot.c index 3ed82af..2e6387c 100644 --- a/src/sys/arch/amd64/os/os_reboot.c +++ b/src/sys/arch/amd64/os/os_reboot.c @@ -30,6 +30,7 @@ #include <sys/types.h> #include <sys/reboot.h> #include <sys/cdefs.h> +#include <sys/cpuvar.h> #include <os/reboot.h> #include <machine/pio.h> @@ -39,12 +40,48 @@ #define I8042_REBOOT 0 #endif /* __I8042_REBOOT */ +static void +intel_reset(struct mdcore *mdcore) +{ + /* + * Some intel platform controller hubs allow a + * reset via a special RST_CNT control register, + * perform a CPU reset with SYS_RST and RST_CPU. + */ + if (mdcore->family == 0x06) { + outb(0xCF9, 3 << 1); + } +} + +/* + * Perform platform specific reset methods + * + * @core: Current core for platform identification + */ +static void +platform_reset(struct pcore *core) +{ + struct mdcore *mdcore; + + if (core == NULL) { + return; + } + + mdcore = &core->md; + switch (mdcore->vendor) { + case CPU_VENDOR_INTEL: + intel_reset(mdcore); + break; + } +} + /* * Actual reboot core */ __dead static void __reboot(void) { + struct pcore *core; void *dmmy_null = NULL; /* @@ -55,6 +92,11 @@ __reboot(void) outb(0x64, 0xFE); } + /* Try platform specific methods */ + core = this_core(); + if (core != NULL) { + platform_reset(core); + } /* * If somehow nothing we've tried worked, be very |