55 lines
1.6 KiB
Diff
55 lines
1.6 KiB
Diff
diff -r ac48ec8ffd86 platform/pc99/pistachio/src/reboot.cc
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--- a/platform/pc99/pistachio/src/reboot.cc Tue Aug 03 13:10:36 2010 +0200
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+++ b/platform/pc99/pistachio/src/reboot.cc Tue Oct 05 15:30:32 2010 +0200
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@@ -58,7 +58,9 @@
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/*
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* Description: PC99 reset
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*/
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+
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#include <kernel/arch/platform.h>
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+#include <kernel/arch/ioport.h>
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/*
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* Reboot the box
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@@ -66,6 +68,39 @@
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void Platform::reboot(void)
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{
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+ asm volatile ("cli \n" :);
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- for (;;);
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+ /* i8042: store the next byte at port 0x60 as command byte */
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+ while (in_u8(0x64) & 0x2) ;
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+ out_u8(0x64, 0x60);
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+
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+ /* i8042 command byte (PS/2-compatible mode):
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+ b0=0 ... no IRQ 1 is generated when data available in
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+ input buffer
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+ b1=0 ... no IRQ 1 is generated when mouse data available
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+ in input buffer
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+ b2=1 ... set SYS flag in status register -- tells POST
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+ to perform "warm boot" tests/initiailization
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+ b3=0 ... reserved
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+ b4=0 ... keyboard interface enabled
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+ b5=0 ... auxillary PS/2 device (mouse) interface
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+ enabled
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+ b6=0 ... translation disabled -- data appears at
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+ input buffer exactly as read from keyboard
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+ b7=0 ... reserved
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+ */
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+ while (in_u8(0x64) & 0x2) ;
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+ out_u8(0x60, 0x4);
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+
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+ /* i8042: pulse output port with 1110b
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+ b0=0 ... reset computer
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+ b1=1 ... set gate A20
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+ b2=1 ... pull mouse data low
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+ b3=1 ... pull mouse clock low
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+ */
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+ while (in_u8(0x64) & 0x2) ;
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+ out_u8(0x64, 0xfe);
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+
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+ for (;;)
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+ asm volatile ("hlt \n" :);
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}
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