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[hyperv] Add support for Hyper-V hypervisor

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Add support for detecting and communicating with the Hyper-V
hypervisor.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2014-12-11 17:22:18 +00:00
parent 1d2b7c91f7
commit d77a546fb4
10 changed files with 977 additions and 3 deletions
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1
src/arch/x86/include/bits/errfile.h
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@@ -46,6 +46,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#define ERRFILE_timer_rdtsc ( ERRFILE_ARCH | ERRFILE_DRIVER | 0x00000000 )
#define ERRFILE_timer_bios ( ERRFILE_ARCH | ERRFILE_DRIVER | 0x00010000 )
#define ERRFILE_hvm ( ERRFILE_ARCH | ERRFILE_DRIVER | 0x00020000 )
#define ERRFILE_hyperv ( ERRFILE_ARCH | ERRFILE_DRIVER | 0x00030000 )
#define ERRFILE_cpuid_cmd ( ERRFILE_ARCH | ERRFILE_OTHER | 0x00000000 )
#define ERRFILE_cpuid_settings ( ERRFILE_ARCH | ERRFILE_OTHER | 0x00010000 )

3
src/arch/x86/include/ipxe/cpuid.h
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@@ -39,6 +39,9 @@ struct x86_features {
/** Get standard features */
#define CPUID_FEATURES 0x00000001UL
/** Hypervisor is present */
#define CPUID_FEATURES_INTEL_ECX_HYPERVISOR 0x80000000UL
/** Get largest extended function */
#define CPUID_AMD_MAX_FN 0x80000000UL

70
src/arch/x86/include/pic8259.h Normal file
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@@ -0,0 +1,70 @@
/*
* Basic support for controlling the 8259 Programmable Interrupt Controllers.
*
* Initially written by Michael Brown (mcb30).
*/
FILE_LICENCE ( GPL2_OR_LATER );
#ifndef PIC8259_H
#define PIC8259_H
#include <ipxe/io.h>
#define IRQ_PIC_CUTOFF 8
/* 8259 register locations */
#define PIC1_ICW1 0x20
#define PIC1_OCW2 0x20
#define PIC1_OCW3 0x20
#define PIC1_ICR 0x20
#define PIC1_IRR 0x20
#define PIC1_ISR 0x20
#define PIC1_ICW2 0x21
#define PIC1_ICW3 0x21
#define PIC1_ICW4 0x21
#define PIC1_IMR 0x21
#define PIC2_ICW1 0xa0
#define PIC2_OCW2 0xa0
#define PIC2_OCW3 0xa0
#define PIC2_ICR 0xa0
#define PIC2_IRR 0xa0
#define PIC2_ISR 0xa0
#define PIC2_ICW2 0xa1
#define PIC2_ICW3 0xa1
#define PIC2_ICW4 0xa1
#define PIC2_IMR 0xa1
/* Register command values */
#define OCW3_ID 0x08
#define OCW3_READ_IRR 0x03
#define OCW3_READ_ISR 0x02
#define ICR_EOI_NON_SPECIFIC 0x20
#define ICR_EOI_NOP 0x40
#define ICR_EOI_SPECIFIC 0x60
#define ICR_EOI_SET_PRIORITY 0xc0
/* Macros to enable/disable IRQs */
#define IMR_REG(x) ( (x) < IRQ_PIC_CUTOFF ? PIC1_IMR : PIC2_IMR )
#define IMR_BIT(x) ( 1 << ( (x) % IRQ_PIC_CUTOFF ) )
#define irq_enabled(x) ( ( inb ( IMR_REG(x) ) & IMR_BIT(x) ) == 0 )
#define enable_irq(x) outb ( inb( IMR_REG(x) ) & ~IMR_BIT(x), IMR_REG(x) )
#define disable_irq(x) outb ( inb( IMR_REG(x) ) | IMR_BIT(x), IMR_REG(x) )
/* Macros for acknowledging IRQs */
#define ICR_REG( irq ) ( (irq) < IRQ_PIC_CUTOFF ? PIC1_ICR : PIC2_ICR )
#define ICR_VALUE( irq ) ( (irq) % IRQ_PIC_CUTOFF )
#define CHAINED_IRQ 2
/* Utility macros to convert IRQ numbers to INT numbers and INT vectors */
#define IRQ_INT( irq ) ( ( ( (irq) - IRQ_PIC_CUTOFF ) ^ 0x70 ) & 0x7f )
/* Other constants */
#define IRQ_MAX 15
#define IRQ_NONE -1U
/* Function prototypes
*/
void send_eoi ( unsigned int irq );
#endif /* PIC8259_H */