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[comboot] Add COMBOOT and COM32 support

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This commit is contained in:
Daniel Verkamp
2008-08-28 23:52:19 +01:00
committed by Michael Brown
parent aa28544373
commit e8b22f203f
15 changed files with 1816 additions and 0 deletions
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3
src/arch/i386/include/bits/errfile.h
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@@ -21,6 +21,9 @@
#define ERRFILE_nbi ( ERRFILE_ARCH | ERRFILE_IMAGE | 0x00040000 )
#define ERRFILE_pxe_image ( ERRFILE_ARCH | ERRFILE_IMAGE | 0x00050000 )
#define ERRFILE_elfboot ( ERRFILE_ARCH | ERRFILE_IMAGE | 0x00060000 )
#define ERRFILE_comboot ( ERRFILE_ARCH | ERRFILE_IMAGE | 0x00070000 )
#define ERRFILE_com32 ( ERRFILE_ARCH | ERRFILE_IMAGE | 0x00080000 )
#define ERRFILE_comboot_resolv ( ERRFILE_ARCH | ERRFILE_IMAGE | 0x00090000 )
#define ERRFILE_undi ( ERRFILE_ARCH | ERRFILE_NET | 0x00000000 )
#define ERRFILE_undiload ( ERRFILE_ARCH | ERRFILE_NET | 0x00010000 )

102
src/arch/i386/include/comboot.h Normal file
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@@ -0,0 +1,102 @@
#ifndef COMBOOT_H
#define COMBOOT_H
/**
* @file
*
* SYSLINUX COMBOOT
*/
#include <stdint.h>
#include <setjmp.h>
#include <gpxe/in.h>
/** Segment used for COMBOOT PSP and image */
#define COMBOOT_PSP_SEG 0x07C0
/** Entry point address of COM32 images */
#define COM32_START_PHYS 0x101000
/** COM32 bounce buffer segment */
#define COM32_BOUNCE_SEG 0x07C0
/** Size of SYSLINUX file block in bytes */
#define COMBOOT_FILE_BLOCKSZ 512
/** COMBOOT feature flags (INT 22h AX=15h) */
#define COMBOOT_FEATURE_LOCAL_BOOT (1 << 0)
#define COMBOOT_FEATURE_IDLE_LOOP (1 << 1)
/** Maximum number of shuffle descriptors for
* shuffle and boot functions
* (INT 22h AX=0012h, 001Ah, 001Bh)
*/
#define COMBOOT_MAX_SHUFFLE_DESCRIPTORS 682
typedef union {
uint32_t l;
uint16_t w[2];
uint8_t b[4];
} com32_reg32_t;
typedef struct {
uint16_t gs; /* Offset 0 */
uint16_t fs; /* Offset 2 */
uint16_t es; /* Offset 4 */
uint16_t ds; /* Offset 6 */
com32_reg32_t edi; /* Offset 8 */
com32_reg32_t esi; /* Offset 12 */
com32_reg32_t ebp; /* Offset 16 */
com32_reg32_t _unused_esp; /* Offset 20 */
com32_reg32_t ebx; /* Offset 24 */
com32_reg32_t edx; /* Offset 28 */
com32_reg32_t ecx; /* Offset 32 */
com32_reg32_t eax; /* Offset 36 */
com32_reg32_t eflags; /* Offset 40 */
} com32sys_t;
typedef struct {
uint32_t dest;
uint32_t src;
uint32_t len;
} comboot_shuffle_descriptor;
extern void hook_comboot_interrupts ( );
/* These are not the correct prototypes, but it doens't matter,
* as we only ever get the address of these functions;
* they are only called from COM32 code running in PHYS_CODE
*/
extern void com32_intcall_wrapper ( );
extern void com32_farcall_wrapper ( );
extern void com32_cfarcall_wrapper ( );
/* Resolve a hostname to an (IPv4) address */
extern int comboot_resolv ( const char *name, struct in_addr *address );
/* setjmp/longjmp context buffer used to return after loading an image */
extern jmp_buf comboot_return;
/* Command line to execute when returning via comboot_return
* with COMBOOT_RETURN_RUN_KERNEL
*/
extern char *comboot_kernel_cmdline;
/* Execute comboot_image_cmdline */
extern void comboot_run_kernel ( );
extern void *com32_external_esp;
#define COMBOOT_RETURN_EXIT 1
#define COMBOOT_RETURN_RUN_KERNEL 2
extern void comboot_force_text_mode ( void );
#define COMBOOT_VIDEO_GRAPHICS 0x01
#define COMBOOT_VIDEO_NONSTANDARD 0x02
#define COMBOOT_VIDEO_VESA 0x04
#define COMBOOT_VIDEO_NOTEXT 0x08
#endif

1
src/arch/i386/include/pxe_call.h
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@@ -30,5 +30,6 @@ extern void pxe_hook_int1a ( void );
extern int pxe_unhook_int1a ( void );
extern void pxe_init_structures ( void );
extern int pxe_start_nbp ( void );
extern __cdecl void pxe_api_call ( struct i386_all_regs *ix86 );
#endif /* _PXE_CALL_H */