diff options
Diffstat (limited to 'src/arch/i386/include')
| -rw-r--r-- | src/arch/i386/include/bits/errfile.h | 3 | ||||
| -rw-r--r-- | src/arch/i386/include/comboot.h | 102 | ||||
| -rw-r--r-- | src/arch/i386/include/pxe_call.h | 1 |
3 files changed, 106 insertions, 0 deletions
diff --git a/src/arch/i386/include/bits/errfile.h b/src/arch/i386/include/bits/errfile.h index c5b04a26..99927c28 100644 --- a/src/arch/i386/include/bits/errfile.h +++ b/src/arch/i386/include/bits/errfile.h @@ -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 ) diff --git a/src/arch/i386/include/comboot.h b/src/arch/i386/include/comboot.h new file mode 100644 index 00000000..1fc3b718 --- /dev/null +++ b/src/arch/i386/include/comboot.h @@ -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 diff --git a/src/arch/i386/include/pxe_call.h b/src/arch/i386/include/pxe_call.h index dc585310..7a38d314 100644 --- a/src/arch/i386/include/pxe_call.h +++ b/src/arch/i386/include/pxe_call.h @@ -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 */ |