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Partial implementation of UNDI loader caller.

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This commit is contained in:
Michael Brown
2007-01-05 03:24:39 +00:00
parent 0638945c7e
commit 9780fef360
4 changed files with 107 additions and 55 deletions
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2
src/include/pxe.h
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@@ -155,7 +155,7 @@ struct pxe_driver {
/** ROM segment address */
unsigned int rom_segment;
/** UNDI loader entry point */
SEGOFF16_t loader;
SEGOFF16_t loader_entry;
/** Code segment size */
size_t code_size;
/** Data segment size */

66
src/include/pxe_api.h
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@@ -1562,54 +1562,20 @@ extern PXENV_EXIT_t pxenv_undi_isr ( struct s_PXENV_UNDI_ISR *undi_isr );
* @{
*/
/** The UNDI ROM ID structure */
struct s_UNDI_ROM_ID {
/** Signature
*
* Contains the bytes 'U', 'N', 'D', 'I'.
*/
UINT32_t Signature;
UINT8_t StructLength; /**< Length of this structure */
/** Checksum
*
* The byte checksum of this structure (using the length in
* #StructLength) must be zero.
*/
UINT8_t StructCksum;
/** Revision of this structure
*
* For PXE version 2.1, this field must be zero.
*/
UINT8_t StructRev;
/** UNDI revision
*
* UNDI revision, least significant byte first. For UNDI
* version 2.1.0, this field will contain { 0x00, 0x01, 0x02 }.
*/
UINT8_t UNDIRev[3];
/** UNDI loader routine entry point
*
* This is the entry point for calling undi_loader().
*/
UINT16_t UNDILoader;
/** Minimum required stack segment size */
UINT16_t StackSize;
/** Minimum required data segment size */
UINT16_t DataSize;
/** Minimum required code segment size */
UINT16_t CodeSize;
} PACKED;
typedef struct s_UNDI_ROM_ID UNDI_ROM_ID_t;
/** Parameter block for undi_loader() */
struct s_UNDI_LOADER {
/** struct s_UNDI_LOADER starts with a struct s_PXENV_START_UNDI */
union undi_loader_start_undi {
PXENV_STATUS_t Status; /**< PXE status code */
/** Parameters to pass to pxenv_start_undi() */
struct s_PXENV_START_UNDI start_undi;
} u;
/** PXE status code */
PXENV_STATUS_t Status;
/** %ax register as for PXENV_START_UNDI */
UINT16_t AX;
/** %bx register as for PXENV_START_UNDI */
UINT16_t BX;
/** %dx register as for PXENV_START_UNDI */
UINT16_t DX;
/** %di register as for PXENV_START_UNDI */
OFF16_t DI;
/** %es register as for PXENV_START_UNDI */
SEGSEL_t ES;
/** UNDI data segment
*
* @note The PXE specification defines the type of this field
@@ -1617,7 +1583,7 @@ struct s_UNDI_LOADER {
* equivalent anyway; for other architectures #SEGSEL_t makes
* more sense.
*/
SEGSEL_t undi_ds;
SEGSEL_t UNDI_DS;
/** UNDI code segment
*
* @note The PXE specification defines the type of this field
@@ -1625,11 +1591,11 @@ struct s_UNDI_LOADER {
* equivalent anyway; for other architectures #SEGSEL_t makes
* more sense.
*/
SEGSEL_t undi_cs;
SEGSEL_t UNDI_CS;
/** Address of the !PXE structure (a struct s_PXE) */
SEGOFF16_t pxe_ptr;
SEGOFF16_t PXEptr;
/** Address of the PXENV+ structure (a struct s_PXENV) */
SEGOFF16_t pxenv_ptr;
SEGOFF16_t PXENVptr;
} PACKED;
typedef struct s_UNDI_LOADER UNDI_LOADER_t;