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[pxe] Make pxe_init_structures() an initialisation function 

pxe_init_structures() fills in the fields of the !PXE and PXENV+
structures that aren't known until gPXE starts up.  Once gPXE is
started, these values will never change.

Make pxe_init_structures() an initialisation function so that PXE
users don't have to worry about calling it.
pull/1/head
Michael Brown 2009-06-28 19:40:16 +01:00
parent c26a38b313
commit c2965b0fe7
4 changed files with 7 additions and 6 deletions
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1
src/arch/i386/image/pxe_image.c
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@ -47,7 +47,6 @@ static int pxe_exec ( struct image *image ) {
int rc; int rc;
/* Ensure that PXE stack is ready to use */ /* Ensure that PXE stack is ready to use */
pxe_init_structures();
pxe_hook_int1a(); pxe_hook_int1a();
/* Arbitrarily pick the most recently opened network device */ /* Arbitrarily pick the most recently opened network device */

1
src/arch/i386/include/pxe_call.h
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@ -30,7 +30,6 @@ extern struct s_PXENV __text16 ( pxenv );
extern void pxe_hook_int1a ( void ); extern void pxe_hook_int1a ( void );
extern int pxe_unhook_int1a ( void ); extern int pxe_unhook_int1a ( void );
extern void pxe_init_structures ( void );
extern int pxe_start_nbp ( void ); extern int pxe_start_nbp ( void );
extern __asmcall void pxe_api_call ( struct i386_all_regs *ix86 ); extern __asmcall void pxe_api_call ( struct i386_all_regs *ix86 );

8
src/arch/i386/interface/pxe/pxe_call.c
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@ -19,6 +19,7 @@
FILE_LICENCE ( GPL2_OR_LATER ); FILE_LICENCE ( GPL2_OR_LATER );
#include <gpxe/uaccess.h> #include <gpxe/uaccess.h>
#include <gpxe/init.h>
#include <registers.h> #include <registers.h>
#include <biosint.h> #include <biosint.h>
#include <pxe.h> #include <pxe.h>
@ -403,7 +404,7 @@ static uint8_t pxe_checksum ( void *data, size_t size ) {
* Initialise !PXE and PXENV+ structures * Initialise !PXE and PXENV+ structures
* *
*/ */
void pxe_init_structures ( void ) { static void pxe_init_structures ( void ) {
uint32_t rm_cs_phys = ( rm_cs << 4 ); uint32_t rm_cs_phys = ( rm_cs << 4 );
uint32_t rm_ds_phys = ( rm_ds << 4 ); uint32_t rm_ds_phys = ( rm_ds << 4 );
@ -429,6 +430,11 @@ void pxe_init_structures ( void ) {
pxenv.Checksum -= pxe_checksum ( &pxenv, sizeof ( pxenv ) ); pxenv.Checksum -= pxe_checksum ( &pxenv, sizeof ( pxenv ) );
} }
/** PXE structure initialiser */
struct init_fn pxe_init_fn __init_fn ( INIT_NORMAL ) = {
.initialise = pxe_init_structures,
};
/** /**
* Start PXE NBP at 0000:7c00 * Start PXE NBP at 0000:7c00
* *

3
src/arch/i386/interface/pxe/pxe_loader.c
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@ -39,9 +39,6 @@ PXENV_EXIT_t undi_loader ( struct s_UNDI_LOADER *undi_loader ) {
DBG ( "[PXENV_UNDI_LOADER to CS %04x DS %04x]", DBG ( "[PXENV_UNDI_LOADER to CS %04x DS %04x]",
undi_loader->UNDI_CS, undi_loader->UNDI_DS ); undi_loader->UNDI_CS, undi_loader->UNDI_DS );
/* Set up PXE data structures */
pxe_init_structures();
/* Fill in UNDI loader structure */ /* Fill in UNDI loader structure */
undi_loader->PXEptr.segment = rm_cs; undi_loader->PXEptr.segment = rm_cs;
undi_loader->PXEptr.offset = __from_text16 ( &ppxe ); undi_loader->PXEptr.offset = __from_text16 ( &ppxe );