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Implemented (untested) PXENV_START_UNDI.

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This commit is contained in:
Michael Brown
2007-07-03 18:17:14 +01:00
parent 30a442aef8
commit 0924cf678e
5 changed files with 58 additions and 41 deletions
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69
src/interface/pxe/pxe_preboot.c
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@@ -28,6 +28,9 @@
#include <stdlib.h>
#include <gpxe/uaccess.h>
#include <gpxe/dhcp.h>
#include <gpxe/device.h>
#include <gpxe/netdevice.h>
#include <gpxe/isapnp.h>
#include <basemem_packet.h>
#include "pxe.h"
#include "pxe_call.h"
@@ -196,41 +199,47 @@ PXENV_EXIT_t pxenv_restart_tftp ( struct s_PXENV_TFTP_READ_FILE
* Status: working
*/
PXENV_EXIT_t pxenv_start_undi ( struct s_PXENV_START_UNDI *start_undi ) {
unsigned int isapnp_read_port;
unsigned int isapnp_csn;
unsigned int pci_busdevfn;
unsigned int bus_type;
unsigned int location;
struct net_device *netdev;
DBG ( "PXENV_START_UNDI" );
DBG ( "PXENV_START_UNDI %04x:%04x:%04x",
start_undi->AX, start_undi->BX, start_undi->DX );
#if 0
/* Record PCI bus & devfn passed by caller, so we know which
* NIC they want to use.
*
* If they don't match our already-existing NIC structure, set
* values to ensure that the specified NIC is used at the next
* call to pxe_intialise_nic().
*/
bus = ( start_undi->AX >> 8 ) & 0xff;
devfn = start_undi->AX & 0xff;
/* Determine bus type and location */
isapnp_read_port = start_undi->DX;
isapnp_csn = start_undi->BX;
pci_busdevfn = start_undi->AX;
#warning "device probing mechanism has completely changed"
#if 0
if ( ( pci->dev.driver == NULL ) ||
( pci->dev.bus != bus ) || ( pci->dev.devfn != devfn ) ) {
/* This is quite a bit of a hack and relies on
* knowledge of the internal operation of Etherboot's
* probe mechanism.
*/
DBG ( " set PCI %hhx:%hhx.%hhx",
bus, PCI_SLOT(devfn), PCI_FUNC(devfn) );
dev->type = BOOT_NIC;
dev->to_probe = PROBE_PCI;
memset ( &dev->state, 0, sizeof(dev->state) );
pci->advance = 1;
pci->dev.use_specified = 1;
pci->dev.bus = bus;
pci->dev.devfn = devfn;
/* Use a heuristic to decide whether we are PCI or ISAPnP */
if ( ( isapnp_read_port >= ISAPNP_READ_PORT_MIN ) &&
( isapnp_read_port <= ISAPNP_READ_PORT_MAX ) &&
( isapnp_csn >= ISAPNP_CSN_MIN ) &&
( isapnp_csn <= ISAPNP_CSN_MAX ) ) {
bus_type = BUS_TYPE_ISAPNP;
location = isapnp_csn;
} else {
bus_type = BUS_TYPE_PCI;
location = pci_busdevfn;
}
#endif
#endif
/* Look for a matching net device */
netdev = find_netdev_by_location ( bus_type, location );
if ( ! netdev ) {
DBG ( " no net device found" );
start_undi->Status = PXENV_STATUS_UNDI_CANNOT_INITIALIZE_NIC;
return PXENV_EXIT_FAILURE;
}
DBG ( " using netdev %s", netdev->name );
/* Save as PXE net device */
pxe_set_netdev ( netdev );
/* Hook INT 1A */
pxe_hook_int1a();
start_undi->Status = PXENV_STATUS_SUCCESS;
return PXENV_EXIT_SUCCESS;