#include <realmode.h>
#include <gateA20.h>
#include <memsizes.h>
+#include <dhcp_basemem.h>
#include <gpxe/uaccess.h>
#include <gpxe/segment.h>
#include <gpxe/shutdown.h>
+#include <gpxe/netdevice.h>
+#include <gpxe/dhcp.h>
#include <gpxe/image.h>
/** @file
gateA20_unset();
-#warning "Should be providing bootp data"
__asm__ __volatile__ (
REAL_CODE ( "pushw %%ds\n\t" /* far pointer to bootp data */
"pushw %%bx\n\t"
: "=a" ( rc ), "=D" ( discard_D ), "=S" ( discard_S ),
"=b" ( discard_b )
: "D" ( imgheader->execaddr.segoff ),
- "S" ( imgheader->location ), "b" ( 0 /* bootp data */ )
+ "S" ( imgheader->location ),
+ "b" ( __from_data16 ( dhcp_basemem ) )
: "ecx", "edx", "ebp" );
gateA20_set();
* @ret rc Return status code, if image returns
*/
static int nbi_boot32 ( struct image *image, struct imgheader *imgheader ) {
+ int discard_D, discard_S, discard_b;
int rc;
DBGC ( image, "NBI %p executing 32-bit image at %lx\n",
/* no gateA20_unset for PM call */
-#warning "Should be providing bootp data"
-
/* Jump to OS with flat physical addressing */
__asm__ __volatile__ (
- PHYS_CODE ( "pushl $0\n\t" /* bootp data */
- "pushl %3\n\t" /* imgheader */
- "pushl %2\n\t" /* loaderinfo */
- "xchgw %%bx,%%bx\n\t"
- "call *%1\n\t"
+ PHYS_CODE ( "pushl %%ebx\n\t" /* bootp data */
+ "pushl %%esi\n\t" /* imgheader */
+ "pushl %%eax\n\t" /* loaderinfo */
+ "call *%%edi\n\t"
"addl $12, %%esp\n\t" /* clean up stack */ )
- : "=a" ( rc )
+ : "=a" ( rc ), "=D" ( discard_D ), "=S" ( discard_S ),
+ "=b" ( discard_b )
: "D" ( imgheader->execaddr.linear ),
- "a" ( virt_to_phys ( &loaderinfo ) ),
"S" ( ( imgheader->location.segment << 4 ) +
- imgheader->location.offset )
- : "ebx", "ecx", "edx", "ebp", "memory" );
+ imgheader->location.offset ),
+ "b" ( virt_to_phys ( dhcp_basemem ) ),
+ "a" ( virt_to_phys ( &loaderinfo ) )
+ : "ecx", "edx", "ebp", "memory" );
return rc;
}
+/**
+ * Guess boot network device
+ *
+ * @ret netdev Boot network device
+ */
+static struct net_device * guess_boot_netdev ( void ) {
+ struct net_device *boot_netdev;
+
+ /* Just use the first network device */
+ for_each_netdev ( boot_netdev ) {
+ return boot_netdev;
+ }
+
+ return NULL;
+}
+
+/**
+ * Prepare DHCP parameter block for NBI image
+ *
+ * @v image NBI image
+ * @ret rc Return status code
+ */
+static int nbi_prepare_dhcp ( struct image *image ) {
+ struct dhcp_packet dhcppkt;
+ struct net_device *boot_netdev;
+ int rc;
+
+ boot_netdev = guess_boot_netdev();
+ if ( ! boot_netdev ) {
+ DBGC ( image, "NBI %p could not identify a network device\n",
+ image );
+ return -ENODEV;
+ }
+
+ if ( ( rc = create_dhcp_packet ( boot_netdev, DHCPACK,
+ dhcp_basemem, sizeof ( dhcp_basemem ),
+ &dhcppkt ) ) != 0 ) {
+ DBGC ( image, "NBI %p failed to build DHCP packet\n", image );
+ return rc;
+ }
+ if ( ( rc = copy_dhcp_packet_options ( &dhcppkt, NULL ) ) != 0 ) {
+ DBGC ( image, "NBI %p failed to copy DHCP options\n", image );
+ return rc;
+ }
+
+ return 0;
+}
+
/**
* Execute a loaded NBI image
*
copy_from_user ( &imgheader, image->priv.user, 0,
sizeof ( imgheader ) );
+ /* Prepare DHCP option block */
+ if ( ( rc = nbi_prepare_dhcp ( image ) ) != 0 )
+ return rc;
+
+ /* Shut down now if NBI image will not return */
may_return = NBI_PROGRAM_RETURNS ( imgheader.flags );
if ( ! may_return )
shutdown();
+ /* Execute NBI image */
if ( NBI_LINEAR_EXEC_ADDR ( imgheader.flags ) ) {
rc = nbi_boot32 ( image, &imgheader );
} else {