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/* ----------------------------------------------------------------------- *
*
* Copyright 2008 H. Peter Anvin - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston MA 02110-1301, USA; either version 2 of the License, or
* (at your option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
/*
* gpxecmd.c
*
* Invoke an arbitrary gPXE command, if available.
*/
#include <alloca.h>
#include <inttypes.h>
#include <stdio.h>
#include <console.h>
#include <com32.h>
#include <string.h>
#include <sys/gpxe.h>
struct segoff16 {
uint16_t offs, seg;
};
struct s_PXENV_FILE_EXEC {
uint16_t Status;
struct segoff16 Command;
};
static void gpxecmd(const char **args)
{
char *q;
struct s_PXENV_FILE_EXEC *fx;
com32sys_t reg;
memset(®, 0, sizeof reg);
fx = __com32.cs_bounce;
q = (char *)(fx + 1);
fx->Status = 1;
fx->Command.offs = OFFS(q);
fx->Command.seg = SEG(q);
while (*args) {
q = stpcpy(q, *args);
*q++ = ' ';
args++;
}
*--q = '\0';
memset(®, 0, sizeof reg);
reg.eax.w[0] = 0x0009;
reg.ebx.w[0] = 0x00e5; /* PXENV_FILE_EXEC */
reg.edi.w[0] = OFFS(fx);
reg.es = SEG(fx);
__intcall(0x22, ®, ®);
/* This should not return... */
}
int main(int argc, const char *argv[])
{
openconsole(&dev_null_r, &dev_stdcon_w);
if (argc < 2) {
printf("Usage: gpxecmd command...\n");
return 1;
}
if (!is_gpxe()) {
printf("gpxecmd: gPXE API not detected\n");
return 1;
}
gpxecmd(argv + 1);
return 0;
}
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