common/lynxkdi.c

/*
 * Copyright (c) Orbacom Systems, Inc <www.orbacom.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are freely
 * permitted provided that the above copyright notice and this
 * paragraph and the following disclaimer are duplicated in all
 * such forms.
 *
 * This software is provided "AS IS" and without any express or
 * implied warranties, including, without limitation, the implied
 * warranties of merchantability and fitness for a particular
 * purpose.
 */

#include <common.h>
#include <asm/processor.h>
#include <image.h>

#if defined(CONFIG_LYNXKDI)
#include <lynxkdi.h>

#if defined(CONFIG_MPC8260) || defined(CONFIG_440EP) || defined(CONFIG_440GR)
void lynxkdi_boot ( image_header_t *hdr )
{
	void (*lynxkdi)(void) = (void(*)(void))hdr->ih_ep;
	lynxos_bootparms_t *parms = (lynxos_bootparms_t *)0x0020;
	bd_t *kbd;
	DECLARE_GLOBAL_DATA_PTR;
	u32 *psz = (u32 *)(hdr->ih_load + 0x0204);

	memset( parms, 0, sizeof(*parms));
	kbd = gd->bd;
	parms->clock_ref = kbd->bi_busfreq;
	parms->dramsz = kbd->bi_memsize;
	memcpy(parms->ethaddr, kbd->bi_enetaddr, 6);
	mtspr(SPRN_SPRG2, 0x0020);

	/* Do a simple check for Bluecat so we can pass the
	 * kernel command line parameters.
	 */
	if( le32_to_cpu(*psz) == hdr->ih_size ){
	    char *args;
	    char *cmdline = (char *)(hdr->ih_load + 0x020c);
	    int len;

	    printf("Booting Bluecat KDI ...\n");
	    udelay(200*1000); /* Allow serial port to flush */
	    if ((args = getenv("bootargs")) == NULL)
		    args = "";
	    /* Prepend the cmdline */
	    len = strlen(args);
	    if( len && (len + strlen(cmdline) + 2 < (0x0400 - 0x020c))) {
		memmove( cmdline + strlen(args) + 1, cmdline, strlen(cmdline) );
		strcpy( cmdline, args );
		cmdline[len] = ' ';
	    }
	}
	else {
	    printf("Booting LynxOS KDI ...\n");
	}

	lynxkdi();
}
#else
#error "Lynx KDI support not implemented for configured CPU"
#endif

#endif	/* CONFIG_LYNXKDI */