#ifndef CYGONCE_HAL_HALBOOT_SI /* -*-asm-*- */#define CYGONCE_HAL_HALBOOT_SI// ====================================================================////	<platform>/halboot.si////	HAL bootup platform-oriented code (assembler)//// ====================================================================//####ECOSGPLCOPYRIGHTBEGIN####// -------------------------------------------// This file is part of eCos, the Embedded Configurable Operating System.// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.//// eCos 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; either version 2 or (at your option) any later version.//// eCos is distributed in the hope that it will be useful, but WITHOUT ANY// WARRANTY; without even the implied warranty of MERCHANTABILITY or// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License// for more details.//// You should have received a copy of the GNU General Public License along// with eCos; if not, write to the Free Software Foundation, Inc.,// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.//// As a special exception, if other files instantiate templates or use macros// or inline functions from this file, or you compile this file and link it// with other works to produce a work based on this file, this file does not// by itself cause the resulting work to be covered by the GNU General Public// License. However the source code for this file must still be made available// in accordance with section (3) of the GNU General Public License.//// This exception does not invalidate any other reasons why a work based on// this file might be covered by the GNU General Public License.//// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.// at http://sources.redhat.com/ecos/ecos-license/// -------------------------------------------//####ECOSGPLCOPYRIGHTEND####// ====================================================================//#####DESCRIPTIONBEGIN####//// Author(s): 	        hmt// Contributors:	hmt// Date:	        1999-02-01// Purpose:	        Bootup code, platform oriented.// Description:////####DESCRIPTIONEND####//// ====================================================================// External Platform Initial Setup//// This should set up RAM and caches, and calm down any external// interrupt sources.//// It is just plain included in vectors.S//// RAM has not yet been touched at all; in fact all you have is a// register window selected.	! Empty macro for debugging vectors.S	.macro led val        .endm	! Set memory according to simulator config	set	0x80000000, %l0		! LEON register base address        ld      [%l0 + 0x14], %l1       ! chech if we have been initialized	andcc	%l1, 0x1, %g0	bne	4f	nop	flush				! if we are here, we are running on	set	0x1000f, %l1		! the simulator....        st      %l1, [%l0 + 0x14]       ! enable caches        st      %g0, [%l0 + 0x1c]       ! clear LEON registers        st      %g0, [%l0 + 0x20]       !         st      %g0, [%l0 + 0x90]       !         st      %g0, [%l0 + 0x94]       !         st      %g0, [%l0 + 0x98]       !         st      %g0, [%l0 + 0x9C]       !         st      %g0, [%l0 + 0xA0]       !         st      %g0, [%l0 + 0xA4]       !         st      %g0, [%l0 + 0xA4]       !         st      %g0, [%l0 + 0x78]       !         st      %g0, [%l0 + 0x88]       !         ld      [%l0 + 0xF8], %g1	! load simulator rom size	clr	%l2	subcc	%g1, 0, %g0	be	3f	srl	%g1, 13, %g1		! calculate appropriate rom size1:	srl	%g1, 1, %g1	tst	%g1	bne,a	1b	inc	%l2	sll	%l2, 14, %l2	st	%l2, [%l0 + 0x00]	! set prom size in memcfg1	set	0, %l2        ld      [%l0 + 0xF4], %g2	! load simulator ram size	srl	%g2, 13, %g1		! calculate appropriate ram size1:	srl	%g1, 1, %g1	tst	%g1	bne,a	1b	inc	%l2	sll	%l2, 9, %l2	or	%l2, 0x20, %l2	st	%l2, [%l0 + 0x04]	! set ram size in memcfg2	set	0x40000000, %l2	add	%g2, %l2, %fp	sub	%fp, 96*4, %sp3: 	st	%g0, [%sp]		!probe for FPU!	ld	[%sp], %fsr	set	49, %l1        st      %l1, [%l0 + 0x64]       ! scaler = 49        st      %l1, [%l0 + 0x60]       ! scaler = 492:	set	-1, %l1        st      %l1, [%l0 + 0x44]       ! timer 1 = 0xffffff	set	7, %l1        st      %l1, [%l0 + 0x48]       ! start timer 1   	st	%l1, [%l0 + 0x78] 	! enable UARTS  	st	%l1, [%l0 + 0x88]4:	! then copy the branch instructions into the vector	rd	%tbr, %g1	andn	%g1, 0xfff, %g1		! clear non-address bits	sethi	%hi(real_vector_instructions), %l0	or	%l0, %lo(real_vector_instructions), %l0	ld	[ %l0 ], %l1	st	%l1, [ %g1 ]		! into the vector	ld	[ %l0 + 4 ], %l1	st	%l1, [ %g1 + 4 ]	! into the vector#endif  /* CYGONCE_HAL_HALBOOT_SI *//* EOF halboot.si */