mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-18 07:09:02 +07:00
a8b3b0c94a
The netlogic platform can be built for either MIPS32 or MIPS64, and when
built for MIPS32 (as by nlm_xlr_defconfig) the use of the dla
pseudo-instruction leads to warnings such as the following from recent
versions of the GNU assembler:
arch/mips/netlogic/common/smpboot.S: Assembler messages:
arch/mips/netlogic/common/smpboot.S:62: Warning: dla used to load 32-bit register; recommend using la instead
arch/mips/netlogic/common/smpboot.S:63: Warning: dla used to load 32-bit register; recommend using la instead
Avoid these warnings by using the PTR_LA macro to make use of the
appropriate la or dla pseudo-instruction for the build.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: 66d29985fa ("MIPS: Netlogic: Merge some of XLR/XLP wakup code")
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14185/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
142 lines
4.1 KiB
ArmAsm
142 lines
4.1 KiB
ArmAsm
/*
|
|
* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
|
|
* reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the NetLogic
|
|
* license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
|
|
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
|
|
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
#include <asm/asm.h>
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm/regdef.h>
|
|
#include <asm/mipsregs.h>
|
|
#include <asm/stackframe.h>
|
|
#include <asm/asmmacro.h>
|
|
#include <asm/addrspace.h>
|
|
|
|
#include <asm/netlogic/common.h>
|
|
|
|
#include <asm/netlogic/xlp-hal/iomap.h>
|
|
#include <asm/netlogic/xlp-hal/xlp.h>
|
|
#include <asm/netlogic/xlp-hal/sys.h>
|
|
#include <asm/netlogic/xlp-hal/cpucontrol.h>
|
|
|
|
.set noreorder
|
|
.set noat
|
|
.set arch=xlr /* for mfcr/mtcr, XLR is sufficient */
|
|
|
|
/* Called by the boot cpu to wake up its sibling threads */
|
|
NESTED(xlp_boot_core0_siblings, PT_SIZE, sp)
|
|
/* CPU register contents lost when enabling threads, save them first */
|
|
SAVE_ALL
|
|
sync
|
|
/* find the location to which nlm_boot_siblings was relocated */
|
|
li t0, CKSEG1ADDR(RESET_VEC_PHYS)
|
|
PTR_LA t1, nlm_reset_entry
|
|
PTR_LA t2, nlm_boot_siblings
|
|
dsubu t2, t1
|
|
daddu t2, t0
|
|
/* call it */
|
|
jalr t2
|
|
nop
|
|
RESTORE_ALL
|
|
jr ra
|
|
nop
|
|
END(xlp_boot_core0_siblings)
|
|
|
|
NESTED(nlm_boot_secondary_cpus, 16, sp)
|
|
/* Initialize CP0 Status */
|
|
move t1, zero
|
|
#ifdef CONFIG_64BIT
|
|
ori t1, ST0_KX
|
|
#endif
|
|
mtc0 t1, CP0_STATUS
|
|
PTR_LA t1, nlm_next_sp
|
|
PTR_L sp, 0(t1)
|
|
PTR_LA t1, nlm_next_gp
|
|
PTR_L gp, 0(t1)
|
|
|
|
/* a0 has the processor id */
|
|
mfc0 a0, CP0_EBASE
|
|
andi a0, 0x3ff /* a0 <- node/core */
|
|
PTR_LA t0, nlm_early_init_secondary
|
|
jalr t0
|
|
nop
|
|
|
|
PTR_LA t0, smp_bootstrap
|
|
jr t0
|
|
nop
|
|
END(nlm_boot_secondary_cpus)
|
|
|
|
/*
|
|
* In case of RMIboot bootloader which is used on XLR boards, the CPUs
|
|
* be already woken up and waiting in bootloader code.
|
|
* This will get them out of the bootloader code and into linux. Needed
|
|
* because the bootloader area will be taken and initialized by linux.
|
|
*/
|
|
NESTED(nlm_rmiboot_preboot, 16, sp)
|
|
mfc0 t0, $15, 1 /* read ebase */
|
|
andi t0, 0x1f /* t0 has the processor_id() */
|
|
andi t2, t0, 0x3 /* thread num */
|
|
sll t0, 2 /* offset in cpu array */
|
|
|
|
li t3, CKSEG1ADDR(RESET_DATA_PHYS)
|
|
ADDIU t1, t3, BOOT_CPU_READY
|
|
ADDU t1, t0
|
|
li t3, 1
|
|
sw t3, 0(t1)
|
|
|
|
bnez t2, 1f /* skip thread programming */
|
|
nop /* for thread id != 0 */
|
|
|
|
/*
|
|
* XLR MMU setup only for first thread in core
|
|
*/
|
|
li t0, 0x400
|
|
mfcr t1, t0
|
|
li t2, 6 /* XLR thread mode mask */
|
|
nor t3, t2, zero
|
|
and t2, t1, t2 /* t2 - current thread mode */
|
|
li v0, CKSEG1ADDR(RESET_DATA_PHYS)
|
|
lw v1, BOOT_THREAD_MODE(v0) /* v1 - new thread mode */
|
|
sll v1, 1
|
|
beq v1, t2, 1f /* same as request value */
|
|
nop /* nothing to do */
|
|
|
|
and t2, t1, t3 /* mask out old thread mode */
|
|
or t1, t2, v1 /* put in new value */
|
|
mtcr t1, t0 /* update core control */
|
|
|
|
/* wait for NMI to hit */
|
|
1: wait
|
|
b 1b
|
|
nop
|
|
END(nlm_rmiboot_preboot)
|