| /* |
| * 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 <linux/init.h> |
| |
| #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> |
| |
| #define CP0_EBASE $15 |
| |
| .set noreorder |
| .set noat |
| .set arch=xlr /* for mfcr/mtcr, XLR is sufficient */ |
| |
| FEXPORT(xlp_boot_core0_siblings) /* "Master" cpu starts from here */ |
| dmtc0 sp, $4, 2 /* SP saved in UserLocal */ |
| SAVE_ALL |
| sync |
| /* find the location to which nlm_boot_siblings was relocated */ |
| li t0, CKSEG1ADDR(RESET_VEC_PHYS) |
| dla t1, nlm_reset_entry |
| dla t2, nlm_boot_siblings |
| dsubu t2, t1 |
| daddu t2, t0 |
| /* call it */ |
| jr t2 |
| nop |
| /* not reached */ |
| |
| 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, 1 |
| 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 */ |
| |
| 1: wait |
| b 1b |
| nop |
| END(nlm_rmiboot_preboot) |
