diff options
Diffstat (limited to 'bsps/sparc/shared/start/start.S')
| -rw-r--r-- | bsps/sparc/shared/start/start.S | 60 |
1 files changed, 46 insertions, 14 deletions
diff --git a/bsps/sparc/shared/start/start.S b/bsps/sparc/shared/start/start.S index 45bd145d4a..8a22f8ff74 100644 --- a/bsps/sparc/shared/start/start.S +++ b/bsps/sparc/shared/start/start.S @@ -1,3 +1,5 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + /** * Common start code for SPARC. * @@ -10,9 +12,26 @@ * COPYRIGHT (c) 1989-2011. * On-Line Applications Research Corporation (OAR). * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. + * 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER 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 <rtems/asm.h> @@ -474,17 +493,13 @@ SYM(hard_reset): mov %sp, %fp ! set frame pointer #if defined(START_LEON3_ENABLE_SMP) - /* If LEON3_Boot_Cpu < 0 then assign us as boot CPU and continue. */ - set SYM(LEON3_Boot_Cpu), %l0 - ld [%l0], %l1 - tst %l1 - bneg .Lbootcpu - nop - - call SYM(bsp_start_on_secondary_processor) ! does not return - mov %g6, %o0 -.Lbootcpu: - st %l7, [%l0] + /* If .Lbootcpuindex < 0 then assign us as boot CPU and continue. */ + set SYM(.Lbootcpuindex), %l0 + mov -1, %l1 + casa [%l0] (10), %l1, %l7 + cmp %l1, %l7 + bne .Lbootsecondarycpu + nop #endif /* clear the bss */ @@ -508,4 +523,21 @@ SYM(hard_reset): call SYM(boot_card) ! does not return mov %g0, %o0 ! command line +#if defined(START_LEON3_ENABLE_SMP) +.Lbootsecondarycpu: + call SYM(bsp_start_on_secondary_processor) ! does not return + mov %g6, %o0 + + /* + * This is the index of the boot CPU. Set by the first CPU at boot to + * its CPU index. + */ + .section .data, "aw" + .align 4 + .type .Lbootcpuindex, #object + .size .Lbootcpuindex, 4 +.Lbootcpuindex: + .long -1 +#endif + /* end of file */ |