diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc64/shared/start/start.S')
| -rw-r--r-- | c/src/lib/libbsp/sparc64/shared/start/start.S | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/c/src/lib/libbsp/sparc64/shared/start/start.S b/c/src/lib/libbsp/sparc64/shared/start/start.S deleted file mode 100644 index 92c2177c1e..0000000000 --- a/c/src/lib/libbsp/sparc64/shared/start/start.S +++ /dev/null @@ -1,151 +0,0 @@ -# -# Copyright (c) 2006 Martin Decky -# Copyright (c) 2006 Jakub Jermar -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions -# are met: -# -# - Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# - 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. -# - The name of the author may not be used to endorse or promote products -# derived from this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. -# - -/* - * start.S - * - * Start code for Sparc64 RTEMS - * - * This is based on the boot.S file of the HelenOS sparc64 architecture. - * http://www.helenos.org/ - * ${helenos}/boot/arch/sparc64/loader/boot.S - * - * Modifications for the RTEMS executive are - * COPYRIGHT (c) 2010 Gedare Bloom. - * COPYRIGHT (c) 2010 Eugen Leontie. - */ - -#include <rtems/asm.h> -#include <rtems/score/cpu.h> - -#define PSTATE_PRIV_BIT 4 - -.register %g2, #scratch -.register %g3, #scratch -.register %g6, #scratch -.register %g7, #scratch - -.section BOOTSTRAP, "ax" - -PUBLIC(_start) - .global _start - SYM(_start): - start: - b 1f - nop - - /* - * This header forces SILO to load the image at 0x4000. - * More precisely, SILO will think this is an old version of Linux. - */ - .ascii "HdrS" - .word 0 - .half 0 - .half 0 - .half 0 - .half 0 - .global silo_ramdisk_image - silo_ramdisk_image: - .word 0 - .global silo_ramdisk_size - silo_ramdisk_size: - .word 0 - - .align 8 - 1: - /* - * Disable interrupts and disable address masking. - */ - wrpr %g0, PSTATE_PRIV_BIT, %pstate - - wrpr %g0, SPARC_NUMBER_OF_REGISTER_WINDOWS - 2, %cansave ! set maximum saveable windows - wrpr %g0, 0, %canrestore ! get rid of windows we will never need again - wrpr %g0, 0, %otherwin ! make sure the window state is consistent - wrpr %g0, SPARC_NUMBER_OF_REGISTER_WINDOWS - 1, %cleanwin ! prevent needless clean_window traps for kernel - - /* g4 needs to be cleared for gcc */ - mov %g0, %g4 - - /* Clear the bss */ - setx SYM(bss_start), %l0, %g2 ! g2 = start of bss - setx SYM(_end), %l0, %g3 ! g3 = end of bss -zerobss: - stx %g0, [%g2] - add %g2, 8, %g2 - cmp %g2, %g3 - bleu,a zerobss - nop - - /* Install stack */ -setstack: - set SYM(StackStart), %sp - add %sp, -STACK_BIAS, %sp - - /* BSP-specific pre-bootcard initializations */ - call SYM(_BSP_init) - nop - - setx ofw_cif, %l0, %l1 - - call ofw_init ! initialize OpenFirmware - stx %o4, [%l1] - - call bootstrap - nop - - - /* Set up ISR handler for interrupt enable/disable */ - setx SYM(syscall), %l0, %o1 - setx param_space, %l0, %o2 - call SYM(_CPU_ISR_install_raw_handler) - mov 0x100, %o0 - - /* Don't need to copy initialized data to RAM--link puts all in RAM already */ - - mov %g0, %o0 ! clear command line passed to main - call SYM(boot_card) - sub %sp, 0x60, %sp ! make room on stack (necessary?) - - call SYM(halt) - nop - -halted: nop - b SYM(halted) - -.section BOOTSTRAP - .align CPU_ALIGNMENT - .space 32768 - SPARC64_MINIMUM_STACK_FRAME_SIZE ! 32K boot stack grows down - .global StackStart - StackStart: - .space SPARC64_MINIMUM_STACK_FRAME_SIZE ! initial stack frame - -.section BOOTSTRAP - .align CPU_ALIGNMENT - param_space: - .space 8 |