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OpenCloudOS-Kernel/arch/alpha/kernel/head.S

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
fix file specification in comments Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-04 05:01:26 +08:00
* arch/alpha/kernel/head.S
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
*
* initial boot stuff.. At this point, the bootloader has already
* switched into OSF/1 PAL-code, and loaded us at the correct address
* (START_ADDR). So there isn't much left for us to do: just set up
* the kernel global pointer and jump to the kernel entry-point.
*/
alpha: convert to use __HEAD and HEAD_TEXT macros. This has the consequence of changing the section name use for head code from ".text.head" to ".head.text". Since this commit changes all users in the architecture, this change should be harmless. Signed-off-by: Tim Abbott <tabbott@mit.edu> Cc: Richard Henderson <rth@twiddle.net> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-26 10:10:58 +08:00
#include <linux/init.h>
kbuild: alpha,x86_64 use generic asm-offsets.h support Delete obsolete stuff from arch makefiles Rename .h file to asm-offsets.h Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-09-10 03:28:48 +08:00
#include <asm/asm-offsets.h>
Disintegrate asm/system.h for Alpha Disintegrate asm/system.h for Alpha. Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-alpha@vger.kernel.org
2012-03-29 01:11:12 +08:00
#include <asm/pal.h>
#include <asm/setup.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
alpha: convert to use __HEAD and HEAD_TEXT macros. This has the consequence of changing the section name use for head code from ".text.head" to ".head.text". Since this commit changes all users in the architecture, this change should be harmless. Signed-off-by: Tim Abbott <tabbott@mit.edu> Cc: Richard Henderson <rth@twiddle.net> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-26 10:10:58 +08:00
__HEAD
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
.globl _stext
.set noreorder
.globl __start
.ent __start
_stext:
__start:
.prologue 0
br $27,1f
1: ldgp $29,0($27)
/* We need to get current_task_info loaded up... */
lda $8,init_thread_union
/* ... and find our stack ... */
lda $30,0x4000 - SIZEOF_PT_REGS($8)
/* ... and then we can start the kernel. */
jsr $26,start_kernel
call_pal PAL_halt
.end __start
#ifdef CONFIG_SMP
.align 3
.globl __smp_callin
.ent __smp_callin
/* On entry here from SRM console, the HWPCB of the per-cpu
slot for this processor has been loaded. We've arranged
for the UNIQUE value for this process to contain the PCBB
of the target idle task. */
__smp_callin:
.prologue 1
ldgp $29,0($27) # First order of business, load the GP.
call_pal PAL_rduniq # Grab the target PCBB.
mov $0,$16 # Install it.
call_pal PAL_swpctx
lda $8,0x3fff # Find "current".
bic $30,$8,$8
jsr $26,smp_callin
call_pal PAL_halt
.end __smp_callin
#endif /* CONFIG_SMP */
#
# The following two functions are needed for supporting SRM PALcode
# on the PC164 (at least), since that PALcode manages the interrupt
# masking, and we cannot duplicate the effort without causing problems
#
.align 3
.globl cserve_ena
.ent cserve_ena
cserve_ena:
.prologue 0
bis $16,$16,$17
lda $16,52($31)
call_pal PAL_cserve
ret ($26)
.end cserve_ena
.align 3
.globl cserve_dis
.ent cserve_dis
cserve_dis:
.prologue 0
bis $16,$16,$17
lda $16,53($31)
call_pal PAL_cserve
ret ($26)
.end cserve_dis
#
# It is handy, on occasion, to make halt actually just loop.
# Putting it here means we dont have to recompile the whole
# kernel.
#
.align 3
.globl halt
.ent halt
halt:
.prologue 0
call_pal PAL_halt
.end halt