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linux/arch/ppc64/kernel/misc.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!
2005-04-16 22:20:36 +00:00
/*
* arch/ppc/kernel/misc.S
*
*
*
* This file contains miscellaneous low-level functions.
* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
*
* Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
* and Paul Mackerras.
* Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
* PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <linux/config.h>
#include <linux/sys.h>
#include <asm/unistd.h>
#include <asm/errno.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/cache.h>
#include <asm/ppc_asm.h>
#include <asm/offsets.h>
#include <asm/cputable.h>
.text
/*
[PATCH] ppc64: fix reloc_offset comment The code in reloc_offset is actually subtracting the address in the link register from the address calculated by the linker. Perhaps the extended mnemonic `sub' replaced an original `subf' and the comment just did not get updated. bl 1f 1: mflr r3 LOADADDR(r4,1b) sub r3,r4,r3 Signed-off-by: Amos Waterland <apw@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-06 03:35:04 +00:00
* Returns (address we were linked at) - (address we are running at)
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!
2005-04-16 22:20:36 +00:00
* for use before the text and data are mapped to KERNELBASE.
*/
_GLOBAL(reloc_offset)
mflr r0
bl 1f
1: mflr r3
LOADADDR(r4,1b)
sub r3,r4,r3
mtlr r0
blr
_GLOBAL(get_msr)
mfmsr r3
blr
_GLOBAL(get_dar)
mfdar r3
blr
_GLOBAL(get_srr0)
mfsrr0 r3
blr
_GLOBAL(get_srr1)
mfsrr1 r3
blr
_GLOBAL(get_sp)
mr r3,r1
blr
#ifdef CONFIG_PPC_ISERIES
/* unsigned long local_save_flags(void) */
_GLOBAL(local_get_flags)
lbz r3,PACAPROCENABLED(r13)
blr
/* unsigned long local_irq_disable(void) */
_GLOBAL(local_irq_disable)
lbz r3,PACAPROCENABLED(r13)
li r4,0
stb r4,PACAPROCENABLED(r13)
blr /* Done */
/* void local_irq_restore(unsigned long flags) */
_GLOBAL(local_irq_restore)
lbz r5,PACAPROCENABLED(r13)
/* Check if things are setup the way we want _already_. */
cmpw 0,r3,r5
beqlr
/* are we enabling interrupts? */
cmpdi 0,r3,0
stb r3,PACAPROCENABLED(r13)
beqlr
/* Check pending interrupts */
/* A decrementer, IPI or PMC interrupt may have occurred
* while we were in the hypervisor (which enables) */
ld r4,PACALPPACA+LPPACAANYINT(r13)
cmpdi r4,0
beqlr
/*
* Handle pending interrupts in interrupt context
*/
li r0,0x5555
sc
blr
#endif /* CONFIG_PPC_ISERIES */
#ifdef CONFIG_IRQSTACKS
_GLOBAL(call_do_softirq)
mflr r0
std r0,16(r1)
stdu r1,THREAD_SIZE-112(r3)
mr r1,r3
bl .__do_softirq
ld r1,0(r1)
ld r0,16(r1)
mtlr r0
blr
_GLOBAL(call_handle_IRQ_event)
mflr r0
std r0,16(r1)
stdu r1,THREAD_SIZE-112(r6)
mr r1,r6
bl .handle_IRQ_event
ld r1,0(r1)
ld r0,16(r1)
mtlr r0
blr
#endif /* CONFIG_IRQSTACKS */
/*
* To be called by C code which needs to do some operations with MMU
* disabled. Note that interrupts have to be disabled by the caller
* prior to calling us. The code called _MUST_ be in the RMO of course
* and part of the linear mapping as we don't attempt to translate the
* stack pointer at all. The function is called with the stack switched
* to this CPU emergency stack
*
* prototype is void *call_with_mmu_off(void *func, void *data);
*
* the called function is expected to be of the form
*
* void *called(void *data);
*/
_GLOBAL(call_with_mmu_off)
mflr r0 /* get link, save it on stackframe */
std r0,16(r1)
mr r1,r5 /* save old stack ptr */
ld r1,PACAEMERGSP(r13) /* get emerg. stack */
subi r1,r1,STACK_FRAME_OVERHEAD
std r0,16(r1) /* save link on emerg. stack */
std r5,0(r1) /* save old stack ptr in backchain */
ld r3,0(r3) /* get to real function ptr (assume same TOC) */
bl 2f /* we need LR to return, continue at label 2 */
ld r0,16(r1) /* we return here from the call, get LR and */
ld r1,0(r1) /* .. old stack ptr */
mtspr SPRN_SRR0,r0 /* and get back to virtual mode with these */
mfmsr r4
ori r4,r4,MSR_IR|MSR_DR
mtspr SPRN_SRR1,r4
rfid
2: mtspr SPRN_SRR0,r3 /* coming from above, enter real mode */
mr r3,r4 /* get parameter */
mfmsr r0
ori r0,r0,MSR_IR|MSR_DR
xori r0,r0,MSR_IR|MSR_DR
mtspr SPRN_SRR1,r0
rfid
.section ".toc","aw"
PPC64_CACHES:
.tc ppc64_caches[TC],ppc64_caches
.section ".text"
/*
* Write any modified data cache blocks out to memory
* and invalidate the corresponding instruction cache blocks.
*
* flush_icache_range(unsigned long start, unsigned long stop)
*
* flush all bytes from start through stop-1 inclusive
*/
_GLOBAL(__flush_icache_range)
/*
* Flush the data cache to memory
*
* Different systems have different cache line sizes
* and in some cases i-cache and d-cache line sizes differ from
* each other.
*/
ld r10,PPC64_CACHES@toc(r2)
lwz r7,DCACHEL1LINESIZE(r10)/* Get cache line size */
addi r5,r7,-1
andc r6,r3,r5 /* round low to line bdy */
subf r8,r6,r4 /* compute length */
add r8,r8,r5 /* ensure we get enough */
lwz r9,DCACHEL1LOGLINESIZE(r10) /* Get log-2 of cache line size */
srw. r8,r8,r9 /* compute line count */
beqlr /* nothing to do? */
mtctr r8
1: dcbst 0,r6
add r6,r6,r7
bdnz 1b
sync
/* Now invalidate the instruction cache */
lwz r7,ICACHEL1LINESIZE(r10) /* Get Icache line size */
addi r5,r7,-1
andc r6,r3,r5 /* round low to line bdy */
subf r8,r6,r4 /* compute length */
add r8,r8,r5
lwz r9,ICACHEL1LOGLINESIZE(r10) /* Get log-2 of Icache line size */
srw. r8,r8,r9 /* compute line count */
beqlr /* nothing to do? */
mtctr r8
2: icbi 0,r6
add r6,r6,r7
bdnz 2b
isync
blr
/*
* Like above, but only do the D-cache.
*
* flush_dcache_range(unsigned long start, unsigned long stop)
*
* flush all bytes from start to stop-1 inclusive
*/
_GLOBAL(flush_dcache_range)
/*
* Flush the data cache to memory
*
* Different systems have different cache line sizes
*/
ld r10,PPC64_CACHES@toc(r2)
lwz r7,DCACHEL1LINESIZE(r10) /* Get dcache line size */
addi r5,r7,-1
andc r6,r3,r5 /* round low to line bdy */
subf r8,r6,r4 /* compute length */
add r8,r8,r5 /* ensure we get enough */
lwz r9,DCACHEL1LOGLINESIZE(r10) /* Get log-2 of dcache line size */
srw. r8,r8,r9 /* compute line count */
beqlr /* nothing to do? */
mtctr r8
0: dcbst 0,r6
add r6,r6,r7
bdnz 0b
sync
blr
/*
* Like above, but works on non-mapped physical addresses.
* Use only for non-LPAR setups ! It also assumes real mode
* is cacheable. Used for flushing out the DART before using
* it as uncacheable memory
*
* flush_dcache_phys_range(unsigned long start, unsigned long stop)
*
* flush all bytes from start to stop-1 inclusive
*/
_GLOBAL(flush_dcache_phys_range)
ld r10,PPC64_CACHES@toc(r2)
lwz r7,DCACHEL1LINESIZE(r10) /* Get dcache line size */
addi r5,r7,-1
andc r6,r3,r5 /* round low to line bdy */
subf r8,r6,r4 /* compute length */
add r8,r8,r5 /* ensure we get enough */
lwz r9,DCACHEL1LOGLINESIZE(r10) /* Get log-2 of dcache line size */
srw. r8,r8,r9 /* compute line count */
beqlr /* nothing to do? */
mfmsr r5 /* Disable MMU Data Relocation */
ori r0,r5,MSR_DR
xori r0,r0,MSR_DR
sync
mtmsr r0
sync
isync
mtctr r8
0: dcbst 0,r6
add r6,r6,r7
bdnz 0b
sync
isync
mtmsr r5 /* Re-enable MMU Data Relocation */
sync
isync
blr
_GLOBAL(flush_inval_dcache_range)
ld r10,PPC64_CACHES@toc(r2)
lwz r7,DCACHEL1LINESIZE(r10) /* Get dcache line size */
addi r5,r7,-1
andc r6,r3,r5 /* round low to line bdy */
subf r8,r6,r4 /* compute length */
add r8,r8,r5 /* ensure we get enough */
lwz r9,DCACHEL1LOGLINESIZE(r10)/* Get log-2 of dcache line size */
srw. r8,r8,r9 /* compute line count */
beqlr /* nothing to do? */
sync
isync
mtctr r8
0: dcbf 0,r6
add r6,r6,r7
bdnz 0b
sync
isync
blr
/*
* Flush a particular page from the data cache to RAM.
* Note: this is necessary because the instruction cache does *not*
* snoop from the data cache.
*
* void __flush_dcache_icache(void *page)
*/
_GLOBAL(__flush_dcache_icache)
/*
* Flush the data cache to memory
*
* Different systems have different cache line sizes
*/
/* Flush the dcache */
ld r7,PPC64_CACHES@toc(r2)
clrrdi r3,r3,12 /* Page align */
lwz r4,DCACHEL1LINESPERPAGE(r7) /* Get # dcache lines per page */
lwz r5,DCACHEL1LINESIZE(r7) /* Get dcache line size */
mr r6,r3
mtctr r4
0: dcbst 0,r6
add r6,r6,r5
bdnz 0b
sync
/* Now invalidate the icache */
lwz r4,ICACHEL1LINESPERPAGE(r7) /* Get # icache lines per page */
lwz r5,ICACHEL1LINESIZE(r7) /* Get icache line size */
mtctr r4
1: icbi 0,r3
add r3,r3,r5
bdnz 1b
isync
blr
/*
* I/O string operations
*
* insb(port, buf, len)
* outsb(port, buf, len)
* insw(port, buf, len)
* outsw(port, buf, len)
* insl(port, buf, len)
* outsl(port, buf, len)
* insw_ns(port, buf, len)
* outsw_ns(port, buf, len)
* insl_ns(port, buf, len)
* outsl_ns(port, buf, len)
*
* The *_ns versions don't do byte-swapping.
*/
_GLOBAL(_insb)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,1
blelr-
00: lbz r5,0(r3)
eieio
stbu r5,1(r4)
bdnz 00b
twi 0,r5,0
isync
blr
_GLOBAL(_outsb)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,1
blelr-
00: lbzu r5,1(r4)
stb r5,0(r3)
bdnz 00b
sync
blr
_GLOBAL(_insw)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,2
blelr-
00: lhbrx r5,0,r3
eieio
sthu r5,2(r4)
bdnz 00b
twi 0,r5,0
isync
blr
_GLOBAL(_outsw)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,2
blelr-
00: lhzu r5,2(r4)
sthbrx r5,0,r3
bdnz 00b
sync
blr
_GLOBAL(_insl)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,4
blelr-
00: lwbrx r5,0,r3
eieio
stwu r5,4(r4)
bdnz 00b
twi 0,r5,0
isync
blr
_GLOBAL(_outsl)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,4
blelr-
00: lwzu r5,4(r4)
stwbrx r5,0,r3
bdnz 00b
sync
blr
/* _GLOBAL(ide_insw) now in drivers/ide/ide-iops.c */
_GLOBAL(_insw_ns)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,2
blelr-
00: lhz r5,0(r3)
eieio
sthu r5,2(r4)
bdnz 00b
twi 0,r5,0
isync
blr
/* _GLOBAL(ide_outsw) now in drivers/ide/ide-iops.c */
_GLOBAL(_outsw_ns)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,2
blelr-
00: lhzu r5,2(r4)
sth r5,0(r3)
bdnz 00b
sync
blr
_GLOBAL(_insl_ns)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,4
blelr-
00: lwz r5,0(r3)
eieio
stwu r5,4(r4)
bdnz 00b
twi 0,r5,0
isync
blr
_GLOBAL(_outsl_ns)
cmpwi 0,r5,0
mtctr r5
subi r4,r4,4
blelr-
00: lwzu r5,4(r4)
stw r5,0(r3)
bdnz 00b
sync
blr
_GLOBAL(cvt_fd)
lfd 0,0(r5) /* load up fpscr value */
mtfsf 0xff,0
lfs 0,0(r3)
stfd 0,0(r4)
mffs 0 /* save new fpscr value */
stfd 0,0(r5)
blr
_GLOBAL(cvt_df)
lfd 0,0(r5) /* load up fpscr value */
mtfsf 0xff,0
lfd 0,0(r3)
stfs 0,0(r4)
mffs 0 /* save new fpscr value */
stfd 0,0(r5)
blr
/*
* identify_cpu and calls setup_cpu
* In: r3 = base of the cpu_specs array
* r4 = address of cur_cpu_spec
* r5 = relocation offset
*/
_GLOBAL(identify_cpu)
mfpvr r7
1:
lwz r8,CPU_SPEC_PVR_MASK(r3)
and r8,r8,r7
lwz r9,CPU_SPEC_PVR_VALUE(r3)
cmplw 0,r9,r8
beq 1f
addi r3,r3,CPU_SPEC_ENTRY_SIZE
b 1b
1:
add r0,r3,r5
std r0,0(r4)
ld r4,CPU_SPEC_SETUP(r3)
sub r4,r4,r5
ld r4,0(r4)
sub r4,r4,r5
mtctr r4
/* Calling convention for cpu setup is r3=offset, r4=cur_cpu_spec */
mr r4,r3
mr r3,r5
bctr
/*
* do_cpu_ftr_fixups - goes through the list of CPU feature fixups
* and writes nop's over sections of code that don't apply for this cpu.
* r3 = data offset (not changed)
*/
_GLOBAL(do_cpu_ftr_fixups)
/* Get CPU 0 features */
LOADADDR(r6,cur_cpu_spec)
sub r6,r6,r3
ld r4,0(r6)
sub r4,r4,r3
ld r4,CPU_SPEC_FEATURES(r4)
/* Get the fixup table */
LOADADDR(r6,__start___ftr_fixup)
sub r6,r6,r3
LOADADDR(r7,__stop___ftr_fixup)
sub r7,r7,r3
/* Do the fixup */
1: cmpld r6,r7
bgelr
addi r6,r6,32
ld r8,-32(r6) /* mask */
and r8,r8,r4
ld r9,-24(r6) /* value */
cmpld r8,r9
beq 1b
ld r8,-16(r6) /* section begin */
ld r9,-8(r6) /* section end */
subf. r9,r8,r9
beq 1b
/* write nops over the section of code */
/* todo: if large section, add a branch at the start of it */
srwi r9,r9,2
mtctr r9
sub r8,r8,r3
lis r0,0x60000000@h /* nop */
3: stw r0,0(r8)
andi. r10,r4,CPU_FTR_SPLIT_ID_CACHE@l
beq 2f
dcbst 0,r8 /* suboptimal, but simpler */
sync
icbi 0,r8
2: addi r8,r8,4
bdnz 3b
sync /* additional sync needed on g4 */
isync
b 1b
#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE)
/*
* Do an IO access in real mode
*/
_GLOBAL(real_readb)
mfmsr r7
ori r0,r7,MSR_DR
xori r0,r0,MSR_DR
sync
mtmsrd r0
sync
isync
mfspr r6,SPRN_HID4
rldicl r5,r6,32,0
ori r5,r5,0x100
rldicl r5,r5,32,0
sync
mtspr SPRN_HID4,r5
isync
slbia
isync
lbz r3,0(r3)
sync
mtspr SPRN_HID4,r6
isync
slbia
isync
mtmsrd r7
sync
isync
blr
/*
* Do an IO access in real mode
*/
_GLOBAL(real_writeb)
mfmsr r7
ori r0,r7,MSR_DR
xori r0,r0,MSR_DR
sync
mtmsrd r0
sync
isync
mfspr r6,SPRN_HID4
rldicl r5,r6,32,0
ori r5,r5,0x100
rldicl r5,r5,32,0
sync
mtspr SPRN_HID4,r5
isync
slbia
isync
stb r3,0(r4)
sync
mtspr SPRN_HID4,r6
isync
slbia
isync
mtmsrd r7
sync
isync
blr
#endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) */
/*
* Create a kernel thread
* kernel_thread(fn, arg, flags)
*/
_GLOBAL(kernel_thread)
std r29,-24(r1)
std r30,-16(r1)
stdu r1,-STACK_FRAME_OVERHEAD(r1)
mr r29,r3
mr r30,r4
ori r3,r5,CLONE_VM /* flags */
oris r3,r3,(CLONE_UNTRACED>>16)
li r4,0 /* new sp (unused) */
li r0,__NR_clone
sc
cmpdi 0,r3,0 /* parent or child? */
bne 1f /* return if parent */
li r0,0
stdu r0,-STACK_FRAME_OVERHEAD(r1)
ld r2,8(r29)
ld r29,0(r29)
mtlr r29 /* fn addr in lr */
mr r3,r30 /* load arg and call fn */
blrl
li r0,__NR_exit /* exit after child exits */
li r3,0
sc
1: addi r1,r1,STACK_FRAME_OVERHEAD
ld r29,-24(r1)
ld r30,-16(r1)
blr
[PATCH] ppc64: kexec support for ppc64 This patch implements the kexec support for ppc64 platforms. A couple of notes: 1) We copy the pages in virtual mode, using the full base kernel and a statically allocated stack. At kexec_prepare time we scan the pages and if any overlap our (0, _end[]) range we return -ETXTBSY. On PowerPC 64 systems running in LPAR (logical partitioning) mode, only a small region of memory, referred to as the RMO, can be accessed in real mode. Since Linux runs with only one zone of memory in the memory allocator, and it can be orders of magnitude more memory than the RMO, looping until we allocate pages in the source region is not feasible. Copying in virtual means we don't have to write a hash table generation and call hypervisor to insert translations, instead we rely on the pinned kernel linear mapping. The kernel already has move to linked location built in, so there is no requirement to load it at 0. If we want to load something other than a kernel, then a stub can be written to copy a linear chunk in real mode. 2) The start entry point gets passed parameters from the kernel. Slaves are started at a fixed address after copying code from the entry point. All CPUs get passed their firmware assigned physical id in r3 (most calling conventions use this register for the first argument). This is used to distinguish each CPU from all other CPUs. Since firmware is not around, there is no other way to obtain this information other than to pass it somewhere. A single CPU, referred to here as the master and the one executing the kexec call, branches to start with the address of start in r4. While this can be calculated, we have to load it through a gpr to branch to this point so defining the register this is contained in is free. A stack of unspecified size is available at r1 (also common calling convention). All remaining running CPUs are sent to start at absolute address 0x60 after copying the first 0x100 bytes from start to address 0. This convention was chosen because it matches what the kernel has been doing itself. (only gpr3 is defined). Note: This is not quite the convention of the kexec bootblock v2 in the kernel. A stub has been written to convert between them, and we may adjust the kernel in the future to allow this directly without any stub. 3) Destination pages can be placed anywhere, even where they would not be accessible in real mode. This will allow us to place ram disks above the RMO if we choose. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: R Sharada <sharada@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 21:58:10 +00:00
/* kexec_wait(phys_cpu)
*
* wait for the flag to change, indicating this kernel is going away but
* the slave code for the next one is at addresses 0 to 100.
*
* This is used by all slaves.
*
* Physical (hardware) cpu id should be in r3.
*/
_GLOBAL(kexec_wait)
bl 1f
1: mflr r5
addi r5,r5,kexec_flag-1b
99: HMT_LOW
#ifdef CONFIG_KEXEC /* use no memory without kexec */
lwz r4,0(r5)
cmpwi 0,r4,0
bnea 0x60
#endif
b 99b
/* this can be in text because we won't change it until we are
* running in real anyways
*/
kexec_flag:
.long 0
#ifdef CONFIG_KEXEC
/* kexec_smp_wait(void)
*
* call with interrupts off
* note: this is a terminal routine, it does not save lr
*
* get phys id from paca
* set paca id to -1 to say we got here
* switch to real mode
* join other cpus in kexec_wait(phys_id)
*/
_GLOBAL(kexec_smp_wait)
lhz r3,PACAHWCPUID(r13)
li r4,-1
sth r4,PACAHWCPUID(r13) /* let others know we left */
bl real_mode
b .kexec_wait
/*
* switch to real mode (turn mmu off)
* we use the early kernel trick that the hardware ignores bits
* 0 and 1 (big endian) of the effective address in real mode
*
* don't overwrite r3 here, it is live for kexec_wait above.
*/
real_mode: /* assume normal blr return */
1: li r9,MSR_RI
li r10,MSR_DR|MSR_IR
mflr r11 /* return address to SRR0 */
mfmsr r12
andc r9,r12,r9
andc r10,r12,r10
mtmsrd r9,1
mtspr SPRN_SRR1,r10
mtspr SPRN_SRR0,r11
rfid
/*
* kexec_sequence(newstack, start, image, control, clear_all())
*
* does the grungy work with stack switching and real mode switches
* also does simple calls to other code
*/
_GLOBAL(kexec_sequence)
mflr r0
std r0,16(r1)
/* switch stacks to newstack -- &kexec_stack.stack */
stdu r1,THREAD_SIZE-112(r3)
mr r1,r3
li r0,0
std r0,16(r1)
/* save regs for local vars on new stack.
* yes, we won't go back, but ...
*/
std r31,-8(r1)
std r30,-16(r1)
std r29,-24(r1)
std r28,-32(r1)
std r27,-40(r1)
std r26,-48(r1)
std r25,-56(r1)
stdu r1,-112-64(r1)
/* save args into preserved regs */
mr r31,r3 /* newstack (both) */
mr r30,r4 /* start (real) */
mr r29,r5 /* image (virt) */
mr r28,r6 /* control, unused */
mr r27,r7 /* clear_all() fn desc */
mr r26,r8 /* spare */
lhz r25,PACAHWCPUID(r13) /* get our phys cpu from paca */
/* disable interrupts, we are overwriting kernel data next */
mfmsr r3
rlwinm r3,r3,0,17,15
mtmsrd r3,1
/* copy dest pages, flush whole dest image */
mr r3,r29
bl .kexec_copy_flush /* (image) */
/* turn off mmu */
bl real_mode
/* clear out hardware hash page table and tlb */
ld r5,0(r27) /* deref function descriptor */
mtctr r5
bctrl /* ppc_md.hash_clear_all(void); */
/*
* kexec image calling is:
* the first 0x100 bytes of the entry point are copied to 0
*
* all slaves branch to slave = 0x60 (absolute)
* slave(phys_cpu_id);
*
* master goes to start = entry point
* start(phys_cpu_id, start, 0);
*
*
* a wrapper is needed to call existing kernels, here is an approximate
* description of one method:
*
* v2: (2.6.10)
* start will be near the boot_block (maybe 0x100 bytes before it?)
* it will have a 0x60, which will b to boot_block, where it will wait
* and 0 will store phys into struct boot-block and load r3 from there,
* copy kernel 0-0x100 and tell slaves to back down to 0x60 again
*
* v1: (2.6.9)
* boot block will have all cpus scanning device tree to see if they
* are the boot cpu ?????
* other device tree differences (prop sizes, va vs pa, etc)...
*/
/* copy 0x100 bytes starting at start to 0 */
li r3,0
mr r4,r30
li r5,0x100
li r6,0
bl .copy_and_flush /* (dest, src, copy limit, start offset) */
1: /* assume normal blr return */
/* release other cpus to the new kernel secondary start at 0x60 */
mflr r5
li r6,1
stw r6,kexec_flag-1b(5)
mr r3,r25 # my phys cpu
mr r4,r30 # start, aka phys mem offset
mtlr 4
li r5,0
blr /* image->start(physid, image->start, 0); */
#endif /* CONFIG_KEXEC */
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!
2005-04-16 22:20:36 +00:00
/* Why isn't this a) automatic, b) written in 'C'? */
.balign 8
_GLOBAL(sys_call_table32)
.llong .sys_restart_syscall /* 0 */
.llong .sys_exit
.llong .ppc_fork
.llong .sys_read
.llong .sys_write
.llong .sys32_open /* 5 */
.llong .sys_close
.llong .sys32_waitpid
.llong .sys32_creat
.llong .sys_link
.llong .sys_unlink /* 10 */
.llong .sys32_execve
.llong .sys_chdir
.llong .compat_sys_time
.llong .sys_mknod
.llong .sys_chmod /* 15 */
.llong .sys_lchown
.llong .sys_ni_syscall /* old break syscall */
.llong .sys_ni_syscall /* old stat syscall */
.llong .ppc32_lseek
.llong .sys_getpid /* 20 */
.llong .compat_sys_mount
.llong .sys_oldumount
.llong .sys_setuid
.llong .sys_getuid
.llong .compat_sys_stime /* 25 */
.llong .sys32_ptrace
.llong .sys_alarm
.llong .sys_ni_syscall /* old fstat syscall */
.llong .sys32_pause
.llong .compat_sys_utime /* 30 */
.llong .sys_ni_syscall /* old stty syscall */
.llong .sys_ni_syscall /* old gtty syscall */
.llong .sys32_access
.llong .sys32_nice
.llong .sys_ni_syscall /* 35 - old ftime syscall */
.llong .sys_sync
.llong .sys32_kill
.llong .sys_rename
.llong .sys32_mkdir
.llong .sys_rmdir /* 40 */
.llong .sys_dup
.llong .sys_pipe
.llong .compat_sys_times
.llong .sys_ni_syscall /* old prof syscall */
.llong .sys_brk /* 45 */
.llong .sys_setgid
.llong .sys_getgid
.llong .sys_signal
.llong .sys_geteuid
.llong .sys_getegid /* 50 */
.llong .sys_acct
.llong .sys_umount
.llong .sys_ni_syscall /* old lock syscall */
.llong .compat_sys_ioctl
.llong .compat_sys_fcntl /* 55 */
.llong .sys_ni_syscall /* old mpx syscall */
.llong .sys32_setpgid
.llong .sys_ni_syscall /* old ulimit syscall */
.llong .sys32_olduname
.llong .sys32_umask /* 60 */
.llong .sys_chroot
.llong .sys_ustat
.llong .sys_dup2
.llong .sys_getppid
.llong .sys_getpgrp /* 65 */
.llong .sys_setsid
.llong .sys32_sigaction
.llong .sys_sgetmask
.llong .sys32_ssetmask
.llong .sys_setreuid /* 70 */
.llong .sys_setregid
.llong .ppc32_sigsuspend
.llong .compat_sys_sigpending
.llong .sys32_sethostname
.llong .compat_sys_setrlimit /* 75 */
.llong .compat_sys_old_getrlimit
.llong .compat_sys_getrusage
.llong .sys32_gettimeofday
.llong .sys32_settimeofday
.llong .sys32_getgroups /* 80 */
.llong .sys32_setgroups
.llong .sys_ni_syscall /* old select syscall */
.llong .sys_symlink
.llong .sys_ni_syscall /* old lstat syscall */
.llong .sys32_readlink /* 85 */
.llong .sys_uselib
.llong .sys_swapon
.llong .sys_reboot
.llong .old32_readdir
.llong .sys_mmap /* 90 */
.llong .sys_munmap
.llong .sys_truncate
.llong .sys_ftruncate
.llong .sys_fchmod
.llong .sys_fchown /* 95 */
.llong .sys32_getpriority
.llong .sys32_setpriority
.llong .sys_ni_syscall /* old profil syscall */
.llong .compat_sys_statfs
.llong .compat_sys_fstatfs /* 100 */
.llong .sys_ni_syscall /* old ioperm syscall */
.llong .compat_sys_socketcall
.llong .sys32_syslog
.llong .compat_sys_setitimer
.llong .compat_sys_getitimer /* 105 */
.llong .compat_sys_newstat
.llong .compat_sys_newlstat
.llong .compat_sys_newfstat
[PATCH] ppc64: Fix PER_LINUX32 behaviour This patch fixes some bugs in the ppc64 PER_LINUX32 implementation, noted by Juergen Kreileder: * uname(2) doesn't respect PER_LINUX32, it returns 'ppc64' instead of 'ppc' * Child processes of a PER_LINUX32 process don't inherit PER_LINUX32 Along the way I took the opportunity to move things around so that sys_ppc32.c only has 32-bit syscall emulation functions and to remove the obsolete "fakeppc" command line option. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-08 11:59:15 +00:00
.llong .sys32_uname
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!
2005-04-16 22:20:36 +00:00
.llong .sys_ni_syscall /* 110 old iopl syscall */
.llong .sys_vhangup
.llong .sys_ni_syscall /* old idle syscall */
.llong .sys_ni_syscall /* old vm86 syscall */
.llong .compat_sys_wait4
.llong .sys_swapoff /* 115 */
.llong .sys32_sysinfo
.llong .sys32_ipc
.llong .sys_fsync
.llong .ppc32_sigreturn
.llong .ppc_clone /* 120 */
.llong .sys32_setdomainname
.llong .ppc64_newuname
.llong .sys_ni_syscall /* old modify_ldt syscall */
.llong .sys32_adjtimex
.llong .sys_mprotect /* 125 */
.llong .compat_sys_sigprocmask
.llong .sys_ni_syscall /* old create_module syscall */
.llong .sys_init_module
.llong .sys_delete_module
.llong .sys_ni_syscall /* 130 old get_kernel_syms syscall */
.llong .sys_quotactl
.llong .sys32_getpgid
.llong .sys_fchdir
.llong .sys_bdflush
.llong .sys32_sysfs /* 135 */
.llong .ppc64_personality
.llong .sys_ni_syscall /* for afs_syscall */
.llong .sys_setfsuid
.llong .sys_setfsgid
.llong .sys_llseek /* 140 */
.llong .sys32_getdents
.llong .ppc32_select
.llong .sys_flock
.llong .sys_msync
.llong .compat_sys_readv /* 145 */
.llong .compat_sys_writev
.llong .sys32_getsid
.llong .sys_fdatasync
.llong .sys32_sysctl
.llong .sys_mlock /* 150 */
.llong .sys_munlock
.llong .sys_mlockall
.llong .sys_munlockall
.llong .sys32_sched_setparam
.llong .sys32_sched_getparam /* 155 */
.llong .sys32_sched_setscheduler
.llong .sys32_sched_getscheduler
.llong .sys_sched_yield
.llong .sys32_sched_get_priority_max
.llong .sys32_sched_get_priority_min /* 160 */
.llong .sys32_sched_rr_get_interval
.llong .compat_sys_nanosleep
.llong .sys_mremap
.llong .sys_setresuid
.llong .sys_getresuid /* 165 */
.llong .sys_ni_syscall /* old query_module syscall */
.llong .sys_poll
.llong .compat_sys_nfsservctl
.llong .sys_setresgid
.llong .sys_getresgid /* 170 */
.llong .sys32_prctl
.llong .ppc32_rt_sigreturn
.llong .sys32_rt_sigaction
.llong .sys32_rt_sigprocmask
.llong .sys32_rt_sigpending /* 175 */
.llong .compat_sys_rt_sigtimedwait
.llong .sys32_rt_sigqueueinfo
.llong .ppc32_rt_sigsuspend
.llong .sys32_pread64
.llong .sys32_pwrite64 /* 180 */
.llong .sys_chown
.llong .sys_getcwd
.llong .sys_capget
.llong .sys_capset
.llong .sys32_sigaltstack /* 185 */
.llong .sys32_sendfile
.llong .sys_ni_syscall /* reserved for streams1 */
.llong .sys_ni_syscall /* reserved for streams2 */
.llong .ppc_vfork
.llong .compat_sys_getrlimit /* 190 */
.llong .sys32_readahead
.llong .sys32_mmap2
.llong .sys32_truncate64
.llong .sys32_ftruncate64
.llong .sys_stat64 /* 195 */
.llong .sys_lstat64
.llong .sys_fstat64
.llong .sys32_pciconfig_read
.llong .sys32_pciconfig_write
.llong .sys32_pciconfig_iobase /* 200 - pciconfig_iobase */
.llong .sys_ni_syscall /* reserved for MacOnLinux */
.llong .sys_getdents64
.llong .sys_pivot_root
.llong .compat_sys_fcntl64
.llong .sys_madvise /* 205 */
.llong .sys_mincore
.llong .sys_gettid
.llong .sys_tkill
.llong .sys_setxattr
.llong .sys_lsetxattr /* 210 */
.llong .sys_fsetxattr
.llong .sys_getxattr
.llong .sys_lgetxattr
.llong .sys_fgetxattr
.llong .sys_listxattr /* 215 */
.llong .sys_llistxattr
.llong .sys_flistxattr
.llong .sys_removexattr
.llong .sys_lremovexattr
.llong .sys_fremovexattr /* 220 */
.llong .compat_sys_futex
.llong .compat_sys_sched_setaffinity
.llong .compat_sys_sched_getaffinity
.llong .sys_ni_syscall
.llong .sys_ni_syscall /* 225 - reserved for tux */
.llong .sys32_sendfile64
.llong .compat_sys_io_setup
.llong .sys_io_destroy
.llong .compat_sys_io_getevents
.llong .compat_sys_io_submit
.llong .sys_io_cancel
.llong .sys_set_tid_address
.llong .ppc32_fadvise64
.llong .sys_exit_group
.llong .ppc32_lookup_dcookie /* 235 */
.llong .sys_epoll_create
.llong .sys_epoll_ctl
.llong .sys_epoll_wait
.llong .sys_remap_file_pages
.llong .ppc32_timer_create /* 240 */
.llong .compat_sys_timer_settime
.llong .compat_sys_timer_gettime
.llong .sys_timer_getoverrun
.llong .sys_timer_delete
.llong .compat_sys_clock_settime /* 245 */
.llong .compat_sys_clock_gettime
.llong .compat_sys_clock_getres
.llong .compat_sys_clock_nanosleep
.llong .ppc32_swapcontext
.llong .sys32_tgkill /* 250 */
.llong .sys32_utimes
.llong .compat_sys_statfs64
.llong .compat_sys_fstatfs64
.llong .ppc32_fadvise64_64 /* 32bit only fadvise64_64 */
.llong .ppc_rtas /* 255 */
.llong .sys_ni_syscall /* 256 reserved for sys_debug_setcontext */
.llong .sys_ni_syscall /* 257 reserved for vserver */
.llong .sys_ni_syscall /* 258 reserved for new sys_remap_file_pages */
.llong .compat_sys_mbind
.llong .compat_sys_get_mempolicy /* 260 */
.llong .compat_sys_set_mempolicy
.llong .compat_sys_mq_open
.llong .sys_mq_unlink
.llong .compat_sys_mq_timedsend
.llong .compat_sys_mq_timedreceive /* 265 */
.llong .compat_sys_mq_notify
.llong .compat_sys_mq_getsetattr
[PATCH] ppc64: kexec support for ppc64 This patch implements the kexec support for ppc64 platforms. A couple of notes: 1) We copy the pages in virtual mode, using the full base kernel and a statically allocated stack. At kexec_prepare time we scan the pages and if any overlap our (0, _end[]) range we return -ETXTBSY. On PowerPC 64 systems running in LPAR (logical partitioning) mode, only a small region of memory, referred to as the RMO, can be accessed in real mode. Since Linux runs with only one zone of memory in the memory allocator, and it can be orders of magnitude more memory than the RMO, looping until we allocate pages in the source region is not feasible. Copying in virtual means we don't have to write a hash table generation and call hypervisor to insert translations, instead we rely on the pinned kernel linear mapping. The kernel already has move to linked location built in, so there is no requirement to load it at 0. If we want to load something other than a kernel, then a stub can be written to copy a linear chunk in real mode. 2) The start entry point gets passed parameters from the kernel. Slaves are started at a fixed address after copying code from the entry point. All CPUs get passed their firmware assigned physical id in r3 (most calling conventions use this register for the first argument). This is used to distinguish each CPU from all other CPUs. Since firmware is not around, there is no other way to obtain this information other than to pass it somewhere. A single CPU, referred to here as the master and the one executing the kexec call, branches to start with the address of start in r4. While this can be calculated, we have to load it through a gpr to branch to this point so defining the register this is contained in is free. A stack of unspecified size is available at r1 (also common calling convention). All remaining running CPUs are sent to start at absolute address 0x60 after copying the first 0x100 bytes from start to address 0. This convention was chosen because it matches what the kernel has been doing itself. (only gpr3 is defined). Note: This is not quite the convention of the kexec bootblock v2 in the kernel. A stub has been written to convert between them, and we may adjust the kernel in the future to allow this directly without any stub. 3) Destination pages can be placed anywhere, even where they would not be accessible in real mode. This will allow us to place ram disks above the RMO if we choose. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: R Sharada <sharada@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 21:58:10 +00:00
.llong .compat_sys_kexec_load
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!
2005-04-16 22:20:36 +00:00
.llong .sys32_add_key
.llong .sys32_request_key
.llong .compat_sys_keyctl
.llong .compat_sys_waitid
.balign 8
_GLOBAL(sys_call_table)
.llong .sys_restart_syscall /* 0 */
.llong .sys_exit
.llong .ppc_fork
.llong .sys_read
.llong .sys_write
.llong .sys_open /* 5 */
.llong .sys_close
.llong .sys_waitpid
.llong .sys_creat
.llong .sys_link
.llong .sys_unlink /* 10 */
.llong .sys_execve
.llong .sys_chdir
.llong .sys64_time
.llong .sys_mknod
.llong .sys_chmod /* 15 */
.llong .sys_lchown
.llong .sys_ni_syscall /* old break syscall */
.llong .sys_ni_syscall /* old stat syscall */
.llong .sys_lseek
.llong .sys_getpid /* 20 */
.llong .sys_mount
.llong .sys_ni_syscall /* old umount syscall */
.llong .sys_setuid
.llong .sys_getuid
.llong .sys_stime /* 25 */
.llong .sys_ptrace
.llong .sys_alarm
.llong .sys_ni_syscall /* old fstat syscall */
.llong .sys_pause
.llong .sys_utime /* 30 */
.llong .sys_ni_syscall /* old stty syscall */
.llong .sys_ni_syscall /* old gtty syscall */
.llong .sys_access
.llong .sys_nice
.llong .sys_ni_syscall /* 35 - old ftime syscall */
.llong .sys_sync
.llong .sys_kill
.llong .sys_rename
.llong .sys_mkdir
.llong .sys_rmdir /* 40 */
.llong .sys_dup
.llong .sys_pipe
.llong .sys_times
.llong .sys_ni_syscall /* old prof syscall */
.llong .sys_brk /* 45 */
.llong .sys_setgid
.llong .sys_getgid
.llong .sys_signal
.llong .sys_geteuid
.llong .sys_getegid /* 50 */
.llong .sys_acct
.llong .sys_umount
.llong .sys_ni_syscall /* old lock syscall */
.llong .sys_ioctl
.llong .sys_fcntl /* 55 */
.llong .sys_ni_syscall /* old mpx syscall */
.llong .sys_setpgid
.llong .sys_ni_syscall /* old ulimit syscall */
.llong .sys_ni_syscall /* old uname syscall */
.llong .sys_umask /* 60 */
.llong .sys_chroot
.llong .sys_ustat
.llong .sys_dup2
.llong .sys_getppid
.llong .sys_getpgrp /* 65 */
.llong .sys_setsid
.llong .sys_ni_syscall
.llong .sys_sgetmask
.llong .sys_ssetmask
.llong .sys_setreuid /* 70 */
.llong .sys_setregid
.llong .sys_ni_syscall
.llong .sys_ni_syscall
.llong .sys_sethostname
.llong .sys_setrlimit /* 75 */
.llong .sys_ni_syscall /* old getrlimit syscall */
.llong .sys_getrusage
.llong .sys_gettimeofday
.llong .sys_settimeofday
.llong .sys_getgroups /* 80 */
.llong .sys_setgroups
.llong .sys_ni_syscall /* old select syscall */
.llong .sys_symlink
.llong .sys_ni_syscall /* old lstat syscall */
.llong .sys_readlink /* 85 */
.llong .sys_uselib
.llong .sys_swapon
.llong .sys_reboot
.llong .sys_ni_syscall /* old readdir syscall */
.llong .sys_mmap /* 90 */
.llong .sys_munmap
.llong .sys_truncate
.llong .sys_ftruncate
.llong .sys_fchmod
.llong .sys_fchown /* 95 */
.llong .sys_getpriority
.llong .sys_setpriority
.llong .sys_ni_syscall /* old profil syscall holder */
.llong .sys_statfs
.llong .sys_fstatfs /* 100 */
.llong .sys_ni_syscall /* old ioperm syscall */
.llong .sys_socketcall
.llong .sys_syslog
.llong .sys_setitimer
.llong .sys_getitimer /* 105 */
.llong .sys_newstat
.llong .sys_newlstat
.llong .sys_newfstat
.llong .sys_ni_syscall /* old uname syscall */
.llong .sys_ni_syscall /* 110 old iopl syscall */
.llong .sys_vhangup
.llong .sys_ni_syscall /* old idle syscall */
.llong .sys_ni_syscall /* old vm86 syscall */
.llong .sys_wait4
.llong .sys_swapoff /* 115 */
.llong .sys_sysinfo
.llong .sys_ipc
.llong .sys_fsync
.llong .sys_ni_syscall
.llong .ppc_clone /* 120 */
.llong .sys_setdomainname
.llong .ppc64_newuname
.llong .sys_ni_syscall /* old modify_ldt syscall */
.llong .sys_adjtimex
.llong .sys_mprotect /* 125 */
.llong .sys_ni_syscall
.llong .sys_ni_syscall /* old create_module syscall */
.llong .sys_init_module
.llong .sys_delete_module
.llong .sys_ni_syscall /* 130 old get_kernel_syms syscall */
.llong .sys_quotactl
.llong .sys_getpgid
.llong .sys_fchdir
.llong .sys_bdflush
.llong .sys_sysfs /* 135 */
.llong .ppc64_personality
.llong .sys_ni_syscall /* for afs_syscall */
.llong .sys_setfsuid
.llong .sys_setfsgid
.llong .sys_llseek /* 140 */
.llong .sys_getdents
.llong .sys_select
.llong .sys_flock
.llong .sys_msync
.llong .sys_readv /* 145 */
.llong .sys_writev
.llong .sys_getsid
.llong .sys_fdatasync
.llong .sys_sysctl
.llong .sys_mlock /* 150 */
.llong .sys_munlock
.llong .sys_mlockall
.llong .sys_munlockall
.llong .sys_sched_setparam
.llong .sys_sched_getparam /* 155 */
.llong .sys_sched_setscheduler
.llong .sys_sched_getscheduler
.llong .sys_sched_yield
.llong .sys_sched_get_priority_max
.llong .sys_sched_get_priority_min /* 160 */
.llong .sys_sched_rr_get_interval
.llong .sys_nanosleep
.llong .sys_mremap
.llong .sys_setresuid
.llong .sys_getresuid /* 165 */
.llong .sys_ni_syscall /* old query_module syscall */
.llong .sys_poll
.llong .sys_nfsservctl
.llong .sys_setresgid
.llong .sys_getresgid /* 170 */
.llong .sys_prctl
.llong .ppc64_rt_sigreturn
.llong .sys_rt_sigaction
.llong .sys_rt_sigprocmask
.llong .sys_rt_sigpending /* 175 */
.llong .sys_rt_sigtimedwait
.llong .sys_rt_sigqueueinfo
.llong .ppc64_rt_sigsuspend
.llong .sys_pread64
.llong .sys_pwrite64 /* 180 */
.llong .sys_chown
.llong .sys_getcwd
.llong .sys_capget
.llong .sys_capset
.llong .sys_sigaltstack /* 185 */
.llong .sys_sendfile64
.llong .sys_ni_syscall /* reserved for streams1 */
.llong .sys_ni_syscall /* reserved for streams2 */
.llong .ppc_vfork
.llong .sys_getrlimit /* 190 */
.llong .sys_readahead
.llong .sys_ni_syscall /* 32bit only mmap2 */
.llong .sys_ni_syscall /* 32bit only truncate64 */
.llong .sys_ni_syscall /* 32bit only ftruncate64 */
.llong .sys_ni_syscall /* 195 - 32bit only stat64 */
.llong .sys_ni_syscall /* 32bit only lstat64 */
.llong .sys_ni_syscall /* 32bit only fstat64 */
.llong .sys_ni_syscall /* 32bit only pciconfig_read */
.llong .sys_ni_syscall /* 32bit only pciconfig_write */
.llong .sys_ni_syscall /* 32bit only pciconfig_iobase */
.llong .sys_ni_syscall /* reserved for MacOnLinux */
.llong .sys_getdents64
.llong .sys_pivot_root
.llong .sys_ni_syscall /* 32bit only fcntl64 */
.llong .sys_madvise /* 205 */
.llong .sys_mincore
.llong .sys_gettid
.llong .sys_tkill
.llong .sys_setxattr
.llong .sys_lsetxattr /* 210 */
.llong .sys_fsetxattr
.llong .sys_getxattr
.llong .sys_lgetxattr
.llong .sys_fgetxattr
.llong .sys_listxattr /* 215 */
.llong .sys_llistxattr
.llong .sys_flistxattr
.llong .sys_removexattr
.llong .sys_lremovexattr
.llong .sys_fremovexattr /* 220 */
.llong .sys_futex
.llong .sys_sched_setaffinity
.llong .sys_sched_getaffinity
.llong .sys_ni_syscall
.llong .sys_ni_syscall /* 225 - reserved for tux */
.llong .sys_ni_syscall /* 32bit only sendfile64 */
.llong .sys_io_setup
.llong .sys_io_destroy
.llong .sys_io_getevents
.llong .sys_io_submit /* 230 */
.llong .sys_io_cancel
.llong .sys_set_tid_address
.llong .sys_fadvise64
.llong .sys_exit_group
.llong .sys_lookup_dcookie /* 235 */
.llong .sys_epoll_create
.llong .sys_epoll_ctl
.llong .sys_epoll_wait
.llong .sys_remap_file_pages
.llong .sys_timer_create /* 240 */
.llong .sys_timer_settime
.llong .sys_timer_gettime
.llong .sys_timer_getoverrun
.llong .sys_timer_delete
.llong .sys_clock_settime /* 245 */
.llong .sys_clock_gettime
.llong .sys_clock_getres
.llong .sys_clock_nanosleep
.llong .ppc64_swapcontext
.llong .sys_tgkill /* 250 */
.llong .sys_utimes
.llong .sys_statfs64
.llong .sys_fstatfs64
.llong .sys_ni_syscall /* 32bit only fadvise64_64 */
.llong .ppc_rtas /* 255 */
.llong .sys_ni_syscall /* 256 reserved for sys_debug_setcontext */
.llong .sys_ni_syscall /* 257 reserved for vserver */
.llong .sys_ni_syscall /* 258 reserved for new sys_remap_file_pages */
.llong .sys_mbind
.llong .sys_get_mempolicy /* 260 */
.llong .sys_set_mempolicy
.llong .sys_mq_open
.llong .sys_mq_unlink
.llong .sys_mq_timedsend
.llong .sys_mq_timedreceive /* 265 */
.llong .sys_mq_notify
.llong .sys_mq_getsetattr
[PATCH] ppc64: kexec support for ppc64 This patch implements the kexec support for ppc64 platforms. A couple of notes: 1) We copy the pages in virtual mode, using the full base kernel and a statically allocated stack. At kexec_prepare time we scan the pages and if any overlap our (0, _end[]) range we return -ETXTBSY. On PowerPC 64 systems running in LPAR (logical partitioning) mode, only a small region of memory, referred to as the RMO, can be accessed in real mode. Since Linux runs with only one zone of memory in the memory allocator, and it can be orders of magnitude more memory than the RMO, looping until we allocate pages in the source region is not feasible. Copying in virtual means we don't have to write a hash table generation and call hypervisor to insert translations, instead we rely on the pinned kernel linear mapping. The kernel already has move to linked location built in, so there is no requirement to load it at 0. If we want to load something other than a kernel, then a stub can be written to copy a linear chunk in real mode. 2) The start entry point gets passed parameters from the kernel. Slaves are started at a fixed address after copying code from the entry point. All CPUs get passed their firmware assigned physical id in r3 (most calling conventions use this register for the first argument). This is used to distinguish each CPU from all other CPUs. Since firmware is not around, there is no other way to obtain this information other than to pass it somewhere. A single CPU, referred to here as the master and the one executing the kexec call, branches to start with the address of start in r4. While this can be calculated, we have to load it through a gpr to branch to this point so defining the register this is contained in is free. A stack of unspecified size is available at r1 (also common calling convention). All remaining running CPUs are sent to start at absolute address 0x60 after copying the first 0x100 bytes from start to address 0. This convention was chosen because it matches what the kernel has been doing itself. (only gpr3 is defined). Note: This is not quite the convention of the kexec bootblock v2 in the kernel. A stub has been written to convert between them, and we may adjust the kernel in the future to allow this directly without any stub. 3) Destination pages can be placed anywhere, even where they would not be accessible in real mode. This will allow us to place ram disks above the RMO if we choose. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: R Sharada <sharada@in.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 21:58:10 +00:00
.llong .sys_kexec_load
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!
2005-04-16 22:20:36 +00:00
.llong .sys_add_key
.llong .sys_request_key /* 270 */
.llong .sys_keyctl
.llong .sys_waitid
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