#include <asm/pgtable.h>
#include <asm/vhpt.h>
-#if 0
-// FIXME: there's gotta be a better way...
-// ski and spaski are different... moved to xenmisc.c
-#define RunningOnHpSki(rx,ry,pn) \
- addl rx = 2, r0; \
- addl ry = 3, r0; \
- ;; \
- mov rx = cpuid[rx]; \
- mov ry = cpuid[ry]; \
- ;; \
- cmp.eq pn,p0 = 0, rx; \
- ;; \
- (pn) movl rx = 0x7000004 ; \
- ;; \
- (pn) cmp.ge pn,p0 = ry, rx; \
- ;;
-
-//int platform_is_hp_ski(void)
-GLOBAL_ENTRY(platform_is_hp_ski)
- mov r8 = 0
- RunningOnHpSki(r3,r9,p8)
-(p8) mov r8 = 1
- br.ret.sptk.many b0
-END(platform_is_hp_ski)
-#endif
-
// Change rr7 to the passed value while ensuring
// Xen is mapped into the new region.
-// in0: new rr7 value
-// in1: Xen virtual address of shared info (to be pinned)
#define PSR_BITS_TO_CLEAR \
(IA64_PSR_I | IA64_PSR_IT | IA64_PSR_DT | IA64_PSR_RT | \
IA64_PSR_DD | IA64_PSR_SS | IA64_PSR_RI | IA64_PSR_ED | \
- IA64_PSR_DFL | IA64_PSR_DFH)
+ IA64_PSR_DFL | IA64_PSR_DFH | IA64_PSR_IC)
// FIXME? Note that this turns off the DB bit (debug)
#define PSR_BITS_TO_SET IA64_PSR_BN
-//extern void ia64_new_rr7(unsigned long rid,void *shared_info, void *shared_arch_info, unsigned long p_vhpt, unsigned long v_pal);
+//extern void ia64_new_rr7(unsigned long rid, /* in0 */
+// void *shared_info, /* in1 */
+// void *shared_arch_info, /* in2 */
+// unsigned long shared_info_va, /* in3 */
+// unsigned long p_vhpt) /* in4 */
+//Local usage:
+// loc0=rp, loc1=ar.pfs, loc2=percpu_paddr, loc3=psr, loc4=ar.rse
+// loc5=pal_vaddr, loc6=xen_paddr, loc7=shared_archinfo_paddr,
GLOBAL_ENTRY(ia64_new_rr7)
// not sure this unwind statement is correct...
.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(1)
- alloc loc1 = ar.pfs, 5, 9, 0, 0
+ alloc loc1 = ar.pfs, 5, 8, 0, 0
+ movl loc2=PERCPU_ADDR
1: {
- mov r28 = in0 // copy procedure index
- mov r8 = ip // save ip to compute branch
+ mov loc3 = psr // save psr
mov loc0 = rp // save rp
+ mov r8 = ip // save ip to compute branch
};;
.body
- movl loc2=PERCPU_ADDR
- ;;
tpa loc2=loc2 // grab this BEFORE changing rr7
+ tpa in1=in1 // grab shared_info BEFORE changing rr7
+ adds r8 = 1f-1b,r8 // calculate return address for call
;;
- dep loc8=0,in4,60,4
- ;;
-#if VHPT_ENABLED
- mov loc6=in3
- ;;
- //tpa loc6=loc6 // grab this BEFORE changing rr7
- ;;
-#endif
- mov loc5=in1
- ;;
- tpa loc5=loc5 // grab this BEFORE changing rr7
- ;;
- mov loc7=in2 // arch_vcpu_info_t
- ;;
- tpa loc7=loc7 // grab this BEFORE changing rr7
- ;;
- mov loc3 = psr // save psr
- adds r8 = 1f-1b,r8 // calculate return address for call
- ;;
- tpa r8=r8 // convert rp to physical
- ;;
+ tpa loc7=in2 // grab arch_vcpu_info BEFORE chg rr7
+ movl r17=PSR_BITS_TO_SET
mov loc4=ar.rsc // save RSE configuration
- ;;
- mov ar.rsc=0 // put RSE in enforced lazy, LE mode
movl r16=PSR_BITS_TO_CLEAR
- movl r17=PSR_BITS_TO_SET
- ;;
+ ;;
+ tpa r8=r8 // convert rp to physical
+ mov ar.rsc=0 // put RSE in enforced lazy, LE mode
or loc3=loc3,r17 // add in psr the bits to set
;;
andcm r16=loc3,r16 // removes bits to clear from psr
+ dep loc6=0,r8,0,KERNEL_TR_PAGE_SHIFT // Xen code paddr
br.call.sptk.many rp=ia64_switch_mode_phys
1:
// now in physical mode with psr.i/ic off so do rr7 switch
- dep r16=-1,r0,61,3
- ;;
+ movl r16=pal_vaddr // Note: belong to region 7!
+ ;;
mov rr[r16]=in0
+ ;;
srlz.d
+ dep r16=0,r16,60,4 // Get physical address.
;;
+ ld8 loc5=[r16] // read pal_vaddr
+ movl r26=PAGE_KERNEL
+ ;;
// re-pin mappings for kernel text and data
- mov r18=KERNEL_TR_PAGE_SHIFT<<2
+ mov r24=KERNEL_TR_PAGE_SHIFT<<2
movl r17=KERNEL_START
;;
- rsm psr.i | psr.ic
- ;;
- srlz.i
- ;;
- ptr.i r17,r18
- ptr.d r17,r18
- ;;
- mov cr.itir=r18
- mov cr.ifa=r17
+ ptr.i r17,r24
+ ptr.d r17,r24
mov r16=IA64_TR_KERNEL
- //mov r3=ip
- movl r18=PAGE_KERNEL
- ;;
- dep r2=0,r3,0,KERNEL_TR_PAGE_SHIFT
- ;;
- or r18=r2,r18
- ;;
- srlz.i
+ mov cr.itir=r24
+ mov cr.ifa=r17
+ or r18=loc6,r26
;;
itr.i itr[r16]=r18
- ;;
+ ;;
itr.d dtr[r16]=r18
- ;;
- // re-pin mappings for stack (current), per-cpu, vhpt, and shared info
+ // re-pin mappings for stack (current)
// unless overlaps with KERNEL_TR
dep r18=0,r13,0,KERNEL_TR_PAGE_SHIFT
;;
cmp.eq p7,p0=r17,r18
(p7) br.cond.sptk .stack_overlaps
- ;;
- movl r25=PAGE_KERNEL
- dep r21=0,r13,60,4 // physical address of "current"
- ;;
- or r23=r25,r21 // construct PA | page properties
mov r25=IA64_GRANULE_SHIFT<<2
+ dep r21=0,r13,60,4 // physical address of "current"
;;
ptr.d r13,r25
- ;;
+ or r23=r21,r26 // construct PA | page properties
mov cr.itir=r25
mov cr.ifa=r13 // VA of next task...
+ mov r21=IA64_TR_CURRENT_STACK
;;
- mov r25=IA64_TR_CURRENT_STACK
- ;;
- itr.d dtr[r25]=r23 // wire in new mapping...
- ;;
-.stack_overlaps:
+ itr.d dtr[r21]=r23 // wire in new mapping...
- movl r22=PERCPU_ADDR
- ;;
- movl r25=PAGE_KERNEL
- ;;
- mov r21=loc2 // saved percpu physical address
- ;;
- or r23=r25,r21 // construct PA | page properties
+ // Per-cpu
+.stack_overlaps:
mov r24=PERCPU_PAGE_SHIFT<<2
+ movl r22=PERCPU_ADDR
;;
ptr.d r22,r24
- ;;
+ or r23=loc2,r26 // construct PA | page properties
mov cr.itir=r24
mov cr.ifa=r22
- ;;
mov r25=IA64_TR_PERCPU_DATA
;;
itr.d dtr[r25]=r23 // wire in new mapping...
- ;;
+ // VHPT
#if VHPT_ENABLED
- movl r22=VHPT_ADDR
- ;;
- movl r25=PAGE_KERNEL
- ;;
- mov r21=loc6 // saved vhpt physical address
- ;;
- or r23=r25,r21 // construct PA | page properties
mov r24=VHPT_SIZE_LOG2<<2
+ movl r22=VHPT_ADDR
+ mov r21=IA64_TR_VHPT
;;
ptr.d r22,r24
- ;;
+ or r23=in4,r26 // construct PA | page properties
mov cr.itir=r24
mov cr.ifa=r22
;;
- mov r25=IA64_TR_VHPT
- ;;
- itr.d dtr[r25]=r23 // wire in new mapping...
- ;;
+ itr.d dtr[r21]=r23 // wire in new mapping...
#endif
- movl r22=SHAREDINFO_ADDR
- ;;
- movl r25=__pgprot(__DIRTY_BITS | _PAGE_PL_2 | _PAGE_AR_RW)
- ;;
- mov r21=loc5 // saved sharedinfo physical address
- ;;
- or r23=r25,r21 // construct PA | page properties
+ // Shared info
mov r24=PAGE_SHIFT<<2
+ movl r25=__pgprot(__DIRTY_BITS | _PAGE_PL_2 | _PAGE_AR_RW)
;;
- ptr.d r22,r24
- ;;
+ ptr.d in3,r24
+ or r23=in1,r25 // construct PA | page properties
mov cr.itir=r24
- mov cr.ifa=r22
- ;;
- mov r25=IA64_TR_SHARED_INFO
- ;;
- itr.d dtr[r25]=r23 // wire in new mapping...
+ mov cr.ifa=in3
+ mov r21=IA64_TR_SHARED_INFO
;;
+ itr.d dtr[r21]=r23 // wire in new mapping...
+
// Map for arch_vcpu_info_t
- movl r22=SHARED_ARCHINFO_ADDR
- ;;
- movl r25=__pgprot(__DIRTY_BITS | _PAGE_PL_2 | _PAGE_AR_RW)
- ;;
- mov r21=loc7 // saved sharedinfo physical address
- ;;
- or r23=r25,r21 // construct PA | page properties
+ movl r22=XSI_OFS
mov r24=PAGE_SHIFT<<2
+ ;;
+ add r22=r22,in3
;;
ptr.d r22,r24
- ;;
+ or r23=loc7,r25 // construct PA | page properties
mov cr.itir=r24
mov cr.ifa=r22
+ mov r21=IA64_TR_ARCH_INFO
;;
- mov r25=IA64_TR_ARCH_INFO
- ;;
- itr.d dtr[r25]=r23 // wire in new mapping...
- ;;
+ itr.d dtr[r21]=r23 // wire in new mapping...
- //Purge/insert PAL TR
+ // Purge/insert PAL TR
mov r24=IA64_TR_PALCODE
- movl r25=PAGE_KERNEL
- ;;
- or loc8=r25,loc8
mov r23=IA64_GRANULE_SHIFT<<2
+ dep r25=0,loc5,60,4 // convert pal vaddr to paddr
;;
- ptr.i in4,r23
- ;;
+ ptr.i loc5,r23
+ or r25=r25,r26 // construct PA | page properties
mov cr.itir=r23
- mov cr.ifa=in4
- ;;
- itr.i itr[r24]=loc8
+ mov cr.ifa=loc5
;;
+ itr.i itr[r24]=r25
// done, switch back to virtual and return
mov r16=loc3 // r16= original psr
br.ret.sptk.many rp
END(ia64_new_rr7)
+#if 0 /* Not used */
#include "minstate.h"
GLOBAL_ENTRY(ia64_prepare_handle_privop)
DO_LOAD_SWITCH_STACK
br.cond.sptk.many rp // goes to ia64_leave_kernel
END(ia64_prepare_handle_reflection)
+#endif
GLOBAL_ENTRY(__get_domain_bundle)
EX(.failure_in_get_bundle,ld8 r8=[r32],8)
mov cr.ipsr=r17
mov cr.ifs=r18
;;
- // fall through
-END(dorfirfi)
-
-GLOBAL_ENTRY(dorfi)
rfi
;;
-END(dorfi)
-
-//
-// Long's Peak UART Offsets
-//
-#define COM_TOP 0xff5e0000
-#define COM_BOT 0xff5e2000
-
-// UART offsets
-#define UART_TX 0 /* Out: Transmit buffer (DLAB=0) */
-#define UART_INT_ENB 1 /* interrupt enable (DLAB=0) */
-#define UART_INT_ID 2 /* Interrupt ID register */
-#define UART_LINE_CTL 3 /* Line control register */
-#define UART_MODEM_CTL 4 /* Modem Control Register */
-#define UART_LSR 5 /* In: Line Status Register */
-#define UART_MSR 6 /* Modem status register */
-#define UART_DLATCH_LOW UART_TX
-#define UART_DLATCH_HIGH UART_INT_ENB
-#define COM1 0x3f8
-#define COM2 0x2F8
-#define COM3 0x3E8
-
-/* interrupt enable bits (offset 1) */
-#define DATA_AVAIL_INT 1
-#define XMIT_HOLD_EMPTY_INT 2
-#define LINE_STAT_INT 4
-#define MODEM_STAT_INT 8
-
-/* line status bits (offset 5) */
-#define REC_DATA_READY 1
-#define OVERRUN 2
-#define PARITY_ERROR 4
-#define FRAMING_ERROR 8
-#define BREAK_INTERRUPT 0x10
-#define XMIT_HOLD_EMPTY 0x20
-#define XMIT_SHIFT_EMPTY 0x40
-
-// Write a single character
-// input: r32 = character to be written
-// output: none
-GLOBAL_ENTRY(longs_peak_putc)
- rsm psr.dt
- movl r16 = 0x8000000000000000 + COM_TOP + UART_LSR
- ;;
- srlz.i
- ;;
-
-.Chk_THRE_p:
- ld1.acq r18=[r16]
- ;;
-
- and r18 = XMIT_HOLD_EMPTY, r18
- ;;
- cmp4.eq p6,p0=0,r18
- ;;
-
-(p6) br .Chk_THRE_p
- ;;
- movl r16 = 0x8000000000000000 + COM_TOP + UART_TX
- ;;
- st1.rel [r16]=r32
- ;;
- ssm psr.dt
- ;;
- srlz.i
- ;;
- br.ret.sptk.many b0
-END(longs_peak_putc)
+END(dorfirfi)
/* derived from linux/arch/ia64/hp/sim/boot/boot_head.S */
GLOBAL_ENTRY(pal_emulator_static)
projects / xen.git / commitdiff