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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 1998-2003 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
*/
#include <asm/asmmacro.h>
#include <asm/pal.h>
.bss
.align 16
stack_mem:
.skip 16834
.text
/* This needs to be defined because lib/string.c:strlcat() calls it in case of error... */
GLOBAL_ENTRY(printk)
break 0
END(printk)
GLOBAL_ENTRY(_start)
.prologue
.save rp, r0
.body
movl gp = __gp
movl sp = stack_mem+16384-16
bsw.1
br.call.sptk.many rp=start_bootloader
0: nop 0 /* dummy nop to make unwinding work */
END(_start)
/*
* Set a break point on this function so that symbols are available to set breakpoints in
* the kernel being debugged.
*/
GLOBAL_ENTRY(debug_break)
br.ret.sptk.many b0
END(debug_break)
GLOBAL_ENTRY(ssc)
.regstk 5,0,0,0
mov r15=in4
break 0x80001
br.ret.sptk.many b0
END(ssc)
GLOBAL_ENTRY(jmp_to_kernel)
.regstk 2,0,0,0
mov r28=in0
mov b7=in1
br.sptk.few b7
END(jmp_to_kernel)
/*
* r28 contains the index of the PAL function
* r29--31 the args
* Return values in ret0--3 (r8--11)
*/
GLOBAL_ENTRY(pal_emulator_static)
mov r8=-1
mov r9=256
;;
cmp.gtu p6,p7=r9,r28 /* r28 <= 255? */
(p6) br.cond.sptk.few static
;;
mov r9=512
;;
cmp.gtu p6,p7=r9,r28
(p6) br.cond.sptk.few stacked
;;
static: cmp.eq p6,p7=PAL_PTCE_INFO,r28
(p7) br.cond.sptk.few 1f
;;
mov r8=0 /* status = 0 */
movl r9=0x100000000 /* tc.base */
movl r10=0x0000000200000003 /* count[0], count[1] */
movl r11=0x1000000000002000 /* stride[0], stride[1] */
br.cond.sptk.few rp
1: cmp.eq p6,p7=PAL_FREQ_RATIOS,r28
(p7) br.cond.sptk.few 1f
mov r8=0 /* status = 0 */
movl r9 =0x100000064 /* proc_ratio (1/100) */
movl r10=0x100000100 /* bus_ratio<<32 (1/256) */
movl r11=0x100000064 /* itc_ratio<<32 (1/100) */
;;
1: cmp.eq p6,p7=PAL_RSE_INFO,r28
(p7) br.cond.sptk.few 1f
mov r8=0 /* status = 0 */
mov r9=96 /* num phys stacked */
mov r10=0 /* hints */
mov r11=0
br.cond.sptk.few rp
1: cmp.eq p6,p7=PAL_CACHE_FLUSH,r28 /* PAL_CACHE_FLUSH */
(p7) br.cond.sptk.few 1f
mov r9=ar.lc
movl r8=524288 /* flush 512k million cache lines (16MB) */
;;
mov ar.lc=r8
movl r8=0xe000000000000000
;;
.loop: fc r8
add r8=32,r8
br.cloop.sptk.few .loop
sync.i
;;
srlz.i
;;
mov ar.lc=r9
mov r8=r0
;;
1: cmp.eq p6,p7=PAL_PERF_MON_INFO,r28
(p7) br.cond.sptk.few 1f
mov r8=0 /* status = 0 */
movl r9 =0x08122f04 /* generic=4 width=47 retired=8 cycles=18 */
mov r10=0 /* reserved */
mov r11=0 /* reserved */
mov r16=0xffff /* implemented PMC */
mov r17=0x3ffff /* implemented PMD */
add r18=8,r29 /* second index */
;;
st8 [r29]=r16,16 /* store implemented PMC */
st8 [r18]=r0,16 /* clear remaining bits */
;;
st8 [r29]=r0,16 /* clear remaining bits */
st8 [r18]=r0,16 /* clear remaining bits */
;;
st8 [r29]=r17,16 /* store implemented PMD */
st8 [r18]=r0,16 /* clear remaining bits */
mov r16=0xf0 /* cycles count capable PMC */
;;
st8 [r29]=r0,16 /* clear remaining bits */
st8 [r18]=r0,16 /* clear remaining bits */
mov r17=0xf0 /* retired bundles capable PMC */
;;
st8 [r29]=r16,16 /* store cycles capable */
st8 [r18]=r0,16 /* clear remaining bits */
;;
st8 [r29]=r0,16 /* clear remaining bits */
st8 [r18]=r0,16 /* clear remaining bits */
;;
st8 [r29]=r17,16 /* store retired bundle capable */
st8 [r18]=r0,16 /* clear remaining bits */
;;
st8 [r29]=r0,16 /* clear remaining bits */
st8 [r18]=r0,16 /* clear remaining bits */
;;
1: cmp.eq p6,p7=PAL_VM_SUMMARY,r28
(p7) br.cond.sptk.few 1f
mov r8=0 /* status = 0 */
movl r9=0x2044040020F1865 /* num_tc_levels=2, num_unique_tcs=4 */
/* max_itr_entry=64, max_dtr_entry=64 */
/* hash_tag_id=2, max_pkr=15 */
/* key_size=24, phys_add_size=50, vw=1 */
movl r10=0x183C /* rid_size=24, impl_va_msb=60 */
;;
1: cmp.eq p6,p7=PAL_MEM_ATTRIB,r28
(p7) br.cond.sptk.few 1f
mov r8=0 /* status = 0 */
mov r9=0x80|0x01 /* NatPage|WB */
;;
1: br.cond.sptk.few rp
stacked:
br.ret.sptk.few rp
END(pal_emulator_static)
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