diff options
Diffstat (limited to 'arch/ia64/hp/sim/boot/boot_head.S')
| -rw-r--r-- | arch/ia64/hp/sim/boot/boot_head.S | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/arch/ia64/hp/sim/boot/boot_head.S b/arch/ia64/hp/sim/boot/boot_head.S new file mode 100644 index 000000000..880856549 --- /dev/null +++ b/arch/ia64/hp/sim/boot/boot_head.S @@ -0,0 +1,164 @@ +/* + * 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) |