projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | /* |
| 3 | * Copyright (C) 1998-2003 Hewlett-Packard Co | |
| 4 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
| 5 | */ | |
| 6 | ||
| 7 | #include <asm/asmmacro.h> | |
| dc90e95f | 8 | #include <asm/pal.h> |
| 1da177e4 LT |
9 | |
| 10 | .bss | |
| 11 | .align 16 | |
| 12 | stack_mem: | |
| 13 | .skip 16834 | |
| 14 | ||
| 15 | .text | |
| 16 | ||
| 17 | /* This needs to be defined because lib/string.c:strlcat() calls it in case of error... */ | |
| 18 | GLOBAL_ENTRY(printk) | |
| 19 | break 0 | |
| 20 | END(printk) | |
| 21 | ||
| 22 | GLOBAL_ENTRY(_start) | |
| 23 | .prologue | |
| 24 | .save rp, r0 | |
| 25 | .body | |
| 26 | movl gp = __gp | |
| a4cce104 | 27 | movl sp = stack_mem+16384-16 |
| 1da177e4 LT |
28 | bsw.1 |
| 29 | br.call.sptk.many rp=start_bootloader | |
| 5d36aa9b | 30 | 0: nop 0 /* dummy nop to make unwinding work */ |
| 1da177e4 LT |
31 | END(_start) |
| 32 | ||
| 33 | /* | |
| 34 | * Set a break point on this function so that symbols are available to set breakpoints in | |
| 35 | * the kernel being debugged. | |
| 36 | */ | |
| 37 | GLOBAL_ENTRY(debug_break) | |
| 38 | br.ret.sptk.many b0 | |
| 39 | END(debug_break) | |
| 40 | ||
| 41 | GLOBAL_ENTRY(ssc) | |
| 42 | .regstk 5,0,0,0 | |
| 43 | mov r15=in4 | |
| 44 | break 0x80001 | |
| 45 | br.ret.sptk.many b0 | |
| 46 | END(ssc) | |
| 47 | ||
| 48 | GLOBAL_ENTRY(jmp_to_kernel) | |
| 49 | .regstk 2,0,0,0 | |
| 50 | mov r28=in0 | |
| 51 | mov b7=in1 | |
| 52 | br.sptk.few b7 | |
| 53 | END(jmp_to_kernel) | |
| 54 | ||
| dc90e95f PC |
55 | /* |
| 56 | * r28 contains the index of the PAL function | |
| 57 | * r29--31 the args | |
| 58 | * Return values in ret0--3 (r8--11) | |
| 59 | */ | |
| 1da177e4 LT |
60 | GLOBAL_ENTRY(pal_emulator_static) |
| 61 | mov r8=-1 | |
| 62 | mov r9=256 | |
| 63 | ;; | |
| 64 | cmp.gtu p6,p7=r9,r28 /* r28 <= 255? */ | |
| 65 | (p6) br.cond.sptk.few static | |
| 66 | ;; | |
| 67 | mov r9=512 | |
| 68 | ;; | |
| 69 | cmp.gtu p6,p7=r9,r28 | |
| 70 | (p6) br.cond.sptk.few stacked | |
| 71 | ;; | |
| dc90e95f | 72 | static: cmp.eq p6,p7=PAL_PTCE_INFO,r28 |
| 1da177e4 LT |
73 | (p7) br.cond.sptk.few 1f |
| 74 | ;; | |
| 75 | mov r8=0 /* status = 0 */ | |
| 76 | movl r9=0x100000000 /* tc.base */ | |
| 77 | movl r10=0x0000000200000003 /* count[0], count[1] */ | |
| 78 | movl r11=0x1000000000002000 /* stride[0], stride[1] */ | |
| 79 | br.cond.sptk.few rp | |
| dc90e95f | 80 | 1: cmp.eq p6,p7=PAL_FREQ_RATIOS,r28 |
| 1da177e4 LT |
81 | (p7) br.cond.sptk.few 1f |
| 82 | mov r8=0 /* status = 0 */ | |
| 83 | movl r9 =0x100000064 /* proc_ratio (1/100) */ | |
| 84 | movl r10=0x100000100 /* bus_ratio<<32 (1/256) */ | |
| 85 | movl r11=0x100000064 /* itc_ratio<<32 (1/100) */ | |
| 86 | ;; | |
| dc90e95f | 87 | 1: cmp.eq p6,p7=PAL_RSE_INFO,r28 |
| 1da177e4 LT |
88 | (p7) br.cond.sptk.few 1f |
| 89 | mov r8=0 /* status = 0 */ | |
| 90 | mov r9=96 /* num phys stacked */ | |
| 91 | mov r10=0 /* hints */ | |
| 92 | mov r11=0 | |
| 93 | br.cond.sptk.few rp | |
| dc90e95f | 94 | 1: cmp.eq p6,p7=PAL_CACHE_FLUSH,r28 /* PAL_CACHE_FLUSH */ |
| 1da177e4 LT |
95 | (p7) br.cond.sptk.few 1f |
| 96 | mov r9=ar.lc | |
| 97 | movl r8=524288 /* flush 512k million cache lines (16MB) */ | |
| 98 | ;; | |
| 99 | mov ar.lc=r8 | |
| 100 | movl r8=0xe000000000000000 | |
| 101 | ;; | |
| 102 | .loop: fc r8 | |
| 103 | add r8=32,r8 | |
| 104 | br.cloop.sptk.few .loop | |
| 105 | sync.i | |
| 106 | ;; | |
| 107 | srlz.i | |
| 108 | ;; | |
| 109 | mov ar.lc=r9 | |
| 110 | mov r8=r0 | |
| 111 | ;; | |
| dc90e95f | 112 | 1: cmp.eq p6,p7=PAL_PERF_MON_INFO,r28 |
| 1da177e4 LT |
113 | (p7) br.cond.sptk.few 1f |
| 114 | mov r8=0 /* status = 0 */ | |
| 115 | movl r9 =0x08122f04 /* generic=4 width=47 retired=8 cycles=18 */ | |
| 116 | mov r10=0 /* reserved */ | |
| 117 | mov r11=0 /* reserved */ | |
| 118 | mov r16=0xffff /* implemented PMC */ | |
| 119 | mov r17=0x3ffff /* implemented PMD */ | |
| 120 | add r18=8,r29 /* second index */ | |
| 121 | ;; | |
| 122 | st8 [r29]=r16,16 /* store implemented PMC */ | |
| 123 | st8 [r18]=r0,16 /* clear remaining bits */ | |
| 124 | ;; | |
| 125 | st8 [r29]=r0,16 /* clear remaining bits */ | |
| 126 | st8 [r18]=r0,16 /* clear remaining bits */ | |
| 127 | ;; | |
| 128 | st8 [r29]=r17,16 /* store implemented PMD */ | |
| 129 | st8 [r18]=r0,16 /* clear remaining bits */ | |
| 130 | mov r16=0xf0 /* cycles count capable PMC */ | |
| 131 | ;; | |
| 132 | st8 [r29]=r0,16 /* clear remaining bits */ | |
| 133 | st8 [r18]=r0,16 /* clear remaining bits */ | |
| 134 | mov r17=0xf0 /* retired bundles capable PMC */ | |
| 135 | ;; | |
| 136 | st8 [r29]=r16,16 /* store cycles capable */ | |
| 137 | st8 [r18]=r0,16 /* clear remaining bits */ | |
| 138 | ;; | |
| 139 | st8 [r29]=r0,16 /* clear remaining bits */ | |
| 140 | st8 [r18]=r0,16 /* clear remaining bits */ | |
| 141 | ;; | |
| 142 | st8 [r29]=r17,16 /* store retired bundle capable */ | |
| 143 | st8 [r18]=r0,16 /* clear remaining bits */ | |
| 144 | ;; | |
| 145 | st8 [r29]=r0,16 /* clear remaining bits */ | |
| 146 | st8 [r18]=r0,16 /* clear remaining bits */ | |
| 147 | ;; | |
| dc90e95f PC |
148 | 1: cmp.eq p6,p7=PAL_VM_SUMMARY,r28 |
| 149 | (p7) br.cond.sptk.few 1f | |
| 150 | mov r8=0 /* status = 0 */ | |
| 151 | movl r9=0x2044040020F1865 /* num_tc_levels=2, num_unique_tcs=4 */ | |
| 152 | /* max_itr_entry=64, max_dtr_entry=64 */ | |
| 153 | /* hash_tag_id=2, max_pkr=15 */ | |
| 154 | /* key_size=24, phys_add_size=50, vw=1 */ | |
| 155 | movl r10=0x183C /* rid_size=24, impl_va_msb=60 */ | |
| 156 | ;; | |
| 157 | 1: cmp.eq p6,p7=PAL_MEM_ATTRIB,r28 | |
| 158 | (p7) br.cond.sptk.few 1f | |
| 159 | mov r8=0 /* status = 0 */ | |
| 160 | mov r9=0x80|0x01 /* NatPage|WB */ | |
| 161 | ;; | |
| 1da177e4 LT |
162 | 1: br.cond.sptk.few rp |
| 163 | stacked: | |
| 164 | br.ret.sptk.few rp | |
| 165 | END(pal_emulator_static) |