Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Heiko Carstens | a53c8fa | 2012-07-20 11:15:04 +0200 | [diff] [blame] | 2 | * Copyright IBM Corp. 1999, 2010 |
Heiko Carstens | 0ad775d | 2005-11-07 00:59:12 -0800 | [diff] [blame] | 3 | * |
| 4 | * Author(s): Hartmut Penner <hp@de.ibm.com> |
| 5 | * Martin Schwidefsky <schwidefsky@de.ibm.com> |
| 6 | * Rob van der Heij <rvdhei@iae.nl> |
| 7 | * Heiko Carstens <heiko.carstens@de.ibm.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * |
| 9 | * There are 5 different IPL methods |
| 10 | * 1) load the image directly into ram at address 0 and do an PSW restart |
| 11 | * 2) linload will load the image from address 0x10000 to memory 0x10000 |
| 12 | * and start the code thru LPSW 0x0008000080010000 (VM only, deprecated) |
| 13 | * 3) generate the tape ipl header, store the generated image on a tape |
| 14 | * and ipl from it |
| 15 | * In case of SL tape you need to IPL 5 times to get past VOL1 etc |
| 16 | * 4) generate the vm reader ipl header, move the generated image to the |
| 17 | * VM reader (use option NOH!) and do a ipl from reader (VM only) |
| 18 | * 5) direct call of start by the SALIPL loader |
| 19 | * We use the cpuid to distinguish between VM and native ipl |
| 20 | * params for kernel are pushed to 0x10400 (see setup.h) |
Heiko Carstens | 0ad775d | 2005-11-07 00:59:12 -0800 | [diff] [blame] | 21 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | */ |
| 23 | |
Tim Abbott | 2133bb8 | 2009-04-25 22:11:06 -0400 | [diff] [blame] | 24 | #include <linux/init.h> |
Jan Glauber | 144d634 | 2011-07-24 10:48:19 +0200 | [diff] [blame] | 25 | #include <linux/linkage.h> |
Sam Ravnborg | 0013a85 | 2005-09-09 20:57:26 +0200 | [diff] [blame] | 26 | #include <asm/asm-offsets.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <asm/thread_info.h> |
| 28 | #include <asm/page.h> |
| 29 | |
Martin Schwidefsky | 347a8dc | 2006-01-06 00:19:28 -0800 | [diff] [blame] | 30 | #ifdef CONFIG_64BIT |
Heiko Carstens | 0ad775d | 2005-11-07 00:59:12 -0800 | [diff] [blame] | 31 | #define ARCH_OFFSET 4 |
| 32 | #else |
| 33 | #define ARCH_OFFSET 0 |
| 34 | #endif |
| 35 | |
Tim Abbott | 2133bb8 | 2009-04-25 22:11:06 -0400 | [diff] [blame] | 36 | __HEAD |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 38 | #define IPL_BS 0x730 |
| 39 | .org 0 |
| 40 | .long 0x00080000,0x80000000+iplstart # The first 24 bytes are loaded |
| 41 | .long 0x02000018,0x60000050 # by ipl to addresses 0-23. |
| 42 | .long 0x02000068,0x60000050 # (a PSW and two CCWs). |
| 43 | .fill 80-24,1,0x40 # bytes 24-79 are discarded !! |
| 44 | .long 0x020000f0,0x60000050 # The next 160 byte are loaded |
| 45 | .long 0x02000140,0x60000050 # to addresses 0x18-0xb7 |
| 46 | .long 0x02000190,0x60000050 # They form the continuation |
| 47 | .long 0x020001e0,0x60000050 # of the CCW program started |
| 48 | .long 0x02000230,0x60000050 # by ipl and load the range |
| 49 | .long 0x02000280,0x60000050 # 0x0f0-0x730 from the image |
| 50 | .long 0x020002d0,0x60000050 # to the range 0x0f0-0x730 |
| 51 | .long 0x02000320,0x60000050 # in memory. At the end of |
| 52 | .long 0x02000370,0x60000050 # the channel program the PSW |
| 53 | .long 0x020003c0,0x60000050 # at location 0 is loaded. |
| 54 | .long 0x02000410,0x60000050 # Initial processing starts |
| 55 | .long 0x02000460,0x60000050 # at 0xf0 = iplstart. |
| 56 | .long 0x020004b0,0x60000050 |
| 57 | .long 0x02000500,0x60000050 |
| 58 | .long 0x02000550,0x60000050 |
| 59 | .long 0x020005a0,0x60000050 |
| 60 | .long 0x020005f0,0x60000050 |
| 61 | .long 0x02000640,0x60000050 |
| 62 | .long 0x02000690,0x60000050 |
| 63 | .long 0x020006e0,0x20000050 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 65 | .org 0xf0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | # |
| 67 | # subroutine for loading cards from the reader |
| 68 | # |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 69 | .Lloader: |
| 70 | la %r3,.Lorb # r2 = address of orb into r2 |
| 71 | la %r5,.Lirb # r4 = address of irb |
| 72 | la %r6,.Lccws |
| 73 | la %r7,20 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | .Linit: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 75 | st %r2,4(%r6) # initialize CCW data addresses |
| 76 | la %r2,0x50(%r2) |
| 77 | la %r6,8(%r6) |
| 78 | bct 7,.Linit |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 80 | lctl %c6,%c6,.Lcr6 # set IO subclass mask |
| 81 | slr %r2,%r2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | .Lldlp: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 83 | ssch 0(%r3) # load chunk of 1600 bytes |
| 84 | bnz .Llderr |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | .Lwait4irq: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 86 | mvc 0x78(8),.Lnewpsw # set up IO interrupt psw |
| 87 | lpsw .Lwaitpsw |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | .Lioint: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 89 | c %r1,0xb8 # compare subchannel number |
| 90 | bne .Lwait4irq |
| 91 | tsch 0(%r5) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 93 | slr %r0,%r0 |
| 94 | ic %r0,8(%r5) # get device status |
| 95 | chi %r0,8 # channel end ? |
| 96 | be .Lcont |
| 97 | chi %r0,12 # channel end + device end ? |
| 98 | be .Lcont |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 100 | l %r0,4(%r5) |
| 101 | s %r0,8(%r3) # r0/8 = number of ccws executed |
| 102 | mhi %r0,10 # *10 = number of bytes in ccws |
| 103 | lh %r3,10(%r5) # get residual count |
| 104 | sr %r0,%r3 # #ccws*80-residual=#bytes read |
| 105 | ar %r2,%r0 |
| 106 | |
| 107 | br %r14 # r2 contains the total size |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
| 109 | .Lcont: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 110 | ahi %r2,0x640 # add 0x640 to total size |
| 111 | la %r6,.Lccws |
| 112 | la %r7,20 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | .Lincr: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 114 | l %r0,4(%r6) # update CCW data addresses |
| 115 | ahi %r0,0x640 |
| 116 | st %r0,4(%r6) |
| 117 | ahi %r6,8 |
| 118 | bct 7,.Lincr |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 120 | b .Lldlp |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | .Llderr: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 122 | lpsw .Lcrash |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 124 | .align 8 |
| 125 | .Lorb: .long 0x00000000,0x0080ff00,.Lccws |
| 126 | .Lirb: .long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 |
| 127 | .Lcr6: .long 0xff000000 |
| 128 | .Lloadp:.long 0,0 |
| 129 | .align 8 |
| 130 | .Lcrash:.long 0x000a0000,0x00000000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | .Lnewpsw: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 132 | .long 0x00080000,0x80000000+.Lioint |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | .Lwaitpsw: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 134 | .long 0x020a0000,0x80000000+.Lioint |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 136 | .align 8 |
| 137 | .Lccws: .rept 19 |
| 138 | .long 0x02600050,0x00000000 |
| 139 | .endr |
| 140 | .long 0x02200050,0x00000000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
| 142 | iplstart: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 143 | lh %r1,0xb8 # test if subchannel number |
| 144 | bct %r1,.Lnoload # is valid |
| 145 | l %r1,0xb8 # load ipl subchannel number |
| 146 | la %r2,IPL_BS # load start address |
| 147 | bas %r14,.Lloader # load rest of ipl image |
| 148 | l %r12,.Lparm # pointer to parameter area |
| 149 | st %r1,IPL_DEVICE+ARCH_OFFSET-PARMAREA(%r12) # save ipl device number |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | # |
| 152 | # load parameter file from ipl device |
| 153 | # |
| 154 | .Lagain1: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 155 | l %r2,.Linitrd # ramdisk loc. is temp |
| 156 | bas %r14,.Lloader # load parameter file |
| 157 | ltr %r2,%r2 # got anything ? |
| 158 | bz .Lnopf |
| 159 | chi %r2,895 |
| 160 | bnh .Lnotrunc |
| 161 | la %r2,895 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | .Lnotrunc: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 163 | l %r4,.Linitrd |
| 164 | clc 0(3,%r4),.L_hdr # if it is HDRx |
| 165 | bz .Lagain1 # skip dataset header |
| 166 | clc 0(3,%r4),.L_eof # if it is EOFx |
| 167 | bz .Lagain1 # skip dateset trailer |
| 168 | la %r5,0(%r4,%r2) |
| 169 | lr %r3,%r2 |
Martin Schwidefsky | 61fd330 | 2010-02-26 22:37:51 +0100 | [diff] [blame] | 170 | la %r3,COMMAND_LINE-PARMAREA(%r12) # load adr. of command line |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 171 | mvc 0(256,%r3),0(%r4) |
| 172 | mvc 256(256,%r3),256(%r4) |
| 173 | mvc 512(256,%r3),512(%r4) |
| 174 | mvc 768(122,%r3),768(%r4) |
| 175 | slr %r0,%r0 |
| 176 | b .Lcntlp |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | .Ldelspc: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 178 | ic %r0,0(%r2,%r3) |
| 179 | chi %r0,0x20 # is it a space ? |
| 180 | be .Lcntlp |
| 181 | ahi %r2,1 |
| 182 | b .Leolp |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | .Lcntlp: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 184 | brct %r2,.Ldelspc |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | .Leolp: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 186 | slr %r0,%r0 |
| 187 | stc %r0,0(%r2,%r3) # terminate buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | .Lnopf: |
| 189 | |
| 190 | # |
| 191 | # load ramdisk from ipl device |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 192 | # |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | .Lagain2: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 194 | l %r2,.Linitrd # addr of ramdisk |
| 195 | st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) |
| 196 | bas %r14,.Lloader # load ramdisk |
| 197 | st %r2,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r12) # store size of rd |
| 198 | ltr %r2,%r2 |
| 199 | bnz .Lrdcont |
| 200 | st %r2,INITRD_START+ARCH_OFFSET-PARMAREA(%r12) # no ramdisk found |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | .Lrdcont: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 202 | l %r2,.Linitrd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 204 | clc 0(3,%r2),.L_hdr # skip HDRx and EOFx |
| 205 | bz .Lagain2 |
| 206 | clc 0(3,%r2),.L_eof |
| 207 | bz .Lagain2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | # |
| 210 | # reset files in VM reader |
| 211 | # |
Martin Schwidefsky | c532890 | 2011-12-27 11:27:15 +0100 | [diff] [blame] | 212 | stidp __LC_SAVE_AREA_SYNC # store cpuid |
| 213 | tm __LC_SAVE_AREA_SYNC,0xff# running VM ? |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 214 | bno .Lnoreset |
| 215 | la %r2,.Lreset |
| 216 | lhi %r3,26 |
| 217 | diag %r2,%r3,8 |
| 218 | la %r5,.Lirb |
| 219 | stsch 0(%r5) # check if irq is pending |
| 220 | tm 30(%r5),0x0f # by verifying if any of the |
| 221 | bnz .Lwaitforirq # activity or status control |
| 222 | tm 31(%r5),0xff # bits is set in the schib |
| 223 | bz .Lnoreset |
Heiko Carstens | 350e3ad | 2005-07-29 14:03:36 -0700 | [diff] [blame] | 224 | .Lwaitforirq: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 225 | mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw |
Heiko Carstens | 2b07188 | 2005-06-21 17:16:31 -0700 | [diff] [blame] | 226 | .Lwaitrdrirq: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 227 | lpsw .Lrdrwaitpsw |
Heiko Carstens | 2b07188 | 2005-06-21 17:16:31 -0700 | [diff] [blame] | 228 | .Lrdrint: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 229 | c %r1,0xb8 # compare subchannel number |
| 230 | bne .Lwaitrdrirq |
| 231 | la %r5,.Lirb |
| 232 | tsch 0(%r5) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | .Lnoreset: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 234 | b .Lnoload |
Heiko Carstens | 2b07188 | 2005-06-21 17:16:31 -0700 | [diff] [blame] | 235 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 236 | .align 8 |
Heiko Carstens | 2b07188 | 2005-06-21 17:16:31 -0700 | [diff] [blame] | 237 | .Lrdrnewpsw: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 238 | .long 0x00080000,0x80000000+.Lrdrint |
Heiko Carstens | 2b07188 | 2005-06-21 17:16:31 -0700 | [diff] [blame] | 239 | .Lrdrwaitpsw: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 240 | .long 0x020a0000,0x80000000+.Lrdrint |
Heiko Carstens | 2b07188 | 2005-06-21 17:16:31 -0700 | [diff] [blame] | 241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | # |
| 243 | # everything loaded, go for it |
| 244 | # |
| 245 | .Lnoload: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 246 | l %r1,.Lstartup |
| 247 | br %r1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Heiko Carstens | e033b9a | 2010-08-09 18:12:57 +0200 | [diff] [blame] | 249 | .Linitrd:.long _end # default address of initrd |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | .Lparm: .long PARMAREA |
| 251 | .Lstartup: .long startup |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 252 | .Lreset:.byte 0xc3,0xc8,0xc1,0xd5,0xc7,0xc5,0x40,0xd9,0xc4,0xd9,0x40 |
| 253 | .byte 0xc1,0xd3,0xd3,0x40,0xd2,0xc5,0xc5,0xd7,0x40,0xd5,0xd6 |
| 254 | .byte 0xc8,0xd6,0xd3,0xc4 # "change rdr all keep nohold" |
| 255 | .L_eof: .long 0xc5d6c600 /* C'EOF' */ |
| 256 | .L_hdr: .long 0xc8c4d900 /* C'HDR' */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | # |
| 259 | # SALIPL loader support. Based on a patch by Rob van der Heij. |
| 260 | # This entry point is called directly from the SALIPL loader and |
| 261 | # doesn't need a builtin ipl record. |
| 262 | # |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 263 | .org 0x800 |
Jan Glauber | 144d634 | 2011-07-24 10:48:19 +0200 | [diff] [blame] | 264 | ENTRY(start) |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 265 | stm %r0,%r15,0x07b0 # store registers |
| 266 | basr %r12,%r0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | .base: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 268 | l %r11,.parm |
| 269 | l %r8,.cmd # pointer to command buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 271 | ltr %r9,%r9 # do we have SALIPL parameters? |
| 272 | bp .sk8x8 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 274 | mvc 0(64,%r8),0x00b0 # copy saved registers |
| 275 | xc 64(240-64,%r8),0(%r8) # remainder of buffer |
| 276 | tr 0(64,%r8),.lowcase |
| 277 | b .gotr |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | .sk8x8: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 279 | mvc 0(240,%r8),0(%r9) # copy iplparms into buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | .gotr: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 281 | slr %r0,%r0 |
| 282 | st %r0,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r11) |
| 283 | st %r0,INITRD_START+ARCH_OFFSET-PARMAREA(%r11) |
| 284 | j startup # continue with startup |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 285 | .cmd: .long COMMAND_LINE # address of command line buffer |
| 286 | .parm: .long PARMAREA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | .lowcase: |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 288 | .byte 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | .byte 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 290 | .byte 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | .byte 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 292 | .byte 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | .byte 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 294 | .byte 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | .byte 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 296 | .byte 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | .byte 0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 298 | .byte 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | .byte 0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 300 | .byte 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | .byte 0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 302 | .byte 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | .byte 0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f |
| 304 | |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 305 | .byte 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | .byte 0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 307 | .byte 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | .byte 0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 309 | .byte 0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | .byte 0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 311 | .byte 0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | .byte 0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 313 | .byte 0xc0,0x81,0x82,0x83,0x84,0x85,0x86,0x87 # .abcdefg |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | .byte 0x88,0x89,0xca,0xcb,0xcc,0xcd,0xce,0xcf # hi |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 315 | .byte 0xd0,0x91,0x92,0x93,0x94,0x95,0x96,0x97 # .jklmnop |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | .byte 0x98,0x99,0xda,0xdb,0xdc,0xdd,0xde,0xdf # qr |
| 317 | .byte 0xe0,0xe1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7 # ..stuvwx |
| 318 | .byte 0xa8,0xa9,0xea,0xeb,0xec,0xed,0xee,0xef # yz |
Heiko Carstens | 25d83cb | 2006-09-28 16:56:37 +0200 | [diff] [blame] | 319 | .byte 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | .byte 0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff |
| 321 | |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 322 | # |
| 323 | # startup-code at 0x10000, running in absolute addressing mode |
| 324 | # this is called either by the ipl loader or directly by PSW restart |
| 325 | # or linload or SALIPL |
| 326 | # |
| 327 | .org 0x10000 |
Jan Glauber | 144d634 | 2011-07-24 10:48:19 +0200 | [diff] [blame] | 328 | ENTRY(startup) |
Michael Holzheu | 60a0c68 | 2011-10-30 15:16:40 +0100 | [diff] [blame] | 329 | j .Lep_startup_normal |
| 330 | .org 0x10008 |
| 331 | # |
| 332 | # This is a list of s390 kernel entry points. At address 0x1000f the number of |
| 333 | # valid entry points is stored. |
| 334 | # |
| 335 | # IMPORTANT: Do not change this table, it is s390 kernel ABI! |
| 336 | # |
| 337 | .ascii "S390EP" |
| 338 | .byte 0x00,0x01 |
| 339 | # |
| 340 | # kdump startup-code at 0x10010, running in 64 bit absolute addressing mode |
| 341 | # |
| 342 | .org 0x10010 |
| 343 | ENTRY(startup_kdump) |
| 344 | j .Lep_startup_kdump |
| 345 | .Lep_startup_normal: |
Martin Schwidefsky | 1844c9b | 2010-02-26 22:37:53 +0100 | [diff] [blame] | 346 | basr %r13,0 # get base |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 347 | .LPG0: |
Martin Schwidefsky | 866ba28 | 2009-03-26 15:24:44 +0100 | [diff] [blame] | 348 | xc 0x200(256),0x200 # partially clear lowcore |
| 349 | xc 0x300(256),0x300 |
Michael Holzheu | 60a0c68 | 2011-10-30 15:16:40 +0100 | [diff] [blame] | 350 | xc 0xe00(256),0xe00 |
Martin Schwidefsky | 1844c9b | 2010-02-26 22:37:53 +0100 | [diff] [blame] | 351 | stck __LC_LAST_UPDATE_CLOCK |
| 352 | spt 5f-.LPG0(%r13) |
| 353 | mvc __LC_LAST_UPDATE_TIMER(8),5f-.LPG0(%r13) |
Michael Holzheu | 37e37c2 | 2012-04-11 14:28:11 +0200 | [diff] [blame] | 354 | xc __LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 355 | #ifndef CONFIG_MARCH_G5 |
Martin Schwidefsky | 8c4caa4 | 2009-06-12 10:26:23 +0200 | [diff] [blame] | 356 | # check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10} |
Martin Schwidefsky | 8838101 | 2011-04-04 09:43:33 +0200 | [diff] [blame] | 357 | .insn s,0xb2b10000,__LC_STFL_FAC_LIST # store facility list |
Martin Schwidefsky | 8c4caa4 | 2009-06-12 10:26:23 +0200 | [diff] [blame] | 358 | tm __LC_STFL_FAC_LIST,0x01 # stfle available ? |
| 359 | jz 0f |
| 360 | la %r0,0 |
| 361 | .insn s,0xb2b00000,__LC_STFL_FAC_LIST # store facility list extended |
| 362 | 0: l %r0,__LC_STFL_FAC_LIST |
| 363 | n %r0,2f+8-.LPG0(%r13) |
| 364 | cl %r0,2f+8-.LPG0(%r13) |
| 365 | jne 1f |
| 366 | l %r0,__LC_STFL_FAC_LIST+4 |
| 367 | n %r0,2f+12-.LPG0(%r13) |
| 368 | cl %r0,2f+12-.LPG0(%r13) |
| 369 | je 3f |
Heiko Carstens | d90cbd4 | 2009-06-12 10:26:24 +0200 | [diff] [blame] | 370 | 1: l %r15,.Lstack-.LPG0(%r13) |
Heiko Carstens | d90cbd4 | 2009-06-12 10:26:24 +0200 | [diff] [blame] | 371 | ahi %r15,-96 |
| 372 | la %r2,.Lals_string-.LPG0(%r13) |
| 373 | l %r3,.Lsclp_print-.LPG0(%r13) |
| 374 | basr %r14,%r3 |
| 375 | lpsw 2f-.LPG0(%r13) # machine type not good enough, crash |
| 376 | .Lals_string: |
| 377 | .asciz "The Linux kernel requires more recent processor hardware" |
| 378 | .Lsclp_print: |
| 379 | .long _sclp_print_early |
| 380 | .Lstack: |
Martin Schwidefsky | 1844c9b | 2010-02-26 22:37:53 +0100 | [diff] [blame] | 381 | .long 0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER)) |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 382 | .align 16 |
Martin Schwidefsky | 8c4caa4 | 2009-06-12 10:26:23 +0200 | [diff] [blame] | 383 | 2: .long 0x000a0000,0x8badcccc |
| 384 | #if defined(CONFIG_64BIT) |
Heiko Carstens | f861e40 | 2010-10-25 16:10:17 +0200 | [diff] [blame] | 385 | #if defined(CONFIG_MARCH_Z196) |
| 386 | .long 0xc100efe3, 0xf46c0000 |
| 387 | #elif defined(CONFIG_MARCH_Z10) |
Martin Schwidefsky | 8c4caa4 | 2009-06-12 10:26:23 +0200 | [diff] [blame] | 388 | .long 0xc100efe3, 0xf0680000 |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 389 | #elif defined(CONFIG_MARCH_Z9_109) |
Martin Schwidefsky | 8c4caa4 | 2009-06-12 10:26:23 +0200 | [diff] [blame] | 390 | .long 0xc100efc3, 0x00000000 |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 391 | #elif defined(CONFIG_MARCH_Z990) |
Martin Schwidefsky | 8c4caa4 | 2009-06-12 10:26:23 +0200 | [diff] [blame] | 392 | .long 0xc0002000, 0x00000000 |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 393 | #elif defined(CONFIG_MARCH_Z900) |
Martin Schwidefsky | 8c4caa4 | 2009-06-12 10:26:23 +0200 | [diff] [blame] | 394 | .long 0xc0000000, 0x00000000 |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 395 | #endif |
Martin Schwidefsky | 8c4caa4 | 2009-06-12 10:26:23 +0200 | [diff] [blame] | 396 | #else |
Heiko Carstens | f861e40 | 2010-10-25 16:10:17 +0200 | [diff] [blame] | 397 | #if defined(CONFIG_MARCH_Z196) |
| 398 | .long 0x8100c880, 0x00000000 |
| 399 | #elif defined(CONFIG_MARCH_Z10) |
Martin Schwidefsky | 8c4caa4 | 2009-06-12 10:26:23 +0200 | [diff] [blame] | 400 | .long 0x8100c880, 0x00000000 |
| 401 | #elif defined(CONFIG_MARCH_Z9_109) |
| 402 | .long 0x8100c880, 0x00000000 |
| 403 | #elif defined(CONFIG_MARCH_Z990) |
| 404 | .long 0x80002000, 0x00000000 |
| 405 | #elif defined(CONFIG_MARCH_Z900) |
| 406 | .long 0x80000000, 0x00000000 |
| 407 | #endif |
| 408 | #endif |
| 409 | 3: |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 410 | #endif |
| 411 | |
Martin Schwidefsky | 1844c9b | 2010-02-26 22:37:53 +0100 | [diff] [blame] | 412 | #ifdef CONFIG_64BIT |
| 413 | mvi __LC_AR_MODE_ID,1 # set esame flag |
| 414 | slr %r0,%r0 # set cpuid to zero |
| 415 | lhi %r1,2 # mode 2 = esame (dump) |
| 416 | sigp %r1,%r0,0x12 # switch to esame mode |
| 417 | sam64 # switch to 64 bit mode |
Martin Schwidefsky | 06c0dd7 | 2010-03-24 11:49:57 +0100 | [diff] [blame] | 418 | larl %r13,4f |
| 419 | lmh %r0,%r15,0(%r13) # clear high-order half |
Martin Schwidefsky | 1844c9b | 2010-02-26 22:37:53 +0100 | [diff] [blame] | 420 | jg startup_continue |
Martin Schwidefsky | 06c0dd7 | 2010-03-24 11:49:57 +0100 | [diff] [blame] | 421 | 4: .fill 16,4,0x0 |
Martin Schwidefsky | 1844c9b | 2010-02-26 22:37:53 +0100 | [diff] [blame] | 422 | #else |
| 423 | mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0) |
Martin Schwidefsky | b6112cc | 2009-04-14 15:36:28 +0200 | [diff] [blame] | 424 | l %r13,4f-.LPG0(%r13) |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 425 | b 0(%r13) |
Martin Schwidefsky | ab96e79 | 2009-04-14 15:36:29 +0200 | [diff] [blame] | 426 | .align 8 |
Martin Schwidefsky | 1844c9b | 2010-02-26 22:37:53 +0100 | [diff] [blame] | 427 | 4: .long startup_continue |
| 428 | #endif |
| 429 | .align 8 |
| 430 | 5: .long 0x7fffffff,0xffffffff |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 431 | |
Michael Holzheu | 60a0c68 | 2011-10-30 15:16:40 +0100 | [diff] [blame] | 432 | #include "head_kdump.S" |
| 433 | |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 434 | # |
| 435 | # params at 10400 (setup.h) |
| 436 | # |
| 437 | .org PARMAREA |
| 438 | .long 0,0 # IPL_DEVICE |
| 439 | .long 0,0 # INITRD_START |
| 440 | .long 0,0 # INITRD_SIZE |
Michael Holzheu | 60a0c68 | 2011-10-30 15:16:40 +0100 | [diff] [blame] | 441 | .long 0,0 # OLDMEM_BASE |
| 442 | .long 0,0 # OLDMEM_SIZE |
Martin Schwidefsky | e37f50e | 2008-12-25 13:39:19 +0100 | [diff] [blame] | 443 | |
| 444 | .org COMMAND_LINE |
| 445 | .byte "root=/dev/ram0 ro" |
| 446 | .byte 0 |
| 447 | |
Martin Schwidefsky | 1844c9b | 2010-02-26 22:37:53 +0100 | [diff] [blame] | 448 | .org 0x11000 |