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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 01:10:04 +00:00
[S390] use facility list for cpu type safety check
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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parent
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commit
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2 changed files with 35 additions and 15 deletions
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@ -30,6 +30,7 @@
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#define __LC_SUBCHANNEL_NR 0x00ba
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#define __LC_IO_INT_PARM 0x00bc
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#define __LC_IO_INT_WORD 0x00c0
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#define __LC_STFL_FAC_LIST 0x00c8
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#define __LC_MCCK_CODE 0x00e8
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#define __LC_DUMP_REIPL 0x0e00
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@ -479,27 +479,46 @@ startup:basr %r13,0 # get base
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mvc __LC_LAST_UPDATE_TIMER(8),6f-.LPG0(%r13)
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mvc __LC_EXIT_TIMER(8),5f-.LPG0(%r13)
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#ifndef CONFIG_MARCH_G5
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# check processor version against MARCH_{G5,Z900,Z990,Z9_109,Z10}
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stidp __LC_CPUID # store cpuid
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lhi %r0,(3f-2f) / 2
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la %r1,2f-.LPG0(%r13)
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0: clc __LC_CPUID+4(2),0(%r1)
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jne 3f
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lpsw 1f-.LPG0(13) # machine type not good enough, crash
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# check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10}
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xc __LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST
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stfl __LC_STFL_FAC_LIST # store facility list
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tm __LC_STFL_FAC_LIST,0x01 # stfle available ?
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jz 0f
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la %r0,0
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.insn s,0xb2b00000,__LC_STFL_FAC_LIST # store facility list extended
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0: l %r0,__LC_STFL_FAC_LIST
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n %r0,2f+8-.LPG0(%r13)
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cl %r0,2f+8-.LPG0(%r13)
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jne 1f
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l %r0,__LC_STFL_FAC_LIST+4
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n %r0,2f+12-.LPG0(%r13)
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cl %r0,2f+12-.LPG0(%r13)
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je 3f
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1: lpsw 2f-.LPG0(13) # machine type not good enough, crash
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.align 16
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1: .long 0x000a0000,0x00000000
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2:
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2: .long 0x000a0000,0x8badcccc
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#if defined(CONFIG_64BIT)
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#if defined(CONFIG_MARCH_Z10)
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.short 0x9672, 0x2064, 0x2066, 0x2084, 0x2086, 0x2094, 0x2096
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.long 0xc100efe3, 0xf0680000
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#elif defined(CONFIG_MARCH_Z9_109)
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.short 0x9672, 0x2064, 0x2066, 0x2084, 0x2086
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.long 0xc100efc3, 0x00000000
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#elif defined(CONFIG_MARCH_Z990)
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.short 0x9672, 0x2064, 0x2066
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.long 0xc0002000, 0x00000000
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#elif defined(CONFIG_MARCH_Z900)
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.short 0x9672
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.long 0xc0000000, 0x00000000
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#endif
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3: la %r1,2(%r1)
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brct %r0,0b
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#else
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#if defined(CONFIG_MARCH_Z10)
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.long 0x8100c880, 0x00000000
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#elif defined(CONFIG_MARCH_Z9_109)
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.long 0x8100c880, 0x00000000
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#elif defined(CONFIG_MARCH_Z990)
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.long 0x80002000, 0x00000000
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#elif defined(CONFIG_MARCH_Z900)
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.long 0x80000000, 0x00000000
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#endif
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#endif
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3:
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#endif
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l %r13,4f-.LPG0(%r13)
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