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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-06-12 10:26:23 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-06-12 10:27:30 +0200 |
| commit | 8c4caa4fbfc18aa50d9d682f502303a8e0d72726 (patch) | |
| tree | 7316383146558c99a6b5bd1d6766c58eab81513f /arch/s390 | |
| parent | [S390] implement interrupt-enabling rwlocks (diff) | |
| download | linux-8c4caa4fbfc18aa50d9d682f502303a8e0d72726.tar.xz linux-8c4caa4fbfc18aa50d9d682f502303a8e0d72726.zip | |
[S390] use facility list for cpu type safety check
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/lowcore.h | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/head.S | 49 |
2 files changed, 35 insertions, 15 deletions
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 3aeca492b147..713fe9fb1fcc 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -30,6 +30,7 @@ #define __LC_SUBCHANNEL_NR 0x00ba #define __LC_IO_INT_PARM 0x00bc #define __LC_IO_INT_WORD 0x00c0 +#define __LC_STFL_FAC_LIST 0x00c8 #define __LC_MCCK_CODE 0x00e8 #define __LC_DUMP_REIPL 0x0e00 diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index 22596d70fc2e..bf8cf1caeffc 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -479,27 +479,46 @@ startup:basr %r13,0 # get base mvc __LC_LAST_UPDATE_TIMER(8),6f-.LPG0(%r13) mvc __LC_EXIT_TIMER(8),5f-.LPG0(%r13) #ifndef CONFIG_MARCH_G5 - # check processor version against MARCH_{G5,Z900,Z990,Z9_109,Z10} - stidp __LC_CPUID # store cpuid - lhi %r0,(3f-2f) / 2 - la %r1,2f-.LPG0(%r13) -0: clc __LC_CPUID+4(2),0(%r1) - jne 3f - lpsw 1f-.LPG0(13) # machine type not good enough, crash + # check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10} + xc __LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST + stfl __LC_STFL_FAC_LIST # store facility list + tm __LC_STFL_FAC_LIST,0x01 # stfle available ? + jz 0f + la %r0,0 + .insn s,0xb2b00000,__LC_STFL_FAC_LIST # store facility list extended +0: l %r0,__LC_STFL_FAC_LIST + n %r0,2f+8-.LPG0(%r13) + cl %r0,2f+8-.LPG0(%r13) + jne 1f + l %r0,__LC_STFL_FAC_LIST+4 + n %r0,2f+12-.LPG0(%r13) + cl %r0,2f+12-.LPG0(%r13) + je 3f +1: lpsw 2f-.LPG0(13) # machine type not good enough, crash .align 16 -1: .long 0x000a0000,0x00000000 -2: +2: .long 0x000a0000,0x8badcccc +#if defined(CONFIG_64BIT) +#if defined(CONFIG_MARCH_Z10) + .long 0xc100efe3, 0xf0680000 +#elif defined(CONFIG_MARCH_Z9_109) + .long 0xc100efc3, 0x00000000 +#elif defined(CONFIG_MARCH_Z990) + .long 0xc0002000, 0x00000000 +#elif defined(CONFIG_MARCH_Z900) + .long 0xc0000000, 0x00000000 +#endif +#else #if defined(CONFIG_MARCH_Z10) - .short 0x9672, 0x2064, 0x2066, 0x2084, 0x2086, 0x2094, 0x2096 + .long 0x8100c880, 0x00000000 #elif defined(CONFIG_MARCH_Z9_109) - .short 0x9672, 0x2064, 0x2066, 0x2084, 0x2086 + .long 0x8100c880, 0x00000000 #elif defined(CONFIG_MARCH_Z990) - .short 0x9672, 0x2064, 0x2066 + .long 0x80002000, 0x00000000 #elif defined(CONFIG_MARCH_Z900) - .short 0x9672 + .long 0x80000000, 0x00000000 +#endif #endif -3: la %r1,2(%r1) - brct %r0,0b +3: #endif l %r13,4f-.LPG0(%r13) |