From 2345f1c0146672ce6eb0025bd2cfa4afabdef5fd Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Thu, 27 Jun 2013 00:31:42 +0200 Subject: [PATCH] PPC: Ignore writes to L2CR The L2CR register contains a number of bits that either impose configuration which we can't deal with or mean "something is in progress until the bit is 0 again". Since we don't model the former and we do want to accomodate guests using the latter semantics, let's just ignore writes to L2CR. That way guests always read back 0 and are usually happy with that. Signed-off-by: Alexander Graf --- target-ppc/translate_init.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c index 937390a..50e0ee5 100644 --- a/target-ppc/translate_init.c +++ b/target-ppc/translate_init.c @@ -1381,7 +1381,7 @@ static void gen_spr_74xx (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Not strictly an SPR */ vscr_init(env, 0x00010000); @@ -5169,7 +5169,7 @@ static void init_proc_750 (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Time base */ gen_tbl(env); @@ -5232,7 +5232,7 @@ static void init_proc_750cl (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Time base */ gen_tbl(env); @@ -5418,7 +5418,7 @@ static void init_proc_750cx (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Time base */ gen_tbl(env); @@ -5485,7 +5485,7 @@ static void init_proc_750fx (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Time base */ gen_tbl(env); @@ -5557,7 +5557,7 @@ static void init_proc_750gx (CPUPPCState *env) /* XXX : not implemented (XXX: different from 750fx) */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Time base */ gen_tbl(env); @@ -5693,7 +5693,7 @@ static void init_proc_755 (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* XXX : not implemented */ spr_register(env, SPR_L2PMCR, "L2PMCR", @@ -6524,7 +6524,7 @@ static void init_proc_970 (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Memory management */ /* XXX: not correct */ @@ -6624,7 +6624,7 @@ static void init_proc_970FX (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Memory management */ /* XXX: not correct */ @@ -6736,7 +6736,7 @@ static void init_proc_970GX (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Memory management */ /* XXX: not correct */ @@ -6836,7 +6836,7 @@ static void init_proc_970MP (CPUPPCState *env) /* XXX : not implemented */ spr_register(env, SPR_L2CR, "L2CR", SPR_NOACCESS, SPR_NOACCESS, - &spr_read_generic, &spr_write_generic, + &spr_read_generic, NULL, 0x00000000); /* Memory management */ /* XXX: not correct */ -- 2.7.4