diff options
| author | Alexander Graf <agraf@suse.de> | 2012-01-31 03:46:55 +0100 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2012-02-02 02:47:49 +0100 |
| commit | a496e8eeba51351af136734e475c947a3673dded (patch) | |
| tree | efce0e9235f433ab09f73b406e0faa09d3394e4f /target-ppc | |
| parent | 8917f4dc62a081c684a1769d38c538df94db9cf0 (diff) | |
PPC: E500: Populate L1CFG0 SPR
When running Linux on e500 with powersave-nap enabled, Linux tries to
read out the L1CFG0 register and calculates some things from it. Passing
0 there ends up in a division by 0, resulting in -1, resulting in badness.
So let's populate the L1CFG0 register with reasonable defaults. That way
guests aren't completely confused.
Reported-by: Shrijeet Mukherjee <shm@cumulusnetworks.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/translate_init.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c index 7848cd7394..6253076f68 100644 --- a/target-ppc/translate_init.c +++ b/target-ppc/translate_init.c @@ -4434,6 +4434,8 @@ static void init_proc_e500 (CPUPPCState *env, int version) { uint32_t tlbncfg[2]; uint64_t ivor_mask = 0x0000000F0000FFFFULL; + uint32_t l1cfg0 = 0x3800 /* 8 ways */ + | 0x0020; /* 32 kb */ #if !defined(CONFIG_USER_ONLY) int i; #endif @@ -4485,6 +4487,7 @@ static void init_proc_e500 (CPUPPCState *env, int version) tlbncfg[1] = gen_tlbncfg(64, 1, 12, TLBnCFG_AVAIL | TLBnCFG_IPROT, 64); env->dcache_line_size = 64; env->icache_line_size = 64; + l1cfg0 |= 0x1000000; /* 64 byte cache block size */ break; default: cpu_abort(env, "Unknown CPU: " TARGET_FMT_lx "\n", env->spr[SPR_PVR]); @@ -4535,7 +4538,7 @@ static void init_proc_e500 (CPUPPCState *env, int version) spr_register(env, SPR_Exxx_L1CFG0, "L1CFG0", SPR_NOACCESS, SPR_NOACCESS, &spr_read_generic, &spr_write_generic, - 0x00000000); + l1cfg0); /* XXX : not implemented */ spr_register(env, SPR_Exxx_L1CSR0, "L1CSR0", SPR_NOACCESS, SPR_NOACCESS, |