diff options
| author | Peter Lieven <pl@kamp.de> | 2015-01-12 10:45:17 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-01-14 10:38:57 +0100 |
| commit | 6f84da3a07668ce881a0c853390eb05313d61157 (patch) | |
| tree | 56260af8d5d16c73f199e592e38c7b183e2209c8 /hw/scsi/lsi53c895a.c | |
| parent | e1660dc57c1bacb78cbe39001e58a577c927dacb (diff) | |
| download | qemu-6f84da3a07668ce881a0c853390eb05313d61157.tar.gz | |
hw/scsi/lsi53c895a: add support for additional diag / debug registers
Some ancient Linux kernels read from registers 0x09 and 0x3c-3f during
boot. According to the spec these registers are for diag and debug
purposes only. If they are absend qemu aborts on read.
Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/scsi/lsi53c895a.c')
| -rw-r--r-- | hw/scsi/lsi53c895a.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c index ec920488d6..db7d4b8c9c 100644 --- a/hw/scsi/lsi53c895a.c +++ b/hw/scsi/lsi53c895a.c @@ -277,6 +277,7 @@ typedef struct { uint32_t csbc; uint32_t scratch[18]; /* SCRATCHA-SCRATCHR */ uint8_t sbr; + uint32_t adder; /* Script ram is stored as 32-bit words in host byteorder. */ uint32_t script_ram[2048]; @@ -1389,6 +1390,7 @@ again: switch ((insn >> 27) & 7) { case 0: /* Jump */ DPRINTF("Jump to 0x%08x\n", addr); + s->adder = addr; s->dsp = addr; break; case 1: /* Call */ @@ -1513,6 +1515,8 @@ static uint8_t lsi_reg_readb(LSIState *s, int offset) return 0x7f; case 0x08: /* Revision ID */ return 0x00; + case 0x09: /* SOCL */ + return s->socl; case 0xa: /* SSID */ return s->ssid; case 0xb: /* SBCL */ @@ -1577,6 +1581,8 @@ static uint8_t lsi_reg_readb(LSIState *s, int offset) return s->sbr; case 0x3b: /* DCNTL */ return s->dcntl; + /* ADDER Output (Debug of relative jump address) */ + CASE_GET_REG32(adder, 0x3c) case 0x40: /* SIEN0 */ return s->sien0; case 0x41: /* SIEN1 */ |