From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40035) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YBKSi-00030s-Fy for qemu-devel@nongnu.org; Wed, 14 Jan 2015 04:42:10 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YBKSc-0000Bp-Ka for qemu-devel@nongnu.org; Wed, 14 Jan 2015 04:42:04 -0500 Received: from mail-we0-x22e.google.com ([2a00:1450:400c:c03::22e]:51799) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YBKSc-0000BS-EA for qemu-devel@nongnu.org; Wed, 14 Jan 2015 04:41:58 -0500 Received: by mail-we0-f174.google.com with SMTP id k48so7679281wev.5 for ; Wed, 14 Jan 2015 01:41:57 -0800 (PST) Sender: Paolo Bonzini From: Paolo Bonzini Date: Wed, 14 Jan 2015 10:41:28 +0100 Message-Id: <1421228492-19856-12-git-send-email-pbonzini@redhat.com> In-Reply-To: <1421228492-19856-1-git-send-email-pbonzini@redhat.com> References: <1421228492-19856-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PULL 11/15] hw/scsi/lsi53c895a: add support for additional diag / debug registers List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Peter Lieven From: Peter Lieven 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 Signed-off-by: Paolo Bonzini --- hw/scsi/lsi53c895a.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c index ec92048..db7d4b8 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 */ -- 1.8.3.1