qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org
Subject: [Qemu-devel] [PATCH target-arm v1 1/1] arm: cortex-a9: Fix cache-line size
Date: Sun, 17 Aug 2014 18:59:59 -0700	[thread overview]
Message-ID: <2b30c3cba10c4cb7fe7e769fe9a7db8849ae3c63.1408326727.git.peter.crosthwaite@xilinx.com> (raw)

Caches are 16 bytes in A9. Self identify in CCSIDR accordingly.

QEMU doesn't emulate caches, but we should still report the correct
cache-line size to the guest. Some guests (like u-boot) complain if
the cache-line size mismatches a requested flush or invalidate
operation.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
---

 target-arm/cpu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index 7cebb76..f49130a 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -713,8 +713,8 @@ static void cortex_a9_initfn(Object *obj)
     cpu->id_isar3 = 0x11112131;
     cpu->id_isar4 = 0x00111142;
     cpu->clidr = (1 << 27) | (1 << 24) | 3;
-    cpu->ccsidr[0] = 0xe00fe015; /* 16k L1 dcache. */
-    cpu->ccsidr[1] = 0x200fe015; /* 16k L1 icache. */
+    cpu->ccsidr[0] = 0xe00fe011; /* 16k L1 dcache. */
+    cpu->ccsidr[1] = 0x200fe011; /* 16k L1 icache. */
     define_arm_cp_regs(cpu, cortexa9_cp_reginfo);
 }
 
-- 
2.0.1.1.gfbfc394

             reply	other threads:[~2014-08-18  2:00 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-18  1:59 Peter Crosthwaite [this message]
2014-08-18  2:18 ` [Qemu-devel] [PATCH target-arm v1 1/1] arm: cortex-a9: Fix cache-line size Edgar E. Iglesias
2014-08-18  2:57   ` Peter Crosthwaite
2014-08-18  3:12     ` Edgar E. Iglesias

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=2b30c3cba10c4cb7fe7e769fe9a7db8849ae3c63.1408326727.git.peter.crosthwaite@xilinx.com \
    --to=peter.crosthwaite@xilinx.com \
    --cc=peter.maydell@linaro.org \
    --cc=qemu-devel@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).