[Qemu-devel] [PULL 05/19] target/arm: Fix cortex-a7 id_isar0

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[Qemu-devel] [PULL 05/19] target/arm: Fix cortex-a7 id_isar0
Posted by Peter Maydell 6 years, 6 months ago
From: Richard Henderson <richard.henderson@linaro.org>

The incorrect value advertised only thumb2 div without arm div.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181008212205.17752-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/cpu.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 7ea7e4c1316..cd48ad42d87 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -1587,7 +1587,10 @@ static void cortex_a7_initfn(Object *obj)
     cpu->id_mmfr1 = 0x40000000;
     cpu->id_mmfr2 = 0x01240000;
     cpu->id_mmfr3 = 0x02102211;
-    cpu->id_isar0 = 0x01101110;
+    /* a7_mpcore_r0p5_trm, page 4-4 gives 0x01101110; but
+     * table 4-41 gives 0x02101110, which includes the arm div insns.
+     */
+    cpu->id_isar0 = 0x02101110;
     cpu->id_isar1 = 0x13112111;
     cpu->id_isar2 = 0x21232041;
     cpu->id_isar3 = 0x11112131;
-- 
2.19.0