diff mbox series

[v3,3/6] target/arm/tcg: increase cache level for cpu=max

Message ID 20241010111822.345-4-alireza.sanaee@huawei.com (mailing list archive)
State New
Headers show
Series Specifying cache topology on ARM | expand

Commit Message

Alireza Sanaee Oct. 10, 2024, 11:18 a.m. UTC 
This patch addresses cache description in the `aarch64_max_tcg_initfn`
function for cpu=max. It introduces three layers of caches and modifies
the cache description registers accordingly.

Signed-off-by: Alireza Sanaee <alireza.sanaee@huawei.com>
---
 target/arm/tcg/cpu64.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff mbox series

Patch

diff --git a/target/arm/tcg/cpu64.c b/target/arm/tcg/cpu64.c
index 904a7e90b4..47d8c9c9ae 100644
--- a/target/arm/tcg/cpu64.c
+++ b/target/arm/tcg/cpu64.c
@@ -1086,6 +1086,19 @@  void aarch64_max_tcg_initfn(Object *obj)
     uint64_t t;
     uint32_t u;
 
+    /*
+     * Expanded cache set
+     */
+    cpu->clidr = 0x8200123; /* 4 4 3 in 3 bit fields */
+    /* 64KB L1 dcache */
+    cpu->ccsidr[0] = make_ccsidr(CCSIDR_FORMAT_LEGACY, 4, 64, 64 * KiB, 7);
+    /* 64KB L1 icache */
+    cpu->ccsidr[1] = make_ccsidr(CCSIDR_FORMAT_LEGACY, 4, 64, 64 * KiB, 2);
+    /* 1MB L2 unified cache */
+    cpu->ccsidr[2] = make_ccsidr(CCSIDR_FORMAT_LEGACY, 8, 64, 1 * MiB, 7);
+    /* 2MB L3 unified cache */
+    cpu->ccsidr[4] = make_ccsidr(CCSIDR_FORMAT_LEGACY, 8, 64, 2 * MiB, 7);
+
     /*
      * Unset ARM_FEATURE_BACKCOMPAT_CNTFRQ, which we would otherwise default
      * to because we started with aarch64_a57_initfn(). A 'max' CPU might