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From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <philmd@linaro.org>
To: qemu-devel@nongnu.org
Cc: Harsh Prateek Bora <harshpb@linux.ibm.com>,
Nicholas Piggin <npiggin@gmail.com>,
Daniel Henrique Barboza <danielhb413@gmail.com>,
"Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
=?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>,
BALATON Zoltan <balaton@eik.bme.hu>, qemu-ppc@nongnu.org,
=?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
=?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <philmd@linaro.org>,
Peter Maydell <peter.maydell@linaro.org>
Subject: [PATCH v3 7/7] hw/ppc/epapr: Do not swap ePAPR magic value
Date: Wed, 18 Dec 2024 19:21:06 +0100
Message-ID: <20241218182106.78800-8-philmd@linaro.org>
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The ePAPR magic value in $r6 doesn't need to be byte swapped.
See ePAPR-v1.1.pdf chapter 5.4.1 "Boot CPU Initial Register State"
and the following mailing-list thread:
https://lore.kernel.org/qemu-devel/CAFEAcA_NR4XW5DNL4nq7vnH4XRH5UWbhQCxuLyK=
qYk6_FCBrAA@mail.gmail.com/
Signed-off-by: Philippe Mathieu-Daud=C3=A9 <philmd@linaro.org>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
---
hw/ppc/sam460ex.c | 2 +-
hw/ppc/virtex_ml507.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c
index 78e2a46e753..db9c8f3fa6e 100644
--- a/hw/ppc/sam460ex.c
+++ b/hw/ppc/sam460ex.c
@@ -234,7 +234,7 @@ static void main_cpu_reset(void *opaque)
=20
/* Create a mapping for the kernel. */
booke_set_tlb(&env->tlb.tlbe[0], 0, 0, 1 << 31);
- env->gpr[6] =3D tswap32(EPAPR_MAGIC);
+ env->gpr[6] =3D EPAPR_MAGIC;
env->gpr[7] =3D (16 * MiB) - 8; /* bi->ima_size; */
=20
} else {
diff --git a/hw/ppc/virtex_ml507.c b/hw/ppc/virtex_ml507.c
index f378e5c4a90..6197d31d88f 100644
--- a/hw/ppc/virtex_ml507.c
+++ b/hw/ppc/virtex_ml507.c
@@ -119,7 +119,7 @@ static void main_cpu_reset(void *opaque)
/* Create a mapping spanning the 32bit addr space. */
booke_set_tlb(&env->tlb.tlbe[0], 0, 0, 1U << 31);
booke_set_tlb(&env->tlb.tlbe[1], 0x80000000, 0x80000000, 1U << 31);
- env->gpr[6] =3D tswap32(EPAPR_MAGIC);
+ env->gpr[6] =3D EPAPR_MAGIC;
env->gpr[7] =3D bi->ima_size;
}
=20
--=20
2.45.2