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[Qemu-devel] [PATCH v3 11/11] AARCH64: Add 32-bit mode selection paramet
From: |
Mian M. Hamayun |
Subject: |
[Qemu-devel] [PATCH v3 11/11] AARCH64: Add 32-bit mode selection parameter |
Date: |
Fri, 27 Sep 2013 12:10:14 +0200 |
From: "Mian M. Hamayun" <address@hidden>
This commit introduces a commandline argument to select the
AARCH64 or AARCH32 mode for processor initilization.
Signed-off-by: Mian M. Hamayun <address@hidden>
---
qemu-options.hx | 8 ++++++++
target-arm/cpu.c | 9 +++++++--
vl.c | 4 ++++
3 files changed, 19 insertions(+), 2 deletions(-)
diff --git a/qemu-options.hx b/qemu-options.hx
index 5dc8b75..a2dab99 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -72,6 +72,14 @@ STEXI
Select CPU model (@code{-cpu help} for list and additional feature selection)
ETEXI
+DEF("aarch32-mode", 0, QEMU_OPTION_aarch32_mode, \
+ "-aarch32-mode enable aarch32 mode support on aarch64\n", QEMU_ARCH_ARM)
+STEXI
address@hidden -aarch32-mode
address@hidden -aarch32-mode
+Enable aarch32 guest support on aarch64.
+ETEXI
+
DEF("smp", HAS_ARG, QEMU_OPTION_smp,
"-smp
[cpus=]n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets]\n"
" set the number of CPUs to 'n' [default=1]\n"
diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index 5d811b9..56e8e56 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -27,6 +27,8 @@
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
+extern int aarch32_mode;
+
static void arm_cpu_set_pc(CPUState *cs, vaddr value)
{
ARMCPU *cpu = ARM_CPU(cs);
@@ -85,8 +87,11 @@ static void arm_cpu_reset(CPUState *s)
}
if (arm_feature(env, ARM_FEATURE_AARCH64)) {
- /* 64 bit CPUs always start in 64 bit mode */
- env->aarch64 = 1;
+ if(aarch32_mode) {
+ env->aarch64 = 0; /* Boot a 32-bit Guest */
+ } else {
+ env->aarch64 = 1; /* Boot a 64-bit Guest */
+ }
}
#if defined(CONFIG_USER_ONLY)
diff --git a/vl.c b/vl.c
index 4e709d5..e0f2cf3 100644
--- a/vl.c
+++ b/vl.c
@@ -207,6 +207,7 @@ CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
CharDriverState *sclp_hds[MAX_SCLP_CONSOLES];
int win2k_install_hack = 0;
int singlestep = 0;
+int aarch32_mode = 0;
int smp_cpus = 1;
int max_cpus = 0;
int smp_cores = 1;
@@ -3113,6 +3114,9 @@ int main(int argc, char **argv, char **envp)
case QEMU_OPTION_dtb:
qemu_opts_set(qemu_find_opts("machine"), 0, "dtb", optarg);
break;
+ case QEMU_OPTION_aarch32_mode:
+ aarch32_mode = 1;
+ break;
case QEMU_OPTION_cdrom:
drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);
break;
--
1.8.1.2
- Re: [Qemu-devel] [PATCH v3 02/11] AARCH64: add a57core, (continued)
- [Qemu-devel] [PATCH v3 03/11] AARCH64: Add A57 CPU to default AArch64 configuration and enable KVM, Mian M. Hamayun, 2013/09/27
- [Qemu-devel] [PATCH v3 04/11] AARCH64: Separate 32-bit specific code from common KVM hooks, Mian M. Hamayun, 2013/09/27
- [Qemu-devel] [PATCH v3 05/11] AARCH64: Add AARCH64 CPU initialization, get and put registers support, Mian M. Hamayun, 2013/09/27
- [Qemu-devel] [PATCH v3 06/11] target-arm: Parameterize the bootloader selection and setup mechanism, Mian M. Hamayun, 2013/09/27
- [Qemu-devel] [PATCH v3 07/11] AARCH64: Add boot support for aarch64 processor, Mian M. Hamayun, 2013/09/27
- [Qemu-devel] [PATCH v3 08/11] AARCH64: Enable SMP support for aarch64 processors using PSCI method, Mian M. Hamayun, 2013/09/27
- [Qemu-devel] [PATCH v3 09/11] AARCH64: Enable configure support for 32-bit guests on AARCH64, Mian M. Hamayun, 2013/09/27
- [Qemu-devel] [PATCH v3 10/11] AARCH64: Add flags and boot parameters for 32-bit guests on AARCH64, Mian M. Hamayun, 2013/09/27
- [Qemu-devel] [PATCH v3 11/11] AARCH64: Add 32-bit mode selection parameter,
Mian M. Hamayun <=