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X-Received-From: 2a00:1450:4864:20::342 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Taking from the wiki page mention: - both 32 and 64 bit architectures - the roll of A/M profile chips - warn about kernel portability - gently suggest -M virt - add headlines for groups of boards This is still incomplete but hopefully is a less of a straight dive into a dry list of peripherals. Signed-off-by: Alex Benn=C3=A9e --- docs/system/target-arm.rst | 47 +++++++++++++++++++++++++++++++++++--- 1 file changed, 44 insertions(+), 3 deletions(-) diff --git a/docs/system/target-arm.rst b/docs/system/target-arm.rst index d2a3b44ce88..28aaef011d6 100644 --- a/docs/system/target-arm.rst +++ b/docs/system/target-arm.rst @@ -3,8 +3,35 @@ ARM System emulator ------------------- =20 -Use the executable ``qemu-system-arm`` to simulate a ARM machine. The -ARM Integrator/CP board is emulated with the following devices: +Use the executable ``qemu-system-arm`` to simulate a 32 bit ARM +machine. The ``qemu-system-aarch64`` executable is used to simulate +the 64 bit ARM AArch64 architecture. AArch64 CPUs can often include an +AArch32 execution unit and execute a mix of 64 and 32 bit code. + +The emulator supports both "A-profile" and "M-profile" CPUs. The +A-profile CPUs have a full MMU and can run things like the Linux while +the M-profile CPUs are typically used in embedded micro-controller +boards. + +Because ARM systems differ so much and in fundamental ways, typically +operating system or firmware images intended to run on one machine +will not run at all on any other. + +If you don't care about running on a particular piece of hardware the +``-M virt`` board provides a PCI based virtio board which can be +configured with a range of RAM sizes, CPU types and virtio based +peripherals. It is generally the target you want to use if general +purpose operating systems. + +Otherwise a range of other machine types are available. Passing ``-M +help`` to the command line will list them all. They include the +following: + +ARM Integrator/CP +~~~~~~~~~~~~~~~~~ + +This is a development board intended for prototyping and developing +ARM-based devices. =20 - ARM926E, ARM1026E, ARM946E, ARM1136 or Cortex-A8 CPU =20 @@ -18,7 +45,11 @@ ARM Integrator/CP board is emulated with the following d= evices: =20 - PL181 MultiMedia Card Interface with SD card. =20 -The ARM Versatile baseboard is emulated with the following devices: +ARM Versatile/Versatile Express +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Another family of development boards. The more recent Versatile +Express boards are designed for modern Cortex processors. =20 - ARM926E, ARM1136 or Cortex-A8 CPU =20 @@ -45,6 +76,9 @@ The ARM Versatile baseboard is emulated with the followin= g devices: =20 - PL181 MultiMedia Card Interface with SD card. =20 +ARM RealView +~~~~~~~~~~~~ + Several variants of the ARM RealView baseboard are emulated, including the EB, PB-A8 and PBX-A9. Due to interactions with the bootloader, only certain Linux kernel configurations work out of the box on these boards. @@ -77,6 +111,9 @@ The following devices are emulated: =20 - PL181 MultiMedia Card Interface with SD card. =20 +Various PDA machines +~~~~~~~~~~~~~~~~~~~~ + The XScale-based clamshell PDA models (\"Spitz\", \"Akita\", \"Borzoi\" and \"Terrier\") emulation includes the following peripherals: =20 @@ -156,6 +193,10 @@ Nokia N800 and N810 internet tablets (known also as RX= -34 and RX-44 / - Nokia RETU and TAHVO multi-purpose chips with an RTC, connected through CBUS =20 + +M-profile boards +~~~~~~~~~~~~~~~~ + The Luminary Micro Stellaris LM3S811EVB emulation includes the following devices: =20 --=20 2.20.1