From: Philippe Mathieu-Daudé <[email protected]>
Similarly to the Pi A, the Pi Zero uses a BCM2835 SoC (ARMv6Z core).
The only difference between the revision 1.2 and 1.3 is the latter
exposes a CSI camera connector. As we do not implement the Unicam
peripheral, there is no point in exposing a camera connector :)
Therefore we choose to model the 1.2 revision.
Example booting the machine using content from [*]:
$ qemu-system-arm -M raspi0 -serial stdio \
-kernel raspberrypi/firmware/boot/kernel.img \
-dtb raspberrypi/firmware/boot/bcm2708-rpi-zero.dtb \
-append 'printk.time=0 earlycon=pl011,0x20201000 console=ttyAMA0'
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.19.118+ (dom@buildbot) (gcc version 4.9.3
(crosstool-NG crosstool-ng-1.22.0-88-g8460611)) #1311 Mon Apr 27 14:16:15 BST
2020
[ 0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7),
cr=00c5387d
[ 0.000000] CPU: VIPT aliasing data cache, unknown instruction cache
[ 0.000000] OF: fdt: Machine model: Raspberry Pi Zero
...
[*]
http://archive.raspberrypi.org/debian/pool/main/r/raspberrypi-firmware/raspberrypi-kernel_1.20200512-2_armhf.deb
Reviewed-by: Luc Michel <[email protected]>
Reviewed-by: Igor Mammedov <[email protected]>
Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
Message-id: [email protected]
Signed-off-by: Peter Maydell <[email protected]>
---
hw/arm/raspi.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
index 79fdd354603..0f5ea7e99b5 100644
--- a/hw/arm/raspi.c
+++ b/hw/arm/raspi.c
@@ -319,6 +319,15 @@ static void raspi_machine_class_common_init(MachineClass
*mc,
mc->default_ram_id = "ram";
};
+static void raspi0_machine_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+ RaspiMachineClass *rmc = RASPI_MACHINE_CLASS(oc);
+
+ rmc->board_rev = 0x920092; /* Revision 1.2 */
+ raspi_machine_class_common_init(mc, rmc->board_rev);
+};
+
static void raspi1ap_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
@@ -352,6 +361,10 @@ static void raspi3b_machine_class_init(ObjectClass *oc,
void *data)
static const TypeInfo raspi_machine_types[] = {
{
+ .name = MACHINE_TYPE_NAME("raspi0"),
+ .parent = TYPE_RASPI_MACHINE,
+ .class_init = raspi0_machine_class_init,
+ }, {
.name = MACHINE_TYPE_NAME("raspi1ap"),
.parent = TYPE_RASPI_MACHINE,
.class_init = raspi1ap_machine_class_init,
--
2.20.1
