Hi,
On 08/31/2017 09:55 AM, Bin Meng wrote:
Hi Tuomas,
On Wed, Aug 30, 2017 at 4:31 PM, Tuomas Tynkkynen
<tuomas.tynkky...@iki.fi> wrote:
This board builds an U-Boot binary that is bootable with QEMU's 'virt'
machine on ARM. The minimal QEMU command line is:
qemu-system-arm -machine virt,highmem=off -bios u-boot.bin
(Note that the 'highmem=off' parameter to the 'virt' machine is required for
PCI to work in U-Boot.) This command line enables the following:
- u-boot.bin loaded and executing in the emulated flash at address 0x0
- A generated device tree blob placed at the start of RAM
- A freely configurable amount of RAM, described by the DTB
- A PL011 serial port, discoverable via the DTB
- An ARMv7 architected timer
- PSCI for rebooting the system
- A generic ECAM-based PCI host controller, discoverable via the DTB
Additionally, QEMU allows plugging a bunch of useful peripherals to the PCI bus.
The following ones are supported by both U-Boot and Linux:
- To enable a Serial ATA disk via an Intel ICH9 AHCI controller, pass e.g.:
-drive if=none,file=disk.img,id=mydisk -device ich9-ahci,id=ahci -device
ide-drive,drive=mydisk,bus=ahci.0
- To enable an Intel E1000 network adapter, pass e.g.:
-net nic,model=e1000 -net user
- To add an EHCI-compliant USB host controller, pass e.g.:
-device usb-ehci,id=ehci
Can we enable the NVMe driver (CONFIG_NVME) here?
Yes, 'nvme scan' and 'nvme list' it appear to work. I'll enable it.
There is a bunch of spew of this form though:
CACHE: Misaligned operation at range [bef5d000, bef5d020]
Signed-off-by: Tuomas Tynkkynen <tuomas.tynkky...@iki.fi>
---
arch/arm/Kconfig | 10 ++++++++
arch/arm/mach-qemu/Kconfig | 9 +++++++
board/qemu-arm/Makefile | 5 ++++
board/qemu-arm/qemu-arm.c | 35 ++++++++++++++++++++++++++
configs/qemu_arm_defconfig | 27 ++++++++++++++++++++
include/configs/qemu-arm.h | 63 ++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 149 insertions(+)
create mode 100644 arch/arm/mach-qemu/Kconfig
create mode 100644 board/qemu-arm/Makefile
create mode 100644 board/qemu-arm/qemu-arm.c
create mode 100644 configs/qemu_arm_defconfig
create mode 100644 include/configs/qemu-arm.h
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 53d0831935..0d01ba1b73 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -630,6 +630,14 @@ config ARCH_MX5
select CPU_V7
select BOARD_EARLY_INIT_F
+config ARCH_QEMU
+ bool "QEMU Virtual Platform"
+ select CPU_V7
+ select ARCH_SUPPORT_PSCI
+ select DM
+ select DM_SERIAL
+ select OF_CONTROL
+
config ARCH_RMOBILE
bool "Renesas ARM SoCs"
select DM
@@ -1149,6 +1157,8 @@ source "arch/arm/mach-stm32/Kconfig"
source "arch/arm/mach-sunxi/Kconfig"
+source "arch/arm/mach-qemu/Kconfig"
+
Can you insert this by following alphabetical order?
Oops, yes of course.
source "arch/arm/mach-tegra/Kconfig"
source "arch/arm/mach-uniphier/Kconfig"
diff --git a/arch/arm/mach-qemu/Kconfig b/arch/arm/mach-qemu/Kconfig
new file mode 100644
index 0000000000..89d2a36719
--- /dev/null
+++ b/arch/arm/mach-qemu/Kconfig
@@ -0,0 +1,9 @@
+if ARCH_QEMU
+
+config SYS_BOARD
+ default "qemu-arm"
+
+config SYS_CONFIG_NAME
+ default "qemu-arm"
+
+endif
diff --git a/board/qemu-arm/Makefile b/board/qemu-arm/Makefile
new file mode 100644
index 0000000000..3e9907d983
--- /dev/null
+++ b/board/qemu-arm/Makefile
Can this new board be put into the board/emulation/qemu-arm directory?
Since qemu-x86 is put there.
Sure. There is still qemu-mips directly under board/ though.
@@ -0,0 +1,5 @@
+#
+# SPDX-License-Identifier: GPL-2.0
+#
+
+obj-y += qemu-arm.o
diff --git a/board/qemu-arm/qemu-arm.c b/board/qemu-arm/qemu-arm.c
new file mode 100644
index 0000000000..90d7badbf4
--- /dev/null
+++ b/board/qemu-arm/qemu-arm.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2017 Tuomas Tynkkynen
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <fdtdec.h>
+
+DECLARE_GLOBAL_DATA_PTR;
This is not needed as gd is not referenced in this file.
Now removed.
Thank you for the review.
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