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[Qemu-devel] [PATCH 0/6] arm_boot/vexpress-a15: Support >4GB of RAM
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 0/6] arm_boot/vexpress-a15: Support >4GB of RAM |
Date: |
Thu, 5 Jul 2012 18:00:46 +0100 |
This patchset adds support for booting with >4GB of RAM on the
Versatile Express Cortex-A15 model. There are some caveats:
* you need an LPAE A15 kernel
* you need to be booting with device tree
* your device tree blob needs to specify #address-cells and
#size-cells as 2 (so addresses and sizes are 64 bit), which
means you'll need to tweak the stock kernel dtb
* you need a minor kernel patch which stops the kernel throwing away
the high 32 bits of the RAM size: http://patches.linaro.org/9856/
* you need a 64 bit host, obviously
This patchset sits on top of the LPAE patches and that bugfix
patch for 64 bit cp register writes.
Peter: I've cc'd you as device-tree.[ch] maintainer since I've
added some new helper functions there.
Peter Maydell (6):
hw/arm_boot.c: Make ram_size a target_phys_addr_t
hw/arm_boot.c: Consistently use ram_size from arm_boot_info struct
hw/arm_boot.c: Check for RAM sizes exceeding ATAGS capacity
device_tree: Add support for reading device tree properties
hw/arm_boot.c: Support DTBs which use 64 bit addresses
hw/vexpress.c: Allow >4GB of RAM for Cortex-A15 daughterboard
device_tree.c | 30 ++++++++++++++++++++++++++++++
device_tree.h | 4 ++++
hw/arm-misc.h | 2 +-
hw/arm_boot.c | 46 +++++++++++++++++++++++++++++++++++++++++-----
hw/vexpress.c | 13 ++++++++++---
5 files changed, 86 insertions(+), 9 deletions(-)
- [Qemu-devel] [PATCH 0/6] arm_boot/vexpress-a15: Support >4GB of RAM,
Peter Maydell <=