[Qemu-devel] [PATCH 0/6] arm_boot/vexpress-a15: Support >4GB of RAM

[Peter Maydell]

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(-)