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[Qemu-devel] [PATCH v2 0/9] arm: add ast2500 support

From: Cédric Le Goater
Subject: [Qemu-devel] [PATCH v2 0/9] arm: add ast2500 support
Date: Thu, 28 Jul 2016 16:28:10 +0200

The ast2500 soc being very close to the ast2400 soc, the goal of the
changes below is to modify the existing platform 'palmetto-bmc' and
existing soc 'ast2400' to take into account the small differences and
avoid code duplication. This is mostly inspired by the realview

First patches rework the 'palmetto-bmc' platform and the 'ast2400' soc
models to provide room to other platforms and socs which have a common
design. Being able to set the 'silicon-rev' and the cpu model are the
primary motivation.

The last patches add support for the new ast2500 soc in the required
controller (sdmc and scu) and define a new platform for an Aspeed
evaluation board.

On the ast2500, I am still having a little issue under uboot which
sets the vbar doing :

        mcr     p15, 0, r0, c12, c0, 0  /* Set VBAR */

and this is trapped as an undefined instruction by qemu.

Looking at hw/arm/helper.c, the VBAR register seems to be defined only
for feature ARM_FEATURE_V7 (v7_cp_reginfo). The ast2500 soc uses a
arm1176 which defines ARM_FEATURE_EL3 which gives us a VBAR_EL3.
According to th specs, the arm1176jzf-s has a Vector Base Address
Register. So am I missing something in the board definition or is
uboot being too optimistic on the cpu features ? This is confusing for
me, some direction would be welcomed :)

A part from that, the soc behaves fine.


Most notable changes in v2 are :

  - palmetto_bmc.c file rename
  - SCU macros to define the hardware strapping register 

Cédric Le Goater (9):
  palmetto-bmc: rename file to aspeed.c
  palmetto-bmc: add a "silicon-rev" property at the soc level
  palmetto-bmc: replace palmetto_bmc with aspeed
  ast2400: use machine cpu_model to initialize the soc cpu
  palmetto-bmc: add board specific configuration
  hw/misc: use macros to define hw-strap1 register on Aspeed SOC
  aspeed: add ast2500 support to scu and sdmc controllers
  arm: add support for an ast2500 evaluation board
  palmetto-bmc: remove extra no_sdcard assignement

 hw/arm/Makefile.objs         |   2 +-
 hw/arm/aspeed.c              | 166 +++++++++++++++++++++++++++++++++++++++++++
 hw/arm/ast2400.c             |  21 ++++--
 hw/arm/palmetto-bmc.c        | 102 --------------------------
 hw/misc/aspeed_scu.c         |  45 +++++++++++-
 hw/misc/aspeed_sdmc.c        |   1 +
 include/hw/arm/ast2400.h     |   5 ++
 include/hw/misc/aspeed_scu.h | 165 ++++++++++++++++++++++++++++++++++++++++++
 8 files changed, 397 insertions(+), 110 deletions(-)
 create mode 100644 hw/arm/aspeed.c
 delete mode 100644 hw/arm/palmetto-bmc.c


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