[U-Boot] [PATCH v2 0/13] dm: Implement driver model support in SPL

Simon Glass
2014-10-23T19:15:57Z

Now that driver model operations prior to relocation, the remaining
area where it does not work is SPL. This series enables this.

Since SPL is quite memory-constrained, code and data size need to be
kept as small as possible. This series includes a few changes to help
with this:

- Small and simple malloc() implementation
- Dropping device removal features
- Dropping stdio features
- Dropping driver model warnings

With these the code size impact of driver model is small, around 2-3KB.
Data usage is typically 200-300 bytes. In many cases this can squeeze
into the available SPL RAM space.

This requires a revert of the SPL global_data revert (commit 1ee30ae).
I believe that is planned for early in this merge window. We need that
revert undone to be able to support the simple malloc in SPL on ARM.

This series is available at u-boot-dm branch 'spl-working'.

Changes in v2:
- Correct the Makefile condition for simple_malloc
- Rebase on top of the SPI series
- Rebase to master

Simon Glass (13):
dm: dts: Move omap device tree includes to correct place
dm: Split the simple malloc() implementation into its own file
dm: arm: spl: Allow simple malloc() in SPL
dm: spl: Make simple malloc() available when enabled
dm: spl: Allow driver model to be used
dm: Allow device removal features to be dropped
dm: Allow stdio registration to be dropped
dm: Disable dm_warn() in SPL
dm: tegra: Add platform data for the SPL uart
dm: tegra: Add platform data for the GPIO driver
dm: arm: spl: Make driver model linker lists available
dm: tegra: Enable driver model in SPL and adjust the GPIO driver
dm: Update documentation to include CONFIG_DM... options

README | 119 +++++++++++++
arch/arm/cpu/u-boot-spl.lds | 7 +
arch/arm/dts/dt-bindings/gpio/gpio.h | 15 --
arch/arm/lib/crt0.S | 2 +-
board/nvidia/common/board.c | 8 +
board/nvidia/seaboard/seaboard.c | 4 +-
common/Makefile | 3 +
common/board_r.c | 3 +-
common/dlmalloc.c | 19 +--
common/malloc_simple.c | 38 +++++
common/spl/spl.c | 16 +-
doc/driver-model/README.txt | 44 +++--
drivers/core/Makefile | 3 +-
drivers/core/device-remove.c | 187 +++++++++++++++++++++
drivers/core/device.c | 168 ------------------
drivers/gpio/Makefile | 4 +
drivers/gpio/tegra_gpio.c | 27 ++-
drivers/serial/serial-uclass.c | 8 +-
drivers/serial/serial_tegra.c | 16 ++
include/asm-generic/global_data.h | 1 +
include/config_defaults.h | 6 +
include/configs/tegra-common.h | 12 +-
include/dm/device-internal.h | 10 ++
include/dm/util.h | 6 +
.../dts => include}/dt-bindings/pinctrl/am33xx.h | 0
.../arm/dts => include}/dt-bindings/pinctrl/omap.h | 0
include/malloc.h | 60 ++++---
scripts/Makefile.spl | 1 +
28 files changed, 522 insertions(+), 265 deletions(-)
delete mode 100644 arch/arm/dts/dt-bindings/gpio/gpio.h
create mode 100644 common/malloc_simple.c
create mode 100644 drivers/core/device-remove.c
rename {arch/arm/dts => include}/dt-bindings/pinctrl/am33xx.h (100%)
rename {arch/arm/dts => include}/dt-bindings/pinctrl/omap.h (100%)

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2.1.0.rc2.206.gedb03e5