This is (the hopefully final and bestest) v3 of a series that pulls in
enough of at91bootstrap to make barebox usable as first stage bootloader
for the SAMA5 family of AT91 SoCs.
Besides incorporating feedback on v2 (mainly multi-image support), I've also
reinstated code paths needed by the sama5d2, whose port I worked a bit on.
This patchset applies on top of v2 of "ARM: at91: misc fixes and
cleanup", which I sent out an hour ago. As with v2, it leaves
the user the option to select OFDEVICE for the first stage. I haven't
managed to get a small enough of-based barebox that still works though.
The included defconfig uses board code instead, which makes the MMC
first stage fit into 49K.
Changes since v2 <20190219172150.11901-1-a.fatoum@xxxxxxxxxxxxxx>:
- addressed Roland's feedback: commits now indicate where they
copy code from if any
- SoC-specific get_ddram_size and associated #ifdeffery was removed
as suggested by Sascha. This series was rebased on-top.
- lowlevel_clock was renamed to at91_pmc_ll because I like that
name more
- removed instances of IS_ENABLED in generic code for multi-image
support. One instance could be inferred from function argument,
the rest now accepts a flags parameter.
- reinstated sama5d2 specific SDRAM and PMC initialization code
as well as necessary register offset definitions
- added missing Atmel copyright/disclaimer in the evb's lowlevel.c
as requested by Roland. Other files have the Atmel copyright,
the disclaimer looks compatible with the newly added
LICENSES/BSD-1-Clause
- removed board code define for multi-image build support as per
Sascha's comment
- adjusted code to use the new MAX_PBL_IMAGE_SIZE for indicating
maximum first stage bootloader size
Changes since v1 <20190116174559.17416-1-a.fatoum@xxxxxxxxxxxxxx>:
- dropped removal of h32mx code, it was just touched by
ARM: at91: microchip-kz9477-evb: support first stage boot and might
be useful for future ports
- dropped removal of sama5d3_matrix.h, already mainline via
f722f2a12 ("ARM: at91: delete unused mach/sama5d3_matrix.h")
- added commit with BSD-1-Clause license text
- split the migration to the at91bootstrap header for SDRAM defines
into 3 separate commits for better comprehension as suggested by Sam
- arch-prefixed globally visible functions/defines
- copied over some helper functions from at91bootstrap for board init,
or moved them to headers, so board code can look more like at91bootstrap
board code
- moved some helper function into headers, so they can be used in
multiple boards in future
- replaced all __raw_{read,write}T with {read,write}T
- added separate entry point for first stage, like am335x does
- added build-time size check for first stage
- renamed _first_stage suffix to _bootstrap, for symmetry with
the other at91sam9261
- compressed the DTB
- added infrastructure for future device tree based first stage
- added documentation as suggested by Sam
- changed NAND partition layout in board code as suggested by Sascha
- stylistic fixes here and there
Ahmad Fatoum (15):
LICENSES: add BSD-1-Clause license
ARM: at91: import at91bootstrap's at91_ddrsdrc.h
ARM: at91: migrate at91sam9_ddrsdr.h to use at91bootstrap's
at91_ddrsdrc.h
ARM: at91: replace at91sam9_ddrsdr.h with at91bootstrap's
at91_ddrsdrc.h
ARM: at91: watchdog: implement at91_wdt_disable
ARM: at91: import lowlevel clock initialization from at91bootstrap
ARM: at91: import early_udelay from at91bootstrap
ARM: at91: import low level DDRAMC initialization code from
at91bootstrap
ARM: at91: import lowlevel dbgu UART init code from at91bootstrap
images: at91: differentiate between first and second stage images
ARM: at91: microchip-ksz9477-evb: use compressed DTB
ARM: dts: microchip-ksz9477-evb: add dummy first stage device tree
ARM: at91: microchip-ksz9477-evb: implement first stage
ARM: at91: microchip-ksz9477: provide board code fallback
doc: microchip-ksz9477-evb: add documentation
.../boards/at91/microchip-ksz9477-evb.rst | 38 +-
LICENSES/other/X11 | 28 +
LICENSES/preferred/BSD-1-Clause | 15 +
arch/arm/boards/at91sam9m10g45ek/lowlevel.c | 2 +-
arch/arm/boards/at91sam9m10ihd/lowlevel.c | 2 +-
arch/arm/boards/at91sam9n12ek/lowlevel.c | 2 +-
arch/arm/boards/at91sam9x5ek/lowlevel.c | 2 +-
.../arm/boards/microchip-ksz9477-evb/Makefile | 3 +
arch/arm/boards/microchip-ksz9477-evb/board.c | 127 +++++
.../boards/microchip-ksz9477-evb/lowlevel.c | 213 +++++++-
arch/arm/boards/pm9g45/lowlevel.c | 3 +-
arch/arm/boards/sama5d3_xplained/lowlevel.c | 2 +-
arch/arm/boards/sama5d3xek/lowlevel.c | 2 +-
arch/arm/boards/sama5d4_xplained/lowlevel.c | 2 +-
arch/arm/boards/sama5d4ek/lowlevel.c | 2 +-
...rochip_ksz9477_evb_bootstrap_mmc_defconfig | 24 +
arch/arm/dts/Makefile | 4 +-
.../at91-microchip-ksz9477-evb-boot-bin.dts | 13 +
arch/arm/mach-at91/Kconfig | 17 +-
arch/arm/mach-at91/Makefile | 3 +
arch/arm/mach-at91/at91_pmc_ll.c | 184 +++++++
arch/arm/mach-at91/at91sam9g45_devices.c | 2 +-
arch/arm/mach-at91/at91sam9g45_reset.S | 8 +-
arch/arm/mach-at91/at91sam9n12_devices.c | 2 +-
arch/arm/mach-at91/at91sam9x5_devices.c | 2 +-
arch/arm/mach-at91/ddramc.c | 507 ++++++++++++++++++
arch/arm/mach-at91/early_udelay.c | 56 ++
arch/arm/mach-at91/include/mach/at91_dbgu.h | 57 +-
.../arm/mach-at91/include/mach/at91_ddrsdrc.h | 332 ++++++++++++
arch/arm/mach-at91/include/mach/at91_pmc.h | 32 +-
arch/arm/mach-at91/include/mach/at91_pmc_ll.h | 89 +++
arch/arm/mach-at91/include/mach/at91_wdt.h | 16 +
.../mach-at91/include/mach/at91sam9_ddrsdr.h | 138 +----
arch/arm/mach-at91/include/mach/ddramc.h | 36 ++
.../arm/mach-at91/include/mach/early_udelay.h | 14 +
arch/arm/mach-at91/include/mach/sama5d3.h | 1 +
arch/arm/mach-at91/sama5d3_devices.c | 2 +-
arch/arm/mach-at91/sama5d4_devices.c | 2 +-
images/Makefile.at91 | 17 +-
39 files changed, 1835 insertions(+), 166 deletions(-)
create mode 100644 LICENSES/other/X11
create mode 100644 LICENSES/preferred/BSD-1-Clause
create mode 100644 arch/arm/boards/microchip-ksz9477-evb/board.c
create mode 100644 arch/arm/configs/microchip_ksz9477_evb_bootstrap_mmc_defconfig
create mode 100644 arch/arm/dts/at91-microchip-ksz9477-evb-boot-bin.dts
create mode 100644 arch/arm/mach-at91/at91_pmc_ll.c
create mode 100644 arch/arm/mach-at91/ddramc.c
create mode 100644 arch/arm/mach-at91/early_udelay.c
create mode 100644 arch/arm/mach-at91/include/mach/at91_ddrsdrc.h
create mode 100644 arch/arm/mach-at91/include/mach/at91_pmc_ll.h
create mode 100644 arch/arm/mach-at91/include/mach/ddramc.h
create mode 100644 arch/arm/mach-at91/include/mach/early_udelay.h
--
2.20.1
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