The ARM Juno boards in their -r1 and -r2 variants sport a PCIe
controller, which we configure already in board specific code to be ECAM
compliant. Hence we can just enable the generic ECAM driver to let
U-Boot use PCIe devices.
Add the respective options to the Juno defconfig to enable the PCI
framework and the generic ECAM driver, and initialise the driver upon
loading U-Boot.
Make some functions in the Juno PCIe init code static on the way.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Misspelling of SPDX-License-Identifier is rather fatal than other
general typos, so must be fixed.
This file spells SPDX-Licence-Identifier.
^
I also moved it to the very top of the file with // comment style.
Detected by grepping the source tree:
$ git grep --not -e SPDX-License-Identifier --and -e SPDX-
board/armltd/vexpress64/pcie.c: * SPDX-Licence-Identifier: GPL-2.0+
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Liviu Dudau <liviu.dudau@foss.arm.com>
Juno uses a 1:1 mapping between CPU and PCI addresses for IO. First,
that will trip devices that cannot use more than 16 bits of addresses
for IO, second it is un-necessary as the system can handle zero-based
PCI addresses just fine.
Change the mapping to start IO bus addresses from zero.
Signed-off-by: Liviu Dudau <Liviu.Dudau@foss.arm.com>
Only compile in PCIe support if the board really uses it. Provide
a __weak stub for the init function if e.g. FVP is being built.
Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
On a Juno r1 the PCI controller init routine outputs the rather boring
ATR entry information.
Do this only with DEBUG defined to avoid cluttering the user's
terminal.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Ryan Harkin <ryan.harkin@linaro.org>
Juno R1 has an XpressRICH3 PCIe host bridge that needs to be initialised
in order for the Linux kernel to be able to enumerate the bus. Add
support code here that enables the host bridge, trains the links and
sets up the Address Translation Tables.
Signed-off-by: Liviu Dudau <Liviu.Dudau@foss.arm.com>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
[trini: Always declare vexpress64_pcie_init and continue handling logic
inside the function]
Signed-off-by: Tom Rini <trini@konsulko.com>
