Commit graph

15495 commits

Author SHA1 Message Date
Philippe Reynes
938f10b7f6 dt: bcm63158: add gpio controller
Add 8 gpio controllers in the bcm63158 device tree.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
2019-04-12 17:32:51 +02:00
Philippe Reynes
2629128572 gpio: do not include <asm/arch/gpio.h> on ARCH_BCM63158
As no gpio.h is defined for this architecture, to avoid
a compilation failure, do not include <asm/arch/gpio.h>
for arch bcm63158.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
2019-04-12 17:32:51 +02:00
Philippe Reynes
396fff8da2 dt: bcm968580xref: enable gpio controller
Enable all the gpio controllers in the device tree
of the board bcm968580xref.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
2019-04-12 17:32:51 +02:00
Philippe Reynes
9575c7ebc8 dt: bcm6858: add gpio controller
Add 8 gpio controllers in the bcm6858 device tree.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
2019-04-12 17:32:51 +02:00
Philippe Reynes
d96e7ed802 gpio: do not include <asm/arch/gpio.h> on ARCH_BCM6858
As no gpio.h is defined for this architecture, to avoid
compilation failure, do not include <asm/arch/gpio.h> for
arch bcm6858.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
2019-04-12 17:32:51 +02:00
Philippe Reynes
f1ed3cfc53 dt: bcm968380gerg: enable gpio controller
Enable the gpio controllers in the device tree
of the board bcm968380gerg.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2019-04-12 17:32:51 +02:00
Philippe Reynes
ce171053a8 dt: bcm6838: add gpio controller
Add gpio controllers in bcm6838 device tree.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2019-04-12 17:32:51 +02:00
Rosy Song
61290fb52c mips: add initial support for qca956x referenced board
QCA9563 is CPU used on AP152 board :

    Clock speed : 750 MHz ,
    Arch :  Mips 74Kc,
    Eth : SGMII interface,
    MIMO config : 3 * 3 450M,
    2 * USB 2.0,

Signed-off-by: Rosy Song <rosysong@rosinson.com>

Changes for v2:
   - coding style cleanup
   - remove ununsed flash chip in defconfig
   - enable automatic icache / dcache size in defconfig

Changes for v3:
   - add detailed information for qca956x in commit message

Changes for v4:
   - remove pre-configured network settings in ap152.h

Changes for v5:
   - coding style cleanup
2019-04-12 17:32:50 +02:00
Rosy Song
fda1bb0574 mips: fix erros on registers macros of pll-ddr-config1-nfrac for QCA956X
See details in chapter 8.6.2 and 8.6.4 (page 140-141) of qca9563 datasheet,

   NFRAC[17:0]

So the mask of [17:5] is 0x1fff not 0x3fff.

Signed-off-by: Rosy Song <rosysong@rosinson.com>

Changes for v2-v3:
   - add more information for this commit

Changes for v4-v5:
   - coding style cleanup
2019-04-12 17:32:50 +02:00
Horatiu Vultur
e515166636 bootm: mips: Remove boot_reloc_ramdisk
Remove the function boot_reloc_ramdisk in the file arch/mips/lib/bootm
because it is relocating again the ramdisk. The function do_bootm_states()
already relocates the ramdisk even if it is a legacy uImage or a FIT image.

The relocation in the function do_bootm_states() was introduce in the
commit c2e7e72bb9 ("bootm: relocate ramdisk
if CONFIG_SYS_BOOT_RAMDISK_HIGH set")

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2019-04-12 17:32:50 +02:00
Stefan Roese
eacbdd64cc mips: mt76xx: gardena-smart-gateway: Correct spelling of GARDENA
This patch changes Gardena to the correct GARDENA spelling. Also the
platform name is "GARDENA smart Gateway". This patch changes the
incorrect occurrances.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2019-04-12 17:32:50 +02:00
Rosy Song
395e2d43bd mips: add ethernet support for qca953x referenced boards
Signed-off-by: Rosy Song <rosysong@rosinson.com>
2019-04-12 17:32:50 +02:00
Tom Rini
f95fdf237d Merge branch 'master' of git://git.denx.de/u-boot-sh
- Various rmobile fixes
2019-04-11 14:29:22 -04:00
Marek Vasut
81abfa68f1 ARM: dts: rmobile: Enable USB on E2 Alt
The E2 Alt board has two USB ports, add missing DT nodes to make the
USB available.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09 18:19:10 +02:00
Marek Vasut
317d13ac63 ARM: dts: rmobile: Synchronize Gen3 DTs with Linux 5.0
Synchronize R-Car Gen3 device trees with Linux 5.0,
commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09 18:19:10 +02:00
Marek Vasut
3abd800eb9 ARM: dts: rmobile: Synchronize Gen2 DTs with Linux 5.0
Synchronize R-Car Gen2 device trees with Linux 5.0,
commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09 18:19:10 +02:00
Marek Vasut
b414ab70cd ARM: dts: rmobile: Import R8A77965 M3NULCB DTs
Import R8A77965 M3N ULCB device trees from Linux 5.0 ,
commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09 18:19:10 +02:00
Marek Vasut
c6435c317a pinctrl: renesas: Add R8A77965 pin control tables
Add pin control tables for R8A77965 from Linux 5.0 .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09 18:19:10 +02:00
Marek Vasut
933143997b clk: renesas: Add R8A77965 clock tables
Add clock tables for R8A77965 from Linux 5.0 , except for the
crit, R and Z clock, which are neither used nor supported by
the U-Boot clock framework yet.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09 18:19:10 +02:00
Marek Vasut
ce417a2f23 ARM: rmobile: Add dedicated R8A77965 SoC support
Add dedicated entry for R8A77965 M3N SoC.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09 18:19:10 +02:00
Marek Vasut
bdafee778d ARM: rmobile: Enable multi-DTB fit LZO compression
Enable LZO compression of the multi-DTB fitImages, since the U-Boot
with multiple DTs enabled is becoming quite large and the DTs can
be well compressed. The LZO compression saves almost 200 kiB on the
Salvator-X(S) and ULCB targets.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09 18:19:10 +02:00
Marek Vasut
4fa8375ffe ARM: renesas: Save boot parameters passed in by ATF
The ATF can pass additional information via the first four registers,
x0...x3. The R-Car Gen3 with mainline ATF, register x1 contains pointer
to a device tree with platform information. Save these registers for
future use.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09 18:19:09 +02:00
Tom Rini
5a451f11c8 First set of u-boot-atmel features and fixes for 2019.07 cycle
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Merge tag 'u-boot-atmel-2019.07-a' of git://git.denx.de/u-boot-atmel

First set of u-boot-atmel features and fixes for 2019.07 cycle
2019-04-09 12:10:40 -04:00
Stefan Roese
a71e2f933b arm: at91: Add gardena-gateway-at91sam support
The GARDENA smart Gateway boards are equipped with an Atmel / Microchip
AT91SAM9G25 SoC and with 128 MiB of RAM and 256 MiB of NAND storage.
This patch adds support for this board including SPL support. Therefore
the AT91Boostrap is not needed on this platform any more.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas@biessmann.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2019-04-09 09:28:50 +03:00
Stefan Roese
d4c8873f93 arm: at91: at91sam9x5.dtsi: Add watchdog handle
This makes it possible to reference the watchdog DT node via "&watchdog"
from board dts files.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas@biessmann.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2019-04-09 09:28:50 +03:00
Stefan Roese
da8a771241 arm: at91: arm926ejs/u-boot-spl.lds: Add _image_binary_end to SPL lds
This patch adds _image_binary_end to the SPL linker script. This will be
used be the upcoming GARDENA AT91SAM based platform, which uses DT in
SPL and configures CONFIGURE_SPL_SEPARATE_BSS.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas@biessmann.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2019-04-09 09:28:50 +03:00
Stefan Roese
256c2ff0cc arm: at91: Enable watchdog support
This patch enables and starts the watchdog on the AT91 platform if
configured. The WD timeout value is read in the AT91 WD device driver
from the DT, using the "timeout-sec" DT property. If not provided in
the DT, the default value of 2 seconds is used.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas@biessmann.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
2019-04-09 09:28:50 +03:00
Stefan Roese
ce4d04af99 arm: at91: spl_at91.c: Call spl_early_init() if OF_CONTROL is enabled
This patch adds a call to spl_early_init() to board_init_f() which is
needed when CONFIG_SPL_OF_CONTROL is configured. This is necessary for
the early SPL setup including the DTB setup for later usage.

Please note that this call might also be needed for non SPL_OF_CONTROL
board, like the smartweb target. But smartweb fails to build with this
call because its binary grows too big. So I disabled it for these kind
of targets for now.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas@biessmann.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Tested on the taurus board:
Tested-by: Heiko Schocher <hs@denx.de>
2019-04-09 09:28:50 +03:00
Stefan Roese
e6a2769360 arm: at91: Makefile: Compile lowlevel_init only when really necessary
Make sure that lowlevel_init is not compiled when
CONFIG_SKIP_LOWLEVEL_INIT_ONLY is configured.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Andreas Bießmann <andreas@biessmann.org>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Tested on the taurus board:
Tested-by: Heiko Schocher <hs@denx.de>
2019-04-09 09:28:50 +03:00
Ilko Iliev
d9bd42900c board: pm9g45: Migrate to CONFIG_DM
Migrate the following options to CONFIG_DM:
  CONFIG_DM_GPIO
  CONFIG_DM_MMC
  CONFIG_DM_ETH
  CONFIG_DM_SERIAL
  CONFIG_DM_USB

Signed-off-by: Ilko Iliev <iliev@ronetix.at>
2019-04-09 09:28:50 +03:00
Alexander Dahl
7dee1848d7 ARM: at91: sama5d2: Wrap cpu detection to fix macb driver
When introducing the SAMA5D27 SoCs, the SAMA5D2 series got an additional
chip id. The check if the cpu is sama5d2 was changed from a preprocessor
definition (inlining a call to 'get_chip_id()') to a C function,
probably to not call get_chip_id twice?

That however broke a check in the macb ethernet driver. That driver is
more generic and also used for other platforms. I suppose this solution
was implemented to use it in 'gem_is_gigabit_capable()', without having
to stricly depend on the at91 platform:

	#ifndef cpu_is_sama5d2
	#define cpu_is_sama5d2() 0
	#endif

That only works as long as cpu_is_sama5d2 is a preprocessor definition.
(The same is still true for sama5d4 by the way.) So this is a straight
forward fix for the workaround.

The not working check on the SAMA5D2 CPU lead to an issue on a custom
board with a LAN8720A ethernet phy connected to the SoC:

	=> dhcp
	ethernet@f8008000: PHY present at 1
	ethernet@f8008000: Starting autonegotiation...
	ethernet@f8008000: Autonegotiation complete
	ethernet@f8008000: link up, 1000Mbps full-duplex (lpa: 0xffff)
	BOOTP broadcast 1
	BOOTP broadcast 2
	BOOTP broadcast 3
	BOOTP broadcast 4
	BOOTP broadcast 5
	BOOTP broadcast 6
	BOOTP broadcast 7
	BOOTP broadcast 8
	BOOTP broadcast 9
	BOOTP broadcast 10
	BOOTP broadcast 11
	BOOTP broadcast 12
	BOOTP broadcast 13
	BOOTP broadcast 14
	BOOTP broadcast 15
	BOOTP broadcast 16
	BOOTP broadcast 17

	Retry time exceeded; starting again

Notice the wrong reported link speed, although both SoC and phy only
support 100 MBit/s!

The real issue on reliably detecting the features of that cadence
ethernet mac IP block, is probably more complicated, though.

Fixes: 245cbc583d ("ARM: at91: Get the Chip ID of SAMA5D2 SiP")
Signed-off-by: Alexander Dahl <ada@thorsis.com>
2019-04-09 09:28:50 +03:00
Tom Rini
ffb269ab30 Merge git://git.denx.de/u-boot-riscv
- RISC-V arch support SMP.
- Support Andestech's PLIC and PLMT.
- qemu, fu54e, ae350 boards enable SMP by default.
- Fix CONFIG_DEFAULT_DEVICE_TREE failure.
2019-04-08 22:32:11 -04:00
Jagan Teki
85c3d46322 arm: sunxi: Enable DM_MMC on required SoCs
Enabling DM_MMC is forcing CONFIG_BLK=y so if any board which uses
SCSI must need to enable DM_SCSI otherwise SCSI reads on that particular
target making invalid reading to the disk drive.

Allwinner platform do support SCSI on A10, A20 and R40 SoC's out of
these only A10 have DM_SCSI enabled. So enabling DM_MMC on A20, R40
would eventually end-up with scsi disk read failures like [1]

So, enable DM_MMC in all places of respective SoC's instead of enabling
them globally to Allwinner platform.

Now, DM_MMC is enabled in Allwinner SoC's except A20 and R40.

[1] https://lists.denx.de/pipermail/u-boot/2019-April/364057.html

Reported-by: Pablo Sebastián Greco <pgreco@centosproject.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2019-04-08 16:35:15 -04:00
Tom Rini
c48b07a9fd - i.MX8QXP-MEK ethernet fix
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Merge tag 'fixes-for-2019.04-rc4' of git://git.denx.de/u-boot-staging

- i.MX8QXP-MEK ethernet fix
2019-04-08 10:11:29 -04:00
Andrejs Cainikovs
e82fa10b3e dts: imx8qxp-mek: Add PHY post reset delay
PHY cannot be detected unless we wait about 150 ms.

Signed-off-by: Andrejs Cainikovs <andrejs.cainikovs@netmodule.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2019-04-08 15:24:39 +02:00
Stefan Roese
ccd063e981 watchdog: Move watchdog_dev to data section (BSS may not be cleared)
This patch moves all instances of static "watchdog_dev" declarations to
the "data" section. This may be needed, as the BSS may not be cleared
in the early U-Boot phase, where watchdog_reset() is already beeing
called. This may result in incorrect pointer access, as the check to
"!watchdog_dev" in watchdog_reset() may not be true and the function
may continue to run.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: "Marek Behún" <marek.behun@nic.cz>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Tested-by: Michal Simek <michal.simek@xilinx.com> (on zcu100)
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
2019-04-08 09:21:39 -04:00
Rick Chen
48b90d9db5 riscv: dts: fix CONFIG_DEFAULT_DEVICE_TREE failure
It occurs since commit 27cb7300ff
("Ensure device tree DTS is compiled").

More details can refer to
89c2b5c020
ARM: fix arch/arm/dts/Makefile

Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-04-08 09:46:00 +08:00
Rick Chen
a1ce531ab2 riscv: dts: ae350 support SMP
Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-04-08 09:45:08 +08:00
Rick Chen
dda00ae4ef riscv: ax25: Andes specific cache shall only support in M-mode
Limit the cache configuration only can be supported in M mode.
It can not be manipulated in S mode.

Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-04-08 09:45:08 +08:00
Rick Chen
8848474c5e riscv: ax25: Add platform-specific Kconfig options
Add ax25 RISC-V platform-specific Kconfig options,
to include CPU and timer drivers. Also disable
ATCPIT100 SoC timer and replace by PLMT.

Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-04-08 09:45:08 +08:00
Rick Chen
a1f24875c3 riscv: Add a SYSCON driver for Andestech's PLMT
The platform-Level Machine Timer (PLMT) block
holds memory-mapped mtime register associated
with timer tick.

This driver implements the riscv_get_time() which
is required by the generic RISC-V timer driver.

Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-04-08 09:45:08 +08:00
Rick Chen
0d389468e2 riscv: Add a SYSCON driver for Andestech's PLIC
The Platform-Level Interrupt Controller (PLIC)
block holds memory-mapped claim and pending registers
associated with software interrupt. It is required
for handling IPI.

Signed-off-by: Rick Chen <rick@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-04-08 09:45:08 +08:00
Lukas Auer
8ac39e2974 riscv: hang if relocation of secondary harts fails
Print an error message and hang if smp_call_function() returns an error,
indicating that relocation of the secondary harts has failed.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-04-08 09:44:26 +08:00
Lukas Auer
e043240252 riscv: do not rely on hart ID passed by previous boot stage
RISC-V U-Boot expects the hart ID to be passed to it via register a0 by
the previous boot stage. Machine mode firmware such as BBL and OpenSBI
do this when starting their payload (U-Boot) in supervisor mode. If
U-Boot is running in machine mode, this task must be handled by the boot
ROM. Explicitly populate register a0 with the hart ID from the mhartid
CSR to avoid possible problems on RISC-V processors with a boot ROM that
does not handle this task.

Suggested-by: Rick Chen <rick@andestech.com>
Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Tested-by: Rick Chen <rick@andestech.com>
2019-04-08 09:44:26 +08:00
Lukas Auer
f28ad250e6 riscv: boot images passed to bootm on all harts
Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-08 09:44:26 +08:00
Lukas Auer
3dea63c844 riscv: add support for multi-hart systems
On RISC-V, all harts boot independently. To be able to run on a
multi-hart system, U-Boot must be extended with the functionality to
manage all harts in the system. All harts entering U-Boot are registered
in the available_harts mask stored in global data. A hart lottery system
as used in the Linux kernel selects the hart U-Boot runs on. All other
harts are halted. U-Boot can delegate functions to them using
smp_call_function().

Every hart has a valid pointer to the global data structure and a 8KiB
stack by default. The stack size is set with CONFIG_STACK_SIZE_SHIFT.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-08 09:44:26 +08:00
Lukas Auer
1446b26f76 riscv: save hart ID in register tp instead of s0
The hart ID passed by the previous boot stage is currently stored in
register s0. If we divert the control flow inside a function, which is
required as part of multi-hart support, the function epilog may not be
called, clobbering register s0. Save the hart ID in the unallocatable
register tp instead to protect the hart ID.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-04-08 09:44:26 +08:00
Lukas Auer
2503ccc55f riscv: delay initialization of caches and debug UART
Move the initialization of the caches and the debug UART until after
board_init_f_init_reserve. This is in preparation for SMP support, where
code prior to this point will be executed by all harts. This ensures
that initialization will only be performed once on the main hart running
U-Boot.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-08 09:44:26 +08:00
Lukas Auer
f152febb2a riscv: implement IPI platform functions using SBI
The supervisor binary interface (SBI) provides the necessary functions
to implement the platform IPI functions riscv_send_ipi() and
riscv_clear_ipi(). Use it to implement them.

This adds support for inter-processor interrupts (IPIs) on RISC-V CPUs
running in supervisor mode. Support for machine mode is already
available for CPUs that include the SiFive CLINT.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2019-04-08 09:44:26 +08:00
Lukas Auer
34a0626fc3 riscv: import the supervisor binary interface header file
Import the supervisor binary interface (SBI) header file from Linux
(arch/riscv/include/asm/sbi.h). The last change to it was in commit
6d60b6ee0c97 ("RISC-V: Device, timer, IRQs, and the SBI").

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
2019-04-08 09:44:25 +08:00