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2019-04-12ARM: kirkwood: remove kw_config_adr_windowsChris Packham
Now that kirkwood is using the mvebu mbus this function is no longer needed. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Signed-off-by: Stefan Roese <sr@denx.de>
2019-04-12ARM: kirkwood: switch to using mvebu mbusChris Packham
The mvebu mbus code already had most of the support required for kirkwood. The only difference is that unlike the other mvebu targets kirkwood doesn't have a bridge control block so the code related to managing that needs to be compiled out. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Signed-off-by: Stefan Roese <sr@denx.de>
2019-04-12ARM: kirkwood: remove KW_DEFADR_PCI_IO_REMAPChris Packham
KW_DEFADR_PCI_IO_REMAP has the same value as KW_DEFADR_PCI_IO and is only used to set up a 1:1 mapping. Remove it and update the mapping to use KW_DEFADR_PCI_IO. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Signed-off-by: Stefan Roese <sr@denx.de>
2019-04-12ARM: kirkwood: rename KW_CPU_WIN_BASE to MVEBU_CPU_WIN_BASEChris Packham
This will allow the kirkwood platforms to use more common code with the other mvebu SoCs. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Signed-off-by: Stefan Roese <sr@denx.de>
2019-04-12arm: mvebu: x530: Enable watchdog in SPL and U-BootChris Packham
Enable the hardware watchdog to guard against system lock ups when running in the SPL or U-Boot. Stop the watchdog just before booting so that the OS can re-enable it if needed. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Signed-off-by: Stefan Roese <sr@denx.de>
2019-04-12arm: sync armada-xp dts files from Linux 5.0Chris Packham
Bring in the Armada 370/XP dts/dtsi files from Linux. As U-Boot hasn't got the new NAND driver the updating binding has not been included. Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Signed-off-by: Stefan Roese <sr@denx.de>
2019-04-11arm64: dts: ti: k3-am65: add mcu navss nodesGrygorii Strashko
Add DT node for MCU NAVSS its components to get DMA working on AM654 SoC. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-04-11soc: keystone: Merge into ti specific directoryVignesh R
Merge drivers/soc/keystone/ into drivers/soc/ti/ and convert CONFIG_TI_KEYSTONE_SERDES into Kconfig. Signed-off-by: Vignesh R <vigneshr@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2019-04-11firmware: ti_sci: Add support for NAVSS resource managementGrygorii Strashko
Texas Instruments' System Control Interface (TI-SCI) Message Protocol abstracts management of NAVSS resources, like PSI-L pairing and unpairing, UDMAP tx/rx/flow configuration and Rings. This patch adds support for requesting and configuring such resources from TI-SCI firmware. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Vignesh R <vigneshr@ti.com>
2019-04-11Merge branch 'master' of git://git.denx.de/u-boot-shTom Rini
- Various rmobile fixes
2019-04-11DTS: imx53: Add imx53-kp-u-boot.dtsi file with u-boot specific propertyLukasz Majewski
This file adds the "u-boot,i2c-transaction-bytes" to mc34708 PMIC. Signed-off-by: Lukasz Majewski <lukma@denx.de>
2019-04-10sunxi: Allow booting from 128KB SD/eMMC offsetAndre Przywara
On modern Allwinner SoCs (tested: H2+, A64, H5, H6) the BootROM can actually load the SPL also from sector 256 (128KB) of an SD card or eMMC chip. For more details, see [1]. In this case the boot source indicator (written at offset 0x28 of SRAM A1) has bit 4 set, so it's 0x10 for SD card and 0x12 for eMMC. Add those new values to the existing boot source check to allow booting the SPL from those "high" disk offsets as well. For this to work, the value of CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR needs to be adjusted, for instance to 0x140 (right after the high SPL). Doing this dynamically sounds desirable, but looks nasty to implement. [1] https://groups.google.com/forum/#!topic/linux-sunxi/MaiijyaAFjk Signed-off-by: Andre Przywara <andre.przywara@arm.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
2019-04-10arm: sunxi: Enable DRAM ODT by default on H3/H5Paul Kocialkowski
Most of the boards we support with H3/H5 enable DRAM on-die termination, which is consistent with the high DRAM clocks that are used. Make it the default (like it's done for other similar platforms) instead of defining it in each defconfig. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
2019-04-10arm: sunxi: Set the default DRAM ZQ value to 3881979 on H3/H5Paul Kocialkowski
Most H3/H5 boards we support have the DRAM ZQ value set to 3881979, which is also consistent with the default set for the R40. Make this value the default on H3/H5 instead of 123. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
2019-04-10arm: sunxi: Allow per-platform DRAM ZQ configuration on sun8iPaul Kocialkowski
A few sun8i platforms define specific default DRAM ZQ values, but they are not taken in account because of MACH_SUN8I being used for the 123 default first. Replace MACH_SUN8I with the list of platforms that don't have specific DRAM ZQ values, to avoid overwriting the default for those that do. Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Acked-by: Jagan Teki <jagan@openedev.com>
2019-04-10sunxi: dram_sun8i: Fix A33 memory initializationMichael Trimarchi
While the exact problem is not known, based on discussion between Philipp Tomsich and André Przywara it is guessed that exit self-refresh timing is not set with correct value. There may be implicit enter or exit Self-Refresh anywhere as part of some training phase. In ZynqMP register guide [1], which is close to the various Allwinner DRAM controllers, tXSDLL is bits [14:8], while the non-DLL tXS is bits [6:0]: Self refresh exit delay. So it could be safely increased and it only affects the time after the self-refresh “exit”, which happens only after (re-)initialisation. There was no document for cpu in question so based on oscilloscope readings [2][3] and observed result by comparing allwinner architecture. So set it same as Allwinner H5 silicon. Before this patch, failure rate of was 7%. This was tested on A33 allwinner cpu, dual rank connection connected with two MT41K512M16HA-125:A memory model. Memory is configured as DDR3 1.5V And also this is tested in A33-OLinuXino dev board. [1] https://www.xilinx.com/html_docs/registers/ug1087/ddrc___dramtmg8.html [2] https://ibb.co/R70zmyS [3] https://ibb.co/HVVCGQ8 Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com> Signed-off-by: Shyam Saini <shyam.saini@amarulasolutions.com> Acked-by: Jagan Teki <jagan@openedev.com>
2019-04-10sun50i: a64: Add Oceanic 5205 5inMFD initial supportJagan Teki
Oceanic 5205 5inMFD is a 5 inch Multi function display baseboard designed to mount SoPine SOM. Key features: - Allwinner A64 Cortex-A53 - Mali-400MP2 GPU - AXP803 PMIC - 2GB DDR3 RAM - SD Slot - SPI-NOR flash - EMAC, RTL8211E - MCP2515 CAN - 4-lane, MIPI-DSI panel - Goodix 911 CTP - USB Host - 12V DC power supply Linux commit details about the sun50i-a64-oceanic-5205-5inmfd.dts sync: "arm64: allwinner: a64: Add Oceanic 5205 5inMFD initial support" (sha1: 00f7980a3bd53d12abc34f68146a8eed0e894248) Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2019-04-09ARM: dts: rmobile: Enable USB on E2 AltMarek Vasut
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>
2019-04-09ARM: dts: rmobile: Synchronize Gen3 DTs with Linux 5.0Marek Vasut
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>
2019-04-09ARM: dts: rmobile: Synchronize Gen2 DTs with Linux 5.0Marek Vasut
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>
2019-04-09ARM: dts: rmobile: Import R8A77965 M3NULCB DTsMarek Vasut
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>
2019-04-09pinctrl: renesas: Add R8A77965 pin control tablesMarek Vasut
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>
2019-04-09clk: renesas: Add R8A77965 clock tablesMarek Vasut
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>
2019-04-09ARM: rmobile: Add dedicated R8A77965 SoC supportMarek Vasut
Add dedicated entry for R8A77965 M3N SoC. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2019-04-09ARM: rmobile: Enable multi-DTB fit LZO compressionMarek Vasut
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>
2019-04-09ARM: renesas: Save boot parameters passed in by ATFMarek Vasut
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>
2019-04-09Merge tag 'u-boot-atmel-2019.07-a' of git://git.denx.de/u-boot-atmelTom Rini
First set of u-boot-atmel features and fixes for 2019.07 cycle
2019-04-09arm: at91: Add gardena-gateway-at91sam supportStefan Roese
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>
2019-04-09arm: at91: at91sam9x5.dtsi: Add watchdog handleStefan Roese
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>
2019-04-09arm: at91: arm926ejs/u-boot-spl.lds: Add _image_binary_end to SPL ldsStefan Roese
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>
2019-04-09arm: at91: Enable watchdog supportStefan Roese
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>
2019-04-09arm: at91: spl_at91.c: Call spl_early_init() if OF_CONTROL is enabledStefan Roese
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>
2019-04-09arm: at91: Makefile: Compile lowlevel_init only when really necessaryStefan Roese
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>
2019-04-09board: pm9g45: Migrate to CONFIG_DMIlko Iliev
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>
2019-04-09ARM: at91: sama5d2: Wrap cpu detection to fix macb driverAlexander Dahl
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>
2019-04-08Merge git://git.denx.de/u-boot-riscvTom Rini
- 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.
2019-04-08arm: sunxi: Enable DM_MMC on required SoCsJagan Teki
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>
2019-04-08Merge tag 'fixes-for-2019.04-rc4' of git://git.denx.de/u-boot-stagingTom Rini
- i.MX8QXP-MEK ethernet fix
2019-04-08dts: imx8qxp-mek: Add PHY post reset delayAndrejs Cainikovs
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>
2019-04-08watchdog: Move watchdog_dev to data section (BSS may not be cleared)Stefan Roese
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>
2019-04-08riscv: dts: fix CONFIG_DEFAULT_DEVICE_TREE failureRick Chen
It occurs since commit 27cb7300ffda ("Ensure device tree DTS is compiled"). More details can refer to 89c2b5c02049aea746b1edee0b4e1d8519dec2f4 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>
2019-04-08riscv: dts: ae350 support SMPRick Chen
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>
2019-04-08riscv: ax25: Andes specific cache shall only support in M-modeRick Chen
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>
2019-04-08riscv: ax25: Add platform-specific Kconfig optionsRick Chen
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>
2019-04-08riscv: Add a SYSCON driver for Andestech's PLMTRick Chen
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>
2019-04-08riscv: Add a SYSCON driver for Andestech's PLICRick Chen
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>
2019-04-08riscv: hang if relocation of secondary harts failsLukas Auer
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>
2019-04-08riscv: do not rely on hart ID passed by previous boot stageLukas Auer
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>
2019-04-08riscv: boot images passed to bootm on all hartsLukas Auer
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>
2019-04-08riscv: add support for multi-hart systemsLukas Auer
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>