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2018-12-03rpi: add 3 Model A+Jonathan Gray
Add Raspberry Pi 3 Model A+ to list of models, the revision code is 0xE according to the list on raspberrypi.org. Signed-off-by: Jonathan Gray <jsg@jsg.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-12-03rpi: add URL of official revision code listJonathan Gray
Replace various third party lists of Raspberry Pi revision codes in a comment with the list on raspberrypi.org. Signed-off-by: Jonathan Gray <jsg@jsg.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-09-10Remove <inttypes.h> includes and PRI* usages in printf() entirelyMasahiro Yamada
In int-ll64.h, we always use the following typedefs: typedef unsigned int u32; typedef unsigned long uintptr_t; typedef unsigned long long u64; This does not need to match to the compiler's <inttypes.h>. Do not include it. The use of PRI* makes the code super-ugly. You can simply use "l" for printing uintptr_t, "ll" for u64, and no modifier for u32. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-08net: Move enetaddr env access code to env config instead of net configAlex Kiernan
In order that we can use eth_env_* even when CONFIG_NET isn't set, move these functions to environment code from net code. This fixes failures such as: board/ti/am335x/built-in.o: In function `board_late_init': board/ti/am335x/board.c:752: undefined reference to `eth_env_set_enetaddr' u-boot/board/ti/am335x/board.c:766: undefined reference to `eth_env_set_enetaddr' which caters for use cases such as: commit f411b5cca48f ("board: am335x: Always set eth/eth1addr environment variable") when Ethernet is required in Linux, but not U-Boot. Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
2018-04-06rpi: Complete table of models with new revision code schemeJonathan Gray
In the model table for the new revision code encoding documented in https://www.raspberrypi.org/documentation/hardware/raspberrypi/revision-codes/README.md add the entries for old models with the new scheme and add CM3 which only appears in the new scheme. A device tree for CM3 is not currently upstreamed in linux. When that happens the name will likely have to be adjusted in the table. Signed-off-by: Jonathan Gray <jsg@jsg.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-04-05rpi: Add identifier for the new RPi3 B+Alexander Graf
The Raspberr Pi Foundation released a new RPi3 version which we want to detect as well, so we can enable ethernet on it and know the correct device tree file name. Add an identifier for it. Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28rpi: Remove runtime disabling support for serialAlexander Graf
We are switching to a model where our board file can directly fail probing of serial devices when they're not usable, so remove the current runtime hack we have. Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-28bcm283x: Add pinctrl driverAlexander Graf
The bcm283x family of SoCs have a GPIO controller that also acts as pinctrl controller. This patch introduces a new pinctrl driver that can actually properly mux devices into their device tree defined pin states and is now the primary owner of the gpio device. The previous GPIO driver gets moved into a subdevice of the pinctrl driver, bound to the same OF node. That way whenever a device asks for pinctrl support, it gets it automatically from the pinctrl driver and GPIO support is still available in the normal command line phase. Signed-off-by: Alexander Graf <agraf@suse.de>
2017-12-04add support for Raspberry Pi Zero WDmitry Korunov
Signed-off-by: Dmitry Korunov <dessel.k@gmail.com>
2017-08-16env: Rename getenv/_f() to env_get()Simon Glass
We are now using an env_ prefix for environment functions. Rename these two functions for consistency. Also add function comments in common.h. Quite a few places use getenv() in a condition context, provoking a warning from checkpatch. These are fixed up in this patch also. Suggested-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16env: Rename eth_setenv_enetaddr() to eth_env_set_enetaddr()Simon Glass
Rename this function for consistency with env_set(). Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16env: Rename common functions related to setenv()Simon Glass
We are now using an env_ prefix for environment functions. Rename these commonly used functions, for consistency. Also add function comments in common.h. Suggested-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
2017-08-16env: Rename setenv() to env_set()Simon Glass
We are now using an env_ prefix for environment functions. Rename setenv() for consistency. Also add function comments in common.h. Suggested-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-09Allow boards to initialize the DT at runtime.Alex Deymo
In some boards like the Raspberry Pi the initial bootloader will pass a DT to the kernel. When using U-Boot as such kernel, the board code in U-Boot should be able to provide U-Boot with this, already assembled device tree blob. This patch introduces a new config option CONFIG_OF_BOARD to use instead of CONFIG_OF_EMBED or CONFIG_OF_SEPARATE which will initialize the DT from a board-specific funtion instead of bundling one with U-Boot or as a separated file. This allows boards like the Raspberry Pi to reuse the device tree passed from the bootcode.bin and start.elf firmware files, including the run-time selected device tree overlays. Signed-off-by: Alex Deymo <deymo@google.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-09bcm2835_wdt: support for the BCM2835/2836 watchdogPaolo Pisati
Signed-off-by: Paolo Pisati <p.pisati@gmail.com>
2017-05-09arm: rpi: Add a TODO to move all messages into the msg handlerSimon Glass
The board code should all move into msg.c for consistency. Add a TODO for this. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-09dm: mmc: rpi: Convert Raspberry Pi to driver model for MMCSimon Glass
Convert the bcm2835 SDHCI driver over to support CONFIG_DM_MMC and move all boards over. There is no need to keep the old code since there are no other users. Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-09arm: rpi: Add a function to obtain the MMC clockSimon Glass
Move this code into the new message handler file. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-05-09arm: rpi: Add a file to handle messagesSimon Glass
The bcm283x chips provide a way for the ARM core to communicate with the graphics processor, which is in charge of many things. This is handled by way of a message prototcol. At present the code for sending message (and receiving a reply) is spread around U-Boot, primarily in the board file. This means that sending a message from a driver requires duplicating the code. Create a new message implementation with a function to support powering on a subsystem as a starting point. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-24rpi: Fix device tree path on ARM64Tuomas Tynkkynen
The directory structure of device tree files produced by the kernel's 'make dtbs_install' is different on ARM64, the RPi3 device tree file is in a 'broadcom' subdirectory there. Signed-off-by: Tuomas Tynkkynen <tuomas@tuxera.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2016-11-28bcm2835: Reserve the spin table in efi memory mapAlexander Graf
Firmware provides a spin table on the raspberry pi. This table shouldn't get overwritten by payloads, so we need to mark it as reserved. Signed-off-by: Alexander Graf <agraf@suse.de> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2016-11-28ARM: bcm283x: use OF_CONTROL for bcm283xFabian Vogt
This patch removes use of U_BOOT_DEVICE in board/raspberrypi/rpi/rpi.c, enables OF_CONTROL in the config and adjusts the rpi_*defconfig configs. Signed-off-by: Fabian Vogt <fvogt@suse.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-11-28board: rpi: move uart deactivation to board_initFabian Vogt
When using OF_CONTROL, the disabled value of the mini UART platdata gets reset after board_early_init_f. So move detection and disabling to board_init and remove board_early_init_f. This uses the first device using the mini uart driver, as this method works reliably with different device trees or even no device tree at all. Signed-off-by: Fabian Vogt <fvogt@suse.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-11-21rpi: passthrough of the firmware provided FDT blobCédric Schieli
Raspberry firmware used to pass a FDT blob at a fixed address (0x100), but this is not true anymore. The address now depends on both the memory size and the blob size [1]. If one wants to passthrough this FDT blob to the kernel, the most reliable way is to save its address from the r2/x0 register in the U-Boot entry point and expose it in a environment variable for further processing. This patch just does this: - save the provided address in the global variable fw_dtb_pointer - expose it in ${fdt_addr} if it points to a a valid FDT blob There are many different ways to use it. One can, for example, use the following script which will extract from the tree the command line built by the firmware, then hand over the blob to a previously loaded kernel: fdt addr ${fdt_addr} fdt get value bootargs /chosen bootargs bootz ${kernel_addr_r} - ${fdt_addr} Alternatively, users relying on sysboot/pxe can simply omit any FDT statement in their extlinux.conf file, U-Boot will automagically pick ${fdt_addr} and pass it to the kernel. [1] https://www.raspberrypi.org/forums//viewtopic.php?f=107&t=134018 Signed-off-by: Cédric Schieli <cschieli@gmail.com> Acked-by: Stephen Warren <swarren@nvidia.com>
2016-09-06serial: bcm283x_mu: Detect disabled serial deviceAlexander Graf
On the raspberry pi, you can disable the serial port to gain dynamic frequency scaling which can get handy at times. However, in such a configuration the serial controller gets its rx queue filled up with zero bytes which then happily get transmitted on to whoever calls getc() today. This patch adds detection logic for that case by checking whether the RX pin is mapped to GPIO15 and disables the mini uart if it is not mapped properly. That way we can leave the driver enabled in the tree and can determine during runtime whether serial is usable or not, having a single binary that allows for uart and non-uart operation. Signed-off-by: Alexander Graf <agraf@suse.de> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-15armv8: mmu: Add support of non-identical mappingYork Sun
Introduce virtual and physical addresses in the mapping table. This change have no impact on existing boards because they all use idential mapping. Signed-off-by: York Sun <york.sun@nxp.com>
2016-04-11ARM: add Raspberry Pi 3 64-bit configStephen Warren
On all Pis so far, the VC FW provides a short stub to set up the ARM CPU before entering the kernel (a/k/a U-Boot for us). This feature is not currently supported by the VC FW when booting in 64-bit mode. However, this feature will likely appear in the near future, and this U-Boot port assumes that such a feature is in place. Without that feature, or a temporary workaround described below, U-Boot will not boot. Once the VC FW does provide the ARM stub, u-boot.bin built for rpi_3 can be used drectly as kernel7.img, in the same way as any other RPi port. The following config.txt is required: # Fix mini UART input frequency, and setup/enable up the UART. # Without this option, U-Boot will not boot, even if you don't care # about the serial console. This option will always be required for # all RPi3 use-cases, unless the PL011 UART is used, which is not # yet supported by rpi_3* builds of U-Boot. enable_uart=1 # Boot in AArch64 (64-bit) mode. # It is possible that a future VC FW will remove the need for this # option, instead auto-setting 32-/64-bit mode based on the "kernel" # filename present on the SD card. arm_control=0x200 Prior to the VC FW providing the ARM boot stub, you can use the following steps to build an equivalent stub into the U-Boot binary: git clone https://github.com/swarren/rpi-3-aarch64-demo.git \ ../rpi-3-aarch64-demo (cd ../rpi-3-aarch64-demo && ./build.sh) Build U-Boot for rpi_3 in the usual way cat ../rpi-3-aarch64-demo/armstub64.bin u-boot.bin > u-boot.bin.stubbed Use u-boot.bin.stubbed as kernel7.img on the Pi SD card. In this case, the following additional entries are required in config.txt: # Tell the FW to load the kernel image at address 0, the reset vector. kernel_old=1 Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-04-01rpi: BCM2837 and Raspberry Pi 3 32-bit supportStephen Warren
The Raspberry Pi 3 contains a BCM2837 SoC. The BCM2837 is a BCM2836 with the CPU complex swapped out for a quad-core ARMv8. This can operate in 32- or 64-bit mode. 32-bit mode is the current default selected by the VideoCore firmware on the Raspberry Pi 3. This patch adds a 32-bit port of U-Boot for the Raspberry Pi 3. >From U-Boot's perspective, the only delta between the RPi 2 and RPi 3 is a change in usage of the SoC UARTs. On all previous Pis, the PL011 was the only UART in use. The Raspberry Pi 3 adds a Bluetooth module which uses a UART to connect to the SoC. By default, the PL011 is used for this purpose since it has larger FIFOs than the other "mini" UART. However, this can be configured via the VideoCore firmware's config.txt file. This patch hard-codes use of the mini UART in the RPi 3 port. If your system uses the PL011 UART for the console even on the RPi 3, please use the RPi 2 U-Boot port instead. A future change might determine which UART to use at run-time, thus allowing the RPi 2 and RPi 3 (32-bit) ports to be squashed together. The mini UART has some limitations. One externally visible issue in the BCM2837 integration is that the UART divides the SoC's "core clock" to generate the baud rate. The core clock is typically variable, and under control of the VideoCore firmware for thermal management reasons. If the VC FW does modify the core clock rate, UART communication will be corrupted since the baud rate will vary from the expected value. This was not an issue for the PL011 UART, since it is fed by a fixed 3MHz clock. To work around this, the VideoCore firmware can be told not to modify the SoC core clock. However, the only way this can happen and be thermally safe is to limit the core clock to a low/minimum frequency. This leaves performance on the table for use-cases that don't care about a UART console. Consequently, use of the mini UART console must be explicitly requested by entering the following line into config.txt: enable_uart=1 A recent version of the VC firmware is required to ensure that the mini UART is fully and correctly initialized by the VC FW; at least firmware.git 046effa13ebc "firmware: arm_loader: emmc clock depends on core clock See: https://github.com/raspberrypi/firmware/issues/572". Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-04-01rpi: add Raspberry Pi 3 board IDStephen Warren
This allows U-Boot to known the name of the board. The existing rpi_2_defconfig can operate correctly on the Raspberry Pi 3 in 32-bit mode /if/ you have configured the firmware to use the PL011 UART as the console UART (the default is the mini UART). This requires two things: a) config.txt should contain dtoverlay=pi3-miniuart-bt b) You should run the following to tell the VC FW to process DT when booting, and copy u-boot.bin.img (rather than u-boot.bin) to the SD card as the kernel image: path/to/kernel/scripts/mkknlimg --dtok u-boot.bin u-boot.bin.img This works as of firmware.git commit 046effa13ebc "firmware: arm_loader: emmc clock depends on core clock See: https://github.com/raspberrypi/firmware/issues/572". Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-04-01rpi: use constant "unknown board" DT filenameStephen Warren
To simplify support for new SoCs, just use a constant filename for the unknown case. In practice this case shouldn't be hit anyway, so the filename isn't relevant, and certainly doesn't need to differentiate between SoCs. If a user has an as-yet-unknown board, they can override this value in the environment anyway. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-03-27ARM: bcm283x: don't always define CONFIG_BCM2835Stephen Warren
Currently, CONFIG_BCM2835 is defined for all BCM283x builds and _BCM2836 is defined when building for that SoC. That means there isn't a single define that means "exactly BCM2835". This will complicate future patches where BCM2835-vs-anything-else needs to be determined simply. Modify the code to define one or the other of CONFIG_BCM2835/BCM2836 so future patches are simpler. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2016-03-22serial: pl01x: Add support for devices with the rate pre-configured.Eric Anholt
For Raspberry Pi, we had the input clock rate to the pl011 fixed in the rpi.c file, but it may be changed by firmware due to user changes to config.txt. Since the firmware always sets up the uart (default 115200 output unless the user changes it), we can just skip our own uart init to simplify the boot process and more reliably get serial output. Signed-off-by: Eric Anholt <eric@anholt.net> Reviewed-by: Tom Rini <trini@konsulko.com> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
2016-02-24rpi: set board serial number in environmentLubomir Rintel
Gets propagated into the device tree and then into /proc/cpuinfo where users often expect it. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>
2016-02-08rpi: set ethaddr as wellLubomir Rintel
Let's set "ethaddr" when we get the ethernet address too, so that fdt_fixup_ethernet() sets the address in the device tree and the Linux driver can pick it up. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
2016-02-08rpi: fix up Model B entriesLubomir Rintel
The P5 header was not present on "Model B" any board prior to Revision 2.0, there's no need for a separate device tree. Also, it looks like "rev2" is incorrectly used to only cover the 512MiB memory models; there also were 256MiB 2.0 boards. I don't have all of the boards to check this, I'm following this table: http://elinux.org/RPi_HardwareHistory#Board_Revision_History Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
2016-02-08rpi: link to another model number info sourceStephen Warren
This source has been blessed by Dom Cobley at the RPi Foundation, so seems like the best source to refer to. It's a superset of and consistent with the other sources. Cc: Lubomir Rintel <lkundrak@v3.sk> Cc: Eric Anholt <eric@anholt.net> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-12-05rpi: add support for Raspberry Pi ZeroStephen Warren
For U-Boot's purposes, at present all we care about is ensuring there's a model table entry. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-12-05rpi: fix revision scheme parsingStephen Warren
The RPi has two different schemes for encoding board revision values. When adding RPi 2 support, I thought that the conflicting type field values were to be interpreted based on bcm2835-vs-bcm2836. In fact, the scheme bit determines the encoding. The RPi Zero uses the bcm2835 yet uses the new encoding scheme. Fix the code to cater for this correctly. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-12-05rpi: get rid of BCM2835_BOARD_REV_* macrosStephen Warren
There are two numbering schemes for the RPi revision values; old and new scheme. The values within each scheme overlap. Hence, it doesn't make sense to have absolute/global names for the revision IDs. Get rid of the names and just use the raw revision/type values to set up the array of per-revision data. This change makes most sense when coupled with the next change. However, it's split out so that the mechanical cut/paste is separate from the logic changes for easier review and problem bisection. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-10-24ARM: rpi: Add CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG supportGuillaume GARDET
Add CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG support and enable it to set 'board_rev' and 'board_name' envs. 'board_rev' can be used in scripts to determine what board we are running on and 'board_name' for pretty printing. Signed-off-by: Guillaume GARDET <guillaume.gardet@free.fr> Cc: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2015-10-19ARM: rpi: add another revision of Raspberry Pi A+Lubomir Rintel
Seen this one in the wild. Is labelled "Raspberry Pi Model A+ V1.1, (C) Raspberry Pi 2014". A standard A+ board, much like the one with version 0x12, didn't notice any differencies. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
2015-09-11Move ALLOC_CACHE_ALIGN_BUFFER() to the new memalign.h headerSimon Glass
Now that we have a new header file for cache-aligned allocation, we should move the stack-based allocation macro there also. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-08-12ARM: bcm283x: Allocate all mailbox buffers cacheline alignedAlexander Stein
The mailbox buffer is required to be at least 16 bytes aligned, but for cache invalidation and/or flush it needs to be cacheline aligned. Use ALLOC_CACHE_ALIGN_BUFFER for all mailbox buffer allocations. Signed-off-by: Alexander Stein <alexanders83@web.de> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Tested-by: Stephen Warren <swarren@wwwdotorg.org>
2015-04-13ARM: rpi: add a couple more revision IDsStephen Warren
According to Gordon Henderson's WiringPi library, there are some more Pi revision IDs out there. Add support for them. http://git.drogon.net/?p=wiringPi;a=blob_plain;f=wiringPi/wiringPi.c;hb=5edd177112c99416f68ba3e8c6c4db6ed942e796 At least ID 0x13 is out in the wild: Reported-by: Chee-Yang Chau <cychau@gmail.com> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-03-24ARM: rpi: fix RPi1 board rev detection for warranty bitStephen Warren
Apparently the firmware's board rev response includes both the board revision and some other data even on the RPi1. In particular, the "warranty bit" is bit 24. We need to mask that out when looking up the board ID. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-02-21rpi: add support for Raspberry Pi 2 model BStephen Warren
USB doesn't seem to work yet; the controller detects the on-board Hub/ Ethernet device but can't read the descriptors from it. I haven't investigated yet. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-02-21bcm2835/rpi: add SPDX license tags for some filesStephen Warren
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2015-02-10lcd: dt: extract simplefb supportNikita Kiryanov
We now have api functions that can support compiling simplefb code as its own module. Since this code is not part of the display functionality, extract it to its own file. Raspberry Pi is updated to accommodate the changes. Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Bo Shen <voice.shen@atmel.com> Tested-by: Josh Wu <josh.wu@atmel.com> Cc: Simon Glass <sjg@chromium.org> Cc: Anatolij Gustschin <agust@denx.de> Cc: Stephen Warren <swarren@wwwdotorg.org>
2014-12-29ARM: rpi: consolidate board rev error checkingStephen Warren
Create a fake model table entry with default values, so we can error check the board rev value once when querying it from the firmware, rather than error-checking for invalid board rev values every time the model table is used. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>