The SDHI nodes are missing features supported in upstream U-Boot,
like mode support properties. Pull the extras into U-Boot specific
DT until it hits mainline Linux, to make syncing of DTs easier.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
V2: Rebase on u-boot/master
Marek Vasut [Mon, 3 Dec 2018 19:55:01 +0000 (20:55 +0100)]
ARM: dts: rmobile: Extract SDHI extras on H3 and M3W ULCB
The SDHI nodes are missing features supported in upstream U-Boot,
like mode support properties. Pull the extras into U-Boot specific
DT until it hits mainline Linux, to make syncing of DTs easier.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
V2: Rebase on u-boot/master
Marek Vasut [Mon, 3 Dec 2018 19:48:16 +0000 (20:48 +0100)]
ARM: dts: rmobile: Extract CPLD node on H3 and M3W ULCB
The CPLD node is missing in Linux 4.17 DTs on H3/M3W ULCB, pull the
node into U-Boot specific DT until it hits mainline Linux, to make
syncing of DTs easier.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
V2: Rebase on u-boot/master
Marek Vasut [Mon, 3 Dec 2018 19:45:22 +0000 (20:45 +0100)]
ARM: dts: rmobile: Extract AVB node extras on V3M Eagle
The AVB node is not complete in Linux 4.17 DTs on V3M Eagle, pull the
AVB node extras into U-Boot specific DT until they hit mainline Linux,
to make syncing of DTs easier.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
V2: Rebase on u-boot/master
Marek Vasut [Mon, 3 Dec 2018 19:39:07 +0000 (20:39 +0100)]
ARM: dts: rmobile: Extract SDHI nodes on M3N
The SDHI nodes are not in Linux 4.17 DTs in M3N, pull them into U-Boot
specific DT extras until they hit mainline Linux, to make syncing of
DTs easier.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
V2: Rebase on u-boot/master
Marek Vasut [Mon, 3 Dec 2018 19:17:50 +0000 (20:17 +0100)]
ARM: dts: rmobile: Extract RPC node to u-boot specific DT
The RPC DT bindings are still work in progress. Extract the RPC DT node
from the DT to allow easier update and so it can be replaced once the DT
bindings are stable.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
V2: Rebase on u-boot/master
Marek Vasut [Mon, 26 Nov 2018 23:19:03 +0000 (00:19 +0100)]
ARM: rmobile: Convert to bootm_size
Convert all Renesas R-Car boards to bootm_size of 256 MiB and drop both
fdt_high and initrd_high. This change implies that the FDT and initrd
will always be copied into the first 256 MiB of RAM instead of being
used in place, which can cause various kinds of inobvious problems.
The simpler problems include FDT or initrd being overwritten or being
used from unaligned addresses, especially on ARM64. The overhead of
copying the FDT to aligned location is negligible and these problems
go away, so the benefit is significant.
Regarding alignment problems with fitImage. The alignment of DT properties
is always 32 bits, which implies that the alignment of the "data" property
in fitImage is also 32 bits. The /incbin/ syntax plays no role here. The
kernel expects all elements, including DT and initrd, to be aligned to
64 bits on ARM64, thus using them in place may not be possible. Using the
bootm_size assures correct alignment, again with negligible overhead.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Cc: Tom Rini <trini@konsulko.com>
Marek Vasut [Sun, 18 Nov 2018 02:25:08 +0000 (03:25 +0100)]
mmc: Do not issue CMD 6 on SD 1.00 and SD 1.01
According to SD Specifications Part 1 Physical Layer Simplified Specification
Version 6.00 August 29, 2018, section 4.3.10 (Switch Function Command) and
section 5.6 (SCR register), SD cards version 1.00 and 1.01 do not support the
SD CMD 6.
Currently, U-Boot will issue CMD 6 unconditionally in sd_set_card_speed()
while configuring the bus for selected frequency. This will make SD cards
version 1.00 and 1.01 time out and thus fail detection altogether.
Fix this by not sending CMD 6 on such cards. Tested on Matsushita Electric
Industrial Co., Ltd. Japan RP-SD008B / Victor 8MB SD card, CU-SD008, which
is correctly detected with this patch as:
Device: sd@ee160000
Manufacturer ID: 1
OEM: 5041
Name: S008B
Bus Speed: 25000000
Mode : SD Legacy
Rd Block Len: 512
SD version 1.0
High Capacity: No
Capacity: 6.5 MiB
Bus Width: 4-bit
Erase Group Size: 512 Bytes
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
The Rockchip Technical Reference Manual (TRM) for the rk3399 says the baud
rate prescaler register is readable only when USR[0] is zero. Since this
bit is defined as "reserved" in the socfpga cylcone5 TRM, let's rather
drop this than making the ns16550 debug uart more platform specific.
Reported-by: Roosen Henri <Henri.Roosen@ginzinger.com> Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com
Tom Rini [Thu, 29 Nov 2018 23:21:14 +0000 (18:21 -0500)]
dm: MIGRATION: Update migration plan for BLK
The biggest part of migration to using CONFIG_BLK is that we need to
have the various subsystems migrated first, so reword the plan here to
reference the new deadlines.
Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
Tom Rini [Thu, 29 Nov 2018 23:21:13 +0000 (18:21 -0500)]
dm: MIGRATION: Add migration plan for CONFIG_SATA
As the core of the subsystem has been converted along with some of the
drivers, formalize a deadline for migration.
Cc: Akshay Bhat <akshaybhat@timesys.com> Cc: Andreas Geisreiter <ageisreiter@dh-electronics.de> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Christian Gmeiner <christian.gmeiner@gmail.com> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Jason Liu <jason.hui.liu@nxp.com> Cc: Ken Lin <Ken.Lin@advantech.com.tw> Cc: Ludwig Zenz <lzenz@dh-electronics.de> Cc: Marek Vasut <marex@denx.de> Cc: Max Krummenacher <max.krummenacher@toradex.com> Cc: Nikita Kiryanov <nikita@compulab.co.il> Cc: Otavio Salvador <otavio@ossystems.com.br> Cc: Peng Fan <peng.fan@nxp.com> Reviewed-by: Simon Glass <sjg@chromium.org> Cc: Soeren Moch <smoch@web.de> Cc: Stefan Roese <sr@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Tim Harvey <tharvey@gateworks.com> Cc: Troy Kisky <troy.kisky@boundarydevices.com> Cc: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi> Cc: York Sun <york.sun@nxp.com> Signed-off-by: Tom Rini <trini@konsulko.com>
Tom Rini [Thu, 29 Nov 2018 23:21:11 +0000 (18:21 -0500)]
dm: MIGRATION: Add migration plan for DM_MMC
Given that at this point the MMC subsystem itself has been migrated
along with a number of subsystem drivers, formalize a deadline for
migration.
Reviewed-by: Simon Glass <sjg@chromium.org> Cc: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tom Rini [Tue, 4 Dec 2018 00:30:54 +0000 (19:30 -0500)]
Merge tag 'xilinx-for-v2019.01' of git://git.denx.de/u-boot-microblaze
Xilinx changes for v2019.01
microblaze:
- Use default functions for memory decoding
- Showing model from DT
zynq:
- Fix spi flash DTs
- Fix zynq_help_text with CONFIG_SYS_LONGHELP
- Tune cse/mini configurations
- Enabling cse/mini testing with current targets
zynqmp:
- Enable gzip SPL support
- Fix chip detection logic
- Tune mini configurations
- DT fixes(spi-flash, models, clocks, etc)
- Add support for OF_SEPARATE configurations
- Enabling mini testing with current targets
- Add mini mtest configuration
- Some minor config setting
Tom Rini [Mon, 3 Dec 2018 22:52:40 +0000 (17:52 -0500)]
Merge tag 'signed-efi-next' of git://github.com/agraf/u-boot
Patch queue for efi - 2018-12-03
This release is fully packed with lots of glorious improvements in UEFI
land again!
- Make PE images more standards compliant
- Improve sandbox support
- Improve correctness
- Fix RISC-V execution on virt model
- Honor board defined top of ram (fixes a few boards)
- Imply DM USB access when distro boot is available
- Code cleanups
Christophe Leroy [Wed, 21 Nov 2018 08:51:55 +0000 (08:51 +0000)]
board_r: fix build with DM_SPI
CC common/board_r.o
common/board_r.c:747:2: error: ‘initr_spi’ undeclared here (not in a function)
initr_spi,
^
make[1]: *** [common/board_r.o] Error 1
Fixes: ebe76a2df9f6 ("dm: Remove spi_init() from board_r.c when using driver model") Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Christophe Leroy [Wed, 21 Nov 2018 08:51:45 +0000 (08:51 +0000)]
drivers: watchdog: add a DM driver for the MPC8xx watchdog
This patch adds a DM driver for the MPC8xx watchdog.
Basically, the watchdog is enabled by default from the start and
SYPCR register has to be writen once to set the timeout and/or
deactivate the watchdog. Once written, it cannot be written again.
It means that wdt_stop() can be called before wdt_start() to stop the
watchdog, but cannot be called if wdt_start() has been called.
Philippe Reynes [Wed, 14 Nov 2018 12:51:05 +0000 (13:51 +0100)]
test: vboot: clean its file
This update the its file used in vboot test to respect the new
node style name defined in doc/uImage.FIT (for example: replace
kernel@1 by kernel and fdt@1 by fdt-1)
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Philippe Reynes [Wed, 14 Nov 2018 12:51:00 +0000 (13:51 +0100)]
rsa: add a structure for the padding
The rsa signature use a padding algorithm. By default, we use the
padding pkcs-1.5. In order to add some new padding algorithm, we
add a padding framework to manage several padding algorithm.
The choice of the padding is done in the file .its.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Philippe Reynes [Wed, 14 Nov 2018 12:50:59 +0000 (13:50 +0100)]
rsa: use new openssl API to create signature
Previous implementation of the rsa signature was using
the openssl API EVP_Sign*, but the new openssl API
EVP_DigestSign* is more flexible. So we move to this
new API.
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com> Reviewed-by: Simon Glass <sjg@chromium.org>
net: zynq_gem: Add check for 64-bit dma support by hardware
This patch throws an error if 64-bit support is expected
but DMA hardware is not capable of 64-bit support. It also
prints a debug message if DMA is capable of 64-bit but not
using it.
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
T Karthik Reddy [Mon, 3 Dec 2018 14:05:09 +0000 (19:35 +0530)]
arm64: zynqmp: Add new header file for zcu104 RevC
Created a new header file for zcu104 RevC board and added below
configurations to use MAC address from EEPROM.
CONFIG_ZYNQ_GEM_EEPROM_ADDR
CONFIG_ZYNQ_EEPROM_BUS
Added CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0x20 to
xilinx_zynqmp_zcu104_revC_defconfig
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com> Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Marek Vasut [Wed, 31 Oct 2018 19:34:41 +0000 (20:34 +0100)]
ARM: dts: rmobile: Enable SDR modes on E3 Ebisu
Add regulators and pinmuxes for SDHI0 and SDHI1 SD and microSD
slots on E3 Ebisu and mark them as capable of up to SDR104 mode
of operation. With the SDHI fixes in place, it is now possible
to use SDR104.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Marek Vasut [Wed, 13 Jun 2018 06:02:55 +0000 (08:02 +0200)]
mmc: tmio: sdhi: Move tap_pos to private data
Move the tap_pos variable, which is the HS200/HS400/SDR104 calibration
offset, into private data, so it can be passed around. This is done in
preparation for the HS400 mode, which needs to adjust this value.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Marek Vasut [Thu, 15 Nov 2018 21:01:33 +0000 (22:01 +0100)]
mmc: tmio: Reorder TMIO clock handling
Reorder the tmio_sd_set_clk_rate() function such that it handles all
of the clock requiests correctly. Specifically, before this patch,
clock request with (mmc->clock == 0 && mmc->clk_disable) could leave
the clock enabled, as the function would exit on if (!mmc->clock)
condition on top and will not handle the mmc->clk_disable at all.
Rather than band-aid fixing just that particular problem, reorder
the entire function to make it easier to understand and verify that
all the cases are covered. The function has three sections now:
First, if mmc->clock != 0, we calculate divider for the SD block.
Second, if mmc->clock != 0 and SD block clock are enabled and
current divider is not equal to the new divider, then
stop the clock and update the divider.
Third, if mmc->clk_disable is set, disable the clock, otherwise
enable the clock. This happens independently of divider
update now.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Marek Vasut [Wed, 13 Jun 2018 06:02:55 +0000 (08:02 +0200)]
mmc: tmio: Keep generating clock when clock are enabled
The TMIO core has a feature where it can automatically disable clock output
when the bus is not in use. While this is useful, it also interferes with
switching the bus to 1.8V and other background tasks of the SD/MMC cards,
which require clock to be enabled.
This patch respects the mmc->clk_disable and only disables the clock when
the MMC core requests it. Otherwise the clock are continuously generated
on the bus.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Marek Vasut [Wed, 13 Jun 2018 06:02:55 +0000 (08:02 +0200)]
mmc: tmio: Switch to clock framework
Switch the driver to using clk_get_rate()/clk_set_rate() instead of
caching the mclk frequency in it's private data. This is required on
the SDHI variant of the controller, where the upstream mclk need to
be adjusted when using UHS modes.
Platforms which do not support clock framework or do not support it
in eg. SPL default to 100 MHz clock.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
---
V2: - Fix build on certain platforms using SPL without clock framework
V3: - Turn clk_get_rate into a callback and fill it as needed on both
renesas and socionext platforms
Marek Vasut [Wed, 13 Jun 2018 04:50:16 +0000 (06:50 +0200)]
mmc: Parse HS400 DT properties
Add HS400 properties parsing support to mmc_of_parse().
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Jean-Jacques Hiblot <jjhiblot@ti.com> Cc: Kishon Vijay Abraham I <kishon@ti.com> Cc: Peng Fan <peng.fan@nxp.com> Cc: Simon Glass <sjg@chromium.org>
Marek Vasut [Tue, 30 Oct 2018 16:54:20 +0000 (17:54 +0100)]
clk: renesas: Allow reconfiguring SDHI clock on Gen3
The SDHI clock must be configured differently for HS200/HS400/SDR104
modes. Add support for reconfiguring the SDHI clock settings into the
clock driver.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Alexey Brodkin [Tue, 27 Nov 2018 06:46:59 +0000 (09:46 +0300)]
arc: emsdp: Read real CPU clock value from hardware
We do real CPU clock measurement with help of built-in
counters. Thus we may accommodate different real clock values
that appear in different FPA images instead of relying on
something hard-coded in the .dtb.
And while at it make make SDIO base address define
look similar to others with casting to "(void *)".
Alexey Brodkin [Tue, 27 Nov 2018 06:46:57 +0000 (09:46 +0300)]
ARC: Improve identification of ARC cores
1. Try to guess a ARC core template that was used
i.e. not just name a core family but something more
menaingful like "ARC HS38", "ARC EM11D" etc.
We do it checking availability of the key differentiation
features like:
- Caches (we actually only check for L1 I$ fpr simplicity)
- XY-memory
- DSP extensions etc.
Alexey Brodkin [Tue, 27 Nov 2018 06:20:44 +0000 (09:20 +0300)]
arc: emsdp: Bump RAM size to 16 Mb
On v2 boards that will hit real stock we'll have 16 Mb of RAM.
Note on v1 boards (if anybody ever get one out of trash bin)
this leads to U-Boot execution freeze in the middle ofthe relocation
so don't be surprised.
In this patch, helper functions for an load option variable (BootXXXX)
are added:
* efi_deserialize_load_option(): parse a string into load_option data
(renamed from parse_load_option and exported)
* efi_serialize_load_option(): convert load_option data into a string
Those functions will be used to implement efishell command.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by: Alexander Graf <agraf@suse.de>
Otavio Salvador [Tue, 23 Oct 2018 13:35:52 +0000 (10:35 -0300)]
ARM: rpi_*_defconfig: Add support to find UUID for filesystem
The most generic way of having a stable boot behavior is to rely on
UUID instead of device names for root partition, so the order of
probing does not cause issues with booting.
This enables the `CMD_FS_UUID` for following defconfig files:
When booting with the rpi-firmware "mmc" overlay that disable
the SDHOST controller and use the SDHCI one for the sd card,
mmc 1 because a viable boot target.
Add it to the list
The variable name setup_ok might suggest a boolean with true indicating
OK. Let's avoid the misleading name.
%s/setup_ok/setup_status/g
Suggested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexander Graf <agraf@suse.de>
We should not call eth_rx() before the network interface is initialized.
The services of the simple network protocol should check the state of
the network adapter.
Add and correct comments.
Without this patch i.mx6 system Wandboard Quad rev B1 fails to execute
bootefi selftest.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Calling net_send_packet() requires that the buffer is aligned to a multiple
of PKTALIGN (= ARCH_DMA_MINALIGN). The UEFI spec does not require
efi_net_transmit() to be called with a buffer with any special alignment.
So we have to copy to an aligned buffer. The current coding copies to an
aligned buffer only if CONFIG_EFI_LOADER_BOUNCE_BUFFER=y. Many boards
like the Odroid C2 do not use a bounce buffer.
With the patch we copy to a correctly aligned buffer in all cases.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
The sandbox is using a virtual address space which is neither the physical
address space of the operating system nor the virtual address space in
which Linux aplications live. The addresses used insided the flattened
device tree use this sandbox virtual address space. The EFI subsystem uses
the virtual address space of the operating system and this is where the fdt
is stored.
Fix all incorrect addresses for the fdt in cmd/bootefi.cmd.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
On the sandbox the memory addresses in the device tree refer to the virtual
address space of the sandbox. This implies that the memory reservations for
the fdt also have to be converted to this address space.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
The sandbox uses a virtual address space that is neither the physical nor
the virtual address space of the operating system. All address used on the
command line live in this address space. So also the environment variable
${fdtcontroladdr} has to be in this address space.
Commands like bootefi and booti receive the fdt address as parameter.
Without the patch ${fdtcontroladdr} cannot be used as parameter value on
the sandbox.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Do not use the sandbox's virtual address space for the internal structures
of the memory map. This way we can eliminate a whole lot of unnecessary
conversions.
The only conversion remaining is the one when adding known memory.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Simon Glass [Mon, 26 Nov 2018 03:14:38 +0000 (20:14 -0700)]
efi: Create a function to set up for running EFI code
There is still duplicated code in efi_loader for tests and normal
operation.
Add a new bootefi_run_prepare() function which holds common code used to
set up U-Boot to run EFI code. Make use of this from the existing
bootefi_test_prepare() function, as well as do_bootefi_exec().
Also shorten a few variable names.
Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexander Graf <agraf@suse.de>
Simon Glass [Mon, 26 Nov 2018 03:14:37 +0000 (20:14 -0700)]
efi: Split out test init/uninit into functions
The functions in bootefi are very long because they mix high-level code
and control with the low-level implementation. To help with this, create
functions which handle preparing for running the test and cleaning up
afterwards.
Also shorten the awfully long variable names here.
Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexander Graf <agraf@suse.de>
Simon Glass [Mon, 26 Nov 2018 03:14:36 +0000 (20:14 -0700)]
efi: Check for failure to create objects in selftest
At present a few error conditions are not checked. Before refactoring
this code, add some basic checks. Note that this code still leaks memory
in the event of error. This will be tackled after the refactor.
Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Alexander Graf <agraf@suse.de>
Alexander Graf [Fri, 30 Nov 2018 20:24:56 +0000 (21:24 +0100)]
efi_loader: Reserve unaccessible memory
On some systems, not all RAM may be usable within U-Boot. Maybe the
memory maps are incomplete, maybe it's used as workaround for broken
DMA. But whatever the reason may be, a platform can say that it does
not wish to have its RAM accessed above a certain address by defining
board_get_usable_ram_top().
In the efi_loader world, we ignored that hint, mostly because very few
boards actually have real restrictions around this.
So let's honor the board's wish to not access high addresses during
boot time. The best way to do so is by indicating the respective pages
as "allocated by firmware". That way, Operating Systems will still
use the pages after boot, but before boot no allocation will use them.
Reported-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Tested-by: Baruch Siach <baruch@tkos.co.il>
projects / uboot.git / log