secure_tee_install is used to install and initialize a secure TEE OS such as
Linaro OP-TEE into the secure world. This function takes in the address
where the signed TEE image is loaded as an argument. The signed TEE image
consists of a header (struct tee_header), TEE code+data followed by the
signature generated using image signing tool from TI security development
package (SECDEV). Refer to README.ti-secure for more information.
This function uses 2 new secure APIs.
1. PPA_SERV_HAL_TEE_LOAD_MASTER - Must be called on CPU Core 0. Protected
memory for TEE must be reserved before calling this function. This API
needs arguments filled into struct ppa_tee_load_info. The TEE image is
authenticated and if there are no errors, the control passes to the TEE
entry point.
2. PPA_SERV_HAL_TEE_LOAD_SLAVE - Called on other CPU cores only after
a TEE_LOAD_MASTER call. Takes no arguments. Checks if TEE was
successfully loaded (on core 0) and transfers control to the same TEE
entry point.
The code at TEE entry point is expected perform OS initialization steps
and return back to non-secure world (U-Boot).
Signed-off-by: Harinarayan Bhatta <harinarayan@ti.com> Signed-off-by: Andrew F. Davis <afd@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
arm: omap5: Add function to make an SMC call on cpu1
On DRA7xx platform, CPU Core 1 is not used in u-boot. However, in some
cases it is need to make secure API calls from Core 1. This patch adds
an assembly function to make a secure (SMC) call from CPU Core #1.
Signed-off-by: Harinarayan Bhatta <harinarayan@ti.com> Signed-off-by: Andrew F. Davis <afd@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
Andrew F. Davis [Tue, 29 Nov 2016 22:33:20 +0000 (16:33 -0600)]
image: Add FIT image loadable section custom processing
To help automate the loading of custom image types we add the ability
to define custom handlers for the loadable section types. When we find
a compatible type while loading a "loadable" image from a FIT image we
run its associated handlers to perform any additional steps needed for
loading this image.
Signed-off-by: Andrew F. Davis <afd@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Fabien Parent [Tue, 29 Nov 2016 13:31:34 +0000 (14:31 +0100)]
davinci: omapl138_lcdk: add NAND SPL boot support
NAND SPL boot was missing. Add it. The README specific to omapl138-lcdk
is also removed because its content does not apply anymore, i.e. the
generated AIS image can be flashed directly to the NAND without
using any external tool to create and bootable AIS image.
Signed-off-by: Fabien Parent <fparent@baylibre.com> Reviewed-by: Tom Rini <trini@konsulko.com>
Fabien Parent [Tue, 29 Nov 2016 13:31:32 +0000 (14:31 +0100)]
davinci: omapl138_lcdk: use correct name for CONFIG_SYS_NAND_MASK_ALE
CONFIG_SYS_ALE_MASK is not used anywhere. It has probably been
renamed to CONFIG_SYS_NAND_MASK_ALE. Rename it and remove the former
from the config_whitelist.txt file.
Signed-off-by: Fabien Parent <fparent@baylibre.com> Reviewed-by: Tom Rini <trini@konsulko.com>
Fabien Parent [Tue, 29 Nov 2016 13:31:31 +0000 (14:31 +0100)]
davinci: omapl138_lcdk: use correct name for CONFIG_SYS_NAND_MASK_CLE
CONFIG_SYS_CLE_MASK is not used anywhere. It has probably been
renamed to CONFIG_SYS_NAND_MASK_CLE. Rename it and remove the former
from the config_whitelist.txt file.
Signed-off-by: Fabien Parent <fparent@baylibre.com> Reviewed-by: Tom Rini <trini@konsulko.com>
Fabien Parent [Tue, 29 Nov 2016 13:31:30 +0000 (14:31 +0100)]
davinci: omapl138_lcdk: use correct define for 16 bit NAND chips
The omapl138_lcdk header defines CONFIG_SYS_NAND_BUSWIDTH_16_BIT while
the correct name is CONFIG_SYS_NAND_BUSWIDTH_16BIT.
While renaming the only occurrence of CONFIG_SYS_NAND_BUSWIDTH_16_BIT,
let's also remove it from the config_whitelist.txt file.
Signed-off-by: Fabien Parent <fparent@baylibre.com> Reviewed-by: Tom Rini <trini@konsulko.com>
Nishanth Menon [Tue, 29 Nov 2016 09:52:00 +0000 (15:22 +0530)]
ARM: DRA7x/AM57xx: Get rid of CONFIG_AM57XX
CONFIG_AM57XX is just an unnecessary macro that is redundant given So,
remove the same instead of spreading through out the u-boot source
code and getting in the way to maintain common code for DRA7x family.
Acked-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
Nishanth Menon [Tue, 29 Nov 2016 09:51:59 +0000 (15:21 +0530)]
usb: xhci: Remove assumption of DWC instance based on DRA7 SoC type
Both AM57xx and DRA7xx share the same set of base addresses for DWC
controllers. The usage however differ with DWC2 instance used typically
in AM57xx evms while DWC1 instances used in DRA7x platforms.
Use TARGET_SOC config to differentiate so that CONFIG_AM57XX can be dropped.
Nishanth Menon [Tue, 29 Nov 2016 06:37:50 +0000 (12:07 +0530)]
ARM: K2G: DDR3: Fix up priv ID for MPU
For ECC enabled DDR, we use EDMA to reset all memory values to 0. For
K2E/L/H/K the priv ID of 8 was indicative of ARM, but that is not the
case for K2G, where it is 1.
Unfortunately, ddr3 code had hard coded the privID and had missed
identification previously. Fix the same, else unforeseen behavior can
be expected in our reset of DDR contents to 0 for ECC enablement.
Lokesh Vutla [Tue, 29 Nov 2016 06:28:00 +0000 (11:58 +0530)]
ti_armv7_common: env: Add support for loading FIT images
FIT is a new image format which is a Tree like structure and gives more
flexibility in handling of various images. Mainly used for unification of
multiple images in a single blob and provide security information for each
image.
U-Boot already has support for loading such images, so adding the environment
support to load FIT image on all TI platforms.
Reviewed-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
Lokesh Vutla [Tue, 29 Nov 2016 06:27:59 +0000 (11:57 +0530)]
ti_armv7_common: env: Consolidate support for loading images from mmc
Support for loading images from mmc is duplicated in all TI platforms.
Add this information to DEFAULT_MMC_TI_ARGS so that it can be reused
in all TI platforms.
Reviewed-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
An issue in the TI secure image generation tool causes the ROM to
load the SPL at a different load address than what is specified by
CONFIG_ISW_ENTRY_ADDR while doing a peripheral boot.
This causes the SPL to fail on secure devices during peripheral
boot.
The TI secure image generation tool has been fixed so that the SPL
will always be loaded at 0x403018E0 by the ROM code for both
peripheral and memory boot modes. am43x hs defconfig file have been
updated to reflect this change.
r2dplus: fixup CONFIG_SYS_TEXT_BASE to account arch/sh changes
This change allows to reserve enough space at the end of board SDRAM
to store two copies of U-Boot and malloc heap.
Due to selection of the CONFIG_SYS_TEXT_BASE the second code/data
copying is not avoided, first of all this may depend on a used
toolchain, secondly at this point some level of volatility is wanted
to do more platform changes and do not care about probably changed
calculated in runtime relocation offset.
sh: generate position independent code for all platforms
Finally add fpic compilation option to produce relocatable code.
Note that this requires to define CONFIG_NEEDS_MANUAL_RELOC for all
board files, also relocation support still has some limitations
(e.g. a developer should care not to overwrite the executing code or
memset() with zeroes not yet relocated data on malloc init etc.),
which may be fixed while switching to PIE.
Due to short investigation the architecture code is not ready for PIE
linking, this will require some manipulations with .dyn* sections.
sh: share the correct version of start.S among all cpus
It is easy to note that SH2/SH3/SH4 start.S code is practically
the same with a minor difference for SH2 where a short data header is
present. To avoid unwanted code duplication and to automatically
convert SH2 and SH3 platforms to generic board support move fixed SH4
start.S into arch/sh/lib/start.S and share it among all platforms.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh4: fix start.S by calling board_init_f() after first code relocation
Like on ARM platform keep the first code relocation from a U-boot
image storage to RAM at CONFIG_SYS_TEXT_BASE, then pass execution to a
generic board_init_f() with empty GD flags. If CONFIG_SYS_TEXT_BASE is
equal to a calculated by board_init_f() relocation address there will
be no more code and data copy, however it's worth to mention that the
first copy happens even if $pc on _start is the same as
CONFIG_SYS_TEXT_BASE, on practice this works without a problem.
Also note that _sh_start is renamed back to _start to correct
gd->mon_len calculation by setup_mon_len(), the opposite rename was
done in pre-generic board commit 2024b968ee9 ("sh: Fix build in start.S").
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh: add shared relocate_code() function and call board_init_r()
Commits b61e90e6fd83 ("sh: Drop the arch-specific board init") and f41e6088eb1a ("sh: Fix build errors for generic board") left code and
data relocation done in start.S, however further actual U-boot
configuration is not started anymore. Practically SH boards with the
code relocated into the expected position by start.S still can be
booted, so the change adds this option and provides an option how to
relocate code for board_init_r() execution.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh: add common dram_init() function for all boards
Generic board support assumes a different method of specifying
DRAM size on board, also it can be shared among all boards, notably
only sh7763rdp board has a custom legacy dram_init(), however
the difference is only in printing some additional information,
this feature can be removed.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh: define CONFIG_DISPLAY_BOARDINFO to print board information
All SH boards define a checkboard() function which outputs basic board
information on boot, however generic board support requires to define
CONFIG_DISPLAY_BOARDINFO to do that, so define it for the boards.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh: remove undefined DEBUG preprocessor token from board config files
By default this undef is a noop, moreover at this point when the
platform support is broken is prevents debugging of U-boot by manual
insertion of #define DEBUG into common files, so it makes sense to
remove the option from all SH boards as a harmful one.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
At the moment in runtime all defined sections are copied into or
created in RAM, specify this explicitly to assert potential out of RAM
placements of the sections.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh: define entry point and reloc_dst inside a linker script
No functional change, concentrate linker script commands in one
place for convenience. Entry point is set to CONFIG_SYS_TEXT_BASE by
default on build, so this option can be omitted from being added to
the linker script.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh: place board lowlevel_init code in the beginning of .text
Reference lowlevel_init of all supported SH2A/SH3/SH4/SH4A boards
from a shared linker script, the lowlevel_init function will be called
by a relative address.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh4: use single u-boot linker script for all boards
Three supported SH4/SH4A boards with the bootloader image stored on
SPI flash have own flavour of a linker script, in turn they are equal
among each other. The only difference is that the text from
lowlevel_init.o is placed right after start.o, which makes sense.
Note that .bss section is not marked as NOLOAD, because for about
10 years this is a default option of a GNU linker, either the
attribute is found or not the resulting image file is the same.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Since a platform conversion to generic board support has not been
accomplished some architecture specific bits are missing from board_f
init sequence, the change adds a number of basic expected callbacks
into early init sequence.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
CONFIG_RTL8139 was moved to a board defconfig by a commit 86e9dc86b1a2
("net: Move CONFIG_RTL8139 to Kconfig"), however it was done
incorrectly due to a missing CONFIG_NETDEVICES selection, thus
virtually it was just a removal of the driver compilation.
As an unlucky consequence the option was completely removed by a purge
commit adad96e60d0e ("configs: Re-sync HUSH options"), restore the
driver inclusion back.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
r2dplus: use P1 area space for text base and PCI system memory
While both options are acceptable use P1 area physical addresses
instead of external memory space of text base and PCI system memory
for unification purposes, all other supported superh boards have the
same selection.
This allows to easily ensure that CONFIG_SYS_TEXT_BASE is located
within available DRAM.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
For ease of use and accounting a condition that on SH4
pci_phys_to_bus() and pci_bus_to_phys() are one in one mappings due to
unimplemented __iomem() conversion, this change fixes access to SDRAM
memory by PCI devices.
This change also generalizes PCI system memory configuration, which is
taken from board specific defines rather than hardcoded in the PCI
host driver.
The change actually maps PCI I/O window to the same address on PCI bus
as it is stated by a comment, before the change transfers to the PCI I/O
space are failed due to misconfiguration of the most significant 14 bits
of the PCI address in PCIIOBR (note that it is set to 0x0).
Most probably the problem remained unnoticed, because communcation
to all tested PCI devices is done over PCI memory space only.
sh4: cache: move exported cache manipulation functions into cache.c
No functional change, moving cache manipulation functions into cache.c
allows to collect all of them in a single location and as a pleasant
side effect cache_control() function can be unexported now.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
cache_wback_all() is a local function and it is called from
cache_control() only, which is in turn jumps to P2 area.
The change fixes an issue when cache_wback_all() returns from P2 to
P1, however cache_control() continues to manipulate with CCR
register, according to the User's Manual this is restricted.
The change is similar to commit 994b56616bae ("sh: delete an unused
source file") for SH2, however here the removed cache.c file was
built and included into an image as a dead code.
If it is needed in future the contents can be reused from a similar
arch/sh/cpu/sh4/cache.c file, which is in turn will be moved to
a shared among all core flavours location at arch/sh/lib/cache.c.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh4: cache: correct flush_cache() to writeback and invalidate
In common usecases flush_cache() assumes both cache invalidation and
write-back to memory, instead of doing cache invalidation only with
the wrapped 'ocbi' instruction pin flush_cache() to cache invalidation
with memory write-back done by 'ocbp'.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Simon Glass <sjg@chromium.org>
sh4: cache: correct dcache flush to invalidate with write-back
In common usecases flush_cache() assumes both cache invalidation and
write-back to memory, thus in flush_dcache_range() implementation
change SH4 cache write-back only instruction 'ocbwb' with cache purge
instruction 'ocbp', according to the User's Manual there should be no
performance penalty for that.
Note that under circumstances only cache invalidation is expected from
flush_cache() call, in these occasional cases the current version of
flush_cache() works, which is a wrapper over invalidate_dcache_range()
at the moment, this will be fixed in the following change.
Jonathan Gray [Sat, 26 Nov 2016 04:18:00 +0000 (15:18 +1100)]
compiler.h: use u-boot endian macros on OpenBSD
When building u-boot on sparc64 and powerpc hosts it became clear that
u-boot expects endian conversion defines to be macros:
lib/crc32.c:87: error: braced-group within expression allowed only inside a function
For OpenBSD switch from using system definitions equivalent to the u-boot ones
and define glibc __BYTE_ORDER __BIG_ENDIAN __LITTLE_ENDIAN names, as at least
some parts of the non-cross build assumes those names are present (ie crc32.c).
Michal Simek [Wed, 30 Nov 2016 11:50:58 +0000 (12:50 +0100)]
scsi: Separate SCSI private block description initialization
When blk_create_device() is called some parameters in blk_desc are
automatically filled. Separate SCSI private initialization and SCSI full
block device initialization not to rewrite already prepared data.
Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Michal Simek [Wed, 30 Nov 2016 11:12:31 +0000 (12:12 +0100)]
scsi: Change scsi_scan() to be able to return value
With DM_SCSI this function will return more than one return value to
cover errors.
Suggested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Michal Simek [Fri, 18 Nov 2016 15:22:42 +0000 (16:22 +0100)]
scsi: Simplify scsi_read/scsi_write()
There is no reason to directly point to static allocated array
when we have proper block_dev pointer available via parameter
in !CONFIG_BLK. For CONFIG_BLK this is read directly from uclass
platdata.
Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Michal Simek [Wed, 16 Nov 2016 07:41:01 +0000 (08:41 +0100)]
common: miiphyutil: Work and report phy address in hex in mdio cmd
It is confusing that mdio commands work and report phy id as
decimal value when mii is working with hex values.
For example:
ZynqMP> mdio list
gem:
21 - TI DP83867 <--> ethernet@ff0e0000
ZynqMP> mdio read ethernet@ff0e0000 0
Reading from bus gem
PHY at address 21:
0 - 0x1140
ZynqMP> mii dump 21 0
Incorrect PHY address. Range should be 0-31
...
ZynqMP> mii dump 15
0. (1140) -- PHY control register --
(8000:0000) 0.15 = 0 reset
U-Boot normally takes hex values that's why this patch is changing mdio
command to handle hex instead of changing mii command to handle decimal
values.
Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Michal Simek [Wed, 26 Oct 2016 07:24:32 +0000 (09:24 +0200)]
ARM64: zynqmp: List secondary software boot modes
Using alternative bootmode field to support automatic secondary boot
modes. It is purely software setting where SW modes are using free
bootmode combinations.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Michal Simek [Tue, 29 Nov 2016 11:03:51 +0000 (12:03 +0100)]
ARM64: zynqmp: Use DTS name for different psu_init_gpl* files in SPL
CONFIG_SYS_CONFIG_NAME is not proper config option for different low
level init files because different board revisions requires different
psu_init_gpl* files.
Also at the end of moving drivers to DM all board specific configuration
files should be removed.
Michal Simek [Tue, 30 Aug 2016 14:17:27 +0000 (16:17 +0200)]
ARM64: zynqmp: Force certain bootmode for SPL
ZynqMP provides an option to overwrite bootmode setting which
can change SPL behavior.
For example: boot SPL via JTAG and then SPL loads images from SD.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Chris Packham [Wed, 9 Nov 2016 09:21:45 +0000 (22:21 +1300)]
tools/kwbimage: add DEBUG option
Offset 0x1 in the generated kwb image file is a set of flags, bit 0
enables debug output from the BootROM firmware. Allow a DEBUG option in
the kwb configuration to request debug output from the BootROM firmware.
Signed-off-by: Chris Packham <judge.packham@gmail.com> Signed-off-by: Stefan Roese <sr@denx.de>
Chris Packham [Wed, 9 Nov 2016 09:07:45 +0000 (22:07 +1300)]
tools/kwbimage: add BAUDRATE option
Offset 0x18 in some Marvell datasheets this field is redacted as
"reserved". This offset is actually a set of options and bits 2:0 allow
the selection of the UART baudrate.
Allow a BAUDRATE option to set the UART baudrate for any messages coming
from the BootROM firmware.
Signed-off-by: Chris Packham <judge.packham@gmail.com> Signed-off-by: Stefan Roese <sr@denx.de>
Marek Vasut [Thu, 1 Dec 2016 01:06:33 +0000 (02:06 +0100)]
mmc: Tinification of the mmc code
Add new configuration option CONFIG_MMC_TINY which strips away all
memory allocation within the MMC code and code for handling multiple
cards. This allows extremely space-constrained SPL code use the MMC
framework.
Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Marek Vasut <marex@denx.de> Cc: Tom Rini <trini@konsulko.com> Cc: Jaehoon Chung <jh80.chung@samsung.com>
Marek Vasut [Thu, 1 Dec 2016 01:06:32 +0000 (02:06 +0100)]
mmc: Fix warning if debug() is not used
If debug() is not used, then the whole content of debug(...) will
be removed by the preprocessor, which will result in the following
warning. This patch adds __maybe_unused annotation to fix this.
drivers/mmc/mmc.c: In function ‘mmc_init’:
drivers/mmc/mmc.c:1685:11: warning: variable ‘start’ set but not used [-Wunused-but-set-variable]
unsigned start;
Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Marek Vasut <marex@denx.de> Cc: Pantelis Antoniou <panto@antoniou-consulting.com> Cc: Jaehoon Chung <jh80.chung@samsung.com>
Tom Rini [Wed, 30 Nov 2016 19:14:47 +0000 (14:14 -0500)]
ts4600: Disable CONFIG_DISPLAY_CPUINFO
Without this change we see:
../arch/arm/cpu/arm926ejs/mxs/mxs.c: In function ‘print_cpuinfo’:
../arch/arm/cpu/arm926ejs/mxs/mxs.c:181:23: warning: unused variable ‘data’ [-Wunused-variable]
../arch/arm/cpu/arm926ejs/mxs/mxs.c:180:6: warning: variable ‘cpurev’ set but not used [-Wunused-but-set-variable]
So the easy solution is to disable CONFIG_DISPLAY_CPUINFO
Reviewed-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com> Signed-off-by: Tom Rini <trini@konsulko.com>
Tom Rini [Wed, 30 Nov 2016 19:05:08 +0000 (14:05 -0500)]
travis.yml: Split Freescale ARM job up more
In order to avoid running into the time limit, split the 32bit and 64bit
Freescale boards into separate jobs. We could either pass
"freescale & armv8" to buildman or exclude all of the 32bit CPUs. While
the former is shorter I fear the amount of possible escaping required
would make things less readable.
Paul Burton [Mon, 26 Sep 2016 18:28:57 +0000 (19:28 +0100)]
MIPS: Fix map_physmem for cached mappings
map_physmem should return a pointer that can be used by the CPU to
access the given memory - on MIPS simply returning the physical address
as it does prior to this patch doesn't achieve that. Instead return a
pointer to the memory within (c)kseg0, which matches up consistently
with the (c)kseg1 pointer that uncached mappings return via ioremap.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Mon, 26 Sep 2016 18:28:56 +0000 (19:28 +0100)]
MIPS: Use ram_top, not bi_memsize, in arch_lmb_reserve
When calculating the region to reserve for the stack in
arch_lmb_reserve, make use of ram_top instead of adding bi_memsize to
CONFIG_SYS_SDRAM_BASE. This avoids overflow if the system has enough
memory to reach the end of the address space.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
MIPS: add handling for generic and EJTAG exceptions
Add exception handlers for generic and EJTAG exceptions. Most of
the assembly code is imported from Linux kernel and adapted to U-Boot.
The exception vector table will be reserved above the stack before
U-Boot is relocated. The exception handlers will be installed and
activated after relocation in the initr_traps hook function.
Generic exceptions are handled by showing a CPU register dump similar
to Linux kernel. For example:
EJTAG exceptions are checked for SDBBP and delegated to the SDBBP handler
if necessary. Otherwise the debug mode will simply be exited. The SDBBP
handler currently prints the contents of registers c0_depc and c0_debug.
This could be extended in the future to handle semi-hosting according to
the MIPS UHI specification.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Reviewed-by: Paul Burton <paul.burton@imgtec.com> Tested-by: Paul Burton <paul.burton@imgtec.com>
In order to set own exception handlers, a table with the exception
vectors must be built in DRAM and the CPU EBase register must be
set to the base address of this table.
Reserve the space above the stack and use gd->irq_sp as storage
for the exception base address.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
MIPS: add possibility to setup initial stack and global data in SRAM
This adds a new Kconfig option CONFIG_MIPS_INIT_STACK_IN_SRAM which
a SoC can select if it supports some kind of SRAM. Together with
CONFIG_SYS_INIT_SP_ADDR the initial stack and global data can be
set up in that SRAM. This can be used to provide a C environment
also for lowlevel_init().
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Clear cp0 status while preserving implementation specific bits.
Set bits BEV and ERL as the arch specification requires after
a reset or soft-reset exception.
Extend and fix initialization of watch registers. Check if additional
watch register sets are implemented and initialize them too.
Initialize cp0 count as early as possible to get the most
accurate boot timing.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
When booting from ROM, early exceptions can't be handled
properly. Instead of busy-looping give the developer the
possibilty to examine the situation. Invoke an UHI
exception operation which can be read as unhandled exception
by a hardware debugger if one is attached. If the debugger
doesn't support UHI, the exception is read as unexpected
breakpoint.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
MIPS: make inclusion of ROM exception vectors configurable
This adds a compile time option to include code for static
exception vectors. Static exception vectors are only needed,
when the U-Boot entry point is equal to the CPU reset exception
vector address. For instance this is the case when U-Boot is
used as ROM in Qemu or booted from parallel NOR flash. When
U-Boot is booted from RAM (e.g. loaded there by SPL), the
exception vectors need to be setup dynamically, which is done
in follow-up commits.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
projects / u-boot / log