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The _main call is not supposed to return at all: don't link the
branch.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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Implement the weak board_return_to_bootrom() function so that when
enabling the spl_bootrom.c driver, one can make use of usbboot on
spear platforms. All necessary information to return to the BootROM
are stored in the BootROM's stack. The SPL stack pointer is reset so
we save the BootROM's stack pointer into the SPL .data section.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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There is no reason to do the few spear-related initialization, in a
different procedure than 'reset'. Spare one branching and get a linear
code flow by removing this indirection.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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The link register is stored in R14. ARM assembly code allows to use
the 'lr' name to reference it instead of 'r14' which is not very
meaningful. Do the substitution to ease the reading.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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Quoting ARM "RealView Compilation Tools Assembler Guide v4.0":
PUSH and POP are synonyms for STMDB and LDM (or LDMIA), with
the base register sp (r13), and the adjusted address written
back to the base register.
PUSH and POP are the preferred mnemonic in these cases.
Let's follow this recommandation to ease the reading and substitute
LDMIA/STMDB operations with PUSH/POP mnemonics.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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Before cleaning a bit further the spear/start.S file, apply a few
cosmetic changes: capital letters, comment indentation and small
rewriting.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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This comment describes the board state at the moment where we enter
the SPL. The description is entirely wrong; re-write it to fit the
reality.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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SPL BSS lies in SRAM and is actually initialized to 0 by the SPL in
arch/arm/lib/crt0.S:_main(), which is called by cpu_init_crit.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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Rename Xloader as SPL in comments.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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It is clearly stated that board_init_f should *not* call
board_init_r. Indeed, board_init_f should return. The code will
continue through arch/arm/lib/crt0.S which will do more setup before
calling board_init_r.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Stefan Roese <sr@denx.de>
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Add basic PCI endpoint sandbox testing.
Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Add a dummy PCI endpoint for sandbox.
Supporting only a single function, it allows setting
and reading header configuration.
Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Reduce Auto Voltage Scaling VDD limit when core frequency is lower than
1600MHz. This reduces core voltage level from 1.25V to 1.15V, which
saves power.
The code is taken from Marvell's U-Boot 2013.01 revision 18.06.
Reviewed-by: Chris Packham <judge.packham@gmail.com>
Tested-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>
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KM Kirkwood boards now implement the driver model for its SPI flash
interface. Therefore, the old board specific claim and release functions
can be deleted. The preprocessor definition CONFIG_SYS_KW_SPI_MPP is yet
unused as well. All its appearances and dependencies are removed in the
kirkwood_spi driver, header files and finally the configuration whitelist.
Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
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In order to migrate the SPI flash interface to the driver model, the SPI
configuration needs to be added in the KM Kirkwood device tree file.
Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
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As preparation for the upcoming transferring of configurations from header
files to Kconfig, a common Kconfig file for all KM boards was created. For
the moment, it only sources the other three, more specific, Kconfig files.
Therefore, the architecture Kconfig files now include the common Kconfig
file. Also, the configuration selection for KM boards was moved from the
architecture Kconfig files to the board specific Kconfig files.
Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Cc: Mario Six <mario.six@gdsys.cc>
Cc: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Signed-off-by: Stefan Roese <sr@denx.de>
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Enable SATA peripherals in SPL to allow boot from SATA.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
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Add the required Kconfig and macro definitions to allow boot from SATA
on Armada 38x systems.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
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SPL does not initialize mbus_dram_info. Don't change the ahci mbus
settings of the ROM. This allows the ahci to work in SPL.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
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This test is built on top of the existing swap_case driver. It adds EA
capability structure support to swap_case and uses that to map BARs.
BAR1 works as it used to, swapping upper/lower case. BARs 2,4 map to a
couple of magic values.
Signed-off-by: Alex Marginean <alexm.osslist@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
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Add a test to check the management of the U-boot relocation properties
for device tree SPL generation (fdtgrep result) and platdata:
- 'dm-pre-proper' and 'dm-tpl' not included in SPL
- 'dm-pre-reloc' and 'dm-spl' included in SPL
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This struct is not defined in this header file. Add a forward declaration
so that it can be included in any context.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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Since the SPI nor conversion, 'sf probe' does not work on sandbox. Fix
this by using the expected compatible string in the flash node.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: cd35365762 (mtd: sf_probe: remove spi-flash compatible)
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Add a memory node which indicates the size of sandbox memory.
Signed-off-by: Simon Glass <sjg@chromium.org>
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When cross-compiling, sometimes sdl-config must come from a different path
from the default. Add a way to override it, by adding SDL_CONFIG to the
environment before building U-Boot.
Signed-off-by: Simon Glass <sjg@chromium.org>
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This function is used for both SPL and TPL. Add a comment to that effect.
Signed-off-by: Simon Glass <sjg@chromium.org>
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We normally want to load U-Boot from SPL, but if a board wants to do
something else, it is currently not possible since the standard loader
has the top priority. Lower it to allow other SPL_LOAD_IMAGE_METHOD()
declarations to override it.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present this returns but it seems better to just exit sandbox
immediately.
Signed-off-by: Simon Glass <sjg@chromium.org>
reset
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At present 'sf probe' does not work since it cannot find SPI bus 0. Add
an alias to correct this, now that we no-longer have the --spi_sf option.
Signed-off-by: Simon Glass <sjg@chromium.org>
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At present sandbox and sandbox64 have duplicated nodes. This is hard to
maintain since changes in one need to be manually added to the other.
Create a common file to solve this problem.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Various nodes have been added and adjusted with sandbox. Move these
changes over to sandbox64.dts to keep these in sync.
Signed-off-by: Simon Glass <sjg@chromium.org>
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The base of DRAM will be changed for the next generation SoC.
The addresses needed for booting the kernel should be shifted
according to the DRAM base.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The base of DRAM will be changed for the next generation SoC.
Set the base address to the 'dram_base' environment variable, which
will be useful for scripting.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The base of DRAM will be changed for the next generation SoC.
To support it along with existing SoCs in the single defconfig,
set 'loadaddr' at boot-time by adding the offset to the DRAM base.
CONFIG_SYS_LOAD_ADDR is still hard-coded for compilation, but the
value from environment variable 'loadaddr' should be used.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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For consistency with a function that will be added.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The base address of DRAM was 0x80000000 for all the ARM SoCs of this
family in the past. It will be changed to 0x20000000 for a planned new
SoC. To support multiple SoCs by the single uniphier_v8_defconfig, the
base must be run-time determined.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Currently, mem_map is hard-coded, and it worked well until the last
SoC. For a planned new SoC, the addresses of peripherals and DRAM
will be changed. Set it up run-time.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Make this function work with any channel being empty.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Currently, dram_init() code relies on the fact the DRAM size
configuration exists in the SG_MEMCONF register.
This will no longer be true for a planned new SoC, which will
replace SG_MEMCONF with a different register.
Refactor the hook in a more generic way.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Until the last SoC, the register addresses have been hard-coded because
they are always constant. For a planned new SoC, the register bases
will be completely changed. I insist on supporting multiple SoCs/boards
by a single defconfig (uniphier_v8_defconfig) since duplicating similar
defconfig files is a maintenance burden. The base addresses must be
fixed-up at run-time somehow.
Previously, the board init code identified the SoC by reading out the
SG_REVISION register. This is much easier than parsing DT.
You cannot do it any more because the base address of SG will be
changed. The SG_REVISION register exists to read out the SoC ID, but
you never know its address before identifying the SoC. Oh well.
So, the possible solution is to parse the DT, and find out the node
with "*-soc-glue" compatible string. Then, sg_base is set to the value
of the "reg" property. The sc_base is set up likewise.
It is worth noting a pit-fall. Having sc_base and sg_base in the global
scope will make the life easier, but the global variables are poorly
supported before the relocation. In fact, the .bss section overwraps
with DT. Allocating them in the .bss section would break DT. So, I gave
dummy initializers to assign them in the .data section.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The SC_* macros represent the address of SysCtrl registers.
For a planned new SoC, its base address will be changed.
Turn the SC_* macros into the offset from the base address.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The SG_* macros represent the address of SoC-glue registers.
For a planned new SoC, its base address will be changed.
Turn the SG_* macros into the offset from the base address.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The planned new SoC supports the SD boot mode. Detect and display it.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The planned new SoC does not have SBC (System Bus Controller) block.
Make boot_is_swapped() an optional hook.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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If CONFIG_MICRO_SUPPORT_CARD is enabled, U-Boot initialize SBC
(System Bus Controller), which may not be really necessary.
Check the "socionext,uniphier-system-bus" node in DT run-time.
If and only if it is found and its "status" property is okay,
initialize the SBC block.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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If CONFIG_MICRO_SUPPORT_CARD is enabled, U-Boot tries to get access
to the devices on the support card, which may not actually exist.
Check the DT and search for the on-board devices run-time. If the
nodes are not found in DT, then disable the code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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This file calls readl(), so needs to include <linux/io.h>.
Currently, it relies on someone else including it.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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This is boolean logic.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Now that 64-bit SoCs of this SoC family no longer support SPL,
this Makefile can be slightly simpler.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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The .boot_device_fixup() is only called by SPL.
Now that 64-bit SoCs of this SoC family no longer support SPL,
debug-uart-ld20.c is never compiled.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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