The memory reference code takes a very long time to 'train' its SDRAM
interface, around half a second. To avoid this delay on every boot we can
store the parameters from the last training sessions to speed up the next.
Add an implementation of this, storing the training data in CMOS RAM and
SPI flash.
Signed-off-by: Simon Glass <sjg@chromium.org>
Correct the SPI flash compatible string, add an alias and specify the
position of the MRC cache, used to store SDRAM training settings for the
Memory Reference Code.
Signed-off-by: Simon Glass <sjg@chromium.org>
The existing IP checksum function is only accessible to the 'coreboot' cpu.
Drop it in favour of the new code in the network subsystem.
Signed-off-by: Simon Glass <sjg@chromium.org>
Various minor code format issues are fixed in start16.S:
- U-boot -> U-Boot
- 32bit -> 32-bit
- Use TAB instead of SPACE to indent
- Move the indention location of the GDT comment block
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
On some x86 processors (like Intel Quark) the MTRR registers are not
supported. This is reflected by the CPUID (EAX 01H) result EDX[12].
Accessing the MTRR registers on such processors will cause #GP so we
must test the support flag before accessing MTRR MSRs.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
CPUID (EAX 01H) returns MTRR support flag in EDX bit 12. Probe this
flag in x86_cpu_init_f() and save it in global data.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
arch/x86/cpu/mtrr.c has access to the U-Boot global data thus
DECLARE_GLOBAL_DATA_PTR is needed.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
We shouldn't assume that the VGA ROM can always be loaded at c0000. This
is only true on x86 machines.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
These boards are still non-generic boards.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Reinhard Arlt <reinhard.arlt@esd-electronics.com>
These boards are still non-generic boards.
It is a good thing that we can drop board-specific hack code
from drivers/mtd/nand/nand_base.c
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Stefan Roese <sr@denx.de>
Cc: Andrea "llandre" Marson <andrea.marson@dave-tech.it>
These boards are still non-generic boards.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Dave Liu <daveliu@freescale.com>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Match the suffixes of SG_MEMCONF_* macros with SZ_* macros defined
by <linux/sizes.h> for readability.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
The inlining is done by GCC when needed, there is no need to do it
explicitly. Furthermore, the inline keyword does not force-inline
the code, but is only a hint for the compiler.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
For PH1-Pro4, the bit 6 of the IECTRL must be set. It is the only
available bit in this register. There is no effect of the write
access to the other bits.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
The assembly directive ".rept ... .endr" allows us to write the
init_page_table much shorter. To make things further simpler,
set the text and stack area as Normal Memory, and the other sections
as Device attribute.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
The DDR PHY training function, ddrphy_prepare_training() would not
work if compiled with GCC 4.9.
The struct ddrphy (arch/arm/include/asm/arch-uniphier/ddrphy-regs.h)
is specified with __packed because it represents a hardware register
mapping, but it turned out to cause a problem on GCC 4.9.
If -mno-unaligned-access is specified (yes, it is in
arch/arm/cpu/armv7/config.mk), GCC 4.9 is aware of the
__attribute__((packed)) and generates extra instructions to perform
the memory access in a way that does not cause unaligned access.
(Actually it is not need here because the register base, the first
argument of the ddrphy_prepare_training(), is always given with a
4-byte aligned address.)
Anyway, as a result, readl() / writel() is divided into byte-wise
accesses. The problem is that this hardware only accepts 4-byte
register access. Byte-wise accesses lead to unexpected behavior.
There are some options to avoid this problem.
[1] Remove -mno-unaligned-access
[2] Add __aligned(4) along with __packed to struct ddrphy
[3] Remove __packed from struct ddrphy
[1] solves the problem for ARMv7, but it does not for pre-ARMv6 and
ARMv6-M architectures where -mno-unaligned-access is default.
So, [1] does not seem reasonable in terms of code portability.
Both [2] and [3] work well, but [2] seems too much. All the members
of struct ddrphy have the u32 type. No padding would be inserted
even if __packed is dropped.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Tom Rini <trini@ti.com>
Hookup OTG USB controller support and enable the otg controller + USB-keyb
on various tablets.
This allows tablet owners to interact with u-boot without needing to solder
a serial console onto their tablet PCB.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Testing has shown that on sun4i the display backend engine does not have
deep enough fifo-s causing flickering / tearing in full-hd mode due to
fifo underruns. On sun4i use the display frontend engine to do the dma from
memory, as the frontend does have deep enough fifo-s.
As added advantage of this is that it results in much better memory bandwidth
as it reduces the amount of dram bank switches, for more details see:
http://ssvb.github.io/2014/11/11/revisiting-fullhd-x11-desktop-performance-of-the-allwinner-a10.html
Note that this changes the pipeline searched for in the simplefb node, we can
get away with doing this now, since no kernel has yet shipped with simplefb
dtb nodes, and I will make sure to get a simplefb node with the new pipeline
into 3.19 before it ships.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
While working on adding more boards I noticed that we lack a config for
the 512M cubieboard, and that some of the new boards which I want to add also
have 512M and 1G variants, rather then adding 2 defconfig's for all of these,
lets switch the exising boards which have both a 512M and 1024M variant over
to the sun4i dram autoconfig code.
This also drops the foo_RAMSIZE_defconfig variants of boards where we currently
have 2 separate configs already.
Note:
1) The newly introduced CONFIG_DRAM_EMR1 kconfig value is not used with
a value other then its default for now, but we need this to be configurable
to support some new boards with auto dram config.
2) We always set all CONFIG_DRAM_foo values in defconfigs, even if they match
the defaults, this is done to make it more clear what values are used for a
certain board.
This has been tested on a Mele A1000, Mini-X and a Cubieboard, all 1G
variants, the dram autoconfig code has also been tested on a 512M mk802
(a defconfig for the mk802 is added in a later patch).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
The clocks on the A80 are hooked up slightly different, add support for this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Add initial sun9i (A80) clock setup support, enough to get the uart + mmc
going.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Add a headerfile with all the base addresses from the sun9i blocks.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
sun4i - sun8i have (aprox.) the same iomem layout, but sun9i is quite
different, so add a wrapper cpu.h which includes the right mach specific
cpu_sun#i.h based on mach, like we already do with clock.h and dram.h .
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Which pll-s are available depends on the machine type, move the
clock_get_pllX / clock_set_pllX prototypes to the clock_sun?i.h header files
so that we only declare what is actually available. e.g. clock_get_pll5p()
is not available on sun6i / sun8i, and with sun9i we get a completely
different set of plls.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
As the comment says now that we have SPL support this is no longer necessary,
as PLL6 is already setup with the exact same parameters by the SPL.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
While running some tests with an Olinuxino-A13-Micro + a 7" Olimex LCD module
I noticed that the screen flickered. This is caused by the lcd display clk
phase reg value being set to 0, where it should be 1 in this setup.
This commit adds a Kconfig option for the lcd display clk phase, so that we
can set it per board. This defaults to 1, because looking at all the fex
files in sunxi-boards, that is by far the most used value.
This commit updated the Ippo and MSI Primo73 tablet defconfigs to override the
default of 1 with 0, as that is the correct value for those tablets, this
keeps the register settings the same as before this commit.
The Olinuxino-A13 defconfigs are not updated, changing the register setting
for these boards from 0 to 1, this is intentional.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2 recent sunxi changes have removed the usage of lowlevel_init by moving some
code around and then setting CONFIG_SKIP_LOWLEVEL_INIT.
This is problematic for 2 reasons:
1) It does not just stop s_init from being called, it also stops
cpu_init_cp15 from getting called, which is undesirable.
2) We want u-boot.bin to be usable standalone, without SPL, some people e.g.
use an upstream u-boot.bin together with Allwinner's boot0 loader. So
u-boot.bin must (re)initialize the gpios, timer, etc.
This commit restores the lowlevel_init / s_init usage, while keeping the
changes to no longer use the global-data (gd) struct in the SPL.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This patch initializes VSC9953 L2 Switch for boards that have
CONFIG_VSC9953 defined in their config file.
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@freescale.com>
Implement MIPS specific setup of the gd_t structure to support
pre-relocation malloc. If CONFIG_SYS_MALLOC_F_LEN is specified,
a memory area will be reserved after the initial stack area and
the gd->malloc_base pointer will be initialized.
After this patch the new driver model can be used on MIPS.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Support the existing config option CONFIG_SYS_INIT_SP_ADDR on
MIPS. This allows to move the initial stack to other places
than the beginning of RAM.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
