Some framebuffers cannot be enabled/disabled, so make the corresponding
ops optional.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We have fb_enable and fb_disable which handle enabling of a
framebuffer, so use it instead of calling into the ops directly.
This gets the enable count straight.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
It was ported from linux v4.10. Like the kernel driver only
communication via I2C is supported.
It has only been tested with a SSD1306 and a 96x16 OLED display:
&i2c0 {
status = "okay";
ssd1306: oled@3c {
compatible = "solomon,ssd1306fb-i2c";
reg = <0x3c>;
reset-gpios = <&gpio1 1 0>;
solomon,height = <16>;
solomon,width = <96>;
solomon,page-offset = <0>;
solomon,com-invdir;
solomon,com-seq;
};
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Some drivers need an explicit sync method to flush the virtual
framebuffer to the display. It is called fb_flush().
fb_flush() gets called on fbc_putc, on fb_close and in the pattern cycle
in the fbtest command.
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This enables displaying text on e.g. a framebuffer console by issueing
echo -o /dev/fbconsole0 abc123
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Opening and closing consoles should be independent from setting them
active. This way it is possible to open e.g. a framebuffer console and
display text on it without showing stdout/stderr.
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This implements the vt100 show cursor command '[?25h' and the hide
cursor command '[?25l'. It is useful for displaying text on a non-active
(no stdout/stdin/stderr) console with 'echo'.
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Moving the cursor to x=2, y=2 with "\e[3;3H" on a 12x2 framebuffer
console lead to a barebox crash while drawing the cursor. If the
cursor position is out of bounds clip the cursor to the corresponding
edge.
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Ported from Linux v4.10.
This font is ideal for displaying a framebuffer console on a small display.
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
gl_draw_circle draws outside of the screen if the resolution is too low.
This lead to memory corruption. Check the dimensions before drawing.
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
info was errorneously allocated, but it really is a pointer to a fb_info
struct from the framebuffer. This fixes a memory leak.
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Commit 39f7a7ee8b ("i.MX: esdhc: Do not rely on CPU type for quirks")
made imx-esdhc dependent on OF and broke probing for all non-OF boards.
Since newer platforms like mx6 and vf610 are restricted to OF, the non-OF
probing only needs to distinguish mx5 vs earlier SoC.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
With commit 4ed5b778a5 ("i.MX: i2c: Add Vybrid support") i2c-fsl probe
returns -EINVAL for all non-OF boards.
Since newer planforms, especially vf610 are restricted OF-only it is safe to
assume "fsl,imx21-i2c" if CONFIG_OFDEVICE is not set.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch contains the barebox implementation for the ARM
"Power State Coordination Interface" (PSCI).
The interface is aimed at the generalization of code in the following
power management scenarios:
* Core idle management.
* Dynamic addition and removal of cores, and secondary core boot.
* big.LITTLE migration.
* System shutdown and reset.
In practice, all that's currently implemented is a way to enable the
secondary core one some SoCs.
With PSCI the Kernel is either started in nonsecure or in Hypervisor
mode and PSCI is used to apply power to the secondary cores.
The start mode is passed in the global.bootm.secure_state variable. This
enum can contain "secure" (Kernel is started in secure mode, means no
PSCI), "nonsecure" (Kernel is started in nonsecure mode, PSCI available)
or "hyp" (Kernel is started in hyp mode, meaning it can support
virtualization).
We currently only support putting the secure monitor code into SDRAM,
which means we always steal some amount of memory from the Kernel.
To keep things simple for now we simply keep the whole barebox binary in
memory
The PSCI support has been tested on i.MX7 only so far. The only
supported operations are CPU_ON and CPU_OFF.
The PSCI and secure monitor code is based on the corresponding U-Boot
code.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In barebox_non_pbl_start() we do not run at the address we are linked
at, so we must read linker variables using ld_var(). Since ld_var()
current is not available on arm64 we create two zero sized arrays,
one at the begin of the image and one at the end. The difference
between both is the image size we are looking for.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add support for ZII VF610 Dev based designs such as:
- VF610 Dev, revision B
- VF610 Dev, revision C
- CFU1, revision A
- SPU3, revision A
- SCU4 AIB, revision C
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Needed for compiling the i.MX7 warp board which already includes this
file.
This file is necessary because the upstream dtsi file currently assigns
MX7D_CLK_DUMMY to the gpt1 clock we use, so we won't get a meaningful
clock rate.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The i.MX7 has two pinmux controllers, the regular and the LPSR
controller. The LPSR pinmux controller doesn't have any sel_input
registers, instead they can be found in the regular pinmux controller.
This means whenever we want to apply the the sel_input setting for
the LPSR controller, we have to apply them to the regular controller
instead.
In barebox take the easy way out and just add the difference of the
two base addresses to the register offset. The same issue is present
in the Kernel aswell, but when the bootloader already configured
the pins correctly nobody notices when the Kernel sel_input setup
effectively is a no-op.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
It's essential that we always pass the same size value to
arm_mem_barebox_image(), otherwise the result will be inconsistent.
Pass arm_barebox_size instead of barebox_image_size as the latter
does not contain the max bss segment size.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reparent ethernet clocks so that they can be used by the
fec driver. The values are the same as U-Boot uses.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In the Kernel the bypass bits in the PLLs are now registered as
separate clocks and are no longer handled in the PLL code. In
barebox we haven't made this step and there currently seems to
be no reason to do so.
This means that the bypass bits are currently modified in both
the PLL driver and in the separate clocks which does not work
properly. Drop all the bypass clocks to let the bypass bits
be handled in the PLL driver exclusively.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The original clock code from Linux registers some gates at
base + 0x44e0, 0x44f0, 0x4500, 0x4510. These are not in the reference
manual and do not seem to have any effect on the hardware. The
reference manual lists clocks at 0x4700 and 0x4710 which Linux
does not control at all. These clocks really do have an effect on
the hardware and are needed for ethernet support. Register the
existing clocks rather than the made up clocks to support
ethernet.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sometimes a single software control knob controls multiple gates
in hardware. This patch adds support for shared gates which help
coping this situation. The first gate is registered with the hardware
gate as usual, the others are registered as shared gates which does
not have hardware control itself, but only switches the real hardware
gate.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
By the time the i.MX7 clock driver probes the fixed clocks which
are the roots of the clock tree are not yet present, so reparenting
especially to one of the fixed clocks does not work. Move the
tree setup to a later initcall when the fixed clocks are there.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Some clocks may only be modified when their parent clocks are enabled.
The kernel has the CLK_OPS_PARENT_ENABLE flag for this purpose.
Implement it for barebox aswell.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When reparenting a clock we have to make sure the new parent is enabled
when the clock was enabled on the old parent. Also we have to decrease
the old parents use counter when the clock was enabled.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Most i.MX6SL infrastructure is already covered in barebox by general i.MX6
support. Missing infrastructure provided in separate commits are
* SoC type detection
* Clock infrastructure
Add the missing fsl,imx6sl-mmdc, so it will not be catched by fsl,imx6q-mmdc
and the remaining bits and pieces to provide barebox i.MX6SL SoC support.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Import i.MX6SL clock infrastructure from linux clk-imx6sl.c
To save space, clocks beeing unlikely usefull for bootloader purposes
(SSI, SPDIF, EXTERN_AUDIO) were not imported.
Further, the fixup code from linux mainline commits
a49e6c4b8204 ("ARM: imx: add common clock support for fixup mux")
cbe7fc8aaeef ("ARM: imx: add common clock support for fixup div")
was ignored for this commit.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Jean-Christophe PLAGNIOL-VILLARD
Sascha Hauer
Bastian Stender
Alexander Kurz
Wadim Egorov
Andrey Smirnov