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Add FDT driver for Renesas SCIF.
dts example:
soc: soc {
....
scif0: serial@1004b800 {
compatible = "renesas,scif-r9a07g043",
"renesas,scif-r9a07g044";
reg = <0 0x1004b800 0 0x400>;
interrupts = <412 IRQ_TYPE_LEVEL_HIGH>,
<414 IRQ_TYPE_LEVEL_HIGH>,
<415 IRQ_TYPE_LEVEL_HIGH>,
<413 IRQ_TYPE_LEVEL_HIGH>,
<416 IRQ_TYPE_LEVEL_HIGH>,
<416 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "eri", "rxi", "txi",
"bri", "dri", "tei";
clocks = <&cpg CPG_MOD R9A07G043_SCIF0_CLK_PCK>;
clock-names = "fck";
power-domains = <&cpg>;
resets = <&cpg R9A07G043_SCIF0_RST_SYSTEM_N>;
status = "disabled";
};
....
};
Signed-off-by: Lad Prabhakar <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Add Renesas SCIF driver.
Based on a patch in the BSP by Takeki Hamada
<[email protected]>
Link: https://github.com/renesas-rz/rz_opensbi/commits/work/OpenSBI-PMA
Signed-off-by: Lad Prabhakar <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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We fix the following semihosting compile error observed using LLVM:
lib/utils/serial/semihosting.c:158:12: error: result of comparison of constant -1 with expression of type 'char' is always true [-Werror,-Wtautological-constant-out-of-range-compare]
ret = ch > -1 ? ch : -1;
~~ ^ ~~
Fixes: 7f09fba86e43 ("lib: utils/serial: add semihosting support")
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Xiang W <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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We add RISC-V semihosting based serial console for JTAG based early
debugging.
The RISC-V semihosting specification is available at:
https://github.com/riscv/riscv-semihosting-spec/blob/main/riscv-semihosting-spec.adoc
Signed-off-by: Anup Patel <[email protected]>
Signed-off-by: Kautuk Consul <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Add Cadence UART driver
Signed-off-by: Jun Liang Tan <[email protected]>
Signed-off-by: Wei Liang Lim <[email protected]>
Reviewed-by: Andrew Jones <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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We update FDT support makefile to use kconfig for enabling/disabling.
To avoid compilation errors, we also enable FDT for each platform.
Signed-off-by: Anup Patel <[email protected]>
Tested-by: Andrew Jones <[email protected]>
Acked-by: Atish Patra <[email protected]>
Tested-by: Atish Patra <[email protected]>
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We update system drivers makefile to use kconfig for enabling/disabling
drivers. To avoid compile errors, we also enable appropriate system
drivers for each platform.
Signed-off-by: Anup Patel <[email protected]>
Tested-by: Andrew Jones <[email protected]>
Acked-by: Atish Patra <[email protected]>
Tested-by: Atish Patra <[email protected]>
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We update serial drivers makefile to use kconfig for enabling/disabling
drivers. To avoid compile errors, we also enable appropriate serial
drivers for each platform.
Signed-off-by: Anup Patel <[email protected]>
Tested-by: Andrew Jones <[email protected]>
Acked-by: Atish Patra <[email protected]>
Tested-by: Atish Patra <[email protected]>
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RISC-V doesn't generate exceptions on divide-by-zero, but the result,
all bits set, is not likely what people expect either. In all cases
where we divide by baudrate there's a chance it's zero (when the DT
it came from is "bad"). To avoid difficult to debug situations, leave
baudrate dependent registers alone when baudrate is zero, as, also in
all cases, it appears we can skip initialization of those registers
and still [hopefully] have a functioning UART.
Signed-off-by: Andrew Jones <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Signed-off-by: Andrew Jones <[email protected]>
Reviewed-by: Xiang W <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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While it doesn't look like there are any current cases of using
uninitialized data, let's zero all the UART data members to be
safe. Zero may not actually be better than a random number in
some cases, so all structure members should still be validated
before use, but at least zero is usually easier to debug than
some random stack garbage...
Signed-off-by: Andrew Jones <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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The age old version of Shakti UART was upgraded long back, but we missed
updating the driver in OpenSBI. The old version of UART is not supported
anymore, hence removed the inline comment which is also outdated now.
Signed-off-by: Prasanna T <[email protected]>
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Xiang W <[email protected]>
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Instead of having FDT serial driver list hard-coded in the C source,
we generate it using carray.sh at compile-time.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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reg-offset property is used for offset to apply to the mapbase
from the start of the registers in 8250 UART. In Linux kernel,
it has been handled in 8250 UART driver.
dt-bindings:
<linux>/Documentation/devicetree/bindings/serial/8250.yaml
Signed-off-by: Zong Li <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Initial commit of the xlnx-uartlite device and FDT support. This was
tested by running OpenSBI on a modified QEMU virt machine using the
xlnx-uartlite for serial.
Signed-off-by: Alistair Francis <[email protected]>
Reviewed-by: Xiang W <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Previously, it was rounded down and that gives suboptimal results when
non-standard clock sources or baud rates are used.
Signed-off-by: Jakub Luzny <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Using "void *" in arithmetic causes errors with strict compiler settings:
"error: pointer of type 'void *' used in arithmetic [-Werror=pointer-arith]"
Avoid these by calculating on "char *" where 1-byte data size is assumed.
Signed-off-by: Jukka Laitinen <[email protected]>
Reviewed-by: Dong Du <[email protected]>
Reviewed-by: Xiang W <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Some of RISC-V emulators provide HTIF at fixed base address so for
such emulators users have to hard-code HTIF base address in the
linker script.
To address this problem, we let users optionally provide fixed HTIF
base address via platform support (or device tree).
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Dong Du <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Add support for the UART provided by the LiteX SoC
framework (https://github.com/enjoy-digital/litex),
based on its FDT info (described in the Linux tree at
Documentation/devicetree/bindings/serial/litex,liteuart.yaml).
Signed-off-by: Gabriel Somlo <[email protected]>
Reviewed-by: Xiang W <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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This simply adds an helper to get fdt address which is more explicit than
sbi_scratch_thishart_arg1_ptr.
Signed-off-by: Alexandre Ghiti <[email protected]>
Reviewed-by: Xiang W <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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The value of the /chosen/stdout-path devicetree property is used to
determine the UART used by openSBI. According to the devicetree
specification the value may contain a hyphen, e.g.
chosen {
stdout-path = "/serial@f00:115200";
};
If the character ':' is present, it terminates the path of the device.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We should try other FDT drivers when we see SBI_ENODEV returned
by cold_init() of FDT driver.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
Reviewed-by: Xiang W <[email protected]>
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Synopsys DesignWare APB UART is seen on the StarFive JH7100 SoC.
Its programming interface is compatible with the existing 8250
UART driver. Simply add its compatible string to the driver makes
it work with the StarFive JH7100 SoC on a BeagleV board.
With this patch, the generic platform firmware can be used out of
the box on the BeagleV board.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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This patch adds support for the UART used by the NOEL-V processor.
Cobham Gaisler's NOEL-V RISC-V processor IP is available under GPL
and commercial license and is described in more detail at
https://www.gaisler.com/noelv.
Signed-off-by: Daniel Cederman <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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Instead of having console_putc() and console_getc() callbacks in
platform operations, it will be much simpler for console driver to
directly register these operations as device to the sbi_console
implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
Reviewed-by: Xiang W <[email protected]>
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Fix uart_putc implementation.
Due to a bug in the IP, this went unnoticed.
Use macros instead of magic numbers to make the code
more readable.
Signed-off-by: Vijai Kumar K <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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C-Class is a member of the SHAKTI family of processors from Indian
Institute of Technology - Madras(IIT-M).
It is an extremely configurable and commercial-grade 5-stage in-order
core supporting the standard RV64GCSUN ISA extensions.
https://gitlab.com/shaktiproject/cores/c-class/blob/master/README.md
We add OpenSBI support for Shakti C-class SoC.
Signed-off-by: Vijai Kumar K <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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We extend fdt_find_match() implementation by adding node offset
parameter which represents the first node to match from.
The improved fdt_find_match() can be used to find multiple
match nodes.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We add simple serial framework which will select and use serial driver
based on details in FDT passed by previous booting stage.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We should skip baudrate config for UART8250 and SiFive UART when
input frequency is zero.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
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This fixes various coding style issues found in the serial codes.
No functional changes.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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The drivers and libfdt are built as libsbiutils.a
instead of libplatsbi.a.
libsbiutils.a are not built per platform specific. Thus,
enable all drivers by default.
Signed-off-by: Atish Patra <[email protected]>
Acked-by: Anup Patel <[email protected]>
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Currently, platform/common contains platform/non-platform specific
common minimal drivers and libraries. This is helpful is all platforms
are built within opensbi framework.
Move them to lib/utils so that any external platform code also can
reuse the minimalistic drivers or other common libraries.
This patch doesn't introduce any functional changes.
Signed-off-by: Atish Patra <[email protected]>
Acked-by: Anup Patel <[email protected]>
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