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Unify all the file and function names of 'sifive_test' device, to use
the same prefix. This is also a preparatory patch for upcoming sifive
reset device.
Signed-off-by: Green Wan <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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If property csr-copy does not exist, fdt_getprop() will return NULL and cnt
will have a random value from the stack.
Call clone_csrs() only if cnt is initialized to a non-zero value.
Fixes: 49e422c5ad7a ("lib: utils: reset: Add T-HEAD sample platform reset driver")
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Anup Patel <[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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Instead of having system_reset_check() and system_reset() callbacks
in platform operations, it will be much simpler for reset driver to
directly register these operations as a device to the sbi_system
implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
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This driver is for T-HEAD test chip, fpga. It could work with
all T-HEAD riscv processors: C9xx series.
example1: (Using io-regs for reset)
reset: reset-sample {
compatible = "thead,reset-sample";
plic-delegate = <0xff 0xd81ffffc>;
entry-reg = <0xff 0xff019050>;
entry-cnt = <4>;
control-reg = <0xff 0xff015004>;
control-val = <0x1c>;
csr-copy = <0x7f3 0x7c0 0x7c1 0x7c2 0x7c3 0x7c5 0x7cc>;
};
example2: (Using csr-regs for reset)
reset: reset-sample {
compatible = "thead,reset-sample";
plic-delegate = <0xff 0xd81ffffc>;
using-csr-reset;
csr-copy = <0x7c0 0x7c1 0x7c2 0x7c3 0x7c5 0x7cc
0x3b0 0x3b1 0x3b2 0x3b3
0x3b4 0x3b5 0x3b6 0x3b7
0x3a0>;
};
example3: (Only delegate plic enable to S-mode)
reset: reset-sample {
compatible = "thead,reset-sample";
plic-delegate = <0xff 0xd81ffffc>;
};
After this patch, all T-HEAD c9xx would use platform/generic with fw_dynamic
as default:
CROSS_COMPILE=riscv64-linux-gnu- PLATFORM=generic FW_PIC=y /usr/bin/make
The platform/thead will be deprecated.
Signed-off-by: Guo Ren <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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To implement the SBI SRST extension, we need two platform operations
for system reset:
1) system_reset_check() - This operation will check whether given
reset type and reason are supported by the platform
2) system_reset() - This operation will do the actual platform
system reset and it will not return if reset type and reason
are supported by the platform
This patch updates system reset related code everywhere as-per above.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[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 reset framework which will select and use reset 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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