| Age | Commit message (Collapse) | Author |
|---|
|
Move driver init code to separate function, so it can be reused
elsewhere.
Tested-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Tested-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
|
|
Make gpio_system_reset_check return priority instead of just true/false.
Make default 128 priority for reset/shutdown.
Tested-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Tested-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
|
|
The initialization of a reset driver may fail for various reasons, like
a PMIC based reset driver not finding the required I2C driver. The return
code of the init routine may take other error values than -ENODEV.
If the initialization of a reset driver fails, this should not lead to the
board hanging. It is enough that the reset driver does not call
sbi_system_reset_add_device() to avoid invoking the driver for a device
that could not be initialized.
Change the return type of fdt_reset_init() to void.
Print a message if an error occurs.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Dong Du <Dd_nirvana@sjtu.edu.cn>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
This simply adds an helper to get fdt address which is more explicit than
sbi_scratch_thishart_arg1_ptr.
Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
Now that sbi_system support multiple system reset devices, we should
register separate devices for GPIO restart and GPIO poweroff because
DT describes these as separate devices with different compatible
strings.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Dong Du <Dd_nirvana@sjtu.edu.cn>
|
|
The T-HEAD PLIC implementation requires setting a delegation bit
to allow access from S-mode. Now that the T-HEAD PLIC has its own
compatible string, set this bit automatically from the PLIC driver,
instead of reaching into the PLIC's MMIO space from another driver.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
To support different handlers for different types of resets, we are
adding a sbi_list of restart handlers.
Instead of sbi_system_reset_set_device we use
sbi_system_reset_add_device to reflect the actual meaning.
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
The GPIO reset driver supports reset and poweroff. But not all boards
support both. gpio_system_reset_check() must detect this situation.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
We should use sbi_timer_mdelay() instead of custom gpio_mdelay() in
the gpio reset driver.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Xiang W <wxjstz@126.com>
|
|
One of the watchdogs in the D1 SoC provides a "soft reset" function,
which allows software to immediately reset the entire SoC. Add a driver
so it can implement the SBI system reset function.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
In preparation for adding a new fdt_reset driver, ensure the existing
lists are sorted alphabetically.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
We add "index" parameter to fdt_get_node_addr_size() API so that
calling function can specify index of desired register set. This
will allow fdt_get_node_addr_size() to handle DT nodes with
multiple register sets.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
|
|
The maximum address and size encoded in DT are 64-bit numbers, so we
should use uint64_t for 'addr' and 'size' in fdt_get_node_addr_size().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
The generic GPIO reset driver has two entries in the match table:
"gpio-poweroff", "gpio-reset". Only the first entry is considered by
fdt_reset_init().
Define "gpio-poweroff" and "gpio-reset" as compatibility strings of two
separate reset drivers. They still can share code.
Fixes: e3d6919d10d7 ("lib: utils/reset: Add generic GPIO reset driver")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
|
|
The value of variable current_driver is unused. Remove the variable.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
|
|
We add generic GPIO reset driver inspired from gpio-restart
and gpio-poweroff drivers of Linux kernel.
Signed-off-by: Green Wan <green.wan@sifive.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
|
|
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 <green.wan@sifive.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
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 <xypron.glpk@gmx.de>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
We should try other FDT drivers when we see SBI_ENODEV returned
by cold_init() of FDT driver.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Xiang W <wxjstz@126.com>
|
|
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 <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
|
|
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 <guoren@linux.alibaba.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
|
|
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 <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
|
|
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 <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
|
|
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 <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
|
