opensbi.git/lib/utils/reset, branch v1.0

lib: utils/reset: separate driver init func

2021-11-12T04:46:23Z

Move driver init code to separate function, so it can be reused elsewhere. Tested-by: Heinrich Schuchardt Reviewed-by: Alexandre Ghiti Tested-by: Alexandre Ghiti Signed-off-by: Nikita Shubin

lib: utils/reset: add priority to gpio reset

2021-11-12T04:45:54Z

Make gpio_system_reset_check return priority instead of just true/false. Make default 128 priority for reset/shutdown. Tested-by: Heinrich Schuchardt Reviewed-by: Alexandre Ghiti Tested-by: Alexandre Ghiti Signed-off-by: Nikita Shubin

lib: sbi: error handling in fdt_reset_init()

2021-11-08T05:20:48Z

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 Reviewed-by: Dong Du Reviewed-by: Anup Patel

include: sbi_utils: Introduce an helper to get fdt base address

2021-11-02T05:53:16Z

This simply adds an helper to get fdt address which is more explicit than sbi_scratch_thishart_arg1_ptr. Signed-off-by: Alexandre Ghiti Reviewed-by: Xiang W Reviewed-by: Anup Patel

lib: utils/reset: Register separate GPIO system reset devices

2021-11-02T03:44:11Z

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 Reviewed-by: Dong Du

lib: utils/irqchip: Automatically delegate T-HEAD PLIC access

2021-10-21T04:36:00Z

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 Reviewed-by: Bin Meng Reviewed-by: Anup Patel

lib: sbi: convert reset to list

2021-10-11T04:29:29Z

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 Reviewed-by: Anup Patel

lib: utils: identify supported GPIO reset methods

2021-10-01T04:54:43Z

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 Reviewed-by: Anup Patel

lib: utils/reset: use sbi_timer_mdelay() in gpio reset driver

2021-09-26T14:22:18Z

We should use sbi_timer_mdelay() instead of custom gpio_mdelay() in the gpio reset driver. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Xiang W

lib: utils/reset: Add a sunxi watchdog reset driver

2021-09-14T07:54:53Z

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 Reviewed-by: Anup Patel