opensbi.git/platform, branch v1.1

platform: Add HSM implementation for Allwinner D1

2022-06-13T06:29:09Z

Allwinner D1 contains a "PPU" power domain controller which can automatically power down/up the CPU power domain. This power domain includes the C906 core along with its CLINT and PLIC. This HSM implementation supports non-retentive hart suspend by: 1) Saving/restoring state that is lost during hart suspend, 2) Performing cache maintenance before/after hart suspend, 3) Configuring wakeup sources before hart suspend, and 4) Asking the PPU to power down the hart when it enters WFI. Since this HSM implementation is for a single-core SoC, it does not need to worry about concurrency or saving multiple instances of state. Reviewed-by: Anup Patel Signed-off-by: Samuel Holland

lib: irqchip/plic: Factor out a context init function

2022-06-13T06:24:06Z

This simplifies both the callers and the callees by removing duplicated code and consolidating the error handling. It also fixes two bugs in the process: 1) ie_words was one too large when plic->num_src was a multiple of 32. 2) plic_set_ie takes a 32-bit mask, not a Boolean value, so the FPGA platforms previously only enabled one out of every 32 interrupts. Reviewed-by: Anup Patel Signed-off-by: Samuel Holland

platform: generic: add overrides for vendor extensions

2022-06-13T05:47:38Z

Allow the vendor_ext_check and vendor_ext_provider APIs of the generic platform to be overridden by other platforms Signed-off-by: Mayuresh Chitale Reviewed-by: Anup Patel

platform: generic: check if CPU node is enabled

2022-05-14T04:47:33Z

Ignore CPU nodes in FDT which are not enabled. Signed-off-by: Jan Remes Reviewed-by: Xiang W Reviewed-by: Anup Patel

platform: generic: Move Sifive platform overrides into own directory

2022-05-13T03:57:23Z

Let us move SiFive platform overrides for FU540 and FU740 into a separate directory so better maintainability. Other SoC vendors can also create their own directory under platform/generic. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

platform: generic: Generate platform override module list at compile-time

2022-05-13T03:57:18Z

Instead of having platform override module list hard-coded in the C source, we generate it using carray.sh at compile-time. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/serial: support 'reg-offset' property

2022-04-17T08:27:48Z

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: /Documentation/devicetree/bindings/serial/8250.yaml Signed-off-by: Zong Li Reviewed-by: Anup Patel

lib: utils/irqchip: Add FDT based driver for IMSIC

2022-02-15T15:07:05Z

We add simple FDT irqchip driver for IMSIC so that generic platform (and other FDT based platforms) can utilize common IMIC library. Signed-off-by: Anup Patel Signed-off-by: Anup Patel Reviewed-by: Atish Patra

platform: sifive_fu740: fix reset when watchdog is running

2022-01-21T16:14:57Z

When the watchdog is running the HiFive Unmatched board does not reboot properly and shuts down itself a few seconds after reboot, in the early stages of the u-boot loading. On a Linux kernel this happens when the da9063_wdt module is loaded. This does not happen if the module is unloaded before reboot or if the watchdog module is loaded with "stop_on_reboot=1". Fix that by stopping the watchdog before attempting to reset the board. This is done by zeroing the TWDSCALE field of CONTROL_D register, unless it was already set to 0. Reported-by: Tianon Gravi Signed-off-by: Aurelien Jarno Reviewed-by: Nikita Shubin Tested-by: Nikita Shubin Reviewed-by: Anup Patel

platform: sifive_fu740: do not use a global in da9063_reset/shutdown

2022-01-21T16:11:33Z

da9063_reset() and da9063_shutdown() take the chip address in argument (like similar functions), but in practice use the da9063 global struct instead. Fix that. Signed-off-by: Aurelien Jarno Reviewed-by: Nikita Shubin Reviewed-by: Anup Patel Reviewed-by: Xiang W