starfive-tech/opensbi.git/lib, branch starfive-dubhe

lib: utils: support both of gpio-poweroff, gpio-reset

2021-07-27T11:56:54+00:00

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 Reviewed-by: Atish Patra

lib: utils: remove unused variable in fdt_reset_init

2021-07-27T11:46:02+00:00

The value of variable current_driver is unused. Remove the variable. Signed-off-by: Heinrich Schuchardt Reviewed-by: Atish Patra

lib: utils/reset: Add generic GPIO reset driver

2021-07-17T08:42:07+00:00

We add generic GPIO reset driver inspired from gpio-restart and gpio-poweroff drivers of Linux kernel. Signed-off-by: Green Wan Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/gpio: Add minimal SiFive GPIO driver

2021-07-17T08:26:42+00:00

We add a minimal SiFive GPIO driver so that we can do GPIO based system power-off and reset. Signed-off-by: Green Wan Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/gpio: Add simple FDT based GPIO framework

2021-07-17T08:11:17+00:00

We add a simple FDT based GPIO framework which is built on top of generic GPIO library. The phandle of FDT GPIO chip DT node is treated as unique GPIO chip ID required by the generic GPIO library. The FDT based GPIO chip drivers will be probed on-demand from fdt_gpio_pin_get() called by the GPIO client drivers. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/gpio: Add generic GPIO configuration library

2021-07-17T06:12:51+00:00

We add generic GPIO configuration library which is independent of hardware description format (FDT or ACPI). The OpenSBI platform support or GPIO drivers can register GPIO chip instances which can be discovered and used by different GPIO clients. Each GPIO chip instance has a unique ID which can be used by GPIO clients to lookup GPIO chip instance. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/fdt: Add fdt_parse_phandle_with_args() API

2021-07-17T06:10:49+00:00

The libfdt project does not have a generic API to parse phandle with args from a DT node so we add fdt_parse_phandle_with_args() for this purpose. This new API will be useful to FDT based drivers. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: Drop dependency on libgcc by importing part of FreeBSD's libquad

2021-07-11T15:31:44+00:00

We only need libgcc for 64-bit division on RV32. Whilst GCC toolchains bundle libgcc, Clang toolchains tend not to ship libclang_rt.builtins given every compiler is a cross-compiler for every target and so you would need a silly number of builds of it, with only the native library available; only vendor-provided Clang toolchains specifically for bare metal cross-compiling are likely to provide it. Thus, import part of FreeBSD's implementation of the division support functions needed and stop linking against libgcc. Signed-off-by: Jessica Clarke Reviewed-by: Anup Patel Tested-by: Anup Patel

lib: sbi: Fix sbi_pmu_exit() for systems not having MCOUNTINHIBIT csr

2021-07-11T09:01:21+00:00

The sbi_pmu_exit() crashes on systems not having MCOUNTINHIBIT csr so to fix this we check SBI_HART_HAS_MCOUNTINHIBIT feature in sbi_pmu_exit() and do nothing if it is not available. Fixes: 13d40f21d588 ("lib: sbi: Add PMU support") Signed-off-by: Anup Patel

lib: sbi: Improve TLB function naming

2021-07-11T05:08:26+00:00

Follow the standard conventon for static function names: All global functions should be start with sbi__ All static functions should be start with _ Reviewed-by: Anup Patel Signed-off-by: Atish Patra