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

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: sbi: Add timer frequency to struct sbi_timer_device

2021-09-26T14:22:10Z

Generic mdelay() and udelay() functions can be provided by the sbi_timer framework if timer frequency is available in the timer instance provided by the platform support or timer driver. This patch adds timer frequency (timer_freq) member in the struct sbi_timer_device for above purpose. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Xiang W

lib: utils/timer: Simplify MTIMER synchronization

2021-08-14T03:37:42Z

We simplify MTIMER synchronization as follows: 1) Detect MTIMER devices with unique (or non-shared) MTIME register at boot-time 2) Select first MTIMER device with no associated HART as our reference MTIMER device 3) Only synchronize MTIMER devices with unique (or non-shared) MTIME register using reference MTIMER device 4) Directly update the MTIME register at time of synchronization because MTIME is a read/write register. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/timer: Allow ACLINT MTIMER supporting only 32-bit MMIO

2021-08-14T03:32:44Z

We can have ACLINT MTIMER devices which only support 32-bit MMIO accesses on RV64 system so this patch adds a boolean DT property "mtimer,no-64bit-mmio" to detect this from MTIMER DT node. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/fdt: Extend fdt_parse_aclint_node() function

2021-08-14T03:32:39Z

The fdt_parse_aclint_node() is used to parse DT node for SiFive CLINT, ACLINT MTIMER, and ACLINT MSWI devices. The ACLINT MTIMER has undergone following changes: 1) MTIMER DT node now requires separate addresses in for MTIME register and MTIMECMPx registers in the reg DT property. 2) MTIMER DT node might have no interrupts-extended DT property when the MTIMER device has no associated HARTs (i.e. the MTIMER device has no MTIMECMPx registers) This patch extends fdt_parse_aclint_node() to handle above mentioned changes in ACLINT MTIMER DT bindings. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/timer: Allow separate base addresses for MTIME and MTIMECMP

2021-08-14T03:32:33Z

We extend the ACLINT library to support separate base addresses for MTIME and MTIMECMP registers. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/timer: Add FDT based ACLINT MTIMER driver

2021-06-24T04:09:53Z

We add a new FDT based ACLINT MTIMER driver which works for both CLINT device and standalone ACLINT MTIMER device. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Xiang W

lib: utils: Add FDT parsing API common for both ACLINT and CLINT

2021-06-24T04:09:48Z

We add fdt_parse_aclint_node() which can parse both ACLINT and CLINT DT nodes. This means fdt_parse_clint_node() is not required anymore so we remove it as well. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Xiang W

lib: utils/timer: Add ACLINT MTIMER library

2021-06-24T04:08:47Z

We add common ACLINT MTIMER library similar to the CLINT library so that OpenSBI platforms can use it. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Xiang W

lib: utils: Try other FDT drivers when we see SBI_ENODEV

2021-05-24T10:19:21Z

We should try other FDT drivers when we see SBI_ENODEV returned by cold_init() of FDT driver. Signed-off-by: Anup Patel Reviewed-by: Atish Patra Reviewed-by: Xiang W