opensbi.git/lib/utils/timer, branch v1.5

lib: utils/timer: Skip initialize timer when dt is not enabled

2024-06-13T13:01:40Z

When the dt node has a status property and the value is not ok or okay, skip initializing timer. Signed-off-by: Xiang W Reviewed-by: Anup Patel

lib: utils/timer: Optimize current hart scratch access

2024-04-05T12:04:24Z

The address of the local scratch area is stored in each hart's mscratch CSR. It is more efficient to read the CSR than to compute the address from the hart ID. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils/timer: mtimer: only use regname for aclint

2023-12-27T06:27:33Z

The parser will fail if the timer is clint timer and has regname property. As the regname is only meaningful for aclint, it is more robust to only check regname for aclint timer. Fixes: 6112d58 ("lib: utils/fdt: Allow to use reg-names when parsing ACLINT") Signed-off-by: Inochi Amaoto Reviewed-by: Anup Patel

lib: utils/timer: mtimer: add separate T-Head C9xx CLINT mtimer compatible

2023-11-16T11:23:48Z

T-HEAD allows soc vendor to map the mtimer and mswi of C9xx clint on different address, which may cause a misuse if use the same compatible string, add a new timer compatible string to avoid this. Signed-off-by: Inochi Amaoto Link: https://lore.kernel.org/linux-riscv/6e48cbe5e60f9ada2fd1fe58e803e127f1a678e5.1696433229.git.unicorn_wang@outlook.com/ Reviewed-by: Guo Ren Reviewed-by: Anup Patel

lib: utils/timer: Allow ACLINT MTIMER driver to setup quirks

2023-11-16T11:20:42Z

The quirks checking will cause ACLINT step into a CLINT code path, this is not expected when ACLINT needs custom quirks. Add a new quirk to identify custom ACLINT, and apply the general quirks after applying CLINT specific quirks. Signed-off-by: Inochi Amaoto Reviewed-by: Anup Patel

lib: utils: timer/ipi: Update memregion flags for PLMT and PLICSW

2023-10-06T11:23:26Z

This patch adds unspecified permission flags for the PLICSW region and updates the permission of the PLMT region. With this update, both regions will become M-mode only read/write regions in the root domain. Domain0 Region00: 0x00000000f0300000-0x00000000f0300fff M: (I,R,W) S/U: (R,W) Domain0 Region01: 0x0000000000040000-0x000000000005ffff M: (R,W) S/U: () Domain0 Region02: 0x0000000000000000-0x000000000003ffff M: (R,X) S/U: () > Domain0 Region03: 0x00000000e6000000-0x00000000e60fffff M: (I,R,W) S/U: () > Domain0 Region04: 0x00000000e6400000-0x00000000e67fffff M: (I,R,W) S/U: () Domain0 Region05: 0x0000000000000000-0xffffffffffffffff M: () S/U: (R,W,X) The PMP rules of AE350-AX65 (single-core) w/ Smepmp: p/x $pmpcfg0 $1 = {0x1f9b9b9d9b1e00, pmp0cfg = {0x0}, L--AAXWR pmp1cfg = {0x1e} (00011110), pmpaddr1: 0xf0300000 ~ 0xf0300fff (UART1) pmp2cfg = {0x9b} (10011011), pmpaddr2: 0x40000 ~ 0x5ffff pmp3cfg = {0x9d} (10011101), pmpaddr3: 0x0 ~ 0x3ffff pmp4cfg = {0x9b} (10011011), pmpaddr4: 0xe6000000 ~ 0xe60fffff (PLMT) pmp5cfg = {0x9b} (10011011), pmpaddr5: 0xe6400000 ~ 0xe67fffff (PLICSW) pmp6cfg = {0x1f} (00011111), pmpaddr6: 0x0 ~ 0xffffffffff pmp7cfg = {0x0 }} The PMP rules of AE350-AX45MP (qual-core) w/o Smepmp: p/x $pmpcfg0 $1 = {0x1f181818181b, L--AAXWR pmp0cfg = {0x1b}, (00011011), pmpaddr0: 0xf0300000 ~ 0xf0300fff (UART1) pmp1cfg = {0x18}, (00011000), pmpaddr1: 0x40000 ~ 0x5ffff pmp2cfg = {0x18}, (00011000), pmpaddr2: 0x0 ~ 0x3ffff pmp3cfg = {0x18}, (00011000), pmpaddr3: 0xe6000000 ~ 0xe60fffff (PLMT) pmp4cfg = {0x18}, (00011000), pmpaddr4: 0xe6400000 ~ 0xe67fffff (PLICSW) pmp5cfg = {0x1f}, (00011111), pmpaddr5: 0x0 ~ 0x1ffffffff pmp6cfg = {0x0 }} Note that starting from this patch, we restrict the S/U-mode read permission to the PLMT region, since we should read the TIME CSR in a lower privilege mode. Signed-off-by: Yu Chien Peter Lin Reviewed-by: Anup Patel

lib: utils: Fix sbi_hartid_to_scratch() usage in ACLINT drivers

2023-07-09T05:34:57Z

The cold_init() functions of ACLINT drivers should skip the HART if sbi_hartid_to_scratch() returns NULL because we might be dealing with a HART that is disabled in the device tree. Signed-off-by: Anup Patel Reviewed-by: Xiang W

lib: utils/timer: Use scratch space to save per-HART MTIMER pointer

2023-06-05T11:16:50Z

Instead of using a global array indexed by hartid, we should use scratch space to save per-HART MTIMER pointer. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones

lib: utils/timer: Use heap in ACLINT MTIMER driver

2023-06-05T10:28:42Z

Let's use heap allocation in ACLINT MTIMER driver instead of using a fixed size global array. Signed-off-by: Anup Patel Reviewed-by: Andrew Jones

lib: utils: Improve fdt_timer

2023-05-26T07:17:22Z

Remove dummy driver. Optimize fdt_timer_cold_init to exit the loop early. Signed-off-by: Xiang W Reviewed-by: Anup Patel