opensbi.git/include/sbi_utils, branch v1.5

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/irqchip: Add shared MMIO region for PLIC in root domain

2023-12-19T10:26:37Z

On platforms with Smepmp, the MMIO regions accessed by M-mode need to be explicitly marked with M-mode only read/write or shared (both (M-mode and S-mode) read/write permission. If the above is not done then runtime PLIC access from M-mode on platforms with Smepmp will result in access fault when further results in CPU hotplug not working. Signed-off-by: Anup Patel

lib: utils/fdt: Allow to use reg-names when parsing ACLINT

2023-12-11T05:05:32Z

Currently, the fdt_parse_aclint_node() follows a fixed order to parse ACLINT timer. This may cause the undesirable result when the ACLINT device does not support mtime without adding an empty entry for it in the DT. To be robust, make fdt_parse_aclint_node() support "reg-names" property, so it can parse the DT in an order independent way. For compatibility, fdt_parse_aclint_node() only use "reg-names" when parsing ACLINT timer, and will fallback to the old way if "reg-names" property is not found. Link: https://lore.kernel.org/all/20231114-skedaddle-precinct-66c8897227bb@squawk/ Signed-off-by: Inochi Amaoto Reviewed-by: Anup patel

lib: utils: fdt_pmu: Make the fdt_pmu_evt_select table global variable

2023-12-06T12:45:41Z

To allow platform override pmu_init() filling the translation table fdt_pmu_evt_select[] when PMU node doesn't provide such information, we need to share the table and its entry counter with other .c file. We also define the structures of PMU property in fdt_helper.h, so we can initialize the mappings in arrays. Signed-off-by: Yu Chien Peter Lin Reviewed-by: Atish Patra Reviewed-by: Anup Patel

lib: ipi: Adjust Andes PLICSW to single-bit-per-hart scheme

2023-12-06T11:53:27Z

The old scheme doesn't allow sending hart0 self-IPI as the corresponding bit on pending register is hardwired to 0, this could lead to unhandle IPIs on SMP systems, esp. on single-core. Furthermore, the limitation of old scheme is 8-core, instead of reserving source hart information, we assign bit (x + 1) as the enable and pending bit of hartx, this also expands the bootable hart number. The following diagram shows the enable bits of the new scheme on 32-core Andes platform. Pending regs: 0x1000 x---0---0---0---0------0---0 Pending hart ID: 0 1 2 3 ... 30 31 Interrupt ID: 0 1 2 3 4 ... 31 32 | | | | | | | Enable regs: 0x2000 x---1---0---0---0-...--0---0---> hart0 | | | | | | | 0x2080 x---0---1---0---0-...--0---0---> hart1 | | | | | | | 0x2100 x---0---0---1---0-...--0---0---> hart2 | | | | | | | 0x2180 x---0---0---0---1-...--0---0---> hart3 . . . . . . . . . . . . . . . . . . . . . 0x2f00 x---0---0---0---0-...--1---0---> hart30 | | | | | | | 0x2f80 x---0---0---0---0-...--0---1---> hart31 <-------- word 0 -------><--- word 1 ---> To send IPI to hart0, for example, another hart (including hart0 itself) will set bit 1 of first word on the pending register. We also fix indentation in andes_plicsw.h along with this patch. Fixes: ce7c490719ed ("lib: utils/ipi: Add Andes fdt ipi driver support") Signed-off-by: Leo Yu-Chi Liang Reviewed-by: Yu Chien Peter Lin Reviewed-by: Randolph Reported-by: Lad Prabhakar Link: https://lists.infradead.org/pipermail/opensbi/2023-October/005665.html Reviewed-by: Lad Prabhakar Tested-by: Lad Prabhakar Reviewed-by: Anup Patel

lib: utils/reset: Remove SiFive Test reset driver

2023-07-31T08:39:24Z

The functionality of SiFive Test reset driver is easily available through Syscon reset driver so let us remove the SiFive Test driver. Signed-off-by: Anup Patel

lib: utils/regmap: Add simple FDT based regmap framework

2023-07-31T08:39:10Z

We add a simple FDT based regmap framework which is built on top of generic regmap library. The phandle of FDT regmap DT node is treated as unique regmap ID. The FDT based regmap drivers will be probed on-demand from fdt_regmap_get_by_phandle() and fdt_regmap_get() called by the regmap client drivers. Signed-off-by: Anup Patel Reviewed-by: Xiang W

lib: utils/regmap: Add generic regmap access library

2023-07-31T08:39:08Z

We add generic regmap access library which is independent of hardware description format (FDT or ACPI). The OpenSBI platform support or regmap drivers can register regmap instances which can be discovered by different regmap clients based on the unique ID of regmap instances. Signed-off-by: Anup Patel Reviewed-by: Xiang W

include: sbi_utils: Remove driver pointer from struct i2c_adapter

2023-07-31T08:39:06Z

The "driver" pointer in struct i2c_adapter is not used anywhere so let us remove it. Signed-off-by: Anup Patel Reviewed-by: Xiang W

lib: utils: Add detection of Smepmp from ISA string in FDT

2023-07-13T06:42:58Z

- Add function to parse ISA string in FDT. - Set Smepmp feature bit in extensions if "smepmp" string is found in ISA string. Signed-off-by: Himanshu Chauhan Reviewed-by: Anup Patel