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2021-01-18platform: template: Fix compile errorAnup Patel1-2/+2
This clint driver init functions were incorrectly used in template platform which resulted in compile error. This patch fixes clint driver function usage in template platform. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-12-01lib: sbi: Improve system reset platform operationsAnup Patel1-2/+10
To implement the SBI SRST extension, we need two platform operations for system reset: 1) system_reset_check() - This operation will check whether given reset type and reason are supported by the platform 2) system_reset() - This operation will do the actual platform system reset and it will not return if reset type and reason are supported by the platform This patch updates system reset related code everywhere as-per above. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-23lib: utils: Allow CLINT functions to be used for multiple CLINTsAnup Patel1-8/+13
We extend CLINT cold init function to have a "struct clint_data *" parameter pointing to CLINT details. This allows platforms to use CLINT functions for multiple CLINT instances. When multiple CLINTs are present, the platform can also provide one of the CLINT as reference CLINT for other CLINTs. This will help CLINTs to sync their time value with reference CLINT using a time_delta computed in warm init function. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-23lib: utils: Allow PLIC functions to be used for multiple PLICsAnup Patel1-4/+16
We extend all PLIC functions to have a "struct plic_data *" parameter pointing to PLIC details. This allows platforms to use these functions for multiple PLIC instances. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-23lib: utils: Remove redundant parameters from PLIC init functionsAnup Patel1-3/+2
The "target_hart" and "hart_count" parameters of PLIC cold and warm init functions are only used for sanity checks and not required in PLIC initialization. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-04-27include: sbi_platform: Combine reboot and shutdown into one callbackAnup Patel1-12/+3
We can achieve shutdown, cold reboot, and warm reboot using just one sbi_platform callback so we combine system_reboot() and system_shutdown() callbacks into one system_reset() callback. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-04-27lib: No need to provide default PMP region using platform callbacksAnup Patel1-20/+0
The default (usually last) PMP region provides S-mode access to complete memory range not covered by other PMP regions. Currently, the default PMP region is described as platform specific PMP region which is not appropriate because all platforms need it and default PMP region should be part of generic library. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-03-14platform: Use one unified per-HART stack size macro for all platformsBin Meng1-1/+1
As of today all platforms use 8KB of per-HART stack hence there is no need for each platform to define its own macro or use the magic number. Create one macro for all platforms. Platform still can use its own version if needed. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-03-14platform: Set per-HART stack size to 8KB in the template platform codesBin Meng1-1/+1
The template platform codes should set per-HART stack size to 8KB to avoid possible mistakes of future platform ports. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-03-13include: Make sbi_current_hartid() as macro in riscv_asm.hAnup Patel1-1/+2
The sbi_current_hartid() being a regular function is quite expensive because for callers it is a function call instead of a direct CSR read. This patch converts sbi_current_hartid() into a macro in riscv_asm.h. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-11include: Remove disabled_hart_mask from sbi_platformAnup Patel1-1/+0
The disabled_hard_mask in sbi_platform is only 64bits wide so we cannot disable a HART with HARTID > 63. To tackle this, we remove disabled_hart_mask and replace it with hart_disabled() platform callback. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-02-05platform: Add an platform ops to return platform specific tlb flush limitAtish Patra1-1/+0
If a platform requires to perform a tlb full flush, they should set the tlb_range_flush_limit value to zero. However, corresponding platform API ignore the value and continue to return the default value. Add a platform ops to retrieve platform specific tlb range flush limit. The platform variable becomes redundant in presence of the platform ops. Take this opportunity to remove the variable as well. The default is still set to smallest page size in RISC-V (4KB), as there is no way to figure out a best value for all platforms. Individual platform should set it to the optimal value for their platform. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-01-24platform: template: typo fix in system reboot/shutdown namesJiuyang Liu (Sequencer)1-2/+2
This patch does minor typo fix in system reboot/shutdown names in platform operations. Signed-off-by: Jiuyang Liu (Sequencer) <liujiuyang1994@gmail.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Anup Patel <anup.patel@wdc.com>
2020-01-02lib: utils: Support CLINT with 32bit MMIO access on RV64 systemAnup Patel1-1/+1
It is possible to have a CLINT implementation which supports only 32bit MMIO accesses on RV64 system so this patch extends our CLINT driver such that platform code can specify whether CLINT supports 64bit MMIO access. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra<atish.patra@wdc.com> Reviewed-by: Zong Li <zong.li@sifive.com>
2019-09-10lib: provide a platform specific tlb range flush thresholdAtish Patra1-0/+1
Currently, the tlb range flush threshold is fixed and set to 4k for all platforms. However, it should be platform specific as it completely depends upon how platform actually implements sfence instruction. Define a platform feature that allows every individual platform to set different values. If a platform doesn't define it, just use a page size as the threshold. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-08-16platform: Remove the ipi_sync method from all platforms.Atish Patra1-10/+0
OpenSBI manages outstanding TLB flush requests by queueing them in a fifo synchronously. An ipi sync which uses an atomic operation on MMIO address is no longer required. Remove the ipi sync method from platform header and all usage. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-06-29include: Add version info to struct sbi_platformAbner Chang1-0/+2
Add version control of sbi_platform structure - Add opensbi_version, this gives information of opensbi revision on which the sbi_platform table was created. - Add platform_version field in sbi_platform structure for platform level version control. Signed-off-by: Abner Chang <abner.chang@hpe.com> Acked-by: Anup Patel <anup.patel@wdc.com>
2019-06-29include: Move callbacks in sbi_platform to separate structAbner Chang1-33/+29
Move platform opensbi functions to sbi_platform_operations structure. Both sbi_platform and sbi_platform_operations structures are maintained by platform vendors. Signed-off-by: Abner Chang <abner.chang@hpe.com> Acked-by: Anup Patel <anup.patel@wdc.com>
2019-04-24all: run clang-format and update checked-in filesOlof Johansson1-18/+16
Noisy commit, no functional changes. Generated with an current upstream clang-format and: clang-format -i $(find . -name \*.[ch]) Signed-off-by: Olof Johansson <olof@lixom.net>
2019-03-06platform: Make the `platform` read-onlyXiang Wang1-1/+1
platform should be a read-only variable, if it is placed in the data segment, it may be exploited. Signed-off-by: Xiang Wang <wxjstz@126.com>
2019-03-05lib:platform: Fix sbi_getc return type.Atish Patra1-1/+1
As per the current SBI specification, sbi_getc should return an int instead of char. In case of FIFO is empty, return -1 as per the specification. Reported-by: Sergi Granell <xerpi.g.12@gmail.com> Suggested-by:Thadeu Lima de Souza Cascardo <cascardo@cascardo.eti.br> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2019-02-19template: Fix some callback namesSergi Granell1-3/+3
2019-02-19template: Remove trailing ';'Sergi Granell1-1/+1
2019-02-19template: Fix typo in platform_final_initSergi Granell1-1/+1
There was a space instead of '_' in the function `platform_final_init`.
2019-01-24platform: add template platform filesDamien Le Moal1-0/+242
Create commented template files to use as a base for new platforms support implementation. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
generated by cgit v1.2.3 (git 2.39.0) at 2026-09-14 13:07:25 +0300