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path: root/include/sbi/sbi_domain.h
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2024-05-07sbi: sbi_domain_context: Add spinlock for updating domain assigned_hartsAlvin Chang1-0/+3
Add spinlock protection to avoid race condition on assigned_harts during domain context switching. Also, rename/add variables for accessing the corresponding domain of target/current context. Signed-off-by: Alvin Chang <alvinga@andestech.com> Reviewed-by: Yu Chien Peter Lin <peterlin@andestech.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2024-03-10lib: sbi: Add initial domain context management supportQingyu Shang1-0/+6
The domain context management component in OpenSBI provides basic CPU context management routines for existing OpenSBI domain. As domain extension, it was initially designed to facilitate the suspension and resumption of domains, enabling secure domains to efficiently share CPU resources. The patch also provides an addition to the OpenSBI domain to provide updates on hart-domain assignment and declarations of contexts within the domain. Signed-off-by: Qingyu Shang <2931013282@sjtu.edu.cn> Reviewed-by: Yu Chien Peter Lin <peterlin@andestech.com> Tested-by: Yu Chien Peter Lin <peterlin@andestech.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-09-24include: sbi_domain: Fix permission test macrosMayuresh Chitale1-19/+15
The macros to test permissions must perform an exact match of all the bits in the input with the desired permission bits. Otherwise, the check returns false positives in those cases where only some of the desired permissions are set in the input. Fixes: 6c202c5 ("include: sbi: Add Smepmp specific access flags for PMP entries") Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-09-24lib: sbi: Maximize the use of HART index in sbi_domainAnup Patel1-3/+3
Let us maximize the use of HART index in sbi_domain because hartindex based hartmask access and sbi_scratch lookup is faster. Signed-off-by: Anup Patel <apatel@ventanamicro.com>
2023-07-13include: sbi: Add Smepmp specific access flags for PMP entriesHimanshu Chauhan1-6/+78
Smepmp specification defines a truth table based on which the access is allowed to different modes. This patch adds different flags based on this truth table. Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-06-05lib: sbi: Use scratch space to save per-HART domain pointerAnup Patel1-5/+1
Instead of using a global array indexed by hartid, we should use scratch space to save per-HART domain pointer. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
2023-04-06lib: sbi: Fix how to check whether the domain contains fw_regionXiang W1-0/+2
Because firmware is split into rw/rx segments, it cannot be recorded by a root_fw_region. This problem is solved by adding a flag fw_region_inited to sbi_domain. Signed-off-by: Xiang W <wxjstz@126.com> Reviewed-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-02-27lib: sbi: Add system_suspend_allowed domain propertyAndrew Jones1-0/+2
Only privileged domains should be allowed to suspend the entire system. Give the root domain this property by default and allow other domains to be given the property by specifying it in the DT. Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2023-02-10lib: sbi: Add sbi_domain_check_addr_range() functionAnup Patel1-0/+15
We add sbi_domain_check_addr_range() helper function to check whether a given address range is accessible under a particular domain. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Bin Meng <bmeng@tinylab.org> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
2023-01-09lib: utils: Disallow non-root domains from adding M-mode regionsHimanshu Chauhan1-0/+5
The M-mode regions can only be added to the root domain. The non-root domains shouldn't be able to add them from FDT. Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org> Tested-by: Anup Patel <anup@brainfault.org>
2023-01-09include: sbi: Fine grain the permissions for M and SU modesHimanshu Chauhan1-5/+42
Split the permissions for M-mode and SU-mode. This would help if different sections of OpenSBI need to be given different permissions and if M-mode has different permisssions than the SU-mode over a region. Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org> Tested-by: Anup Patel <anup@brainfault.org>
2023-01-06treewide: Replace TRUE/FALSE with true/falseBin Meng1-2/+2
C language standard uses true/false for the boolean type. Let's switch to that for better language compatibility. Signed-off-by: Bin Meng <bmeng@tinylab.org> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Samuel Holland <samuel@sholland.org> Tested-by: Samuel Holland <samuel@sholland.org>
2022-10-23lib: sbi: Add sbi_domain_root_add_memrange() APIYu Chien Peter Lin1-0/+14
This patch generalizes the logic to add a memory range with desired alignment and flags of consecutive regions to the root domain. Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2022-10-23include: sbi: Fix grammar in commentYu Chien Peter Lin1-1/+1
Fix minor grammar issue in function description. Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2022-02-15lib: sbi: verbose sbi_domain_root_add_memregionNikita Shubin1-1/+3
Be more verbose on region confict, print addresses in conflict. Signed-off-by: Nikita Shubin <n.shubin@yadro.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup@brainfault.org>
2021-04-13lib: sbi: Make sbi_domain_memregion_initfw() a local functionAnup Patel1-3/+0
The sbi_domain_memregion_initfw() is no longer used outside sbi_domain.c so let's make it a local function. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2021-04-13lib: sbi: Make the root domain instance global variableAnup Patel1-0/+3
We make the the root domain instance global variable so that platform support and drivers can iterate over the root domain regions. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2021-04-13lib: sbi: Add sbi_domain_root_add_memregion() APIAnup Patel1-0/+8
We should allow platform support to add more root memory regions before domains are finalized. This will help platform support to protect critical M-mode only resources. This patch adds sbi_domain_root_add_memregion() API for above described purpose. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2021-04-13lib: sbi: Add sbi_domain_memregion_init() APIAnup Patel1-0/+14
This patch adds sbi_domain_memregion_init() helper API which can be used by platform support to initialize a domain memory region before adding it to the root domain. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-12-16lib: sbi: Add function to register new domainAnup Patel1-0/+10
We add sbi_domain_register() function to help platform code register a new domain explicitly instead of depending on domain_get() platform callback. This function will eventually help us completely remove the domain_get() platform callback. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-12-04include: sbi: Use lower bits for domain memory region permissionsAnup Patel1-2/+4
We should use lower bits for domain memory region access permissions and higher bits for other domain memory region attributes. This helps us use same bit assignment for parsing domain memory region access permissions from device tree. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-10-21lib: sbi: Display domain details in boot printsAnup Patel1-0/+6
We extend boot prints to display details of each domain. In the process, we remove sbi_hart_pmp_dump() because it shows redundant information which domain details already show. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-10-20lib: sbi: Add initial domain supportAnup Patel1-0/+147
An OpenSBI domain is a logical entity representing a set of HARTs and a set of memory regions for these HARTs. The OpenSBI domains support will allow OpenSBI platforms and previous booting stage (i.e. U-Boot SPL, Coreboot, etc) to partition a system into multiple domains where each domain will run it's own software. For inter-domain isolation, OpenSBI will eventually use various HW features such as PMP, ePMP, IOPMP, SiFive shield, etc but initial implementation only use HW PMP support. This patch provides initial implementation of OpenSBI domains where we have a root/default domain and OpenSBI platforms can provide non-root/custom domains using domain_get() callback. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
generated by cgit v1.1 at 2024-10-19 06:45:25 +0000