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2020-05-07lib: sbi: Improve misa_string() implementationAnup Patel3-19/+52
The RISC-V ISA string does not follow alphabetical order. Instead, we have a RISC-V specific ordering of extensions in the RISC-V ISA string. This patch improves misa_string() implementation to return a valid RISC-V ISA string. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-07lib: sbi_tlb: Fix remote TLB HFENCE VVMA implementationAnup Patel5-22/+69
The HFENCE VVMA instructions flushes TLB based on the VMID present in HGATP CSR. To handle this, we get the current VMID for SBI HFENCE VVMA call and we use this current VMID to do remote TLB HFENCE VVMA on desired set of HARTs. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-07include: sbi: Remove redundant page table related definesAnup Patel1-20/+0
We don't have page table programming in OpenSBI so let's remove redundant page table related defines from riscv_encoding.h. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-04docs: Add missing links in platform.mdAnup Patel1-7/+12
The links to some of the platforms were missing in platform.md file hence this patch. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-05-04platform: Remove spike directoryAnup Patel6-140/+12
The OpenSBI generic platform works perfectly fine on the QEMU spike machine and Spike emulator so let's remove dedicated Spike platform from OpenSBI. All Spike platform related documentation in OpenSBI will now suggest using OpenSBI generic platform. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-05-04platform: Remove qemu/virt directoryAnup Patel7-215/+28
The OpenSBI generic platform works perfectly fine on the QEMU virt machine so let's remove dedicated QEMU virt machine platform from OpenSBI. All QEMU virt machine related documentation in OpenSBI will now suggest using OpenSBI generic platform. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-05-01platform: generic: Add Sifive FU540 TLB flush range limit overrideAnup Patel3-1/+39
We need to override the remote TLB flush range limit for SiFive FU540 so we add platform override to achieve this. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01scripts: Add generic platform to create-binary-archive.shAnup Patel1-0/+2
This patch adds generic platform to create-binary-archive.sh script. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01lib: sbi: Print platform hart count at boot timeAnup Patel1-1/+3
Now that we have generic platform which detects hart count from DTB, we should print platform hart count at boot time. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01platform: Add generic FDT based platform supportAnup Patel6-0/+333
We add generic FDT based platform support which provides platform specific functionality based on the FDT passed by previous booting stage. By default, the generic FDT platform makes following assumptions: 1. platform FW_TEXT_START is 0x80000000 2. platform features are default 3. platform stack size is default 4. platform has no quirks or work-arounds The above assumptions (except 1) can be overridden by adding special platform callbacks which will be called based on the FDT root node compatible string. By default, we compile OpenSBI generic platform as follows: $ make PLATFORM=generic For a non-standard FW_TEXT_START, we can compile OpenSBI generic platform as follows: $ make PLATFORM=generic FW_TEXT_START=<non_standard_text_start> Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01firmware: fw_base: Introduce optional fw_platform_init()Anup Patel1-8/+33
We add optional fw_platform_init() function which will allow platform specific code to update "struct sbi_platform platform" before it is used. The fw_platform_init() can be a regular C function so before callint it we: 1. zero-out BSS section 2. Setup temporary trap handler to catch bugs 3. Setup temporary stack pointer Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01lib: utils: Add simple FDT reset frameworkAnup Patel5-0/+151
We add simple reset framework which will select and use reset driver based on details in FDT passed by previous booting stage. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01lib: utils: Add simple FDT serial frameworkAnup Patel6-0/+242
We add simple serial framework which will select and use serial driver based on details in FDT passed by previous booting stage. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01lib: utils: Add simple FDT irqchip frameworkAnup Patel4-0/+210
We add simple irqchip framework which will select and use irqchip driver based on details in FDT passed by previous booting stage. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01lib: utils: Add simple FDT ipi frameworkAnup Patel4-0/+186
We add simple ipi framework which will select and use ipi driver based on details in FDT passed by previous booting stage. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01lib: utils: Add simple FDT timer frameworkAnup Patel4-0/+202
We add simple timer framework which will select and use timer driver based on details in FDT passed by previous booting stage. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01include: Add array_size() macroAnup Patel1-0/+2
Getting array size of a dynmaic array can be very handy hence this patch. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-05-01lib: utils: Add fdt_parse_plic_node() functionAnup Patel2-6/+23
We add fdt_parse_plic_node() function which will allow us to parse a particular DT node as PLIC node. This will be useful in parsing the DT node which we have found by matching compatible string. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01lib: utils: Add fdt_parse_max_hart_id() APIAnup Patel2-0/+30
We add fdt_parse_max_hart_id() API which return max HART id based on CPU DT nodes. This will be used by generic FDT based drivers in subsequent patches. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-05-01lib: utils: Add fdt_parse_hart_id() functionAnup Patel3-15/+37
Parsing HART id from a CPU DT node is a common requirement for RISC-V systems. The newly added fdt_parse_hart_id() also helps reduce duplicate code between fdt_cpu_fixup() function and fdt_parse_hart_count() function. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-05-01lib: utils: Add fdt_parse_sifive_uart_node() functionAnup Patel2-0/+46
We add fdt_parse_sifive_uart_node() function which will allow us to parse a particular DT node as SiFive UART node. This will be useful in parsing the node pointed by stdout-path. 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>
2020-05-01lib: utils: Make fdt_get_node_addr_size() public functionAnup Patel2-2/+5
The fdt_get_node_addr_size() will be useful in FDT based simple driver frameworks so we make it a public function. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-05-01lib: utils: Add FDT match table based node lookupAnup Patel2-0/+52
This patch adds FDT match table based node lookup funcitons. These functions will be useful in implementing simple FDT based driver frameworks. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01lib: utils: Rename fdt_parse_clint() to fdt_parse_compat_addr()Anup Patel3-7/+7
The fdt_parse_clint() is quite generic and can be used for other types of devices so we rename it to fdt_parse_compat_addr(). 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>
2020-05-01lib: utils: Remove redundant clint_ipi_sync() declarationAnup Patel1-2/+0
The clint_ipi_sync() was removed long time back hence we remove redundant declaration from clint.h 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>
2020-05-01lib: utils: Add fdt_parse_uart8250_node() functionAnup Patel2-14/+26
We add fdt_parse_uart8250_node() function which will allow us to parse a particular DT node as UART 8250 node. This will be useful in parsing the node pointed by stdout-path. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01lib: utils: Improve fdt_parse_uart8250() APIAnup Patel2-0/+23
The information parsed by fdt_parse_uart8250() API is not complete. We need to parse reg-shift and reg-io-width for UART 8520 as well. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-05-01lib: utils/serial: Skip baudrate config if input frequency is zeroAnup Patel2-5/+10
We should skip baudrate config for UART8250 and SiFive UART when input frequency is zero. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2020-05-01firmware: fw_base: Remove CSR_MTVEC update checkCharles Papon1-3/+0
Remove unnecessary CSR_MTVEC read to reduce the openSBI CSR requirement. Mux are costly in FPGA. Allowing CSR_MTVEC to be write only is usefull for the FMax/Area of FPGA softcore. https://github.com/SpinalHDL/opensbi.git branch mtvec Signed-off-by: Charles Papon <charles.papon.90@gmail.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-04-30scripts: adapt binary archive script for Nuclei UX600Huaqi Fang1-0/+1
Signed-off-by: Huaqi Fang <578567190@qq.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-04-29platform: Add Nuclei UX600 platformHuaqi Fang4-0/+207
* Nuclei UX600 is a 64-bit RISC-V core developed by Nuclei System Technology, see https://nucleisys.com/product.php * The ISA is configurable in hardware on your demand Signed-off-by: Huaqi Fang <578567190@qq.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-04-27lib: utils: Add SiFive test deviceAnup Patel4-13/+75
This patch factor-out SiFive test device related stuff into it's own source file from qemu/virt platform. In future, we can find SiFive test device address from device tree as well. 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 Patel15-138/+46
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 Patel7-141/+18
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>
2020-04-20include: Bump-up version to 0.7v0.7Anup Patel1-1/+1
This patch updates OpenSBI version to 0.7 as part of release preparation. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2020-04-19lib: Allow overriding SBI implementation IDAnup Patel3-1/+17
Ideally, the SBI implementation ID for OpenSBI should always be 0x1 (as mentioned in SBI v0.2 spec) but external firmware (such as EDK2) which use OpenSBI as library might want to override the SBI implementation ID with their custom implementation ID. 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>
2020-04-17docs: Update README about supported SBI versionsAtish Patra1-0/+21
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>
2020-04-17lib: Support vector extensionAtish Patra2-1/+10
Enable vector context in mstatus by updating the corresponding bits in mstatus if vector extension is supported by the hart. 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>
2020-04-06lib: irqchip/plic: Fix maximum priority threshold valueAtish Patra1-2/+2
As per the PLIC specification, maximum priority threshold value is 0x7. Even though, writing a higher value doesn't cause any error in qemu hifive unleashed, there may be some implementation which checks the upper and may result in an illegal access. 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>
2020-03-28platform: thead/c910: Use HSM extension to boot secondary coresLiu Yibin2-20/+5
Remove custom vendor extension and use HSM extension to boot secondary cores Signed-off-by: Liu Yibin <yibin_liu@c-sky.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-03-28include: sbi_console: Remove scratch parameter from sbi_dprintf()Anup Patel4-12/+10
This patch removes scratch parameter from sbi_dprintf() function because sbi_dprintf() can use sbi_scratch_thishart_ptr() to get current HART scratch space. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-28include: sbi_timer: Remove scratch parameter from most funcitonsAnup Patel6-45/+52
This patch removes scratch parameter from most sbi_timer functions. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-28include: sbi_system: Remove scratch parameter and redundant functionsAnup Patel4-39/+11
This patch removes scratch parameter and redundant functions from sbi_system. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-28include: sbi_ipi: Remove scratch parameter from most functionsAnup Patel7-24/+22
This patch removes scratch parameter from most sbi_ipi functions. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-28include: sbi_tlb: Remove scratch parameter from sbi_tlb_request()Anup Patel4-16/+14
The sbi_ipi_send_many() should get current HART scratch pointer on it's own using eventually hence removing scratch parameter from sbi_tlb_request(). Signed-off-by: Anup Patel <anup.patel@wdc.com>
2020-03-28lib: sbi_scratch: Introduce sbi_scratch_last_hartid() APIAnup Patel4-4/+13
The patch adds sbi_scratch_last_hartid() API which returns last HART id having a scratch space. We can use this new API to optimize places where we iterate over HART id from 0 to SBI_HARTMASK_MAX_BITS. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-28include: Use more consistent name for atomic xchg() and cmpxchg()Anup Patel4-13/+13
We should remove the "arch_" prefix from atomic xchg() and cmpxchg() function names to have consistent naming of all atomic functions. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-28include: sbi_platform: Remove priv parameter from hart_start() callbackAnup Patel2-9/+7
The priv parameter in hart_start() platform callback is redundant hence we remove it. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-28lib: sbi_trap: Simplify sbi_trap_handler() APIAnup Patel3-16/+10
This patch simplify sbi_trap_handler() API as follows: 1. Remove current hartid local variable because sbi_trap_handler() itself does not need it. 2. Remove scratch parameter because none of the functions directly called by sbi_trap_handler() require it. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-28lib: sbi_ecall: Remove mcause, scratch and hartid parametersAnup Patel9-39/+33
We remove mcause, scratch and hartid parameters from various functions for ecall handling because we can always get current HART id and current scratch pointer using just one CSR access. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
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