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2021-08-07lib: utils/fdt: Change addr and size to uint64_tBin Meng3-12/+13
The maximum address and size encoded in DT are 64-bit numbers, so we should use uint64_t for 'addr' and 'size' in fdt_get_node_addr_size(). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-08-07lib: sbi: Fix bug in strncmp function when count is 0Dong Du1-0/+4
No need to compare characters when the count turns to 0. Fix the issue in sbi_strncmp. Signed-off-by: Dong Du <Dd_nirvana@sjtu.edu.cn> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-07-27lib: utils: support both of gpio-poweroff, gpio-resetHeinrich Schuchardt2-2/+12
The generic GPIO reset driver has two entries in the match table: "gpio-poweroff", "gpio-reset". Only the first entry is considered by fdt_reset_init(). Define "gpio-poweroff" and "gpio-reset" as compatibility strings of two separate reset drivers. They still can share code. Fixes: e3d6919d10d7 ("lib: utils/reset: Add generic GPIO reset driver") Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-07-27lib: utils: remove unused variable in fdt_reset_initHeinrich Schuchardt1-3/+0
The value of variable current_driver is unused. Remove the variable. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-07-17lib: utils/reset: Add generic GPIO reset driverGreen Wan3-0/+144
We add generic GPIO reset driver inspired from gpio-restart and gpio-poweroff drivers of Linux kernel. Signed-off-by: Green Wan <green.wan@sifive.com> Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-07-17lib: utils/gpio: Add minimal SiFive GPIO driverGreen Wan3-0/+109
We add a minimal SiFive GPIO driver so that we can do GPIO based system power-off and reset. Signed-off-by: Green Wan <green.wan@sifive.com> Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-07-17lib: utils/gpio: Add simple FDT based GPIO frameworkAnup Patel2-0/+133
We add a simple FDT based GPIO framework which is built on top of generic GPIO library. The phandle of FDT GPIO chip DT node is treated as unique GPIO chip ID required by the generic GPIO library. The FDT based GPIO chip drivers will be probed on-demand from fdt_gpio_pin_get() called by the GPIO client drivers. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-07-17lib: utils/gpio: Add generic GPIO configuration libraryAnup Patel2-0/+126
We add generic GPIO configuration library which is independent of hardware description format (FDT or ACPI). The OpenSBI platform support or GPIO drivers can register GPIO chip instances which can be discovered and used by different GPIO clients. Each GPIO chip instance has a unique ID which can be used by GPIO clients to lookup GPIO chip instance. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-07-17lib: utils/fdt: Add fdt_parse_phandle_with_args() APIAnup Patel1-0/+47
The libfdt project does not have a generic API to parse phandle with args from a DT node so we add fdt_parse_phandle_with_args() for this purpose. This new API will be useful to FDT based drivers. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: utils: Drop dependency on libgcc by importing part of FreeBSD's libquadJessica Clarke10-0/+682
We only need libgcc for 64-bit division on RV32. Whilst GCC toolchains bundle libgcc, Clang toolchains tend not to ship libclang_rt.builtins given every compiler is a cross-compiler for every target and so you would need a silly number of builds of it, with only the native library available; only vendor-provided Clang toolchains specifically for bare metal cross-compiling are likely to provide it. Thus, import part of FreeBSD's implementation of the division support functions needed and stop linking against libgcc. Signed-off-by: Jessica Clarke <jrtc27@jrtc27.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Tested-by: Anup Patel <anup.patel@wdc.com>
2021-07-11lib: sbi: Fix sbi_pmu_exit() for systems not having MCOUNTINHIBIT csrAnup Patel1-0/+4
The sbi_pmu_exit() crashes on systems not having MCOUNTINHIBIT csr so to fix this we check SBI_HART_HAS_MCOUNTINHIBIT feature in sbi_pmu_exit() and do nothing if it is not available. Fixes: 13d40f21d588 ("lib: sbi: Add PMU support") Signed-off-by: Anup Patel <anup.patel@wdc.com>
2021-07-11lib: sbi: Improve TLB function namingAtish Patra1-21/+20
Follow the standard conventon for static function names: All global functions should be start with sbi_<module name>_ All static functions should be start with <module name>_ Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: sbi: Implement firmware countersAtish Patra6-0/+60
RISC-V SBI v0.3 specification defines a set of firmware events that can provide additional information about the current firmware context. All of the firmware event monitoring are enabled now. The firmware events must be defined as raw perf event with MSB set as specified in the specification. Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: sbi: Implement SBI PMU extensionAtish Patra4-1/+98
RISC-V SBI specfication 0.3 defines a PMU extension that allows supervisor mode to start/stop/configure pmu related events. This patch implements all of the functionality defined in the specification. Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11utils: fdt: Add fdt helper functions to parse PMU DT nodesAtish Patra3-0/+114
The PMU DT node bindings are defined in docs/pmu_support.md Add few fdt helper functions to parse the DT node and update the event-counter mapping tables. Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: sbi: Add PMU supportAtish Patra3-0/+632
RISC-V SBI v0.3 specification defined a PMU extension to configure/start/stop the hardware/firmware pmu events. Implement PMU support in OpenSBI library. The implementation is agnostic of event to counter mapping & mhpmevent value configuration. That means, it expects platform hooks will be used to set up the mapping and provide the mhpmevent value at runtime. Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: sbi: Use csr_read/write_num to read/update PMU countersAtish Patra1-0/+35
Currently, csr_read/write_num functions are used to read/write PMP related CSRs where CSR value is decided at runtime. Expand this function to include PMU related CSRs as well. Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: sbi: Remove redundant boot time print statementAtish Patra1-2/+0
This patch removes redundant print from sbi_boot_print_hart(). Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: sbi: Disable m/scounteren & enable mcountinhibitAtish Patra1-4/+21
Currently, all bits in mcountern are enabled unconditionally at boot time. With SBI PMU extension, all the programmable counters should enabled only during performance monitoring for a particular event. However, this is done only if mcountinhibit is implemented because the supervisor mode can not start/stop any event without mcountinhibit. Similarly, supervisor should take care enabling scounteren which allows U-mode to access programmable pmu counters. All the non-programmable ones (CY, TM, IR) should be enabled in M-mode because some userspace may rely on builtins such as __builtin_readcyclecounter. Supervisor OS can still disable them during initial configuration. Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: sbi: Detect number of bits implemented in mhpmcounterAtish Patra1-0/+48
RISC-V privilege specification allows the implementation to have less than 64 bits. Add a function to detect the number of implemented bits in mhpmcounter dynamically at runtime. Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: sbi: Remove stray '\' characterAtish Patra1-1/+1
Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-11lib: sbi: Detect mcountinihibit support at runtimeAtish Patra1-0/+11
RISC-V ISA specification v1.11 defined mcountinhibit CSR that allows software to stop any counter from incrementing. The SBI PMU extension depends on this CSR support in hardware. Define mcountinhibit as a hart specific feature and detect it at runtime. Reviewed-by: Anup Patel <anup.patel@wdc.com> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2021-07-05lib: utils: reset: unify naming of 'sifive_test' deviceGreen Wan3-4/+4
Unify all the file and function names of 'sifive_test' device, to use the same prefix. This is also a preparatory patch for upcoming sifive reset device. Signed-off-by: Green Wan <green.wan@sifive.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-06-24platform: Replace CLINT library usage with ACLINT libraryAnup Patel2-257/+0
The ACLINT devices are backward compatible with SiFive CLINT so we replace all CLINT library usage in various platforms with ACLINT library. As a result of this replacement, the CLINT library is not used by any part of OpenSBI hence we remove it. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-06-24lib: utils/timer: Add FDT based ACLINT MTIMER driverAnup Patel4-60/+77
We add a new FDT based ACLINT MTIMER driver which works for both CLINT device and standalone ACLINT MTIMER device. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-06-24lib: utils/ipi: Add FDT based ACLINT MSWI IPI driverAnup Patel4-54/+70
We add a new FDT based ACLINT MSWI IPI driver which works for both CLINT device and standalone ACLINT MSWI device. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-06-24lib: utils: Add FDT parsing API common for both ACLINT and CLINTAnup Patel3-18/+27
We add fdt_parse_aclint_node() which can parse both ACLINT and CLINT DT nodes. This means fdt_parse_clint_node() is not required anymore so we remove it as well. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-06-24lib: utils/ipi: Add ACLINT MSWI libraryAnup Patel2-0/+101
We add common ACLINT MSWI library similar to the CLINT library so that OpenSBI platforms can use it. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-06-24lib: utils/timer: Add ACLINT MTIMER libraryAnup Patel2-0/+181
We add common ACLINT MTIMER library similar to the CLINT library so that OpenSBI platforms can use it. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-06-22lib: simplify sbi_fifo_inplace_update()Heinrich Schuchardt1-2/+2
Don't assign an unused value to variable index. Use operator '-=' where applicable. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-06-22lib: sign conflict in wake_coldboot_harts()Heinrich Schuchardt1-1/+1
Compiling wake_coldboot_harts() with GCC 11 and -Wextra yields: lib/sbi/sbi_init.c:208:27: error: comparison of integer expressions of different signedness: ‘int’ and ‘u32’ {aka ‘unsigned int’} [-Werror=sign-compare] 208 | for (int i = 0; i <= sbi_scratch_last_hartid(); i++) { | ^~ Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-06-22lib: sign conflict in sbi_tlb_entry_process()Heinrich Schuchardt1-2/+3
Compiling sbi_tlb_entry_process() with GCC 11 and -Wextra yields: lib/sbi/sbi_tlb.c: In function ‘sbi_tlb_process_count’: lib/sbi/sbi_tlb.c:206:31: error: comparison of integer expressions of different signedness: ‘u32’ {aka ‘unsigned int’} and ‘int’ [-Werror=sign-compare] 206 | if (deq_count > count) Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-06-22lib: utils/libfdt: Upgrade to v1.6.1 releaseBin Meng11-104/+226
Sync with libfdt v1.6.1 release source codes. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-06-11lib: utils: missing initialization in thead_reset_initHeinrich Schuchardt1-4/+6
If property csr-copy does not exist, fdt_getprop() will return NULL and cnt will have a random value from the stack. Call clone_csrs() only if cnt is initialized to a non-zero value. Fixes: 49e422c5ad7a ("lib: utils: reset: Add T-HEAD sample platform reset driver") Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-06-11lib: sbi_scratch: zero out scratch memory on all hartsHeinrich Schuchardt1-2/+2
In sbi_scratch_init() we determine the last hart. The index of the last hart cannot exceed SBI_HARTMASK_MAX_BITS - 1. We should not initialize last_hartid_having_scratch to a higher number to avoid buffer overflows when using this value before calling sbi_scratch_init(). When allocating scratch memory in sbi_scratch_alloc_offset() we zero out the allocated memory for all harts except for the last one. We should not skip the last hart. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-06-02lib: sbi_scratch: remove owner from sbi_scratch_alloc_offsetHeinrich Schuchardt7-17/+9
The parameter owner of function sbi_scratch_alloc_offset() is never used. The scratch memory is small. We should not use it for debug information in future. Hence eliminate the parameter. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-06-02lib: utils: consider ':' in stdout-pathHeinrich Schuchardt1-3/+12
The value of the /chosen/stdout-path devicetree property is used to determine the UART used by openSBI. According to the devicetree specification the value may contain a hyphen, e.g. chosen {                 stdout-path = "/serial@f00:115200";         }; If the character ':' is present, it terminates the path of the device. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-05-24lib: utils: Try other FDT drivers when we see SBI_ENODEVAnup Patel5-0/+17
We should try other FDT drivers when we see SBI_ENODEV returned by cold_init() of FDT driver. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-05-24lib: Check region base for merging in sbi_domain_root_add_memregion()Anup Patel1-1/+2
We can merge region B onto region A only if base of region A is aligned to region A order + 1. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Xiang W <wxjstz@126.com>
2021-05-19lib: utils/fdt: Replace strcmp with strncmpDaniel Schaefer1-1/+1
Use strncmp() instead of strcmp() in __fixup_find_domain_offset() so that it compiles fine when linking with external firmware (such as EDK2). Signed-off-by: Daniel Schaefer <daniel.schaefer@hpe.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Abner Chang <abner.chang@hpe.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-05-19lib: utils/fdt: Don't use sbi_string functionsDaniel Schaefer1-4/+5
When SBI is built by external firmware, we need to use their functions, defined in libfdt_env.h. Just like 2cfd2fc9048806353298a1b967abf985901e36e8 Signed-off-by: Daniel Schaefer <daniel.schaefer@hpe.com> Reviewed-by: Abner Chang <abner.chang@hpe.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-05-19lib: utils: Add strncpy macro to libfdt_env.hDaniel Schaefer1-0/+1
we want to use sbi_strncpy as strncpy in the OpenSBI implementation for libfdt. Just like 2845d2d2cf4fb74a89452ba223995aa4a118c07e Signed-off-by: Daniel Schaefer <daniel.schaefer@hpe.com> Reviewed-by: Abner Chang <abner.chang@hpe.com> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-05-19lib: utils/serial: Support Synopsys DesignWare APB UARTBin Meng1-0/+1
Synopsys DesignWare APB UART is seen on the StarFive JH7100 SoC. Its programming interface is compatible with the existing 8250 UART driver. Simply add its compatible string to the driver makes it work with the StarFive JH7100 SoC on a BeagleV board. With this patch, the generic platform firmware can be used out of the box on the BeagleV board. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-05-14lib: sbi: Have spinlock checks return boolDaniel Schaefer1-3/+3
spin_lock_check already returned bool in the source file but not in the header. With some toolchains that causes an error, as it should. Because it and related functions all essentially return a bool, we can use this opportunity to change them. Signed-off-by: Daniel Schaefer <git@danielschaefer.me> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-05-06lib: utils/serial: Add support for Gaisler APBUARTDaniel Cederman5-0/+165
This patch adds support for the UART used by the NOEL-V processor. Cobham Gaisler's NOEL-V RISC-V processor IP is available under GPL and commercial license and is described in more detail at https://www.gaisler.com/noelv. Signed-off-by: Daniel Cederman <cederman@gaisler.com> Reviewed-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2021-04-28lib: sbi: Show devices provided by platform in boot printsAnup Patel1-0/+20
We extend the boot-time prints to show various devices provided (or registered) by the platform support. This will help users verify hardware devices available for OpenSBI firmwares. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2021-04-28lib: sbi: Simplify HSM platform operationsAnup Patel2-18/+56
Instead of having hsm_start(), hsm_stop() and hsm_suspend() callbacks in platform operations, it will be much simpler for HSM driver to directly register these operations as a device to the sbi_hsm implementation. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2021-04-28lib: sbi: Simplify system reset platform operationsAnup Patel7-40/+74
Instead of having system_reset_check() and system_reset() callbacks in platform operations, it will be much simpler for reset driver to directly register these operations as a device to the sbi_system implementation. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2021-04-28lib: sbi: Simplify ipi platform operationsAnup Patel6-35/+45
Instead of having ipi_send() and ipi_clear() callbacks in platform operations, it will be much simpler for ipi driver to directly register these operations as a device to sbi_ipi implementation. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
2021-04-28lib: sbi: Simplify timer platform operationsAnup Patel5-61/+53
Instead of having timer_value(), timer_event_start(), and timer_event_stop() callbacks in platform operations, it will be much simpler for timer driver to directly register these operations as device to the sbi_timer implementation. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-13 00:41:11 +0300