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2021-03-03platform: implement K210 system resetHeinrich Schuchardt2-0/+28
Implement rebooting the K210 via the system reset extension. All reset types are treated in the same way. A request for shutdown results in a reboot. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-12-01platform: Remove dummy system reset functionsAnup Patel1-10/+0
Few platforms have dummy system reset functions so let's remove these dummy system reset functions to allow generic code deal with it in the right way. 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>
2020-10-18platform: kendryte/k210: Add some padding for FDT fixupsAnup Patel1-0/+1
The Kendryte K210 platform has built-in DTB and does not provides FW_PAYLOAD_FDT_ADDR. This means the FDT fixups will be done on the built-in DTB in absence of FW_PAYLOAD_FDT_ADDR. This patch adds some padding in built-in DTB for FDT fixups. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-08-20platform: kendryte/k210: fixup FDTHeinrich Schuchardt1-0/+18
When passing the device tree to the next stage we should apply necessary device tree fix-ups first. These include: * fix up the CPU node in the device tree * fix up the PLIC node in the device tree * fix up the reserved memory node in the device tree Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-06-05platform: kendryte/k210: Use new mechanism of builtin DTBAnup Patel3-2/+12
We update kendryte/k210 to use new mechanism of having builtin DTB where we convert k210.dts to C source and further compile-n-link it with libplatsbi.a. 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 Patel1-4/+9
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 Patel1-3/+7
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>
2020-03-18platform: Clean up include header filesBin Meng1-2/+2
Adjust the order of include header files in alphabetical order in platform codes. Also remove unnecessary inclusions. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-03-14platform: Use one unified per-HART stack size macro for all platformsBin Meng2-2/+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>
2020-03-13include: Make sbi_current_hartid() as macro in riscv_asm.hAnup Patel1-2/+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>
2020-03-08platform: kendryte/k210: Set per-HART stack size to 8KBAnup Patel1-1/+1
All platform except kendryte/k210 use 8KB of per-HART stack hence this patch set per-HART stack size of kendryte/k210 to 8KB for consistency. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@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>
2019-09-28kendryte/k210: remove unused fileDamien Le Moal1-57/+0
Commit 9dfe72057957 ("kendryte/k210: remove sysctl code") missed removing the file sysctl.c. Fix this here. Fixes: 9dfe72057957 ("kendryte/k210: remove sysctl code") Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
2019-09-05kendryte/k210: remove sysctl codeDamien Le Moal4-967/+60
Directly implement frequency discovery, making the sysctl code unnecessary. While at it, Move all macro definitions from platform.c into platform.h and cleanup that file, removing the need for the Apache 2.0 license and Canaan Inc copyright. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
2019-09-05kendryte/k210: Use sifive UART driverDamien Le Moal4-253/+9
The Kendryte K210 UARTHS is compatible with SiFive UART. So use the sifive uart driver and remove the k210 uarths platform code. Signed-off-by: Damien Le Moal <damien.lemoal@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 Patra1-1/+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>
2019-07-25treewide: Use conventional names for 32-bit and 64-bitBin Meng1-5/+5
There are several places in the source tree that have: 32bit, 32 bit, 64bit, 64 bit Fix by using the conventional names with a hyphen. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de> Acked-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 Chang1-12/+13
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>
2019-06-19platform: Enable all drivers by default.Atish Patra1-8/+0
The drivers and libfdt are built as libsbiutils.a instead of libplatsbi.a. libsbiutils.a are not built per platform specific. Thus, enable all drivers by default. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Anup Patel <anup.patel@wdc.com>
2019-06-19platform: Move platform common to lib/utils.Atish Patra1-2/+2
Currently, platform/common contains platform/non-platform specific common minimal drivers and libraries. This is helpful is all platforms are built within opensbi framework. Move them to lib/utils so that any external platform code also can reuse the minimalistic drivers or other common libraries. This patch doesn't introduce any functional changes. Signed-off-by: Atish Patra <atish.patra@wdc.com> Acked-by: Anup Patel <anup.patel@wdc.com>
2019-04-24all: run clang-format and update checked-in filesOlof Johansson5-40/+31
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>
2019-04-24all: Annotate some tables to have clang-format leave them aloneOlof Johansson2-1/+8
One of the shortcomings of clang-format is that it doesn't allow for aligned define tables, which is used for a number of constants. Add annotation to disable the automatic formatting where needed. Signed-off-by: Olof Johansson <olof@lixom.net>
2019-04-03kendryte/k210: Fix file headersDamien Le Moal5-5/+25
Add missing SPDX and copyright information. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
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 Patra3-4/+4
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>
2019-02-14platform: Use CSR_<FOO> instead of <foo> for csr_*()Atish Patra1-1/+1
Some older toolchains may not have all the csr's defined. Update all the csr functions to use the CSR_ #define values instead of the toolchain defined values. Suggested-by: Olof Johansson <olof@lixom.net> Signed-off-by: Atish Patra <atish.patra@wdc.com>
2019-02-12Makefile: Set ABI, ISA and Code Model in top-level makeAnup Patel1-2/+2
This patch introduces following optional PLATFORM options: PLATFORM_RISCV_XLEN -> RISC-V register width PLATFORM_RISCV_ABI -> RISC-V GCC ABI PLATFORM_RISCV_ISA -> RISC-V GCC ISA string PLATFORM_RISCV_CODE_MODEL -> RISC-V GCC Code Model If the above options are not provided by platform config.mk or by command-line parameters then: 1. PLATFORM_RISCV_XLEN will be determined using toolchain capability 2. PLATFORM_RISCV_ABI, PLATFORM_RISCV_ISA, and PLATFORM_RISCV_CODE_MODEL is set to value best suited for generic libsbi.a As a result of these optional PLATFORM options, the platform-cflags-y and platform-asflags-y is further simplified for platform config.mk. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-24all: Update copyright header in all filesAnup patel4-12/+12
This patch updates copyright header in all files as follows: 1. Makes "SPDX-License-Identifier: BSD-2-Clause" as first line 2. Change copyright year to 2019 for Western Digital Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23include: Rename ipi_inject() to ipi_send() for sbi_platformAnup Patel1-1/+1
For better naming, we rename ipi_inject() to ipi_send() in struct sbi_platform. We also replace term "inject" with "send" in all related places. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23include: Drop MMIO from SBI_PLATFORM_HAS_MMIO_TIMER_VALUEAnup Patel1-1/+1
It is not necessary that platform has MMIO-based timer value register. It can also have some custom (implementation specific) CSR for timer value. This patch renames SBI_PLATFORM_HAS_MMIO_TIMER_VALUE to SBI_PLATFORM_HAS_TIMER_VALUE to imply "platform timer value" instead of "mmio timer value". Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23lib: Remove target_hart and hartid parameter from TIMER callbacksAnup Patel1-2/+2
The target_hart and hartid paramter of TIMER callbacks is not required because it always current hartid which can be obtained using sbi_current_hartid() API. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23lib: Remove hartid parameter from IRQCHIP callbacksAnup Patel1-1/+3
The hartid parameter in IRQCHIP callbacks of sbi_platform is not required because current hartid can be determined using sbi_current_hartid() API. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-23lib: Remove source_hart and hartid parameter from IPI callbacksAnup patel1-2/+2
The source_hart and hartid parameter is really not required in IPI callbacks of sbi_platform because current hartid can always be obtained by calling sbi_current_hartid() API. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2019-01-21kendryte/k210: Add device tree supportDamien Le Moal3-0/+72
The Kendryte k210 board initial loader does not provide a device tree for the firmware and subsequent payload. Add the k210.dts device tree description file to solve this. This file describes only the SoC core components: CPUs, memory and PLIC. Automatically compile and add this file to the firmware generated using the FW_PAYLOAD_FDT_PATH configuration parameter. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-21kendryte/k210: Fix consoleDamien Le Moal1-3/+7
Clear console input when intializing it. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-21build: Introduce FW_PAYLOAD_ALIGNDamien Le Moal1-3/+1
The firmware payload offset defined by FW_PAYLOAD_OFFSET must specify a value large enough so the the payload does not overlap with the base firmware data, bss and text. For platforms without any strong requirement on the payload address, introduce the FW_PAYLOAD_ALIGN build parameter to automatically place the payload right after the base firmware at an address aligned with the defined value. Either FW_PAYLOAD_OFFSET or FW_PAYLOAD_ALIGN should be defined by a platform configuration. If both FW_PAYLOAD_OFFSET and FW_PAYLOAD_ALIGN are defined by a platform, FW_PAYLOAD_OFFSET has precedence and is used for building the final firmawre image. Using FW_PAYLOAD_ALIGN=4096 with the Kendryte platform rather than the abitrary FW_PAYLOAD_OFFSET=0x10000 value reduces the final firmware image size by about 20KB. Add a description of the FW_PAYLOAD_ALIGN configuration parameter in the fw_payload documentation file as well. And while at it, also fix various grammar and style issues in that file.. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-18platform: Remove string functions from tinyfdt.cAtish Patra1-0/+3
There are couple of string function defined in platform code. We no longer need them as we can directly link minimal libc. Every platform required to inclde this as PLIC driver required libc functions. Signed-off-by: Atish Patra <atish.patra@wdc.com>
2019-01-03platform: kendryte/k210: Simplify sysctl codeDamien Le Moal3-1909/+20
Simplify sysctl.c code to only the used CPU freqency function. This reduces the size of the final firmware by 4KB. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2019-01-03platform: kendryte/k210: Declare local function staticDamien Le Moal1-2/+2
k210_console_putc() and k210_console_init() are local functions. Declare them as static. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
2018-12-31platform: Fix author name for Kendryte K210 platformAnup Patel3-3/+3
The Kendryte K210 platform support was contributed by Damien hence fix author name. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-27lib: Simplify sbi_platform timer_init() hooksAnup Patel1-4/+12
Instead of having separate timer_init() hooks for cold and warm boot, this patch updates struct sbi_platform to have just one timer_init() hook. The type of boot (cold or warm) is now a boolean flag parameter for the updated timer_init() hook. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-27lib: Simplify sbi_platform ipi_init() hooksAnup Patel1-4/+12
Instead of having separate ipi_init() hooks for cold and warm boot, this patch updates struct sbi_platform to have just one ipi_init() hook. The type of boot (cold or warm) is now a boolean flag parameter for the updated ipi_init() hook. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-27lib: Simplify sbi_platform irqchip_init() hooksAnup Patel1-12/+15
Instead of having separate irqchip_init() hooks for cold and warm boot, this patch updates struct sbi_platform to have just one irqchip_init() hook. The type of boot (cold or warm) is now a boolean flag parameter for the updated irqchip_init() hook. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-27lib: Simplify sbi_platform early_init() and final_init() hooksAnup Patel1-2/+0
Instead of having separate early_init() and final_init() hooks for cold and warm boot, this patch updates struct sbi_platform to have just one early_init() and one final_init() hook. The type of boot (cold or warm) is now a boolean flag parameter for the updated early_init() and final_init() hooks. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-22platform: Remove PLAT_HART_COUNT and PLAT_HART_STACK_SIZEAnup Patel3-10/+10
The PLAT_HART_COUNT and PLAT_HART_STACK_SIZE are only used by platform code so no need of exposing these to everyone by adding it to platform-cppflags-y. Signed-off-by: Anup Patel <anup.patel@wdc.com>
2018-12-22platform: Remove PLAT_NAME from all platformsAnup Patel2-2/+1
The PLAT_NAME is used only in platform.c for all platforms hence remove it. Signed-off-by: Anup Patel <anup.patel@wdc.com>
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