Damien Le Moal [Thu, 7 Feb 2019 09:11:41 +0000 (18:11 +0900)]
top: README.md updates
Clarify OpenSBI components explanation.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Alistair Francis [Wed, 23 Jan 2019 22:38:21 +0000 (14:38 -0800)]
Makefile: Ensure lgcc is included
This fixes errors like this:
undefined reference to `__umoddi3'
when buildilng for 32-bit systems
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Wed, 23 Jan 2019 17:29:55 +0000 (09:29 -0800)]
firmware: Use lw instead of lwu for 32-bit architectures
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Wed, 23 Jan 2019 00:50:50 +0000 (16:50 -0800)]
platform: clint: Allow running on 32-bit systems
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Fri, 18 Jan 2019 19:36:32 +0000 (11:36 -0800)]
sbi_emulate_csr: Shift sbi_timer_value directly
csr_val is a tartget length based variable, so on 32-bit devices it's
only 32-bits. To avoid clearing the entire register perform both steps
in a single line.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Tue, 29 Jan 2019 17:59:31 +0000 (09:59 -0800)]
platform: qemu/virt: Move kernel start address to 4MB alligned
In order to support 32-bit guests move the start address to a 4MB
allignment. As 64-bit kernels have a requirement on being 2MB alligned
let's just make this the default for both 32 and 64 bit kernels.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Tue, 5 Feb 2019 21:51:32 +0000 (13:51 -0800)]
platform: template: Move kernel start address to 4MB alligned
In order to support 32-bit guests move the start address to a 4MB
allignment. As 64-bit kernels have a requirement on being 2MB alligned
let's just make this the default for both 32 and 64 bit kernels.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Fri, 18 Jan 2019 01:33:47 +0000 (17:33 -0800)]
platform/qemu/virt: Dynamically calculate xlen
The QEMU virt machine can be either 32 or 66 bit. Don't hard code the
CPU bit length and instead let the compiler determine it.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Wed, 6 Feb 2019 22:02:22 +0000 (14:02 -0800)]
sbi_ecall: Fix logical OR to be bitwise OR
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Andreas Schwab [Mon, 4 Feb 2019 14:05:36 +0000 (15:05 +0100)]
firwmare: don't expand macros in FW_PAYLOAD_PATH
Signed-off-by: Andreas Schwab <schwab@suse.de>
Andreas Schwab [Mon, 4 Feb 2019 11:48:26 +0000 (12:48 +0100)]
Makefile: don't disable built-in variables
Signed-off-by: Andreas Schwab <schwab@suse.de>
Olof Johansson [Mon, 4 Feb 2019 02:48:43 +0000 (18:48 -0800)]
Makefile: Don't rely on "echo -n"
Turns out it doesn't behave as expected on MacOS, it doesn't honor
-n and echoes that to the file instead. Add a slash and just let
the newline be there instead.
Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Mon, 4 Feb 2019 02:49:20 +0000 (18:49 -0800)]
riscv_asm.h: Use CSR_<FOO> instead of <foo> for csr_read()
Some toolchains might not have all the CSRs available (as seen with
GCC 7.2). So, instead use the defined CSR_ values.
Signed-off-by: Olof Johansson <olof@lixom.net>
Anup Patel [Tue, 29 Jan 2019 12:30:36 +0000 (18:00 +0530)]
docs: Update doxygen config file
This patch updates doxygen config file to include
docs/platform_guide.md and docs/library_usage.md in
generated PDF document.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Tue, 29 Jan 2019 12:29:02 +0000 (17:59 +0530)]
docs: Add library usage guide
This patch adds static library usage guide (i.e.
docs/library_usage.md).
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Tue, 29 Jan 2019 12:26:14 +0000 (17:56 +0530)]
docs: Add platform support guide
This patch adds initial platform support guide (i.e.
docs/platform_guide.md).
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Tue, 29 Jan 2019 12:24:17 +0000 (17:54 +0530)]
top: Fix typo in README.md
This patch renames <platform_sub_dir> to <platform_subdir> to be
consistent everywhere.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Atish Patra [Sun, 27 Jan 2019 07:47:17 +0000 (23:47 -0800)]
docs: Add a fu540 document.
Add a readme guide for fu540 with different types of build & booting steps.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Sun, 27 Jan 2019 07:41:54 +0000 (23:41 -0800)]
docs: Typo fixes
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Thu, 24 Jan 2019 22:48:45 +0000 (14:48 -0800)]
platform: fu540: Provide a compile time option selective hart booting.
Currently, only hart 1 is enabled for fu540 platform to support U-boot.
Introduce a compile time FU540_ENABLED_HART_MASK option so that specific
harts can be selected for booting. As fu540 is a multicore, we should
boot all cores by default except hart 0.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Anup Patel [Fri, 25 Jan 2019 05:49:22 +0000 (11:19 +0530)]
include: Add separate header for OpenSBI version
Currently, the OpenSBI version is in top-level Makefile so
firmware linking to OpenSBI static library have no-way to
know OpenSBI version.
This patch moves OpenSBI version from top-level Makefile to
sbi/sbi_version.h header which provides OPENSBI_VERSION_MAJOR
and OPENSBI_VERSION_MINOR defines.
NOTE: the SBI spec (or SBI ecall interface) version is
different. The SBI spec version is provided by functions
sbi_ecall_version_major() and sbi_ecall_version_minor().
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Damien Le Moal [Wed, 23 Jan 2019 06:14:13 +0000 (15:14 +0900)]
docs: README.md update
Reformat to fit lines within 80 chars, fix hyperlinks, etc.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Wed, 23 Jan 2019 15:56:44 +0000 (00:56 +0900)]
docs/platform: Update QEMU platforms documentation
Mostly reformating. Some minor edits.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Thu, 24 Jan 2019 03:51:22 +0000 (12:51 +0900)]
docs/platform: Add top level document file
List supported platforms and point to the platform specific document.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Wed, 23 Jan 2019 07:21:59 +0000 (16:21 +0900)]
docs/firmware: Update FW_PAYLOAD documentation
Reformatting, typos, and various corrections.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Wed, 23 Jan 2019 07:00:35 +0000 (16:00 +0900)]
docs/firmware: Update FW_JUMP documentation
Reformatting, typos, and various corrections.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Wed, 23 Jan 2019 14:48:42 +0000 (23:48 +0900)]
docs/firmware: Add top level document file
Provide an overview of all supported firmware files and point to each
firmware type documentation file.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Tue, 22 Jan 2019 07:42:54 +0000 (16:42 +0900)]
docs: Contribution guideline update
Explicitely mention that this project adheres to the Developer
Certificate of Origin (DCO) and include this short text.
Also reformat the file to have lines bounded at 80 chars and add some
more details regarding the expected commit message format.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Wed, 23 Jan 2019 05:48:05 +0000 (14:48 +0900)]
top: Rename LICENSE file to COPYING.BSD
Also make sure that this file contains only the official BSD 2-clause
license text, nothing else.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Thu, 24 Jan 2019 07:56:47 +0000 (16:56 +0900)]
platform: add template platform files
Create commented template files to use as a base for new platforms
support implementation.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Anup patel [Thu, 24 Jan 2019 06:11:10 +0000 (11:41 +0530)]
all: Update copyright header in all files
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>
Anup Patel [Wed, 23 Jan 2019 03:30:35 +0000 (09:00 +0530)]
include: Use TRUE/FALSE as return values in sbi_platform_hart_disabled()
The sbi_platform_hart_disabled() returns bool hence explicitly return
TRUE or FALSE instead of 1 or 0.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Wed, 23 Jan 2019 02:43:29 +0000 (08:13 +0530)]
include: Rename ipi_inject() to ipi_send() for sbi_platform
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>
Anup Patel [Wed, 23 Jan 2019 02:33:20 +0000 (08:03 +0530)]
include: Drop MMIO from SBI_PLATFORM_HAS_MMIO_TIMER_VALUE
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>
Anup Patel [Tue, 22 Jan 2019 09:21:38 +0000 (14:51 +0530)]
include: Update documentation of sbi_platform after callback cleanup
The prototypes of sbi_platform callbacks have changed hence we
update related documentation.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Tue, 22 Jan 2019 09:17:03 +0000 (14:47 +0530)]
lib: Remove target_hart and hartid parameter from TIMER callbacks
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>
Anup Patel [Tue, 22 Jan 2019 09:03:41 +0000 (14:33 +0530)]
lib: Remove hartid parameter from IRQCHIP callbacks
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>
Anup patel [Tue, 22 Jan 2019 08:50:59 +0000 (14:20 +0530)]
lib: Remove source_hart and hartid parameter from IPI callbacks
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>
Anup Patel [Tue, 22 Jan 2019 08:22:25 +0000 (13:52 +0530)]
lib: Remove hartid paramter from early_init() and final_init() callbacks
We simplify early_init() and final_init() callbacks of sbi_platform
by removing "hartid" parameter.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Atish Patra [Mon, 21 Jan 2019 08:01:23 +0000 (00:01 -0800)]
docs: Typo fixes.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Bin Meng [Mon, 21 Jan 2019 14:29:59 +0000 (22:29 +0800)]
docs: Fix nits in firmware/fw_jump.md
Add a space before (FW_JUMP) to make it more readable.
This also fixes "No newline at end of file" warning.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Bin Meng [Mon, 21 Jan 2019 14:14:16 +0000 (22:14 +0800)]
top: Fix broken links in top-level README.md
There are 2 markdown links that are currently broken in top-level
README.md. Fix them so that github could render the URL correctly.
This also fixes "No newline at end of file" warning.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Anup Patel [Mon, 21 Jan 2019 17:53:23 +0000 (23:23 +0530)]
lib: Add doxygen style documentation for sbi_platform
This patch adds doxygen style documenation for struct sbi_platform
and related functions/macros/defines.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Tue, 22 Jan 2019 05:36:31 +0000 (11:06 +0530)]
lib: Update documentation of sbi_init()
We don't need to pre-enable MSIP in MIE CSR when
calling sbi_init() from firmware. This patch updates
documentation accordingly.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 21 Jan 2019 05:35:36 +0000 (11:05 +0530)]
Makefile: Don't install generic headers under <install_dir>/platform
We don't need to install generic headers separately for every
platforn under <install_dir>/platform. It is unnecessary duplication
of files hence updating install_libplatsbi in top-level makefile.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 21 Jan 2019 05:31:14 +0000 (11:01 +0530)]
docs: Add OpenSBI version to doxygen.cfg
The PDF document generated by doxygen should have OpenSBI version
hence this patch adds OpenSBI version to doxygen.cfg.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Atish Patra [Tue, 22 Jan 2019 02:17:45 +0000 (18:17 -0800)]
lib: Do not access mi/edeleg register if S mode is not present.
As per the RISC-V ISA, mideleg and medeleg registers should not exist
if S-mode is not present for a hart.
We shouldn't access these CSRs if non S-mode harts.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Tue, 22 Jan 2019 01:54:00 +0000 (17:54 -0800)]
lib: Allow sending IPI to self.
S-mode software may send IPI to self. For example,
tlbflush may be executed for the same hart.
Let the hart send IPI to itself. It's an overhead
but doesn't break anything. However, if we don't
allow it, it breaks if S-mode keep sending IPIs.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Mon, 21 Jan 2019 07:24:26 +0000 (23:24 -0800)]
lib: Fix ipi type update
IPIs are updated in scratch space by source hart.
However, different harts or same hart may want to
send different IPIs before previous IPI was read
by the target hart. Currently, previous IPI type
is overwritten in that case.
Use atomic bit set/clear operations to update IPIs.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Mon, 21 Jan 2019 07:23:28 +0000 (23:23 -0800)]
lib: Add atomic bit set/clear operations.
Add addtional functionlities for set/clear bits
atomically.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Fri, 18 Jan 2019 21:35:47 +0000 (13:35 -0800)]
lib: Move software interrupt enablement from firmware to lib
The secondary hart waits for an IPI signal from the boot hart to
executing boot code (hot boot). As a result, software generated
interrupts have to be enabled for secondary harts before waiting for
the boot hart boot completion IPI signal.
Enabling software generated interrupts (IPI) can be done independently
of the firmware code and moved to libsbi code so that the different
firmware do not have to implement this.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Anup Patel [Mon, 21 Jan 2019 11:23:46 +0000 (16:53 +0530)]
lib: Use AMO instructions whenever __riscv_atomic is defined
We should use AMO instructions whenever __riscv_atomic is
defined (i.e. atomics are supported). We use LR/SC only when
__riscv_atomic is not defined.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Damien Le Moal [Fri, 18 Jan 2019 07:28:32 +0000 (16:28 +0900)]
sbi: Add ecall helpers
Define sbi_ecall_console_puts() using sbi_ecall_console_putchar()
renamed as sbi_ecall_console_putc() and remove the hardcoded version
of the same funtion in the test payload code.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Fri, 18 Jan 2019 07:09:14 +0000 (16:09 +0900)]
payload: rename dummy payload to test payload
Use a more neutral term more representative of this payload intent.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Mon, 14 Jan 2019 04:00:37 +0000 (13:00 +0900)]
kendryte/k210: Add device tree support
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>
Damien Le Moal [Fri, 18 Jan 2019 04:46:31 +0000 (13:46 +0900)]
kendryte/k210: Fix console
Clear console input when intializing it.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Fri, 18 Jan 2019 06:57:31 +0000 (15:57 +0900)]
Makefile: Improve readability
Repeating "ifdef CROSS_COMPILE" multiple times does not help with
readability. Simplify by grouping compilation command setup under a
single ifdef statement.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Fri, 18 Jan 2019 06:49:37 +0000 (15:49 +0900)]
Makefile: Add support for device tree compilation
Add rules to compile dts files into dtb files using the device tree
compiler (dtc). A platform can specify the DTS file to compile using
the platform-dtb-y variable. The flattened device tree binary file to be
used for building the final polatform firmware can be specified using
the new FW_PAYLOAD_FDT firmware configuration option to point to the
automatically compiled FDT file. Using the existing FW_PAYLOAD_FDT_PATH
configuration option is still possible and will take precedence over
the FW_PAYLOAD_FDT definition.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Fri, 18 Jan 2019 04:45:08 +0000 (13:45 +0900)]
lib: code cleanup
Use commonly accepted styles: newlines after declarations and before
return to make the code more readable.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Fri, 18 Jan 2019 04:18:25 +0000 (13:18 +0900)]
lib: Fix banner
Define the "OpenSBI" logo string as a macro renamed BANNER, since
it is one rather than a logo.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Mon, 14 Jan 2019 02:17:25 +0000 (11:17 +0900)]
build: Introduce FW_PAYLOAD_ALIGN
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>
Anup Patel [Fri, 18 Jan 2019 04:58:58 +0000 (10:28 +0530)]
platform: Fix compile error caused by standard includes
Avoid using standard includes namely stdint.h, string.h, stdlib.h, etc.
All standard include except stddef.h give compilation error due
to differences in RISC-V toolchain configuration. Typically, the
compilation error is related to "gnu-stubs-lp64.h".
This patch fixes compile error caused by standard includes by
providing substitutes of definetions provided by standard includes
wherever required.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Atish Patra [Wed, 9 Jan 2019 09:17:41 +0000 (01:17 -0800)]
platform: No need to pass context id for plic fixup.
PLIC DT entry fixup can be done by comparing external
interrupt number instead of context id. No need to invoke
fixup for each plic context.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Wed, 9 Jan 2019 08:52:02 +0000 (00:52 -0800)]
platform: Modify DT using libfdt
Perform following DT updates.
1. Mask hart if mmu is not supported.
2. Add stdout-path under chosen node.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Wed, 9 Jan 2019 08:49:35 +0000 (00:49 -0800)]
docs: Add licensing seciton for external projects.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Fri, 18 Jan 2019 00:42:41 +0000 (16:42 -0800)]
platform: Remove string functions from tinyfdt.c
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>
Atish Patra [Wed, 9 Jan 2019 08:49:10 +0000 (00:49 -0800)]
platform: Include libfdt & libc.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Wed, 9 Jan 2019 08:47:14 +0000 (00:47 -0800)]
platform: Rename fdt.c to tinyfdt.c
Libfdt already have fdt.c and fdt.h.
Rename both fdt.* present in openSBI to tinyfdt.*
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Wed, 9 Jan 2019 08:42:37 +0000 (00:42 -0800)]
platform: Add libfdt support.
Some of the platform (i.e. SiFive FU540) requires Device
Tree modification before it is passed to higher stages.
Add libfdt support now to help this process. Libfdt should
only be included per platform basis.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Atish Patra [Fri, 18 Jan 2019 00:38:55 +0000 (16:38 -0800)]
platform: Add minimal libc support.
libfdt requires minimal libc support. Absoultely
minimum functions are added in libc.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Anup Patel [Mon, 14 Jan 2019 09:30:15 +0000 (15:00 +0530)]
include: Add documentation for sbi_trap_regs and friends
This patch adds doxygen style documentation for struct sbi_trap_regs
and related macros/defines/functions.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 14 Jan 2019 09:23:52 +0000 (14:53 +0530)]
include: Add __packed define for packed structures
This patch adds __packed define for specifying packed
attribute of structures.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 14 Jan 2019 08:30:32 +0000 (14:00 +0530)]
include: Add documentation for sbi_scratch and friends
This patch adds doxygen style documentation for struct sbi_scratch
and related helper macros/defines.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 14 Jan 2019 08:28:29 +0000 (13:58 +0530)]
lib: Add documentation for sbi_init() API
This patch adds doxygen style documentation for sbi_init() API.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 14 Jan 2019 08:25:35 +0000 (13:55 +0530)]
include: Add __noreturn define for noreturn function attribute
There are quite a few noreturn functions in OpenSBI hence
we add commong __noreturn define for noreturn functin attribute.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 14 Jan 2019 06:56:32 +0000 (12:26 +0530)]
docs: Update title in contributing.md
The patch updates title in contributing.md to match
other .md files under docs/ directory.
Signed-off-by: Anup Patel <anup.pate@wdc.com>
Anup Patel [Mon, 14 Jan 2019 06:18:38 +0000 (11:48 +0530)]
top: Update top-level README.md to build/install documentation PDF
This patch updates top-level README.md for steps required to build
and install documentation PDF.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 14 Jan 2019 06:55:01 +0000 (12:25 +0530)]
Makefile: Add make targets to build and install documentation
This patch extends top-level makefile to build and install
documentation. The 'docs' make target is for building the
documentation PDF whereas 'install_docs' make target is for
installing the documentation PDF.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Fri, 4 Jan 2019 03:15:36 +0000 (08:45 +0530)]
Makefile: Use '=' instead of '?=' for make variables
The '?=' will not assign value if the target make variable is
overriden via command-line or is set in environment variable.
On other hand, '=' will not assign value only if variable is
overriden via command-line parameter.
It is quite common to have CC, AS, CPP, LD, etc to be set as
environment variables pointing to native compiler and binutils.
If '-rR' option is not set in MAKEFLAGS then this results in
compile error because '?=' will use the native compiler and
binutils. If '-rR' option is set in MAKEFLAGS then this again
results in compile error because CC, AS, CPP, etc are set to
empty strings which causes '?=' to use empty string as compiler
and binutils.
To handle this, we use '?=' only when CROSS_COMPILE is not
defined and we use '=' when CROSS_COMPILE is defined.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Alistair Francis [Wed, 2 Jan 2019 22:44:35 +0000 (14:44 -0800)]
docs: Add a contributing document
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Wed, 2 Jan 2019 21:59:49 +0000 (13:59 -0800)]
Makefile: Force GCC to preprocess the linker file
To avoid this message (and subsequent errors):
warning: linker input file unused because linking not done
force GCC to treat the linker script preprocessing as a C file.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Sat, 22 Dec 2018 00:44:55 +0000 (16:44 -0800)]
Makefile: Convert to a more standard format
Convert the Makefile to a more standard format and don't forcefully
overwrite a users enviroment.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Sat, 22 Dec 2018 00:09:03 +0000 (16:09 -0800)]
Makefile: Use generic flags for the firmware
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Wed, 2 Jan 2019 18:16:15 +0000 (10:16 -0800)]
Makefile: Use generic flags for the platform
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Alistair Francis [Wed, 2 Jan 2019 18:14:40 +0000 (10:14 -0800)]
Makefile: Support verbosity using standard V=1
Instead of using a confusing and custom option, allow verbose Makefile
with the standard V=1.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Anup Patel [Thu, 3 Jan 2019 06:48:47 +0000 (12:18 +0530)]
lib: Handle misaligned load/store on FP regs
This patch extends misaligned load/store trap handling to
handle FP regs as well.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Thu, 3 Jan 2019 05:07:43 +0000 (10:37 +0530)]
include: Add hard FP access macros and defines
This patch adds hardware floating-point (hard FP) access
macros and defines.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Alistair Francis [Thu, 3 Jan 2019 15:52:42 +0000 (07:52 -0800)]
Merge pull request #16 from damien-lemoal/master
Various fixes
Damien Le Moal [Thu, 3 Jan 2019 05:32:25 +0000 (14:32 +0900)]
platform: kendryte/k210: Simplify sysctl code
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>
Damien Le Moal [Thu, 3 Jan 2019 04:34:32 +0000 (13:34 +0900)]
platform: kendryte/k210: Declare local function static
k210_console_putc() and k210_console_init() are local functions. Declare
them as static.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Damien Le Moal [Mon, 31 Dec 2018 04:00:39 +0000 (13:00 +0900)]
Makefile: Fix messages
Instead of printing the generic "<build_directory>" and
"<install_directory>" strings, print the actual paths for the build
and install directories during "make clean" and "make distclean".
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Anup Patel [Wed, 2 Jan 2019 09:21:30 +0000 (14:51 +0530)]
include: Remove redundant tmp0 from struct sbi_scratch
The tmp0 member was added in struct sbi_scratch to assist
register save/restore at time of trap handling. This tmp0
is not unsed any more hence removing it.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 31 Dec 2018 07:07:28 +0000 (12:37 +0530)]
include: Move RISCV_TRAP_REGS_xyz defines to sbi_trap.h
The struct sbi_trap_regs related defines RISCV_TRAP_REGS_xyz should
be in sbi_trap.h so that we can keep these defines in-sync with changes
in struct sbi_trap_regs.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 31 Dec 2018 06:00:55 +0000 (11:30 +0530)]
include: Move RISCV_PLATFORM_xyz defines to sbi_platform.h
The struct sbi_platform related defines RISCV_PLATFORM_xyz should
be in sbi_platform.h so that we can keep these defines in-sync
with changes in struct sbi_platform.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 31 Dec 2018 05:49:20 +0000 (11:19 +0530)]
include: Move RISCV_SCRATCH_xyz defines to sbi_scratch.h
The struct sbi_scratch related defines RISCV_SCRATCH_xyz should
be in sbi_scratch.h so that we can keep these defines in-sync
with changes in struct sbi_scratch.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 31 Dec 2018 04:59:49 +0000 (10:29 +0530)]
include: Replace #csr with __ASM_STR(csr) in csr_xyz() macros
We replace #csr with __ASM_STR(csr) in all csr_xyz() macros
so that we can pass CSR number instead of CSR name when GCC
is not aware of CSR name.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Mon, 31 Dec 2018 04:55:42 +0000 (10:25 +0530)]
include: Remove redundant csr_read_n() and csr_write_n()
The patch removes redundant csr_read_n() and csr_write_n()
because same thing can be achieved by using __ASM_STR()
macro in csr_read() and csr_write() macros.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Fri, 28 Dec 2018 08:51:57 +0000 (14:21 +0530)]
docs: Add documenation for QEMU platforms
This patch adds documentation for qemu/virt and
qemu/sifive_u platform supports.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Fri, 28 Dec 2018 08:50:25 +0000 (14:20 +0530)]
top: Minor typo fixes in top-level README.md
This patch does minor typo fixes in top-level README.md.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Anup Patel [Thu, 27 Dec 2018 16:09:13 +0000 (21:39 +0530)]
lib: Redirect illegal instruction trap to S-mode when not handled
Currently, we fail with error SBI_ENOTSUPP when we are not able
to handle illegal instruction trap. Instead, we should just
redirect illegal instruction trap to S-mode when not handled.
This redirection of illegal instruction trap will help lazy
save/restore of floating point registers to work correctly in
Linux kernel.
Signed-off-by: Anup Patel <anup.patel@wdc.com>