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This patch increases OpenSBI version to 0.2.
Signed-off-by: Anup Patel <[email protected]>
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This patch extends our low-level trap handler in fw_base.S for
handling M-mode to M-mode traps without overwritting stack.
Signed-off-by: Anup Patel <[email protected]>
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The unsigned long is always machine word size. This means it is
4 bytes on 32bit system and 8 bytes on 64bit system.
This patch adds PRILX define for sbi_printf() which will help us
print unsigned long without worrying whether it is 32bit or 64bit
system.
Signed-off-by: Anup Patel <[email protected]>
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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 <[email protected]>
Signed-off-by: Atish Patra <[email protected]>
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Signed-off-by: Alistair Francis <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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The sbi_platform_hart_disabled() returns bool hence explicitly return
TRUE or FALSE instead of 1 or 0.
Signed-off-by: Anup Patel <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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The prototypes of sbi_platform callbacks have changed hence we
update related documentation.
Signed-off-by: Anup Patel <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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We simplify early_init() and final_init() callbacks of sbi_platform
by removing "hartid" parameter.
Signed-off-by: Anup Patel <[email protected]>
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This patch adds doxygen style documenation for struct sbi_platform
and related functions/macros/defines.
Signed-off-by: Anup Patel <[email protected]>
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Add addtional functionlities for set/clear bits
atomically.
Signed-off-by: Atish Patra <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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This patch adds doxygen style documentation for struct sbi_trap_regs
and related macros/defines/functions.
Signed-off-by: Anup Patel <[email protected]>
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This patch adds __packed define for specifying packed
attribute of structures.
Signed-off-by: Anup Patel <[email protected]>
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This patch adds doxygen style documentation for struct sbi_scratch
and related helper macros/defines.
Signed-off-by: Anup Patel <[email protected]>
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This patch adds doxygen style documentation for sbi_init() API.
Signed-off-by: Anup Patel <[email protected]>
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There are quite a few noreturn functions in OpenSBI hence
we add commong __noreturn define for noreturn functin attribute.
Signed-off-by: Anup Patel <[email protected]>
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This patch adds hardware floating-point (hard FP) access
macros and defines.
Signed-off-by: Anup Patel <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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We rename target_hart parameter of PMP platform callbacks to
hartid for clarity because the parameter represents current
hartid.
Signed-off-by: Anup Patel <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
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This patch moves all ECALL defines to sbi_ecall_interface.h so
that it can be shared with firmware payloads.
Signed-off-by: Anup Patel <[email protected]>
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We generally don't get misaligned load/store traps from Linux/U-Boot
compiled using GCC 8.2 or higher but this is not true with older
GCC toolchains. To tackle this we add misaligned load/store trap
handling adopted from BBL sources but much more simpler.
(Note: BBL sources can be found at https://github.com/riscv/riscv-pk.git)
Signed-off-by: Anup Patel <[email protected]>
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This patch moves all instruction encoding macros to
riscv_encoding.h.
Signed-off-by: Anup Patel <[email protected]>
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The hart_count and hart_stack_size information is already available
in "struct sbi_platform" so we use that instead of depending on
PLAT_HART_COUNT and PLAT_HART_STACK_SIZE.
Signed-off-by: Anup Patel <[email protected]>
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As of now, uboot doesn't have support for SMP.
Moreover, unleashed board has a E51 hart which
doesn't not support S mode.
We should only boot only 1 non-zero hart.
Signed-off-by: Atish Patra <[email protected]>
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Conditionnally delegate page fault exceptions from M mode to S mode
based on the platform features.
Signed-off-by: Damien Le Moal <[email protected]>
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Use this helper instead of hardcoding csr_read(mhartid).
Signed-off-by: Damien Le Moal <[email protected]>
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Cleanup sbi_hart_boot_nexti() code, adding messages for clarity and
rename the function to sbi_hart_switch_mode() to reflect what the
function actually does.
Signed-off-by: Damien Le Moal <[email protected]>
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Allow a platform to report its supported features in more details.
The new features defined are:
* SBI_PLATFORM_HAS_PMP
* SBI_PLATFORM_HAS_SCOUNTEREN
* SBI_PLATFORM_HAS_MCOUNTEREN
In addition, define the macro SBI_PLATFORM_DEFAULT_FEATURES as the set
of features that are generally expected to be supported by a Linux
capable platform.
Operations touching the features controlled with these falgs are not
executed if the platform does not set the corresponding feature flags.
Signed-off-by: Damien Le Moal <[email protected]>
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Signed-off-by: Atish Patra <[email protected]>
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Signed-off-by: Anup Patel <[email protected]>
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