Platform andes/ae350, ariane-fpga, qemu/virt and sifive/fu540 codes
have been updated to call this general DT fix-up helper.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

This adds a general device tree fix-up helper to do all required
device tree fix-ups for a typical platform.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

This replaces the FU540 specific cpu0 node "status" property fix-up
with the newly introduced generic fdt_cpu_fixup() helper.

Unlike previous logic, the helper routine does not test the "mmu-type"
property to determine which node we should fix up, instead it uses
sbi_platform_hart_disabled() API.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

Add a helper routine to updates the "status" property of a CPU node
in the device tree to "disabled" if that hart is in disabled state.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

As of today the upstream U-Boot & Linux kernel ships a device tree
that already has "stdout-path" properly set in the "/chosen" node.
This is the same with the QEMU 'sifive_u' machine. Hence the codes
to fix up the "stdout-path" in OpenSBI is not necessary.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

This calls fdt_reserved_memory_fixup() helper in the platform's
final_init() routine.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

This calls fdt_reserved_memory_fixup() helper in the platform's
final_init() routine.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

This calls fdt_reserved_memory_fixup() helper in the platform's
final_init() routine.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

This calls fdt_reserved_memory_fixup() helper in the platform's
final_init() routine.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

Now that we have a dedicated fdt_helper.c file for DT releated
helper routines, move plic_fdt_fixup() codes from plic.c to
fdt_helper.c and rename it to fdt_plic_fixup() at the same time,
to keep name consistency in the same file.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

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>

Add a helper routine to insert a child node of the reserved memory
node in the device tree that describes the protected memory region
done by OpenSBI via PMP.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

Pull fdt_addresses.o in for fdt_address_cells() & fdt_size_cells().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

Currently pmp_get() returns the log2 length of the PMP memory
region size. The caller has to calculate the size based on that
and the same codes are duplicated.

Update this function to return decoded size directly.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

We now support building sifive/fu540 as a 32-bit platform. Add it
in the 32-bit platform list of binary archive script.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

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>

The template platform codes should set per-HART stack size to 8KB
to avoid possible mistakes of future platform ports.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

Recent commit

  4a603eb6 ("platform: kendryte/k210: Set per-HART stack size to 8KB")

forgot to update ariane-fpga codes, and the following commit

  678c3c36

 ("include: sbi_scratch: Set per-HART scratch size to 4KB")

changed the per-HART scratch size to 4KB, which potentially breaks
ariane-fpga platform.

This patch set per-HART stack size of ariane-fpga to 8KB for consistency.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

The default install directory is not being removed correctly by
distclean make target due to recent changes. This patch fixes
distclean make target to fix default install directory removal.

Fixes: 82ae8e8f

 ("makefile: Do setup of the install target
more flexible")
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

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>

Now that sbi_hart_id_to_scratch() is optimized, we don't need
the "if ()" statement. Also, the hstate local variable is
redundant so we remove that as well.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

This patch optimizes _hartid_to_scratch() in following ways:
1. Use caller saved registers instead of callee saved registers
   so that we don't need to save/restore registers on stack
2. Remove second redundant mul instruction by re-arranging
   instructions

Overall, we reduce 9 instructions in _hartid_to_scratch()
implementation.

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>

The sbi_hart_id_to_scratch() just forwards call to firmware specific
hartid_to_scratch() callback so we make sbi_hart_id_to_scratch() as
macro in sbi_scratch.h instead of regular function in sbi_hart.c.

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>

Sync with latest libfdt v1.5.1 release source codes.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

Add two macros in preparation to sync libfdt codes to latest v1.5.1
release from upstream.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

We currently have TRUE/FALSE, but it could be convenient to have
true/false as well.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

Signed-off-by: Panagiotis Peristerakis <perister@ics.forth.gr>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

Compile time checks of __riscv_compressed can only check if OpenSBI is
being compiled using compressed instructions or not. Checking this macro
does not indicate if an instruction that generated a misaligned trap is
a compressed instruction or not.

Since the misaligned trap handling code inspects instructions _C_ bits
to detect compressed instructions, we can remove all static checks on
__riscv_compressed and dissociate hanlding of misaligned traps and
OpenSBI compilation.

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>

Upstream U-Boot now have SMP support and doesn't require any additional
patches for HiFive Unleashed.

Update the documentation.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

The HART available mask and related APIs are now totally redundant
because of more extensive HART state machine implemented by sbi_hsm.

Due to above, we remove HART available mask and related APIs.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

This patch replaces use of sbi_hart_available_mask() API with
sbi_hsm_hart_started_mask() API.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

This patch replaces use of sbi_hart_available_mask() API with
sbi_hsm_hart_started_mask() API.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

This patch replaces use of sbi_hart_available_mask() API with
sbi_hsm_hart_started_mask API.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

This patch introduce sbi_hsm_hart_started_mask() API as
a replacement of sbi_hart_available_mask() API.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

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>

The coldboot_wait_bitmap is of fixed size and has __riscv_xlen
bits. This limits us to scale beyond __riscv_xlen HARTs hence
we replace coldboot_wait_bitmap with coldboot_wait_hmask which
is of type struct sbi_hartmask.

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>

The coldboot wait APIs are only used by sbi_init.c so no point in
having coldboot related code in sbi_hart.c.

As per-above rationale, we move all coldboot wait related APIs to
sbi_init.c as static/local functions.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

Instead of using single ulong as source mask for sbi_tlb_info,
we use sbi_hartmask. This way sbi_tlb_info can easily scale
for large number of HARTs.

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>

We introduce SBI_TLB_INFO_INIT() helper macro to help easy
initialization of struct sbi_tlb_info which is passed to the
sbi_tlb_request() API.

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>

We only allow HARTs with HARTID less than SBI_HARTMASK_MAX_BITS in
sbi_init() function so that sbi_hartmask can safely used across
OpenSBI sources.

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>