lwu exists under the current rv64 and should also exist under the rv128
in the future, so I modified the conditions of conditional compilation
so that it can adapt to the future situation
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
pmp_set/pmp_get calculates the location of the CSR register separately
through conditional compilation. In the case of non-32-bit and 64-bit,
we can report an error directly through #error without putting it at
runtime
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
The commit 69d7e53 disables the -m(no-)save-restore option for
clang, but clang11 supports this option. This patch uses the
output information of the compiler to check whether the compiler
supports this option.
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
We should clear A bits in prot variable before enabling A_NA4 or A_NAPOT.
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
We use BUG() macro in csr_read_num(), csr_write_num(), and
misa_string() functions for unhandled cases.
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Three macros are added. One is called BUG, which is used to put in an
unreachable branch. One is called BUG_ON, which is used to check bugs
and assert conditions are opposite. One is called SBI_ASSERT, used for
assertion checking.
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
The original version of ctz will cause an endless loop, if the parameter
passed in is 0. This commit fixes this bug.
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
The previous code uses _start as the load address, this default .entry is
the first segment, using _fw_start does not need to make this assumption.
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
The unsigned length may be 4 bytes or 8 bytes, amoadd.w only applies
to 4 bytes hence this patch.
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
csr_read_allowed/csr_read_allowed requires trap.case to detect the results,
but if no exception occurs, the value of trap.case will remain unchanged,
which makes the detection results unreliable. Add code to initialize
trap.case to 0.
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
There are two copies of the same abnormal exit code, this patch deletes one
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
The old code may corrupt the code of the waiting hart hence this patch
keeps waiting HART within relocation code range at time of relocation.
Signed-off-by: Xiang W <wxjstz@126.com>
Acked-by: Anup Patel <anup.patel@wdc.com>
This patch extends relocation to handle overlapping load and link
addresses.
The updated relocation will work fine in most cases except when the
relocate copy loop itself falls in overlapping load and link addresses.
Signed-off-by: Xiang W <wxjstz@126.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
When I tried to start opensbi with coreboot, I found that aligning to a 16-byte
boundary would make a copy error.
Corrected to align to an machine word length boundary.
Signed-off-by: Xiang Wang <wxjstz@126.com>
Multi-core communication via memory requires the addition of a barrier
instructions to ensure cache coherency.
Signed-off-by: Xiang Wang <wxjstz@126.com>
