Commit Graph

21 Commits

Author SHA1 Message Date
Ville Juven
42d0e356c2 arch/addrenv: Change group_addrenv_t to arch_addrenv_t
This is preparation for moving address environments out of the group
structure into the tcb.

Why move ? Because the group is destroyed very early in the exit phase,
but the MMU mappings are needed until the context switch to the next
process is complete. Otherwise the MMU will lose its mappings and the
system will crash.
2023-01-27 23:17:01 +08:00
Xiang Xiao
9ab3417882 arch/risc-v: Move __XSTR, FLOAD/FSTORE and REGLOAD/REGSTORE to the right place
1.Move __XSTR from include/arch.h to include/irq.h
2.Move  FLOAD/FSTORE and REGLOAD/REGSTORE from include/arch.h to src/common/riscv_internal.h

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-07-04 13:25:56 +03:00
Xiang Xiao
3d1ce144df arch: Move up_getsp from arch.h to irq.h
since all other special register operation in irq.h

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-07-01 10:44:55 -03:00
Xiang Xiao
efce8bd198 Revert "arch/risc-v: use STACK_FRAME_SIZE for in S-mode syscall asm"
This reverts commit 9b7f9867aa.
2022-05-01 11:31:01 +03:00
Ville Juven
57127b9429 RISC-V: Initial support for CONFIG_BUILD_KERNEL
This implements initial support for kernel build (address environments,
page allocator) for RISC-V.

This is done a bit differently compared to the ARMV7 implementation:

- Support implemented for Sv39 MMU, however the implementation should be
  extensible for other MMU types also.
- Instead of preserving and moving the L1 references around, a canonical
  approach is used instead, where the page table base address register
  is switched upon context switch.
- To preserve a bit of memory, only a single L1/L2 table is supported,
  this gives access to 1GiB of virtual memory for each process, which
  should be more than enough.

Some things worth noting:
- Assumes page pool is mapped with vaddr=paddr mappings
- The CONFIG_ARCH_XXXX_VBASE and CONFIG_ARCH_XXXX_NPAGES values are
  ignored, with the exception of CONFIG_ARCH_DATA_VBASE which is used
  for ARCH_DATA_RESERVE
- ARCH_DATA_RESERVE is placed at the beginning of the userspace task's
  address environment
2022-04-29 02:02:15 +08:00
Petro Karashchenko
9b7f9867aa arch/risc-v: use STACK_FRAME_SIZE for in S-mode syscall asm
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
2022-04-04 12:05:53 +08:00
Petro Karashchenko
870ca12146 arch/risc-v: get wider visibility for arch instruction macros
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
2022-04-01 10:31:24 +08:00
Petro Karashchenko
36b0b95eb1 arch/risc-v: include csr.h indirectly through nuttx/irq.h
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
2022-03-31 19:34:52 +08:00
Huang Qi
e8552156b6 arch/risc-v: Remove unneeded ISA specifc interface
They are not really defined and used in any where:
uint32_t up_getmisa(void);
uint32_t up_getarchid(void);
uint32_t up_getimpid(void);
uint32_t up_getvendorid(void);
uint32_t up_gethartid(void);

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2022-02-25 20:36:16 +08:00
Huang Qi
a6662c2887 arch/risc-v: Refine arch.h
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2022-01-04 14:46:24 +08:00
Huang Qi
d71cfc178a arch/risc-v: Remove unneeded kconfigs
CONFIG_RV32IM_HW_MULDIV can be safely removed since this behavior is
controlled by M extension.

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2021-12-28 05:02:42 -06:00
Huang Qi
c2e8c92b25 arch/risc-v: Refine Toolchain.defs
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2021-12-28 00:30:10 -06:00
Alin Jerpelea
231b8518b7 NuttX: Ken Pettit: update licenses to Apache
Ken Pettit has submitted the ICLA and we can migrate the licenses
 to Apache.

Sebastien Lorquet has submitted the ICLA and we can migrate the licenses
 to Apache.

Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-04-10 06:42:19 -05:00
Abdelatif Guettouche
0f2b774dec arch/risc-v: Remove unused and undefined file section "Public Variables"
Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
2021-01-27 18:40:10 -08:00
Xiang Xiao
d42c5a0bf6 arch/risc-v: Move csr.h to common place
since CSR definition is same for 32bit and 64bit arch

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-12-19 08:41:33 +09:00
Ouss4
6eb6d31c32 Fix nxstyle complaints 2020-05-06 21:56:40 -06:00
Ouss4
a4dd967440 arch/: Implement up_tls_info() for the rest of the architectures. 2020-05-06 21:56:40 -06:00
Nathan Hartman
679b4fbee2 arch: Fix included directed -> included directly
This typo had been copied and pasted into numerous irq and syscall
headers.
2020-04-05 22:31:15 +01:00
Xiang Xiao
68951e8d72 Remove exra whitespace from files (#189)
* Remove multiple newlines at the end of files
* Remove the whitespace from the end of lines
2020-01-31 09:24:49 -06:00
Gregory Nutt
1c5ec07414 arch/: Remove dangling space at the end of lines. 2017-06-28 13:16:48 -06:00
Ken Pettit
201a32cf8c Add support for the RISC-V architecture and configs/nr5m100-nexys4 board. I will be making the FPGA code for this available soon (within a week I would say). The board support on this is pretty thin, but it seems like maybe a good idea to get the base RISC-V stuff in since there are people interested in it. 2016-10-16 09:47:07 -06:00