Commit Graph

28 Commits

Author SHA1 Message Date
Ville Juven
31b916c485 MPFS: Add kernel space mappings
Mappings are done with vaddr=paddr.
- I/O space mapped with two gigapages
- Kernel space mapped to statically allocated page tables. 2MB of kernel
  memory is supported.
- Page pool is mapped to the kernel space, to allow virtual memory access
  for the kernel e.g. to initialize the page memory when it is allocated.
2022-05-02 16:13:15 +08:00
Xiang Xiao
aeb9c5d822 boards: Move -fno-strict-aliasing from Make.defs to Toolchain.defs
and migrate MAXOPTIMIZATION into ARCHOPTIMIZATION

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-05-01 11:36:41 +03:00
Xiang Xiao
8f8ee25a9c boards: Move -g from Make.defs to Toolchain.defs
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-04-25 16:23:03 +03:00
Xiang Xiao
25d819253b boards/risc-v: Remove "MAXOPTIMIZATION = -Os" from Make.defs
since it is already defined in Toolchain.defs

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-04-25 07:58:00 +03:00
Xiang Xiao
75326e563d boards: Move -fno-common from Make.defs to Toolchain.defs
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-04-25 07:57:29 +03:00
Xiang Xiao
547c85b0ae boards: Switch the elf link script to binfmt/libelf/gnu-elf.ld
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-04-24 17:02:37 +02:00
chao.an
64d7326ed5 compile/opt: add config DEBUG_OPT_UNUSED_SECTIONS
Enable this option to optimization the unused input sections with the
linker by compiling with " -ffunction-sections -fdata-sections ", and
linking with " --gc-sections ".

Signed-off-by: chao.an <anchao@xiaomi.com>
2022-04-22 01:37:23 +08:00
Gustavo Henrique Nihei
06d0a9f1ad xtensa|risc-v: Make CXX exception and RTTI depend on Kconfig options
Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
2022-03-30 11:19:29 +08:00
Ville Juven
30c25a95f3 MPFS: Fix error in flat build linker script
Use sram instead of ksram (copy&paste error)
2022-03-28 14:05:51 +03:00
Ville Juven
13fd93ed2a MPFS: Add linker script for CONFIG_BUILD_KERNEL 2022-03-18 18:20:12 +08:00
Xiang Xiao
ee931c137f boards: Remove -fno-builtin
it's more efficent to generate the machine code directly if possible

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-03-10 19:46:01 +02:00
Xiang Xiao
163fe4ff0b boards: Replace CONFIG_CYGWIN_WINTOOL with CONVERT_PATH
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-02-20 21:15:36 +01:00
Alan Rosenthal
8defb843aa Remove duplicate linker script definitions
## Summary
A lot of linker scripts were listed twice, once for unix, once for windows.

This PR cleans up the logic so they're only listed once.

 ## Impact
Any opportunity to use a single source of truth and reduce lines of code is a win!

 ## Testing
CI will test all build
2022-02-17 02:55:25 +08:00
Masayuki Ishikawa
613cbbf688 boards: risc-v: Move -fno-common option to ARCHCFLAGS/ARCHCXXFLAGS
Summary:
- Apply the same style as sabre-6quad

Impact:
- None
- NOTE: esp32c3-devkit still remains old style because of link errors

Testing:
- Build only

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
2022-02-15 16:27:53 +08:00
Huang Qi
64130b4775 risc-v: Use _ebss instead of _default_stack_limit as idle stack base
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2022-02-13 14:37:57 +08:00
Huang Qi
0c28fe9831 boards: Remove unused NXFLAT flags from Make.defs
Since NXFLAT only avaliable on arm.

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2022-01-27 11:08:43 +08:00
Ville Juven
8a4881c4e5 Implement CONFIG_BUILD_PROTECTED with MMU
NOTE: THIS ONLY WORKS WHEN KERNEL RUNS IN M-MODE FOR NOW

This frees the PMP for other use, e.g. HART memory separation.

The page tables are statically allocated, 1 per level.

This feature is now behind CONFIG_MPFS_USE_MMU_AS_MPU, because
only the MPFS target supports this (others are not tested).

If the MMU is used for memory separation within a HART, the PMP must
still be configured to allow user access to the memory mapped for the
HART, because PMP *rekoves* access by default. At this point all of
the user memory as well as the kernel RAM are opened.

A more flexible solution for PMP configuration will follow.
2022-01-25 20:22:34 +08:00
Ville Juven
7eb726d57f Add proper user/kernel space linker scripts for knsh target
The old implementation used the default ld.script for the kernel side
which did not obey the memory.ld limits whatsoever.

Also, provide the user space addresses from the linker script to get rid
of the pre-processor macros that define (incorrect) default values for
the user space composition.
2022-01-25 20:22:34 +08:00
Xiang Xiao
04297c3ca3 board: Remove -fno-omit-frame-pointer from Make.defs
except sim arch, since this flag is set inside Toolschain.defs now

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-01-20 16:00:48 +01:00
Jukka Laitinen
fc3167b584 boards/riscv/mpfs: Remove reference to .vectors in linker scripts
There is no such section. Instead, place the object mpfs_head.o at the start of
the text.

Put mpfs_head.o directly into the arch library; there is no need to define
it separately in HEAD_ASRC.

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
2022-01-20 01:37:34 +08:00
Xiang Xiao
8bcdefafc9 board: Remove -fno-strength-reduce
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-01-19 00:14:03 +01:00
Eero Nurkkala
c67a1a4de1 risc-v/mpfs: ld-envm-opensbi.script: add all opensbi code to .text.sbi
Add the rest of the OpenSBI code to .text.sbi -section. They belong
to there. This frees up some space in the very limited eNVM.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
2022-01-14 10:10:24 +01:00
Eero Nurkkala
b4d2944df7 tools/mpfs: prepare OpenSBI image
Polarfire Icicle board has only (128K - 256) bytes for the bootloader
in the non-volatile eNVM. This space is barely enough for running NuttX.
If OpenSBI is selected, it will be placed in DDR. This all means the
nuttx.bin file grows into gigabyte size, filling the unused space (ddr -
envm) with zeroes.

The memory layout is as follows:

MEMORY
{
    ddr  (rx)          : ORIGIN = 0x80000000, LENGTH = 4M
    envm (rx)          : ORIGIN = 0x20220100, LENGTH = 128K - 256
    l2lim  (rwx)       : ORIGIN = 0x08000000, LENGTH = 1024k
    l2zerodevice (rwx) : ORIGIN = 0x0A000000, LENGTH = 512k
}

OpenSBI library is used as a separate binary, which is stored into
eMMC or SD-card. It is then loaded into its precise location in DDR.

Thus, we separate OpenSBI from NuttX and end up with two images
by utilizing the objcopy options:

  --only-section=sectionpattern (-j in short)
  --remove-section=sectionpattern (-R in short)

This is only valid when CONFIG_MPFS_OPENSBI is set.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
2022-01-04 19:45:14 +08:00
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
Eero Nurkkala
b128ce334f mpfs: introduce OpenSBI
OpenSBI may be compiled as an external library. OpenSBI commit d249d65
(Dec. 11, 2021) needs to be reverted as it causes memcpy / memcmp to
end up in the wrong section. That issue has yet no known workaround.

OpenSBI may be lauched from the hart0 (e51). It will start the U-Boot
and eventually the Linux kernel on harts 1-4.

OpenSBI, once initialized properly, will trap and handle illegal
instructions (for example, CSR time) and unaligned address accesses
among other things.

Due to size size limitations for the mpfs eNVM area where the NuttX
is located, we actually set up the OpenSBI on its own section which
is in the bottom of the DDR memory. Special care must be taken so that
the kernel doesn't override the OpenSBI. For example, the Linux device
tree may reserve some space from the beginning:

  opensbi_reserved: opensbi@80000000 {
      reg = <0x80000000 0x200000>;
      label = "opensbi-reserved";
  };

The resulting nuttx.bin file is very large, but objcopy is used to
create the final binary images for the regions (eNVM and DDR) using
the nuttx elf file.

Co-authored-by: Petro Karashchenko <petro.karashchenko@gmail.com>
Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
2021-12-22 20:48:12 -06:00
Eero Nurkkala
c7cf9fd9d2 mpfs: board Make.defs: add bootloader linker option
Use the linker script used with bootloaders that start
from the eNVM.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
2021-10-21 22:40:26 -05:00
Eero Nurkkala
ad76b6733c mpfs: boards: add ld-envm.script
This configuration is used when flashing nuttx as a bootloader
in the eNVM region.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
2021-10-21 22:40:26 -05:00
Janne Rosberg
d6205642ab add support for PolarFire SoC and icicle board
Co-authored-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
2021-05-24 22:55:44 -05:00