Implement a driver for LoongArch CPU solely for gathering
some information bits from FDT and CPU level config registers.
Signed-off-by: Jiaxun Yang
---
drivers/cpu/Kconfig | 6 ++
drivers/cpu/Makefile| 1 +
drivers/cpu/loongarch_cpu.c | 148
Implement a timer driver for LoongArch architecture driver.
It's synced in hardware for every core in a system, and frequency
information can be gathered from CPUCFG instruction.
It is not described in fdt, thus I have to declare a DRVINFO
for it.
Signed-off-by: Jiaxun Yang
---
drivers/
Yet another generic QEMU VIRT machine.
QEMU placed FDT in memory before launching U-Boot, so we
can just obtian FDT here.
Signed-off-by: Jiaxun Yang
---
arch/loongarch/Kconfig| 5 ++
arch/loongarch/dts/qemu-loongarch64.dts | 9 +++
board/emulation/qemu
They are all coming from UEFI spec, Microsoft PE sepc,
or IANA websites.
Signed-off-by: Jiaxun Yang
---
boot/bootmeth_efi.c | 2 ++
include/asm-generic/pe.h | 2 ++
include/config_distro_bootcmd.h | 5 +
include
Implement crt, reloc, linker scripts, wire things up in
Makefiles and Kconfig.
Signed-off-by: Jiaxun Yang
---
arch/loongarch/config.mk | 4 +
arch/loongarch/lib/Makefile | 12 ++
arch/loongarch/lib/crt0_loongarch_efi.S | 182 +++
arch
Commit for directories, Kconfig, Makefile and headers
Some of them are copied from linux, some of them are derived
from other architectures, the rest are wriiten on my own.
Signed-off-by: Jiaxun Yang
---
arch/Kconfig | 15 +
arch/loongarch/Kconfig
64-2020.07-xtensa-dc232b-elf.tar.gz
Signed-off-by: Jiaxun Yang
---
Changes in v2:
- Fix noMMU memory mappings
- Addressing Max's comments in other patches
- Link to v1:
https://lore.kernel.org/r/20240519-qemu-xtensa-v1-0-8fff0cb11...@flygoat.com
---
Jiaxun Yang (10):
xtensa: Move dram
This is a board level stuff.
Signed-off-by: Jiaxun Yang
---
arch/xtensa/cpu/cpu.c | 5 -
board/cadence/xtfpga/xtfpga.c | 5 +
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/xtensa/cpu/cpu.c b/arch/xtensa/cpu/cpu.c
index abcd8f7984fa..d2266812229c 100644
So U-Boot is using _end symbol to detect location of devicetree
appended at the end of the ROM.
It needs to be calculated based on end of .data load address,
as in our lds .current address is address in RAM.
Signed-off-by: Jiaxun Yang
---
arch/xtensa/cpu/u-boot.lds | 2 ++
arch/xtensa
For PTP_MMU our physical address is not directly mapped
into virtual address space, we need to access physical
memory from those fixed map segments.
Implement phys_to_virt and virt_to_phys hook to reflect
this setting.
Signed-off-by: Jiaxun Yang
---
arch/xtensa/include/asm/addrspace.h | 2
u-boot.elf target requires it to work.
Signed-off-by: Jiaxun Yang
---
v2:
- Concerning big endian CPU
Note: CONFIG_SYS_BIG_ENDIAN will never be set for xtensa
for now, but as we don't have big endian headers for xtensa
core either I think it's fine for now. This will be impr
They are all directly imported from Linux kernel.
Reviewed-by: Max Filippov
Signed-off-by: Jiaxun Yang
---
arch/xtensa/Kconfig | 27 ++
arch/xtensa/include/asm/platform/simcall-gdbio.h | 34 +++
arch/xtensa/include/asm/platform/simcall-iss.h | 73
Add xtensa semihosting driver.
It can't use regular semihosting driver as Xtensa's has it's own
semihosting ABI.
Signed-off-by: Jiaxun Yang
---
v2:
- Fix simc_serial_pending implementation
- Get puts work
---
drivers/serial/Kconfig | 18
Implement various CPU related functions.
I'm actually just using it to get cpu clock frequency.
Signed-off-by: Jiaxun Yang
---
drivers/cpu/Kconfig | 6 +++
drivers/cpu/Makefile | 1 +
drivers/cpu/xtensa_cpu.c | 117 +++
3 files ch
It is required to get it xtensa OF_UPSTREAM work.
Reviewed-by: Sumit Garg
Signed-off-by: Jiaxun Yang
---
dts/upstream/src/xtensa/Makefile | 14 ++
1 file changed, 14 insertions(+)
diff --git a/dts/upstream/src/xtensa/Makefile b/dts/upstream/src/xtensa/Makefile
new file mode 100644
Introduce the new board, define every bits.
Signed-off-by: Jiaxun Yang
---
v2:
- Fix maintainers entries
- Refine address mapping for noMMU machine
- Add a dtsi overlay to describe different memory size for noMMU system
---
arch/xtensa/Kconfig | 5
Introduce the board and provide instructions on how to get
it work.
Signed-off-by: Jiaxun Yang
---
doc/board/emulation/index.rst | 1 +
doc/board/emulation/qemu-xtensa.rst | 33 +
2 files changed, 34 insertions(+)
diff --git a/doc/board/emulation
在2024年5月23日五月 下午4:25，Tom Rini写道：
> On Wed, May 22, 2024 at 04:34:43PM +0100, Jiaxun Yang wrote:
>
>> Hi all,
>>
>> Sorry for flooding the mailing list recently, yet another huge RFC series
>> ahead.
>>
>> So after working on MIPS, arm64be and Xte
在2024年5月23日五月 下午5:14，Heinrich Schuchardt写道：
[...]
> Looking at
> https://loongson.github.io/LoongArch-Documentation/LoongArch-toolchain-conventions-EN.html:
>
> There the following symbols are mentioned:
>
> __loongarch__
> __loongarch_grlen
>
>
> Table 15.
> C/C++ Built-in Macros Provided for C
在2024年5月23日五月 下午5:26，Heinrich Schuchardt写道：
>> diff --git a/arch/loongarch/lib/reloc_loongarch_efi.c
>> b/arch/loongarch/lib/reloc_loongarch_efi.c
>> new file mode 100644
>> index ..32a7d792103d
>> --- /dev/null
>> +++ b/arch/loongarch/lib/reloc_loongarch_efi.c
>
> The code seems t
vidconsole. My current
appraoch is to register virtio_init in init_sequence_r, just after
pci_init. Is this a viable approach? Should I introduce a config
like CONFIG_VIRTIO_INIT_R to allow it to be selected by boards?
Thanks
Signed-off-by: Jiaxun Yang
---
Changes in v2:
- Fix left over in previous
This driver is implemened based on latest VirtIO spec.
It follows operation prodcure as defined in the spec.
It implemented multihead (mirroring) support as well.
Signed-off-by: Jiaxun Yang
---
v2:
- Add big endian code path
- Reword typical resolution for Kconfig symbol
spec to reflect this
nature.
Signed-off-by: Jiaxun Yang
---
v2:
- Remove an unused variable
---
include/efi_api.h| 1 +
lib/efi_loader/efi_gop.c | 8 +++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/include/efi_api.h b/include/efi_api.h
index ab40b1b
在2024年5月21日五月 下午7:15，Tom Rini写道：
[...]
>
> We have long not done a great job with the U-Boot standalone API stuff,
> and for a number of years at this point a lot of the use cases it was
> used for could instead be filled by making an EFI application. There's a
> well defined API there, there's
followed after,
so R1 will be dropped here.
Signed-off-by: Jiaxun Yang
---
drivers/mmc/mmc_spi.c | 4
1 file changed, 4 deletions(-)
diff --git a/drivers/mmc/mmc_spi.c b/drivers/mmc/mmc_spi.c
index 46800bbed2..1da963ba1e 100644
--- a/drivers/mmc/mmc_spi.c
+++ b/drivers/mmc/mmc_spi.c
@@ -94,10
在 2021/1/24 下午7:38, Meng, Bin 写道:
It looks somehow this email did not arrive the mailing list?
Yes, it is waiting list moderator for approval as it's my first mail to
U-Boot list.
As for the patch, U-Boot mms_spi driver does nothing wrong. The dropped byte is
for Ncr as required by the sp
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