[v7,00/17] Add boot LoongArch elf kernel with FDT

Message

gaosong April 26, 2024, 9:15 a.m. UTC

Hi, All

We already support boot efi kernel with bios, but not support boot elf kernel.
This series adds boot elf kernel with FDT.

'LoongArch supports ACPI and FDT. The information that needs to be passed
 to the kernel includes the memmap, the initrd, the command line, optionally
 the ACPI/FDT tables, and so on'  see [1].

Patch 2-8 : Create efi system table, and three efi configuration table
            boot_memmap, initd, FDT.
Patch 9-17 : Fixes FDT problems.

Test:
  - Start kernel
    See [2] start_kernel.sh
  - Start qcow2
    See [2] start_qcow2.sh

Patch 3 and Patch 6 need to be reviewed.

Thanks.
Song Gao

V7:
  - Rebase and R-b;
  - Patch3, replace reg_num with reg_name.
    move slave boot code buf to pflash0;
  - Patch5: replace __aligned(8) with QEMU_ALIGNED(8);
  - Patch8: Use the macro FDT_BASE to indicate the fdt base size.

V6:
  - Fixes test/compilation failures; 

V5:
  - Rebase;

V4:
  - patch 3 change slave_boot_code[] to const, and 'static void *p ' to
    'void *p';
  - patch 4 fixes build error;
  - patch 10-13, add project and commit link.

V3:
  - Load initrd at  kernel_high + 4 * kernel_size;
  - Load 'boot_rom' at [0 - 1M], the 'boot_rom' includes
    slave_boot_code, cmdline_buf and systab_tables;
  - R-b and rebase.

V2:
  - FDT pcie node adds cells 'msi-map';


[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/arch/loongarch/booting.rst?h=v6.7-rc4

[2]: https://github.com/gaosong-loongson/loongarch-binary/releases

Song Gao (17):
  hw/loongarch: Move boot functions to boot.c
  hw/loongarch: Add load initrd
  hw/loongarch: Add slave cpu boot_code
  hw/loongarch: Add init_cmdline
  hw/loongarch: Init efi_system_table
  hw/loongarch: Init efi_boot_memmap table
  hw/loongarch: Init efi_initrd table
  hw/loongarch: Init efi_fdt table
  hw/loongarch: Fix fdt memory node wrong 'reg'
  hw/loongarch: fdt adds cpu interrupt controller node
  hw/loongarch: fdt adds Extend I/O Interrupt Controller
  hw/loongarch: fdt adds pch_pic Controller
  hw/loongarch: fdt adds pch_msi Controller
  hw/loongarch: fdt adds pcie irq_map node
  hw/loongarch: fdt remove unused irqchip node
  hw/loongarch: Add cells missing from uart node
  hw/loongarch: Add cells missing from rtc node

 include/hw/intc/loongarch_extioi.h |   1 +
 include/hw/loongarch/boot.h        | 109 +++++++++
 include/hw/loongarch/virt.h        |  14 ++
 include/hw/pci-host/ls7a.h         |   2 +
 target/loongarch/cpu.h             |   2 +
 hw/loongarch/boot.c                | 337 ++++++++++++++++++++++++++
 hw/loongarch/virt.c                | 363 ++++++++++++++++-------------
 hw/loongarch/meson.build           |   1 +
 8 files changed, 669 insertions(+), 160 deletions(-)
 create mode 100644 include/hw/loongarch/boot.h
 create mode 100644 hw/loongarch/boot.c