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README.md

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OS23_group1

This work is licensed under a Creative Commons Attribution-Noncommercial 4.0 International License

SOLUTION

Firstly, the device is described in the source file custom_rom.c, while in the header file custom_rom.h there is the declaration of the cration function. In addition, you may add the following changes to the files already present in qemu directory to correctly configure your device:

  • hw/misc/Config:
+ config CUSTOM_ROM
+    bool
  • hw/misc/meson.build
+ softmmu_ss.add(when: 'CONFIG_CUSTOM_ROM', if_true: files('custom_rom.c'))
  • hw/riscv/Kconfig:
config RISCV_VIRT
    ...
+  select CUSTOM_ROM
  • hw/riscv/virt.c:
+  #include "hw/misc/banana_rom.h"

static const MemMapEntry virt_memmap[] = {
    ...
+  [VIRT_CUSTOM_ROM] =  {  0x4000000,       0x100 },
    ...
    }

+ custom_rom_create(memmap[VIRT_CUSTOM_ROM].base);
  • include/hw/riscv/virt.h:
enum {
    VIRT_DEBUG,
+   VIRT_CUSTOM_ROM,
      ...
}