This changes the virt target so that it can be run with the -bios option
and a pflash backend for the flash. QEMU can now be run as follows:
qemu -M virt -m 1G -nographic -bios build/coreboot.rom \
        -drive if=pflash,file=./build/coreboot.rom,format=raw
coreboot will start in DRAM, but still have a flash to put CBFS onto and
to load subsequent stages and payload from.
Tested bootflow:
coreboot -> OpenSBI -> Linux -> u-root
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I009d97fa3e13068b91c604e987e50a65e525407d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80746
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: ron minnich <rminnich@gmail.com>
Reviewed-by: Philipp Hug <philipp@hug.cx>
		
	
		
			
				
	
	
		
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			Markdown
		
	
	
	
	
	
			
		
		
	
	
			12 lines
		
	
	
		
			278 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| # QEMU RISC-V emulator
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| 
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| ## Building coreboot and running it in QEMU
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| 
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| - Configure coreboot and run `make` as usual
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| 
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| Run QEMU
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| ```
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| qemu-system-riscv64 -M virt -m 1G -nographic -bios build/coreboot.rom \
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|                     -drive if=pflash,file=./build/coreboot.rom,format=raw
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| ```
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