arch/x86/boot.c: Pass arguments when running programs
Payloads can use coreboot tables passed on via arguments instead of via a pointer in lower memory. Stages can make use of the argument to pass on information. Change-Id: Ie0f44e9e1992221e02c49d0492cdd2a3d9013560 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36143 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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@ -30,13 +30,12 @@ int payload_arch_usable_ram_quirk(uint64_t start, uint64_t size)
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void arch_prog_run(struct prog *prog)
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{
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__asm__ volatile (
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#ifdef __x86_64__
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"jmp *%%rdi\n"
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void (*doit)(void *arg);
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#else
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"jmp *%%edi\n"
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/* Ensure the argument is pushed on the stack. */
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asmlinkage void (*doit)(void *arg);
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#endif
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:: "D"(prog_entry(prog))
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);
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doit = prog_entry(prog);
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doit(prog_entry_arg(prog));
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}
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