tree 042c4f9c557dc21cd33a2cb434f4cb617d214bea
parent a5300c4949b8d4de2d34bedfaed66793f48ec948
author Jason A. Donenfeld <Jason@zx2c4.com> 1663335363 +0100
committer Paolo Bonzini <pbonzini@redhat.com> 1663594550 +0200

Place setup_data at location specified by host

QEMU places setup_data at a particular location, which cannot be
relocated due to it containing self references in absolute address
terms. For this reason, it supplies the intended location in
FW_CFG_SETUP_ADDR.  That is what is used in the option ROMs provided
by QEMU, use this too in qboot.

This also has the effect of removing the 8k limit on the copied size,
since the header is copied to the right location from the beginning.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Message-Id: <20220916133603.693135-1-Jason@zx2c4.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>