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run: Use -m 512 for hw_x86_64 on qemu

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The base-hw kernel on x86_64 currently assumes 254 MiB of RAM. The RAM
region is subtracted from the I/O mem allocator and therefore this range
is not available for device I/O.

If qemu is started with -m 128, the region for (emulated) PCI config
space access lies within this region and I/O mem allocation in the
pci_drv will fail. Giving qemu more RAM moves the PCI config space out
of the 254 MiB region, making the run/libc_ffat scenario with acpi work.
This commit is contained in:
Reto Buerki 2015-05-13 10:39:30 +02:00 committed by Christian Helmuth
parent 58178949ef
commit f02c92598b
1 changed files with 4 additions and 0 deletions
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4
tool/run/power_on/qemu
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@ -51,6 +51,10 @@ proc run_power_on { } {
}
if {[have_spec platform_vpb926]} { append qemu_args " -M versatilepb -m 128 " }
if {[have_spec platform_vea9x4]} { append qemu_args " -M vexpress-a9 -cpu cortex-a9 -m 256 " }
if {[have_spec hw_x86_64]} {
regsub -all {\-m ([0-9])+} $qemu_args "" qemu_args
append qemu_args " -m 512 "
}
# on x86, we support booting via pxe or iso/disk image
if {[have_spec x86]} {