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Ian Campbell
314c9815e2
The ramdisk is passed to the kernel as a property in the chosen node of the device tree. This is somewhat tricky since in order to place the ramdisk and dtb in ram we first need to know the size of the dtb. So we initially create a DTB with placeholders for the ramdisk and finalise the value (which doesn't change the size) once we know where everything is. Rename libxl__arch_domain_configure to xl__arch_domain_init_hw_description to better reflect its use and to be consistent with the new libxl__arch_domain_finalise_hw_description. The common xc_dom_build_image() function did not support explicit placement of the ramdisk, instead passing 0 to xc_dom_alloc_segment, meaning "pick somewhere". This change instead passes ramdisk_seg.vstart. If nothing has set vstart then it will be zero because the entire dom struct is zeroed on allocation in xc_dom_allocate(). Therefore there is no change to the behaviour on x86. This is also consistent with how other segments (kernel, dtb) are handled. Furthermore if the ramdisk has been explicitly placed then xc_dom_build_image() assumes that it is not to be decompressed (since that would muck up the sizings used on placement). With all that I'm able to boot a domain using the current Debian Jessie armhf installer initrd and have it complete successfully. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Julien Grall <julien.grall@linaro.org> [ ijc -- s/itherwise/otherwise and dropped bogus emacs magic change ]
31 lines
1.3 KiB
C
31 lines
1.3 KiB
C
/*
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* Copyright (C) 2012 Citrix Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; version 2.1 only. with the special
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* exception on linking described in file LICENSE.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*/
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#ifndef LIBXL_ARCH_H
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#define LIBXL_ARCH_H
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/* arch specific internal domain creation function */
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int libxl__arch_domain_create(libxl__gc *gc, libxl_domain_config *d_config,
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uint32_t domid);
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/* setup arch specific hardware description, i.e. DTB on ARM */
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int libxl__arch_domain_init_hw_description(libxl__gc *gc,
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libxl_domain_build_info *info,
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struct xc_dom_image *dom);
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/* finalize arch specific hardware description. */
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int libxl__arch_domain_finalise_hw_description(libxl__gc *gc,
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libxl_domain_build_info *info,
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struct xc_dom_image *dom);
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#endif
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