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Signed-off-by: Vikram Garhwal --- tools/include/xenctrl.h | 5 +++++ tools/libs/ctrl/Makefile | 1 + tools/libs/ctrl/xc_overlay.c | 51 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 57 insertions(+) create mode 100644 tools/libs/ctrl/xc_overlay.c diff --git a/tools/include/xenctrl.h b/tools/include/xenctrl.h index 07b96e6..cfd7c5c 100644 --- a/tools/include/xenctrl.h +++ b/tools/include/xenctrl.h @@ -2684,6 +2684,11 @@ int xc_livepatch_replace(xc_interface *xch, char *name, uint32_t timeout, uint32 int xc_domain_cacheflush(xc_interface *xch, uint32_t domid, xen_pfn_t start_pfn, xen_pfn_t nr_pfns); +#if defined (CONFIG_OVERLAY_DTB) +int xc_dt_overlay(xc_interface *xch, void *overlay_fdt, int overlay_fdt_size, + uint8_t overlayop); +#endif + /* Compat shims */ #include "xenctrl_compat.h" diff --git a/tools/libs/ctrl/Makefile b/tools/libs/ctrl/Makefile index 519246b..a21a949 100644 --- a/tools/libs/ctrl/Makefile +++ b/tools/libs/ctrl/Makefile @@ -3,6 +3,7 @@ include $(XEN_ROOT)/tools/Rules.mk SRCS-y += xc_altp2m.c SRCS-y += xc_cpupool.c +SRCS-$(CONFIG_OVERLAY_DTB) += xc_overlay.c SRCS-y += xc_domain.c SRCS-y += xc_evtchn.c SRCS-y += xc_gnttab.c diff --git a/tools/libs/ctrl/xc_overlay.c b/tools/libs/ctrl/xc_overlay.c new file mode 100644 index 0000000..77f9edc --- /dev/null +++ b/tools/libs/ctrl/xc_overlay.c @@ -0,0 +1,51 @@ +/* + * + * Overlay control functions. + * Copyright (C) 2021 Xilinx Inc. + * Author Vikram Garhwal + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; If not, see . + */ + +#include "xc_bitops.h" +#include "xc_private.h" +#include +#include + +int xc_dt_overlay(xc_interface *xch, void *overlay_fdt, int overlay_fdt_size, + uint8_t op) +{ + int err; + DECLARE_SYSCTL; + + DECLARE_HYPERCALL_BOUNCE(overlay_fdt, overlay_fdt_size, + XC_HYPERCALL_BUFFER_BOUNCE_IN); + + if ( (err = xc_hypercall_bounce_pre(xch, overlay_fdt)) ) + goto err; + + sysctl.cmd = XEN_SYSCTL_overlay; + sysctl.u.overlay_dt.overlay_op= op; + sysctl.u.overlay_dt.overlay_fdt_size = overlay_fdt_size; + + set_xen_guest_handle(sysctl.u.overlay_dt.overlay_fdt, overlay_fdt); + + if ( (err = do_sysctl(xch, &sysctl)) != 0 ) + PERROR("%s failed\n", __func__); + +err: + xc_hypercall_bounce_post(xch, overlay_fdt); + + return err; +} -- 2.7.4