X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/4d15aeb193b2c68f1d38666c317f8d3734f5f083..5ba3f43ea354af8ad55bea84372a2bc834d8757c:/osfmk/arm/lowmem_vectors.c

diff --git a/osfmk/arm/lowmem_vectors.c b/osfmk/arm/lowmem_vectors.c
new file mode 100644
index 000000000..f710eb65f
--- /dev/null
+++ b/osfmk/arm/lowmem_vectors.c
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2012-2013 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+#include <mach_kdp.h>
+#include <mach/vm_param.h>
+#include <arm/lowglobals.h>
+#include <vm/vm_object.h>
+#include <vm/vm_page.h>
+
+extern vm_offset_t vm_kernel_stext;
+extern void	*version;
+extern void	*kmod;
+extern void	*kdp_trans_off;
+extern void	*osversion;
+extern void	*flag_kdp_trigger_reboot;
+extern void	*manual_pkt;
+extern struct vm_object pmap_object_store;	/* store pt pages */
+
+lowglo lowGlo __attribute__ ((aligned(PAGE_MAX_SIZE))) = {
+	.lgVerCode = { 'O','c','t','o','p','u','s',' ' },
+	// Increment the major version for changes that break the current Astris
+	// usage of lowGlo values
+	// Increment the minor version for changes that provide additonal info/function
+	// but does not break current usage
+	.lgLayoutMajorVersion = 3,
+	.lgLayoutMinorVersion = 0,
+	.lgLayoutMagic = LOWGLO_LAYOUT_MAGIC,
+	.lgVersion = (uint32_t)&version,
+	.lgKmodptr = (uint32_t)&kmod,
+	.lgPageShift = PAGE_SHIFT,
+#if MACH_KDP
+	.lgTransOff = (uint32_t)&kdp_trans_off,
+#endif
+	.lgOSVersion = (uint32_t)&osversion,
+#if MACH_KDP && CONFIG_KDP_INTERACTIVE_DEBUGGING
+	.lgRebootFlag	= (uint32_t)&flag_kdp_trigger_reboot,
+	.lgManualPktAddr = (uint32_t)&manual_pkt,
+#endif
+	.lgPmapMemQ = (uint32_t)&(pmap_object_store.memq),
+	.lgPmapMemPageOffset = offsetof(struct vm_page_with_ppnum, phys_page),
+	.lgPmapMemChainOffset = offsetof(struct vm_page, listq),
+	.lgPmapMemPagesize = (uint32_t)sizeof(struct vm_page),
+
+	.lgPmapMemStartAddr = -1,
+	.lgPmapMemEndAddr = -1,
+	.lgPmapMemFirstppnum = -1
+};
+
+void patch_low_glo(void)
+{
+	lowGlo.lgStext = (uint32_t)vm_kernel_stext;
+}
+
+void patch_low_glo_static_region(uint32_t address, uint32_t size)
+{
+	lowGlo.lgStaticAddr = address;
+	lowGlo.lgStaticSize = size;
+}
+
+
+void patch_low_glo_vm_page_info(void * start_addr, void * end_addr, uint32_t first_ppnum)
+{
+	lowGlo.lgPmapMemStartAddr = (uint32_t)start_addr;
+	lowGlo.lgPmapMemEndAddr = (uint32_t)end_addr;
+	lowGlo.lgPmapMemFirstppnum = first_ppnum;
+}