git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 080104cd IY |
1 | /* |
| 2 | * Support routines for Xen | |
| 3 | * | |
| 4 | * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com> | |
| 5 | */ | |
| 6 | ||
| 7 | #include <asm/processor.h> | |
| 8 | #include <asm/asmmacro.h> | |
| 9 | #include <asm/pgtable.h> | |
| 10 | #include <asm/system.h> | |
| 11 | #include <asm/paravirt.h> | |
| 12 | #include <asm/xen/privop.h> | |
| 13 | #include <linux/elfnote.h> | |
| 14 | #include <linux/init.h> | |
| 15 | #include <xen/interface/elfnote.h> | |
| 16 | ||
| 54cb27a7 | 17 | .section .data..read_mostly |
| 080104cd IY |
18 | .align 8 |
| 19 | .global xen_domain_type | |
| 20 | xen_domain_type: | |
| 21 | data4 XEN_NATIVE_ASM | |
| 22 | .previous | |
| 23 | ||
| 24 | __INIT | |
| 25 | ENTRY(startup_xen) | |
| 26 | // Calculate load offset. | |
| 27 | // The constant, LOAD_OFFSET, can't be used because the boot | |
| 28 | // loader doesn't always load to the LMA specified by the vmlinux.lds. | |
| 29 | mov r9=ip // must be the first instruction to make sure | |
| 30 | // that r9 = the physical address of startup_xen. | |
| 31 | // Usually r9 = startup_xen - LOAD_OFFSET | |
| 32 | movl r8=startup_xen | |
| 33 | ;; | |
| 34 | sub r9=r9,r8 // Usually r9 = -LOAD_OFFSET. | |
| 35 | ||
| 36 | mov r10=PARAVIRT_HYPERVISOR_TYPE_XEN | |
| 37 | movl r11=_start | |
| 38 | ;; | |
| 39 | add r11=r11,r9 | |
| 40 | movl r8=hypervisor_type | |
| 41 | ;; | |
| 42 | add r8=r8,r9 | |
| 43 | mov b0=r11 | |
| 44 | ;; | |
| 45 | st8 [r8]=r10 | |
| 46 | br.cond.sptk.many b0 | |
| 47 | ;; | |
| 48 | END(startup_xen) | |
| 49 | ||
| 50 | ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz "linux") | |
| 51 | ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz "2.6") | |
| 52 | ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz "xen-3.0") | |
| 53 | ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, data8.ua startup_xen - LOAD_OFFSET) | |
| 54 | ||
| 55 | #define isBP p3 // are we the Bootstrap Processor? | |
| 56 | ||
| 080104cd IY |
57 | GLOBAL_ENTRY(xen_setup_hook) |
| 58 | mov r8=XEN_PV_DOMAIN_ASM | |
| 59 | (isBP) movl r9=xen_domain_type;; | |
| 60 | (isBP) st4 [r9]=r8 | |
| 61 | movl r10=xen_ivt;; | |
| 62 | ||
| 63 | mov cr.iva=r10 | |
| 64 | ||
| 65 | /* Set xsi base. */ | |
| 66 | #define FW_HYPERCALL_SET_SHARED_INFO_VA 0x600 | |
| 67 | (isBP) mov r2=FW_HYPERCALL_SET_SHARED_INFO_VA | |
| 68 | (isBP) movl r28=XSI_BASE;; | |
| 69 | (isBP) break 0x1000;; | |
| 70 | ||
| 71 | /* setup pv_ops */ | |
| 72 | (isBP) mov r4=rp | |
| 73 | ;; | |
| 74 | (isBP) br.call.sptk.many rp=xen_setup_pv_ops | |
| 75 | ;; | |
| 76 | (isBP) mov rp=r4 | |
| 77 | ;; | |
| 78 | ||
| 79 | br.ret.sptk.many rp | |
| 80 | ;; | |
| 81 | END(xen_setup_hook) |