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Diffstat (limited to 'extras/mini-os/arch/ia64/ia64.S')
| -rw-r--r-- | extras/mini-os/arch/ia64/ia64.S | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/extras/mini-os/arch/ia64/ia64.S b/extras/mini-os/arch/ia64/ia64.S deleted file mode 100644 index 8fde08977d..0000000000 --- a/extras/mini-os/arch/ia64/ia64.S +++ /dev/null @@ -1,233 +0,0 @@ -/* - * Copyright (c) 2007 Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com> - * - ***************************************************************************** - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - - - -#include <mini-os/asm.h> -#include <mini-os/page.h> -#include <mini-os/ia64_cpu.h> -#include <mini-os/ia64_fpu.h> -#include <mini-os/privop.h> -#include <mini-os/offsets.h> - - - - /* - * Allocate kernel stack area. - * This is used for stack pointer (goes down from kstack+PAGE_SIZE) and - * RSE (goes up from kstack). - */ - .section .data.start,"aw" - .global kstack - .align PAGE_SIZE -kstack: .space KSTACK_PAGES * PAGE_SIZE - - .text - - /* - * Start the kernel. - * r28 points to the address of the boot parameter area, given - * from the bootloader. - * Execution reaches here in physical mode. - */ -ENTRY(_start) - .prologue - .save rp, r0 // terminate unwind chain with a NULL rp - .body - - alloc loc0=ar.pfs,0,1,1,0 - - rsm psr.i | psr.ic - ;; - srlz.i - ;; - - /* - * Initialize mini-os region registers: - * Currently only region registers 5 and 7 are used for addressing. - * rr[5] : virtual kernel address space - * rr[7] : directly mapped physically addresses. - */ - movl r2=0<<IA64_RR_IDX_POS - movl r3=1<<IA64_RR_IDX_POS - ;; - mov rr[r2]=r0 - mov rr[r3]=r0 - ;; - movl r2=2<<IA64_RR_IDX_POS - movl r3=3<<IA64_RR_IDX_POS - ;; - mov rr[r2]=r0 - mov rr[r3]=r0 - ;; - movl r2=4<<IA64_RR_IDX_POS - movl r3=6<<IA64_RR_IDX_POS - ;; - mov rr[r2]=r0 - mov rr[r3]=r0 - ;; - // Wired memory for kernel data and text. - movl r2=IA64_RR_VAL(KERNEL_TR_PAGE_SIZE,0) - movl r3=5<<IA64_RR_IDX_POS // region 5 - ;; - mov rr[r3]=r2 - ;; - /* - * Region 7 addresses are only for directly mapped physically - * addresses. - */ - movl r2=IA64_RR_VAL(PTE_PS_16K,0) - movl r3=7<<IA64_RR_IDX_POS // region 7 - ;; - mov rr[r3]=r2 - ;; - /* - * Setup protection keys for region 5 and 7. - */ - mov r2=(IA64_KEY_REG5 << IA64_PKR_KEY) | IA64_PKR_VALID - mov r3=(IA64_KEY_REG7 << IA64_PKR_KEY) | IA64_PKR_VALID - mov r14=0x1 - ;; - mov pkr[r0]=r2 /* Region 5 */ - mov pkr[r14]=r3 /* Region 7 */ - ;; - /* - * Now pin mappings into the TLB for kernel text and data - */ - mov r18=(KERNEL_TR_PAGE_SIZE<<IA64_ITIR_PS)| \ - (IA64_KEY_REG5<<IA64_ITIR_KEY) - movl r17=KERNEL_START - ;; - mov cr.itir=r18 - mov cr.ifa=r17 - mov r16=IA64_TR_KERNEL - mov r3=ip - movl r18=PTE_KERNEL_ATTR - ;; - dep r2=0,r3,0,KERNEL_TR_PAGE_SIZE - ;; - or r18=r2,r18 - ;; - srlz.i - ;; - itr.i itr[r16]=r18 - ;; - itr.d dtr[r16]=r18 - ;; - srlz.i - - /* Switch into virtual mode */ - movl r16=STARTUP_PSR - ;; - mov cr.ipsr=r16 - movl r17=1f - ;; - mov cr.iip=r17 - mov cr.ifs=r0 - ;; - rfi - ;; -1: /* now we are in virtual mode */ - - movl r3=ia64_trap_table - ;; - mov cr.iva=r3 - ;; - - movl r2=IA64_FPSR_DEFAULT - movl r3=IA64_DCR_DEFAULT - ;; - srlz.i - movl gp=__gp - - mov ar.fpsr=r2 - mov cr.dcr=r3 - ;; - movl r2=kstack - movl r5=KSTACK_PAGES * PAGE_SIZE - 16 - mov ar.rsc=0 // place RSE in enforced lazy mode - ;; - loadrs // clear the dirty partition - ;; - mov ar.bspstore=r2 // establish the new RSE stack - add sp=r2,r5 - ;; - mov ar.rsc=IA64_RSE_EAGER // place RSE in eager mode - - ;; - movl r2=ia64_boot_paramP - mov r3=7 // make address virtual region 7. - ;; - dep r28=r3,r28,61,3 - ;; - // save the address of the boot param area - // passed by the bootloader - st8 [r2]=r28 - ;; - - /* Set xsi base. I use here XSI_BASE. */ -#define FW_HYPERCALL_SET_SHARED_INFO_VA 0x600 - mov r2=FW_HYPERCALL_SET_SHARED_INFO_VA - movl r28=XSI_BASE - ;; - break 0x1000 - ;; - /* - * I set up here the pointer to the global start_info structure. - * This structure will be initialized in arch_init(). - */ - movl out0=start_info_union - // Prepare out0 - the pointer to start_info_t. - movl r14=XSI_BASE - ;; - add r15=START_INFO_PFN,r14 // add offset to XSI_BASE - ;; - START_INFO_PFN_ld r14=[r15] // load the start_info_pfn - add r16=7, r0 - ;; - shl r15=r14,PAGE_SHIFT_XEN_16K // pfn << PAGE_SHIFT_XEN_16K - shl r16=r16,IA64_RR_IDX_POS // (7<<IA64_RR_IDX_POS) - ;; - or out0=r16, r15 // make a region 7 address - ;; - ssm psr.i | psr.ic - ;; - srlz.i - ;; - br.call.sptk.many rp=start_kernel - ;; - add r2=3,r0 - ;; - ld8 r3=[r2] - ;; - -self: hint @pause - br.sptk.many self // endless loop -END(_start) - - -ENTRY(do_nop) - nop 0x01 - add r15=1,r15 - br.ret.sptk.many rp -END(do_nop) |