From 99648958668d3a33ee57974479b36201fe303f34 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Fri, 20 Apr 2018 10:35:35 +0200 Subject: bsps: Move startup files to bsps Adjust build support files to new directory layout. This patch is a part of the BSP source reorganization. Update #3285. --- c/src/lib/libbsp/mips/shared/startup/idttlb.S | 388 -------------------------- 1 file changed, 388 deletions(-) delete mode 100644 c/src/lib/libbsp/mips/shared/startup/idttlb.S (limited to 'c/src/lib/libbsp/mips/shared/startup/idttlb.S') diff --git a/c/src/lib/libbsp/mips/shared/startup/idttlb.S b/c/src/lib/libbsp/mips/shared/startup/idttlb.S deleted file mode 100644 index 2574027dc9..0000000000 --- a/c/src/lib/libbsp/mips/shared/startup/idttlb.S +++ /dev/null @@ -1,388 +0,0 @@ -/* - -Based upon IDT provided code with the following release: - -This source code has been made available to you by IDT on an AS-IS -basis. Anyone receiving this source is licensed under IDT copyrights -to use it in any way he or she deems fit, including copying it, -modifying it, compiling it, and redistributing it either with or -without modifications. No license under IDT patents or patent -applications is to be implied by the copyright license. - -Any user of this software should understand that IDT cannot provide -technical support for this software and will not be responsible for -any consequences resulting from the use of this software. - -Any person who transfers this source code or any derivative work must -include the IDT copyright notice, this paragraph, and the preceeding -two paragraphs in the transferred software. - -COPYRIGHT IDT CORPORATION 1996 -LICENSED MATERIAL - PROGRAM PROPERTY OF IDT -*/ - - -/* -** idttlb.s - fetch the registers associated with and the contents -** of the tlb. -** -*/ -/* 950308: Ketan patched a few tlb functions that would not have worked.*/ -#include -#include -#include - - - .text - -#if __mips == 1 -/* -** ret_tlblo -- returns the 'entrylo' contents for the TLB -** 'c' callable - as ret_tlblo(index) - where index is the -** tlb entry to return the lo value for - if called from assembly -** language then index should be in register a0. -*/ -FRAME(ret_tlblo,sp,0,ra) - .set noreorder - mfc0 t0,C0_SR # save sr - nop - and t0,~SR_PE # dont inadvertantly clear PE - mtc0 zero,C0_SR # clear interrupts - mfc0 t1,C0_TLBHI # save pid - sll a0,TLBINX_INXSHIFT # position index - mtc0 a0,C0_INX # write to index register - nop - tlbr # put tlb entry in entrylo and hi - nop - mfc0 v0,C0_TLBLO # get the requested entry lo - mtc0 t1,C0_TLBHI # restore pid - mtc0 t0,C0_SR # restore status register - j ra - nop - .set reorder -ENDFRAME(ret_tlblo) -#endif -#if __mips == 3 -/* -** ret_tlblo[01] -- returns the 'entrylo' contents for the TLB -** 'c' callable - as ret_tlblo(index) - where index is the -** tlb entry to return the lo value for - if called from assembly -** language then index should be in register a0. -*/ -FRAME(ret_tlblo0,sp,0,ra) - mfc0 t0,C0_SR # save sr - mtc0 zero,C0_SR # clear interrupts - mfc0 t1,C0_TLBHI # save pid - mtc0 a0,C0_INX # write to index register - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - tlbr # put tlb entry in entrylo and hi - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - mfc0 v0,C0_TLBLO0 # get the requested entry lo - mtc0 t1,C0_TLBHI # restore pid - mtc0 t0,C0_SR # restore status register - j ra -ENDFRAME(ret_tlblo0) - -FRAME(ret_tlblo1,sp,0,ra) - mfc0 t0,C0_SR # save sr - mtc0 zero,C0_SR # clear interrupts - mfc0 t1,C0_TLBHI # save pid - mtc0 a0,C0_INX # write to index register - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - tlbr # put tlb entry in entrylo and hi - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - mfc0 v0,C0_TLBLO1 # get the requested entry lo - mtc0 t1,C0_TLBHI # restore pid - mtc0 t0,C0_SR # restore status register - j ra -ENDFRAME(ret_tlblo1) - -/* -** ret_pagemask(index) -- return pagemask contents of tlb entry "index" -*/ -FRAME(ret_pagemask,sp,0,ra) - mfc0 t0,C0_SR # save sr - mtc0 zero,C0_SR # disable interrupts - mfc0 t1,C0_TLBHI # save current pid - mtc0 a0,C0_INX # drop it in C0 register - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - tlbr # read entry to entry hi/lo - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - mfc0 v0,C0_PAGEMASK # to return value - mtc0 t1,C0_TLBHI # restore current pid - mtc0 t0,C0_SR # restore sr - j ra -ENDFRAME(ret_pagemask) - -/* -** ret_tlbwired(void) -- return wired register -*/ -FRAME(ret_tlbwired,sp,0,ra) - mfc0 v0,C0_WIRED - j ra -ENDFRAME(ret_tlbwired) -#endif - -/* -** ret_tlbhi -- return the tlb entry high content for tlb entry -** index -*/ -FRAME(ret_tlbhi,sp,0,ra) -#if __mips == 1 - .set noreorder - mfc0 t0,C0_SR # save sr - nop - and t0,~SR_PE - mtc0 zero,C0_SR # disable interrupts - mfc0 t1,C0_TLBHI # save current pid - sll a0,TLBINX_INXSHIFT # position index - mtc0 a0,C0_INX # drop it in C0 register - nop - tlbr # read entry to entry hi/lo - nop - mfc0 v0,C0_TLBHI # to return value - mtc0 t1,C0_TLBHI # restore current pid - mtc0 t0,C0_SR # restore sr - j ra - nop - .set reorder -#endif -#if __mips == 3 - mfc0 t0,C0_SR # save sr - mtc0 zero,C0_SR # disable interrupts - mfc0 t1,C0_TLBHI # save current pid - mtc0 a0,C0_INX # drop it in C0 register - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - tlbr # read entry to entry hi/lo0/lo1/mask - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - mfc0 v0,C0_TLBHI # to return value - mtc0 t1,C0_TLBHI # restore current pid - mtc0 t0,C0_SR # restore sr - j ra -#endif -ENDFRAME(ret_tlbhi) - -/* -** ret_tlbpid() -- return tlb pid contained in the current entry hi -*/ -FRAME(ret_tlbpid,sp,0,ra) -#if __mips == 1 - .set noreorder - mfc0 v0,C0_TLBHI # fetch tlb high - nop - and v0,TLBHI_PIDMASK # isolate and position - srl v0,TLBHI_PIDSHIFT - j ra - nop - .set reorder -#endif -#if __mips == 3 - mfc0 v0,C0_TLBHI # to return value - nop - and v0,TLBHI_PIDMASK - j ra -#endif -ENDFRAME(ret_tlbpid) - -/* -** tlbprobe(address, pid) -- probe the tlb to see if address is currently -** mapped -** a0 = vpn - virtual page numbers are 0=0 1=0x1000, 2=0x2000... -** virtual page numbers for the r3000 are in -** entry hi bits 31-12 -** a1 = pid - this is a process id ranging from 0 to 63 -** this process id is shifted left 6 bits and or'ed into -** the entry hi register -** returns an index value (0-63) if successful -1 -f not -*/ -FRAME(tlbprobe,sp,0,ra) -#if __mips == 1 - .set noreorder - mfc0 t0,C0_SR /* fetch status reg */ - and a0,TLBHI_VPNMASK /* isolate just the vpn */ - and t0,~SR_PE /* don't inadvertantly clear pe */ - mtc0 zero,C0_SR - mfc0 t1,C0_TLBHI - sll a1,TLBHI_PIDSHIFT /* possition the pid */ - and a1,TLBHI_PIDMASK - or a0,a1 /* build entry hi value */ - mtc0 a0,C0_TLBHI - nop - tlbp /* do the probe */ - nop - mfc0 v1,C0_INX - li v0,-1 - bltz v1,1f - nop - sra v0,v1,TLBINX_INXSHIFT /* get index positioned for return */ -1: - mtc0 t1,C0_TLBHI /* restore tlb hi */ - mtc0 t0,C0_SR /* restore the status reg */ - j ra - nop - .set reorder -#endif -#if __mips == 3 - mfc0 t0,C0_SR # save sr - mtc0 zero,C0_SR # disable interrupts - mfc0 t1,C0_TLBHI # save current pid - and a0,TLBHI_VPN2MASK # construct tlbhi for probe - and a1,TLBHI_PIDMASK - or a0,a1 - mtc0 a0,C0_TLBHI - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - tlbp # probe entry to entry hi/lo0/lo1/mask - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - mfc0 v1,C0_INX - li v0,-1 - bltz v1,1f - move v0,v1 -1: mtc0 t1,C0_TLBHI # restore current pid - mtc0 t0,C0_SR # restore sr - j ra -#endif -ENDFRAME(tlbprobe) - -/* -** resettlb(index) Invalidate the TLB entry specified by index -*/ -FRAME(resettlb,sp,0,ra) -#if __mips == 1 - .set noreorder - mfc0 t0,C0_TLBHI # fetch the current hi - mfc0 v0,C0_SR # fetch the status reg. - li t2,K0BASE&TLBHI_VPNMASK - and v0,~SR_PE # dont inadvertantly clear PE - mtc0 zero,C0_SR - mtc0 t2,C0_TLBHI # set up tlbhi - mtc0 zero,C0_TLBLO - sll a0,TLBINX_INXSHIFT - mtc0 a0,C0_INX - nop - tlbwi # do actual invalidate - nop - mtc0 t0,C0_TLBHI - mtc0 v0,C0_SR - j ra - nop - .set reorder -#endif -#if __mips == 3 - li t2,K0BASE&TLBHI_VPN2MASK - mfc0 t0,C0_TLBHI # save current TLBHI - mfc0 v0,C0_SR # save SR and disable interrupts - mtc0 zero,C0_SR - mtc0 t2,C0_TLBHI # invalidate entry - mtc0 zero,C0_TLBLO0 - mtc0 zero,C0_TLBLO1 - mtc0 a0,C0_INX - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - tlbwi - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - mtc0 t0,C0_TLBHI - mtc0 v0,C0_SR - j ra -#endif -ENDFRAME(resettlb) - -#if __mips == 1 -/* -** Setup TLB entry -** -** map_tlb(index, tlbhi, phypage) -** a0 = TLB entry index -** a1 = virtual page number and PID -** a2 = physical page -*/ -FRAME(map_tlb,sp,0,ra) - .set noreorder - sll a0,TLBINX_INXSHIFT - mfc0 v0,C0_SR # fetch the current status - mfc0 a3,C0_TLBHI # save the current hi - and v0,~SR_PE # dont inadvertantly clear parity - - mtc0 zero,C0_SR - mtc0 a1,C0_TLBHI # set the hi entry - mtc0 a2,C0_TLBLO # set the lo entry - mtc0 a0,C0_INX # load the index - nop - tlbwi # put the hi/lo in tlb entry indexed - nop - mtc0 a3,C0_TLBHI # put back the tlb hi reg - mtc0 v0,C0_SR # restore the status register - j ra - nop - .set reorder -ENDFRAME(map_tlb) -#endif -#if __mips == 3 -/* -** Setup R4000 TLB entry -** -** map_tlb4000(mask_index, tlbhi, pte_even, pte_odd) -** a0 = TLB entry index and page mask -** a1 = virtual page number and PID -** a2 = pte -- contents of even pte -** a3 = pte -- contents of odd pte -*/ -FRAME(map_tlb4000,sp,0,ra) - and t2,a0,TLBPGMASK_MASK - and a0,TLBINX_INXMASK - mfc0 t1,C0_TLBHI # save current TLBPID - mfc0 v0,C0_SR # save SR and disable interrupts - mtc0 zero,C0_SR - mtc0 t2,C0_PAGEMASK # set - mtc0 a1,C0_TLBHI # set VPN and TLBPID - mtc0 a2,C0_TLBLO0 # set PPN and access bits - mtc0 a3,C0_TLBLO1 # set PPN and access bits - mtc0 a0,C0_INX # set INDEX to wired entry - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - tlbwi # drop it in - .set noreorder - nop; nop; nop; nop; nop; nop; nop; nop - .set reorder - mtc0 t1,C0_TLBHI # restore TLBPID - mtc0 v0,C0_SR # restore SR - j ra -ENDFRAME(map_tlb4000) -#endif - - -/* -** Set current TLBPID. This assumes PID is positioned correctly in reg. -** a0. -*/ -FRAME(set_tlbpid,sp,0,ra) - .set noreorder - mtc0 a0,C0_TLBHI - j ra - nop - .set reorder -ENDFRAME(set_tlbpid) - -- cgit v1.2.3