33724f17d2
- Remove explicit requirement that the SOC registers be found except as an optimization (although the MPC85XX LAW drivers still require they be found externally, which should change). - Remove magic CCSRBAR_VA value. - Allow bus_machdep.c's early-boot code to handle non 1:1 mappings and systems not in real-mode or global 1:1 maps in early boot. - Allow pmap_mapdev() on Book-E to reissue previous addresses if the area is already mapped. Additionally have it check all mappings, not just the CCSR area. This allows the console on e500 systems to actually work on systems where the boot loader was not kind enough to set up a 1:1 mapping before starting the kernel.
157 lines
4.0 KiB
C
157 lines
4.0 KiB
C
/*-
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* Copyright (c) 2011-2012 Semihalf.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/reboot.h>
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#include <machine/machdep.h>
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#include <dev/fdt/fdt_common.h>
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#include <powerpc/mpc85xx/mpc85xx.h>
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extern void dcache_enable(void);
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extern void dcache_inval(void);
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extern void icache_enable(void);
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extern void icache_inval(void);
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extern void l2cache_enable(void);
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extern void l2cache_inval(void);
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void
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booke_init_tlb(vm_paddr_t fdt_immr_pa)
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{
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}
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void
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booke_enable_l1_cache(void)
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{
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uint32_t csr;
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/* Enable D-cache if applicable */
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csr = mfspr(SPR_L1CSR0);
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if ((csr & L1CSR0_DCE) == 0) {
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dcache_inval();
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dcache_enable();
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}
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csr = mfspr(SPR_L1CSR0);
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if ((boothowto & RB_VERBOSE) != 0 || (csr & L1CSR0_DCE) == 0)
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printf("L1 D-cache %sabled\n",
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(csr & L1CSR0_DCE) ? "en" : "dis");
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/* Enable L1 I-cache if applicable. */
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csr = mfspr(SPR_L1CSR1);
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if ((csr & L1CSR1_ICE) == 0) {
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icache_inval();
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icache_enable();
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}
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csr = mfspr(SPR_L1CSR1);
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if ((boothowto & RB_VERBOSE) != 0 || (csr & L1CSR1_ICE) == 0)
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printf("L1 I-cache %sabled\n",
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(csr & L1CSR1_ICE) ? "en" : "dis");
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}
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#if 0
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void
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booke_enable_l2_cache(void)
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{
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uint32_t csr;
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/* Enable L2 cache on E500mc */
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if ((((mfpvr() >> 16) & 0xFFFF) == FSL_E500mc) ||
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(((mfpvr() >> 16) & 0xFFFF) == FSL_E5500)) {
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csr = mfspr(SPR_L2CSR0);
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if ((csr & L2CSR0_L2E) == 0) {
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l2cache_inval();
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l2cache_enable();
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}
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csr = mfspr(SPR_L2CSR0);
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if ((boothowto & RB_VERBOSE) != 0 || (csr & L2CSR0_L2E) == 0)
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printf("L2 cache %sabled\n",
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(csr & L2CSR0_L2E) ? "en" : "dis");
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}
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}
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void
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booke_enable_l3_cache(void)
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{
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uint32_t csr, size, ver;
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/* Enable L3 CoreNet Platform Cache (CPC) */
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ver = SVR_VER(mfspr(SPR_SVR));
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if (ver == SVR_P2041 || ver == SVR_P2041E || ver == SVR_P3041 ||
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ver == SVR_P3041E || ver == SVR_P5020 || ver == SVR_P5020E) {
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csr = ccsr_read4(OCP85XX_CPC_CSR0);
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if ((csr & OCP85XX_CPC_CSR0_CE) == 0) {
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l3cache_inval();
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l3cache_enable();
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}
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csr = ccsr_read4(OCP85XX_CPC_CSR0);
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if ((boothowto & RB_VERBOSE) != 0 ||
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(csr & OCP85XX_CPC_CSR0_CE) == 0) {
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size = OCP85XX_CPC_CFG0_SZ_K(ccsr_read4(OCP85XX_CPC_CFG0));
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printf("L3 Corenet Platform Cache: %d KB %sabled\n",
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size, (csr & OCP85XX_CPC_CSR0_CE) == 0 ?
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"dis" : "en");
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}
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}
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}
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void
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booke_disable_l2_cache(void)
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{
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}
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static void
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l3cache_inval(void)
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{
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/* Flash invalidate the CPC and clear all the locks */
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ccsr_write4(OCP85XX_CPC_CSR0, OCP85XX_CPC_CSR0_FI |
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OCP85XX_CPC_CSR0_LFC);
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while (ccsr_read4(OCP85XX_CPC_CSR0) & (OCP85XX_CPC_CSR0_FI |
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OCP85XX_CPC_CSR0_LFC))
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;
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}
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static void
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l3cache_enable(void)
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{
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ccsr_write4(OCP85XX_CPC_CSR0, OCP85XX_CPC_CSR0_CE |
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OCP85XX_CPC_CSR0_PE);
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/* Read back to sync write */
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ccsr_read4(OCP85XX_CPC_CSR0);
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}
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#endif
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