/* $NetBSD: machdep.c,v 1.8 2024/10/19 12:34:10 jmcneill Exp $ */ /* * Copyright (c) 2002, 2024 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (lennart@augustsson.net) at Sandburst Corp. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #define _POWERPC_BUS_DMA_PRIVATE #include __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.8 2024/10/19 12:34:10 jmcneill Exp $"); #include "opt_compat_netbsd.h" #include "opt_ddb.h" #include "opt_ddbparam.h" #include "opt_inet.h" #include "opt_ns.h" #include "opt_oea.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ksyms.h" #include "ukbd.h" #ifndef WII_DEFAULT_CMDLINE #define WII_DEFAULT_CMDLINE "root=ld0a" #endif #define IBM750CL_SPR_HID4 1011 #define L2_CCFI 0x00100000 /* L2 complete castout prior * to L2 flash invalidate. */ #define MINI_MEM2_START 0x13f00000 /* Start of reserved MEM2 for MINI */ extern u_int l2cr_config; struct powerpc_bus_space wii_mem_tag = { .pbs_flags = _BUS_SPACE_BIG_ENDIAN | _BUS_SPACE_MEM_TYPE, .pbs_offset = 0, .pbs_base = 0x0c000000, .pbs_limit = 0x0dffffff, .pbs_extent = NULL, }; static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(EXTMAP_RANGES)] __attribute__((aligned(8))); static bus_addr_t wii_dma_phys_to_bus_mem(bus_dma_tag_t t, bus_addr_t addr) { return addr; } static bus_addr_t wii_dma_bus_mem_to_phys(bus_dma_tag_t t, bus_addr_t addr) { return addr; } static int wii_mem2_dmamem_alloc(bus_dma_tag_t t, bus_size_t size, bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags) { struct mem_region *mem, *avail; /* Restrict memory used for DMA to ranges in MEM2 */ mem_regions(&mem, &avail); if (mem[1].size == 0) { return ENOMEM; } return _bus_dmamem_alloc_range(t, size, alignment, boundary, segs, nsegs, rsegs, flags, mem[1].start, mem[1].start + mem[1].size - PAGE_SIZE - 1); } struct powerpc_bus_dma_tag wii_bus_dma_tag = { 0, /* _bounce_thresh */ _bus_dmamap_create, _bus_dmamap_destroy, _bus_dmamap_load, _bus_dmamap_load_mbuf, _bus_dmamap_load_uio, _bus_dmamap_load_raw, _bus_dmamap_unload, _bus_dmamap_sync, _bus_dmamem_alloc, _bus_dmamem_free, _bus_dmamem_map, _bus_dmamem_unmap, _bus_dmamem_mmap, wii_dma_phys_to_bus_mem, wii_dma_bus_mem_to_phys, }; struct powerpc_bus_dma_tag wii_mem2_bus_dma_tag = { 0, /* _bounce_thresh */ _bus_dmamap_create, _bus_dmamap_destroy, _bus_dmamap_load, _bus_dmamap_load_mbuf, _bus_dmamap_load_uio, _bus_dmamap_load_raw, _bus_dmamap_unload, _bus_dmamap_sync, wii_mem2_dmamem_alloc, _bus_dmamem_free, _bus_dmamem_map, _bus_dmamem_unmap, _bus_dmamem_mmap, wii_dma_phys_to_bus_mem, wii_dma_bus_mem_to_phys, }; /* * Global variables used here and there */ struct mem_region physmemr[3], availmemr[3]; char wii_cmdline[1024]; void initppc(u_int, u_int, u_int, void *); /* Called from locore */ void wii_dolphin_elf_loader_id(void); static void wii_setup(void); static void init_decrementer(void); void initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo) { extern uint32_t ticks_per_sec; extern uint32_t ticks_per_msec; extern unsigned char edata[], end[]; extern struct wii_argv wii_argv; uint32_t mem2_start, mem2_end; register_t scratch; memset(&edata, 0, end - edata); /* clear BSS */ wii_cmdline[0] = '\0'; if (wii_argv.magic == WII_ARGV_MAGIC) { void *ptr = (void *)(uintptr_t)(wii_argv.cmdline & ~0x80000000); if (ptr != NULL) { memcpy(wii_cmdline, ptr, wii_argv.length); } } else { snprintf(wii_cmdline, sizeof(wii_cmdline), WII_DEFAULT_CMDLINE); } mem2_start = in32(GLOBAL_MEM2_AVAIL_START) & ~0x80000000; mem2_end = in32(GLOBAL_MEM2_AVAIL_END) & ~0x80000000; if (mem2_start < WII_MEM2_BASE) { /* Must have been booted from MINI. */ mem2_start = WII_MEM2_BASE + DSP_MEM_SIZE; mem2_end = MINI_MEM2_START; } /* * Clear GLOBAL_MEM2_AVAIL_{START,END} so we can detect the correct * memory size when soft resetting from IOS to MINI. */ out32(GLOBAL_MEM2_AVAIL_START, 0); out32(GLOBAL_MEM2_AVAIL_END, 0); /* MEM1 24MB 1T-SRAM */ physmemr[0].start = WII_MEM1_BASE; physmemr[0].size = WII_MEM1_SIZE; /* MEM2 64MB GDDR3 */ physmemr[1].start = WII_MEM2_BASE; physmemr[1].size = WII_MEM2_SIZE; physmemr[2].size = 0; /* MEM1 available memory */ availmemr[0].start = ((endkernel & ~0x80000000) + PGOFSET) & ~PGOFSET; availmemr[0].size = physmemr[0].size - availmemr[0].start; /* External framebuffer is at the end of MEM1 */ availmemr[0].size -= XFB_SIZE; /* MEM2 available memory */ availmemr[1].start = mem2_start; availmemr[1].size = mem2_end - mem2_start; availmemr[2].size = 0; #ifdef BOOTHOWTO /* * boothowto */ boothowto = BOOTHOWTO; #endif /* HID4[L2_CCFI] must be set to 1 for correct operation of L2 cache */ mtspr(IBM750CL_SPR_HID4, mfspr(IBM750CL_SPR_HID4) | L2_CCFI); /* Configure L2 cache */ l2cr_config = L2CR_L2E | L2CR_L2PE; if (bus_space_init(&wii_mem_tag, "iomem", ex_storage[0], sizeof(ex_storage[0]))) { panic("bus_space_init failed"); } /* * Initialize the BAT registers */ oea_batinit( WII_IOMEM_BASE, BAT_BL_32M, 0); /* * Set up trap vectors */ oea_init(NULL); /* * Get CPU clock */ ticks_per_sec = TIMEBASE_FREQ_HZ; ticks_per_msec = ticks_per_sec / 1000; cpu_timebase = ticks_per_sec; wii_setup(); uvm_md_init(); /* * Initialize pmap module. */ pmap_bootstrap(startkernel, endkernel); /* Now enable translation (and machine checks/recoverable interrupts) */ __asm __volatile ("sync; mfmsr %0; ori %0,%0,%1; mtmsr %0; isync" : "=r"(scratch) : "K"(PSL_IR|PSL_DR|PSL_ME|PSL_RI)); /* * Setup decrementer */ init_decrementer(); } void mem_regions(struct mem_region **mem, struct mem_region **avail) { *mem = physmemr; *avail = availmemr; } /* * Machine dependent startup code. */ void cpu_startup(void) { extern void pi_init_intr(void); oea_startup(NULL); /* * Now that we have VM, malloc()s are OK in bus_space. */ bus_space_mallocok(); /* Set up interrupt controller */ pic_init(); pi_init_intr(); oea_install_extint(pic_ext_intr); } /* * No early console support. */ void consinit(void) { #if NUKBD > 0 ukbd_cnattach(); #endif } /* * Halt or reboot the machine after syncing/dumping according to howto. */ void cpu_reboot(int howto, char *what) { static int syncing; extern void disable_intr(void); boothowto = howto; if (!cold && !(howto & RB_NOSYNC) && !syncing) { syncing = 1; vfs_shutdown(); /* sync */ } splhigh(); if (!cold && (howto & RB_DUMP)) { oea_dumpsys(); } pmf_system_shutdown(boothowto); doshutdownhooks(); disable_intr(); /* Force halt on panic to capture the cause on screen. */ if (panicstr != NULL) { howto |= RB_HALT; } if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { printf("power off\n\n"); out32(HW_GPIOB_OUT, in32(HW_GPIOB_OUT) | __BIT(GPIO_SHUTDOWN)); delay(100000); printf("power off failed!\n\n"); } if (howto & RB_HALT) { printf("halted\n\n"); while (1); } printf("rebooting\n\n"); out32(HW_RESETS, in32(HW_RESETS) & ~RSTBINB); while (1); } static void wii_setup(void) { /* Turn on the drive slot LED. */ wii_slot_led(true); /* Enable PPC access to SHUTDOWN GPIO. */ out32(HW_GPIO_OWNER, in32(HW_GPIO_OWNER) | __BIT(GPIO_SHUTDOWN)); /* Enable PPC access to EXI bus. */ out32(HW_AIPPROT, in32(HW_AIPPROT) | ENAHBIOPI); } static void init_decrementer(void) { extern uint32_t ns_per_tick; extern uint32_t ticks_per_intr; extern uint32_t ticks_per_sec; int scratch, msr; KASSERT(ticks_per_sec != 0); __asm volatile ("mfmsr %0; andi. %1,%0,%2; mtmsr %1" : "=r"(msr), "=r"(scratch) : "K"((u_short)~PSL_EE)); ns_per_tick = 1000000000 / ticks_per_sec; ticks_per_intr = ticks_per_sec / hz; cpu_timebase = ticks_per_sec; curcpu()->ci_lasttb = mftbl(); mtspr(SPR_DEC, ticks_per_intr); mtmsr(msr); }