/* $NetBSD: integrator_machdep.c,v 1.80 2021/08/10 06:47:49 skrll Exp $ */ /* * Copyright (c) 2001,2002 ARM Ltd * 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. The name of the company may not be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD * 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) 1997,1998 Mark Brinicombe. * Copyright (c) 1997,1998 Causality Limited. * 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 Mark Brinicombe * for the NetBSD Project. * 4. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. * * Machine dependent functions for kernel setup for integrator board * * Created : 24/11/97 */ #include __KERNEL_RCSID(0, "$NetBSD: integrator_machdep.c,v 1.80 2021/08/10 06:47:49 skrll Exp $"); #include "opt_arm_debug.h" #include "opt_console.h" #include "opt_ddb.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 "pci.h" #include "ksyms.h" void ifpga_reset(void) __attribute__((noreturn)); /* * The range 0xc1000000 - 0xccffffff is available for kernel VM space * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff */ #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) #define KERNEL_VM_SIZE 0x0C000000 BootConfig bootconfig; /* Boot config storage */ char *boot_args = NULL; char *boot_file = NULL; /* Prototypes */ static void integrator_sdram_bounds (paddr_t *, psize_t *); void consinit(void); /* A load of console goo. */ #include "vga.h" #if NVGA > 0 #include #include #include #include #endif #include "pckbc.h" #if NPCKBC > 0 #include #include #endif #include "com.h" #if NCOM > 0 #include #include #ifndef CONCOMADDR #define CONCOMADDR 0x3f8 #endif #endif /* * Define the default console speed for the board. This is generally * what the firmware provided with the board defaults to. */ #ifndef CONSPEED #define CONSPEED B115200 #endif #ifndef CONMODE #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ #endif int comcnspeed = CONSPEED; int comcnmode = CONMODE; #include "plcom.h" #if (NPLCOM > 0) #include #include #include #include #include #endif #ifndef CONSDEVNAME #define CONSDEVNAME "plcom" #endif #ifndef PLCONSPEED #define PLCONSPEED B38400 #endif #ifndef PLCONMODE #define PLCONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ #endif #ifndef PLCOMCNUNIT #define PLCOMCNUNIT -1 #endif int plcomcnspeed = PLCONSPEED; int plcomcnmode = PLCONMODE; #if 0 extern struct consdev kcomcons; static void kcomcnputc(dev_t, int); #endif /* * void cpu_reboot(int howto, char *bootstr) * * Reboots the system * * Deal with any syncing, unmounting, dumping and shutdown hooks, * then reset the CPU. */ void cpu_reboot(int howto, char *bootstr) { /* * If we are still cold then hit the air brakes * and crash to earth fast */ if (cold) { doshutdownhooks(); pmf_system_shutdown(boothowto); printf("The operating system has halted.\n"); printf("Please press any key to reboot.\n\n"); cngetc(); printf("rebooting...\n"); ifpga_reset(); /*NOTREACHED*/ } /* Disable console buffering */ /* * If RB_NOSYNC was not specified sync the discs. * Note: Unless cold is set to 1 here, syslogd will die during the * unmount. It looks like syslogd is getting woken up only to find * that it cannot page part of the binary in as the filesystem has * been unmounted. */ if (!(howto & RB_NOSYNC)) bootsync(); /* Say NO to interrupts */ splhigh(); /* Do a dump if requested. */ if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) dumpsys(); /* Run any shutdown hooks */ doshutdownhooks(); pmf_system_shutdown(boothowto); /* Make sure IRQ's are disabled */ IRQdisable; if (howto & RB_HALT) { printf("The operating system has halted.\n"); printf("Please press any key to reboot.\n\n"); cngetc(); } printf("rebooting...\n"); ifpga_reset(); /*NOTREACHED*/ } /* Statically mapped devices. */ static const struct pmap_devmap integrator_devmap[] = { #if NPLCOM > 0 && defined(PLCONSOLE) { UART0_BOOT_BASE, IFPGA_IO_BASE + IFPGA_UART0, 1024 * 1024, VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE }, { UART1_BOOT_BASE, IFPGA_IO_BASE + IFPGA_UART1, 1024 * 1024, VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE }, #endif #if NPCI > 0 { IFPGA_PCI_IO_VBASE, IFPGA_PCI_IO_BASE, IFPGA_PCI_IO_VSIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE }, { IFPGA_PCI_CONF_VBASE, IFPGA_PCI_CONF_BASE, IFPGA_PCI_CONF_VSIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE }, #endif { 0, 0, 0, 0, 0 } }; /* * vaddr_t initarm(...) * * Initial entry point on startup. This gets called before main() is * entered. * It should be responsible for setting up everything that must be * in place when main is called. * This includes * Taking a copy of the boot configuration structure. * Initialising the physical console so characters can be printed. * Setting up page tables for the kernel * Relocating the kernel to the bottom of physical memory */ vaddr_t initarm(void *arg) { extern int KERNEL_BASE_phys[]; paddr_t memstart; psize_t memsize; /* * Heads up ... Setup the CPU / MMU / TLB functions */ if (set_cpufuncs()) panic("cpu not recognized!"); /* map some peripheral registers */ pmap_devmap_bootstrap((vaddr_t)armreg_ttbr_read() & -L1_TABLE_SIZE, integrator_devmap); cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); consinit(); /* Talk to the user */ #define BDSTR(s) _BDSTR(s) #define _BDSTR(s) #s printf("\nNetBSD/evbarm (" BDSTR(EVBARM_BOARDTYPE) ") booting ...\n"); /* * Fetch the SDRAM start/size from the CM configuration registers. */ integrator_sdram_bounds(&memstart, &memsize); #if defined(INTEGRATOR_CP) /* * XXX QEMU reports SDRAM starting at 0x100000, but presents a flat * physical memory model. Set memstart to 0x0, so arm32_bootmem_init * doesn't get fooled later. */ memstart = 0; #endif #ifdef VERBOSE_INIT_ARM printf("initarm: Configuring system ...\n"); #endif /* Fake bootconfig structure for the benefit of pmap.c */ /* XXX must make the memory description h/w independent */ bootconfig.dramblocks = 1; bootconfig.dram[0].address = memstart; bootconfig.dram[0].pages = memsize / PAGE_SIZE; bootconfig.dram[0].flags = BOOT_DRAM_CAN_DMA; arm32_bootmem_init(bootconfig.dram[0].address, bootconfig.dram[0].pages * PAGE_SIZE, (unsigned int) KERNEL_BASE_phys); arm32_kernel_vm_init(KERNEL_VM_BASE, ARM_VECTORS_LOW, 0, integrator_devmap, false); #ifdef VERBOSE_INIT_ARM printf("done.\n"); #endif return initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, NULL, 0); } void consinit(void) { static int consinit_called = 0; #if 0 char *console = CONSDEVNAME; #endif if (consinit_called != 0) return; consinit_called = 1; #if NPLCOM > 0 && defined(PLCONSOLE) if (PLCOMCNUNIT == 0) { extern struct bus_space ifpga_common_bs_tag; static struct plcom_instance ifpga_pi1 = { #if defined(INTEGRATOR_CP) .pi_type = PLCOM_TYPE_PL011, #else .pi_type = PLCOM_TYPE_PL010, #endif .pi_iot = &ifpga_common_bs_tag, .pi_size = IFPGA_UART_SIZE, .pi_iobase = IFPGA_UART0 }; if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT)) panic("can't init serial console"); return; } else if (PLCOMCNUNIT == 1) { extern struct bus_space ifpga_common_bs_tag; static struct plcom_instance ifpga_pi1 = { #if defined(INTEGRATOR_CP) .pi_type = PLCOM_TYPE_PL011, #else .pi_type = PLCOM_TYPE_PL010, #endif .pi_iot = &ifpga_common_bs_tag, .pi_size = IFPGA_UART_SIZE, .pi_iobase = IFPGA_UART1 }; if (plcomcnattach(&ifpga_pi1, plcomcnspeed, IFPGA_UART_CLK, plcomcnmode, PLCOMCNUNIT)) panic("can't init serial console"); return; } #endif #if (NCOM > 0) if (comcnattach(&isa_io_bs_tag, CONCOMADDR, comcnspeed, COM_FREQ, COM_TYPE_NORMAL, comcnmode)) panic("can't init serial console @%x", CONCOMADDR); return; #endif panic("No serial console configured"); } static void integrator_sdram_bounds(paddr_t *memstart, psize_t *memsize) { volatile unsigned long *cm_sdram = (volatile unsigned long *)0x10000020; volatile unsigned long *cm_stat = (volatile unsigned long *)0x10000010; *memstart = *cm_stat & 0x00ff0000; /* * Although the SSRAM overlaps the SDRAM, we can use the wrap-around * to access the entire bank. */ switch ((*cm_sdram >> 2) & 0x7) { case 0: *memsize = 16 * 1024 * 1024; break; case 1: *memsize = 32 * 1024 * 1024; break; case 2: *memsize = 64 * 1024 * 1024; break; case 3: *memsize = 128 * 1024 * 1024; break; case 4: /* With 256M of memory there is no wrap-around. */ *memsize = 256 * 1024 * 1024 - *memstart; break; default: printf("CM_SDRAM retuns unknown value, using 16M\n"); *memsize = 16 * 1024 * 1024; break; } }