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2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 | /* * $Id: prom.c,v 1.79 1999/10/08 01:56:32 paulus Exp $ * * Procedures for interfacing to the Open Firmware PROM on * Power Macintosh computers. * * In particular, we are interested in the device tree * and in using some of its services (exit, write to stdout). * * Paul Mackerras August 1996. * Copyright (C) 1996 Paul Mackerras. */ #include <stdarg.h> #include <linux/config.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/init.h> #include <linux/version.h> #include <linux/threads.h> #include <linux/spinlock.h> #include <asm/init.h> #include <asm/prom.h> #include <asm/page.h> #include <asm/processor.h> #include <asm/irq.h> #include <asm/io.h> #include <asm/smp.h> #include <asm/bootx.h> #include <asm/system.h> #include <asm/gemini.h> #include <asm/mmu.h> #include <asm/pgtable.h> #include <asm/bitops.h> #ifdef CONFIG_FB #include <asm/linux_logo.h> #endif /* * Properties whose value is longer than this get excluded from our * copy of the device tree. This way we don't waste space storing * things like "driver,AAPL,MacOS,PowerPC" properties. */ #define MAX_PROPERTY_LENGTH 1024 struct prom_args { const char *service; int nargs; int nret; void *args[10]; }; struct pci_address { unsigned a_hi; unsigned a_mid; unsigned a_lo; }; struct pci_reg_property { struct pci_address addr; unsigned size_hi; unsigned size_lo; }; struct pci_range { struct pci_address addr; unsigned phys; unsigned size_hi; unsigned size_lo; }; struct isa_reg_property { unsigned space; unsigned address; unsigned size; }; struct pci_intr_map { struct pci_address addr; unsigned dunno; phandle int_ctrler; unsigned intr; }; typedef unsigned long interpret_func(struct device_node *, unsigned long, int, int); static interpret_func interpret_pci_props; static interpret_func interpret_dbdma_props; static interpret_func interpret_isa_props; static interpret_func interpret_macio_props; static interpret_func interpret_root_props; #ifndef FB_MAX /* avoid pulling in all of the fb stuff */ #define FB_MAX 8 #endif char *prom_display_paths[FB_MAX] __initdata = { 0, }; unsigned int prom_num_displays = 0; char *of_stdout_device = 0; prom_entry prom = 0; ihandle prom_chosen = 0, prom_stdout = 0, prom_disp_node = 0; extern char *klimit; char *bootpath = 0; char *bootdevice = 0; unsigned int rtas_data = 0; /* physical pointer */ unsigned int rtas_entry = 0; /* physical pointer */ unsigned int rtas_size = 0; unsigned int old_rtas = 0; /* Set for a newworld machine */ int use_of_interrupt_tree = 0; int pmac_newworld = 0; static struct device_node *allnodes = 0; #ifdef CONFIG_BOOTX_TEXT #define NO_SCROLL static void clearscreen(void); static void flushscreen(void); #ifndef NO_SCROLL static void scrollscreen(void); #endif static void prepare_disp_BAT(void); static void draw_byte(unsigned char c, long locX, long locY); static void draw_byte_32(unsigned char *bits, unsigned long *base, int rb); static void draw_byte_16(unsigned char *bits, unsigned long *base, int rb); static void draw_byte_8(unsigned char *bits, unsigned long *base, int rb); /* We want those in data, not BSS */ static long g_loc_X = 0; static long g_loc_Y = 0; static long g_max_loc_X = 0; static long g_max_loc_Y = 0; unsigned long disp_BAT[2] = {0, 0}; #define cmapsz (16*256) static unsigned char vga_font[cmapsz]; int bootx_text_mapped = 1; #endif /* CONFIG_BOOTX_TEXT */ static void *call_prom(const char *service, int nargs, int nret, ...); static void prom_exit(void); static unsigned long copy_device_tree(unsigned long, unsigned long); static unsigned long inspect_node(phandle, struct device_node *, unsigned long, unsigned long, struct device_node ***); static unsigned long finish_node(struct device_node *, unsigned long, interpret_func *, int, int); static unsigned long finish_node_interrupts(struct device_node *, unsigned long); static unsigned long check_display(unsigned long); static int prom_next_node(phandle *); static void *early_get_property(unsigned long, unsigned long, char *); #ifdef CONFIG_BOOTX_TEXT static void setup_disp_fake_bi(ihandle dp); static void prom_welcome(boot_infos_t* bi, unsigned long phys); #endif extern void enter_rtas(void *); extern unsigned long reloc_offset(void); void phys_call_rtas(int, int, int, ...); extern char cmd_line[512]; /* XXX */ boot_infos_t *boot_infos = 0; /* init it so it's in data segment not bss */ #ifdef CONFIG_BOOTX_TEXT boot_infos_t *disp_bi = 0; boot_infos_t fake_bi = {0,}; #endif unsigned long dev_tree_size; /* * prom_init() is called very early on, before the kernel text * and data have been mapped to KERNELBASE. At this point the code * is running at whatever address it has been loaded at, so * references to extern and static variables must be relocated * explicitly. The procedure reloc_offset() returns the address * we're currently running at minus the address we were linked at. * (Note that strings count as static variables.) * * Because OF may have mapped I/O devices into the area starting at * KERNELBASE, particularly on CHRP machines, we can't safely call * OF once the kernel has been mapped to KERNELBASE. Therefore all * OF calls should be done within prom_init(), and prom_init() * and all routines called within it must be careful to relocate * references as necessary. * * Note that the bss is cleared *after* prom_init runs, so we have * to make sure that any static or extern variables it accesses * are put in the data segment. */ #define PTRRELOC(x) ((typeof(x))((unsigned long)(x) + offset)) #define PTRUNRELOC(x) ((typeof(x))((unsigned long)(x) - offset)) #define RELOC(x) (*PTRRELOC(&(x))) #define ALIGN(x) (((x) + sizeof(unsigned long)-1) & -sizeof(unsigned long)) /* Is boot-info compatible ? */ #define BOOT_INFO_IS_COMPATIBLE(bi) ((bi)->compatible_version <= BOOT_INFO_VERSION) #define BOOT_INFO_IS_V2_COMPATIBLE(bi) ((bi)->version >= 2) #define BOOT_INFO_IS_V4_COMPATIBLE(bi) ((bi)->version >= 4) __init static void prom_exit() { struct prom_args args; unsigned long offset = reloc_offset(); args.service = "exit"; args.nargs = 0; args.nret = 0; RELOC(prom)(&args); for (;;) /* should never get here */ ; } __init void prom_enter(void) { struct prom_args args; unsigned long offset = reloc_offset(); args.service = RELOC("enter"); args.nargs = 0; args.nret = 0; RELOC(prom)(&args); } __init static void * call_prom(const char *service, int nargs, int nret, ...) { va_list list; int i; unsigned long offset = reloc_offset(); struct prom_args prom_args; prom_args.service = service; prom_args.nargs = nargs; prom_args.nret = nret; va_start(list, nret); for (i = 0; i < nargs; ++i) prom_args.args[i] = va_arg(list, void *); va_end(list); for (i = 0; i < nret; ++i) prom_args.args[i + nargs] = 0; RELOC(prom)(&prom_args); return prom_args.args[nargs]; } __init void prom_print(const char *msg) { const char *p, *q; unsigned long offset = reloc_offset(); if (RELOC(prom_stdout) == 0) { #ifdef CONFIG_BOOTX_TEXT if (RELOC(disp_bi) != 0) prom_drawstring(msg); #endif return; } for (p = msg; *p != 0; p = q) { for (q = p; *q != 0 && *q != '\n'; ++q) ; if (q > p) call_prom(RELOC("write"), 3, 1, RELOC(prom_stdout), p, q - p); if (*q != 0) { ++q; call_prom(RELOC("write"), 3, 1, RELOC(prom_stdout), RELOC("\r\n"), 2); } } } void prom_print_hex(unsigned int v) { char buf[16]; int i, c; for (i = 0; i < 8; ++i) { c = (v >> ((7-i)*4)) & 0xf; c += (c >= 10)? ('a' - 10): '0'; buf[i] = c; } buf[i] = ' '; buf[i+1] = 0; prom_print(buf); } void prom_print_nl(void) { unsigned long offset = reloc_offset(); prom_print(RELOC("\n")); } unsigned long smp_chrp_cpu_nr __initdata = 0; #ifdef CONFIG_SMP /* * With CHRP SMP we need to use the OF to start the other * processors so we can't wait until smp_boot_cpus (the OF is * trashed by then) so we have to put the processors into * a holding pattern controlled by the kernel (not OF) before * we destroy the OF. * * This uses a chunk of high memory, puts some holding pattern * code there and sends the other processors off to there until * smp_boot_cpus tells them to do something. We do that by using * physical address 0x0. The holding pattern checks that address * until its cpu # is there, when it is that cpu jumps to * __secondary_start(). smp_boot_cpus() takes care of setting those * values. * * We also use physical address 0x4 here to tell when a cpu * is in its holding pattern code. * * -- Cort */ static void prom_hold_cpus(unsigned long mem) { extern void __secondary_hold(void); unsigned long i; int cpu; phandle node; unsigned long offset = reloc_offset(); char type[16], *path; unsigned int reg; /* * XXX: hack to make sure we're chrp, assume that if we're * chrp we have a device_type property -- Cort */ node = call_prom(RELOC("finddevice"), 1, 1, RELOC("/")); if ( (int)call_prom(RELOC("getprop"), 4, 1, node, RELOC("device_type"),type, sizeof(type)) <= 0) return; /* copy the holding pattern code to someplace safe (0) */ /* the holding pattern is now within the first 0x100 bytes of the kernel image -- paulus */ memcpy((void *)0, (void *)(KERNELBASE + offset), 0x100); flush_icache_range(0, 0x100); /* look for cpus */ *(unsigned long *)(0x0) = 0; asm volatile("dcbf 0,%0": : "r" (0) : "memory"); for (node = 0; prom_next_node(&node); ) { type[0] = 0; call_prom(RELOC("getprop"), 4, 1, node, RELOC("device_type"), type, sizeof(type)); if (strcmp(type, RELOC("cpu")) != 0) continue; path = (char *) mem; memset(path, 0, 256); if ((int) call_prom(RELOC("package-to-path"), 3, 1, node, path, 255) < 0) continue; reg = -1; call_prom(RELOC("getprop"), 4, 1, node, RELOC("reg"), ®, sizeof(reg)); cpu = RELOC(smp_chrp_cpu_nr)++; RELOC(smp_hw_index)[cpu] = reg; /* XXX: hack - don't start cpu 0, this cpu -- Cort */ if (cpu == 0) continue; prom_print(RELOC("starting cpu ")); prom_print(path); *(ulong *)(0x4) = 0; call_prom(RELOC("start-cpu"), 3, 0, node, __pa(__secondary_hold), cpu); prom_print(RELOC("...")); for ( i = 0 ; (i < 10000) && (*(ulong *)(0x4) == 0); i++ ) ; if (*(ulong *)(0x4) == cpu) prom_print(RELOC("ok\n")); else { prom_print(RELOC("failed: ")); prom_print_hex(*(ulong *)0x4); prom_print_nl(); } } } #endif /* CONFIG_SMP */ void bootx_init(unsigned long r4, unsigned long phys) { boot_infos_t *bi = (boot_infos_t *) r4; unsigned long space; unsigned long ptr, x; char *model; unsigned long offset = reloc_offset(); RELOC(boot_infos) = PTRUNRELOC(bi); if (!BOOT_INFO_IS_V2_COMPATIBLE(bi)) bi->logicalDisplayBase = 0; #ifdef CONFIG_BOOTX_TEXT RELOC(g_loc_X) = 0; RELOC(g_loc_Y) = 0; RELOC(g_max_loc_X) = (bi->dispDeviceRect[2] - bi->dispDeviceRect[0]) / 8; RELOC(g_max_loc_Y) = (bi->dispDeviceRect[3] - bi->dispDeviceRect[1]) / 16; RELOC(disp_bi) = PTRUNRELOC(bi); clearscreen(); /* Test if boot-info is compatible. Done only in config CONFIG_BOOTX_TEXT since there is nothing much we can do with an incompatible version, except display a message and eventually hang the processor... I'll try to keep enough of boot-info compatible in the future to always allow display of this message; */ if (!BOOT_INFO_IS_COMPATIBLE(bi)) prom_print(RELOC(" !!! WARNING - Incompatible version of BootX !!!\n\n\n")); prom_welcome(bi, phys); flushscreen(); #endif /* CONFIG_BOOTX_TEXT */ /* New BootX enters kernel with MMU off, i/os are not allowed here. This hack will have been done by the boostrap anyway. */ if (bi->version < 4) { /* * XXX If this is an iMac, turn off the USB controller. */ model = (char *) early_get_property (r4 + bi->deviceTreeOffset, 4, RELOC("model")); if (model && (strcmp(model, RELOC("iMac,1")) == 0 || strcmp(model, RELOC("PowerMac1,1")) == 0)) { out_le32((unsigned *)0x80880008, 1); /* XXX */ } } /* Move klimit to enclose device tree, args, ramdisk, etc... */ if (bi->version < 5) { space = bi->deviceTreeOffset + bi->deviceTreeSize; if (bi->ramDisk) space = bi->ramDisk + bi->ramDiskSize; } else space = bi->totalParamsSize; RELOC(klimit) = PTRUNRELOC((char *) bi + space); /* New BootX will have flushed all TLBs and enters kernel with MMU switched OFF, so this should not be useful anymore. */ if (bi->version < 4) { /* * Touch each page to make sure the PTEs for them * are in the hash table - the aim is to try to avoid * getting DSI exceptions while copying the kernel image. */ for (ptr = (KERNELBASE + offset) & PAGE_MASK; ptr < (unsigned long)bi + space; ptr += PAGE_SIZE) x = *(volatile unsigned long *)ptr; } #ifdef CONFIG_BOOTX_TEXT prepare_disp_BAT(); prom_drawstring(RELOC("booting...\n")); flushscreen(); RELOC(bootx_text_mapped) = 1; #endif } #ifdef CONFIG_PPC64BRIDGE /* * Set up a hash table with a set of entries in it to map the * first 64MB of RAM. This is used on 64-bit machines since * some of them don't have BATs. * We assume the PTE will fit in the primary PTEG. */ static inline void make_pte(unsigned long htab, unsigned int hsize, unsigned int va, unsigned int pa, int mode) { unsigned int *pteg; unsigned int hash, i; hash = ((va >> 5) ^ (va >> 21)) & 0x7fff80; pteg = (unsigned int *)(htab + (hash & (hsize - 1))); for (i = 0; i < 8; ++i, pteg += 4) { if ((pteg[1] & 1) == 0) { pteg[1] = ((va >> 16) & 0xff80) | 1; pteg[3] = pa | mode; break; } } } extern unsigned long _SDR1; extern PTE *Hash; extern unsigned long Hash_size; void prom_alloc_htab(void) { unsigned int hsize; unsigned long htab; unsigned int addr; unsigned long offset = reloc_offset(); /* * Because of OF bugs we can't use the "claim" client * interface to allocate memory for the hash table. * This code is only used on 64-bit PPCs, and the only * 64-bit PPCs at the moment are RS/6000s, and their * OF is based at 0xc00000 (the 12M point), so we just * arbitrarily use the 0x800000 - 0xc00000 region for the * hash table. * -- paulus. */ #ifdef CONFIG_POWER4 hsize = 4 << 20; /* POWER4 has no BATs */ #else hsize = 2 << 20; #endif /* CONFIG_POWER4 */ htab = (8 << 20); RELOC(Hash) = (void *)(htab + KERNELBASE); RELOC(Hash_size) = hsize; RELOC(_SDR1) = htab + __ilog2(hsize) - 18; /* * Put in PTEs for the first 64MB of RAM */ cacheable_memzero((void *)htab, hsize); for (addr = 0; addr < 0x4000000; addr += 0x1000) make_pte(htab, hsize, addr + KERNELBASE, addr, _PAGE_ACCESSED | _PAGE_COHERENT | PP_RWXX); } #endif /* CONFIG_PPC64BRIDGE */ static __init void prom_instantiate_rtas(void) { ihandle prom_rtas; unsigned int i; struct prom_args prom_args; unsigned long offset = reloc_offset(); prom_rtas = call_prom(RELOC("finddevice"), 1, 1, RELOC("/rtas")); if (prom_rtas == (void *) -1) return; RELOC(rtas_size) = 0; call_prom(RELOC("getprop"), 4, 1, prom_rtas, RELOC("rtas-size"), &RELOC(rtas_size), sizeof(rtas_size)); prom_print(RELOC("instantiating rtas")); if (RELOC(rtas_size) == 0) { RELOC(rtas_data) = 0; } else { /* * Ask OF for some space for RTAS. * Actually OF has bugs so we just arbitrarily * use memory at the 6MB point. */ RELOC(rtas_data) = 6 << 20; prom_print(RELOC(" at ")); prom_print_hex(RELOC(rtas_data)); } prom_rtas = call_prom(RELOC("open"), 1, 1, RELOC("/rtas")); prom_print(RELOC("...")); prom_args.service = RELOC("call-method"); prom_args.nargs = 3; prom_args.nret = 2; prom_args.args[0] = RELOC("instantiate-rtas"); prom_args.args[1] = prom_rtas; prom_args.args[2] = (void *) RELOC(rtas_data); RELOC(prom)(&prom_args); i = 0; if (prom_args.args[3] == 0) i = (unsigned int)prom_args.args[4]; RELOC(rtas_entry) = i; if ((RELOC(rtas_entry) == -1) || (RELOC(rtas_entry) == 0)) prom_print(RELOC(" failed\n")); else prom_print(RELOC(" done\n")); } /* * We enter here early on, when the Open Firmware prom is still * handling exceptions and the MMU hash table for us. */ __init unsigned long prom_init(int r3, int r4, prom_entry pp) { int chrp = 0; unsigned long mem; ihandle prom_mmu, prom_op; unsigned long offset = reloc_offset(); int l; char *p, *d; int prom_version = 0; unsigned long phys; /* Default */ phys = offset + KERNELBASE; /* check if we're apus, return if we are */ if ( r3 == 0x61707573 ) return phys; /* If we came here from BootX, clear the screen, * set up some pointers and return. */ if (r3 == 0x426f6f58 && pp == NULL) { bootx_init(r4, phys); return phys; } /* check if we're prep, return if we are */ if ( *(unsigned long *)(0) == 0xdeadc0de ) return phys; /* First get a handle for the stdout device */ RELOC(prom) = pp; RELOC(prom_chosen) = call_prom(RELOC("finddevice"), 1, 1, RELOC("/chosen")); if (RELOC(prom_chosen) == (void *)-1) prom_exit(); if ((int) call_prom(RELOC("getprop"), 4, 1, RELOC(prom_chosen), RELOC("stdout"), &RELOC(prom_stdout), sizeof(prom_stdout)) <= 0) prom_exit(); /* Get the full OF pathname of the stdout device */ mem = (unsigned long) RELOC(klimit) + offset; p = (char *) mem; memset(p, 0, 256); call_prom(RELOC("instance-to-path"), 3, 1, RELOC(prom_stdout), p, 255); RELOC(of_stdout_device) = PTRUNRELOC(p); mem += strlen(p) + 1; /* Find the OF version */ prom_op = call_prom(RELOC("finddevice"), 1, 1, RELOC("/openprom")); prom_version = 0; if (prom_op != (void*)-1) { char model[64]; int sz; sz = (int)call_prom(RELOC("getprop"), 4, 1, prom_op, RELOC("model"), model, 64); if (sz > 0) { char *c; /* hack to skip the ibm chrp firmware # */ if ( strncmp(model,RELOC("IBM"),3) ) { for (c = model; *c; c++) if (*c >= '0' && *c <= '9') { prom_version = *c - '0'; break; } } else chrp = 1; } } if (prom_version >= 3) prom_print(RELOC("OF Version 3 detected.\n")); /* Get the boot device and translate it to a full OF pathname. */ p = (char *) mem; l = (int) call_prom(RELOC("getprop"), 4, 1, RELOC(prom_chosen), RELOC("bootpath"), p, 1<<20); if (l > 0) { p[l] = 0; /* should already be null-terminated */ RELOC(bootpath) = PTRUNRELOC(p); mem += l + 1; d = (char *) mem; *d = 0; call_prom(RELOC("canon"), 3, 1, p, d, 1<<20); RELOC(bootdevice) = PTRUNRELOC(d); mem = ALIGN(mem + strlen(d) + 1); } prom_instantiate_rtas(); #ifdef CONFIG_PPC64BRIDGE /* * Find out how much memory we have and allocate a * suitably-sized hash table. */ prom_alloc_htab(); #endif #ifdef CONFIG_SMP prom_hold_cpus(mem); #endif mem = check_display(mem); prom_print(RELOC("copying OF device tree...")); mem = copy_device_tree(mem, mem + (1<<20)); prom_print(RELOC("done\n")); RELOC(klimit) = (char *) (mem - offset); /* If we are already running at 0xc0000000, we assume we were loaded by * an OF bootloader which did set a BAT for us. This breaks OF translate * so we force phys to be 0 */ if (offset == 0) phys = 0; else { if ((int) call_prom(RELOC("getprop"), 4, 1, RELOC(prom_chosen), RELOC("mmu"), &prom_mmu, sizeof(prom_mmu)) <= 0) { prom_print(RELOC(" no MMU found\n")); } else { int nargs; struct prom_args prom_args; nargs = 4; prom_args.service = RELOC("call-method"); prom_args.nargs = nargs; prom_args.nret = 4; prom_args.args[0] = RELOC("translate"); prom_args.args[1] = prom_mmu; prom_args.args[2] = (void *)(offset + KERNELBASE); prom_args.args[3] = (void *)1; RELOC(prom)(&prom_args); /* We assume the phys. address size is 3 cells */ if (prom_args.args[nargs] != 0) prom_print(RELOC(" (translate failed)\n")); else phys = (unsigned long)prom_args.args[nargs+3]; } } #ifdef CONFIG_BOOTX_TEXT if (RELOC(prom_disp_node) != 0) setup_disp_fake_bi(RELOC(prom_disp_node)); #endif /* If OpenFirmware version >= 3, then use quiesce call */ if (prom_version >= 3) { prom_print(RELOC("Calling quiesce ...\n")); call_prom(RELOC("quiesce"), 0, 0); } #ifdef CONFIG_BOOTX_TEXT if (!chrp && RELOC(disp_bi)) { RELOC(prom_stdout) = 0; /* stop OF output */ clearscreen(); prepare_disp_BAT(); prom_welcome(PTRRELOC(RELOC(disp_bi)), phys); prom_drawstring(RELOC("booting...\n")); RELOC(bootx_text_mapped) = 1; } else { RELOC(bootx_text_mapped) = 0; } #endif prom_print(RELOC("returning ")); prom_print_hex(phys); prom_print(RELOC(" from prom_init\n")); RELOC(prom_stdout) = 0; return phys; } void phys_call_rtas(int service, int nargs, int nret, ...) { va_list list; union { unsigned long words[16]; double align; } u; unsigned long offset = reloc_offset(); void (*rtas)(void *, unsigned long); int i; u.words[0] = service; u.words[1] = nargs; u.words[2] = nret; va_start(list, nret); for (i = 0; i < nargs; ++i) u.words[i+3] = va_arg(list, unsigned long); va_end(list); rtas = (void (*)(void *, unsigned long)) RELOC(rtas_entry); rtas(&u, RELOC(rtas_data)); } #ifdef CONFIG_BOOTX_TEXT __init static void prom_welcome(boot_infos_t* bi, unsigned long phys) { unsigned long offset = reloc_offset(); unsigned long flags; unsigned long pvr; prom_drawstring(RELOC("Welcome to Linux, kernel " UTS_RELEASE "\n")); prom_drawstring(RELOC("\nstarted at : 0x")); prom_drawhex(phys); prom_drawstring(RELOC("\nlinked at : 0x")); prom_drawhex(KERNELBASE); prom_drawstring(RELOC("\nframe buffer at : 0x")); prom_drawhex((unsigned long)bi->dispDeviceBase); prom_drawstring(RELOC(" (phys), 0x")); prom_drawhex((unsigned long)bi->logicalDisplayBase); prom_drawstring(RELOC(" (log)")); prom_drawstring(RELOC("\nklimit : 0x")); prom_drawhex((unsigned long)RELOC(klimit)); prom_drawstring(RELOC("\nMSR : 0x")); __asm__ __volatile__ ("mfmsr %0" : "=r" (flags)); prom_drawhex(flags); __asm__ __volatile__ ("mfspr %0, 287" : "=r" (pvr)); pvr >>= 16; if (pvr > 1) { prom_drawstring(RELOC("\nHID0 : 0x")); __asm__ __volatile__ ("mfspr %0, 1008" : "=r" (flags)); prom_drawhex(flags); } if (pvr == 8 || pvr == 12) { prom_drawstring(RELOC("\nICTC : 0x")); __asm__ __volatile__ ("mfspr %0, 1019" : "=r" (flags)); prom_drawhex(flags); } prom_drawstring(RELOC("\n\n")); } /* Calc BAT values for mapping the display and store them * in disp_BAT. Those values are then used from head.S to map * the display during identify_machine() and MMU_Init() * * For now, the display is mapped in place (1:1). This should * be changed if the display physical address overlaps * KERNELBASE, which is fortunately not the case on any machine * I know of. This mapping is temporary and will disappear as * soon as the setup done by MMU_Init() is applied * * For now, we align the BAT and then map 8Mb on 601 and 16Mb * on other PPCs. This may cause trouble if the framebuffer * is really badly aligned, but I didn't encounter this case * yet. */ __init static void prepare_disp_BAT(void) { unsigned long offset = reloc_offset(); boot_infos_t* bi = PTRRELOC(RELOC(disp_bi)); unsigned long addr = (unsigned long)bi->dispDeviceBase; if ((_get_PVR() >> 16) != 1) { /* 603, 604, G3, G4, ... */ addr &= 0xFF000000UL; RELOC(disp_BAT[0]) = addr | (BL_16M<<2) | 2; RELOC(disp_BAT[1]) = addr | (_PAGE_NO_CACHE | _PAGE_GUARDED | BPP_RW); } else { /* 601 */ addr &= 0xFF800000UL; RELOC(disp_BAT[0]) = addr | (_PAGE_NO_CACHE | PP_RWXX) | 4; RELOC(disp_BAT[1]) = addr | BL_8M | 0x40; } bi->logicalDisplayBase = bi->dispDeviceBase; } #endif static int prom_set_color(ihandle ih, int i, int r, int g, int b) { struct prom_args prom_args; unsigned long offset = reloc_offset(); prom_args.service = RELOC("call-method"); prom_args.nargs = 6; prom_args.nret = 1; prom_args.args[0] = RELOC("color!"); prom_args.args[1] = ih; prom_args.args[2] = (void *) i; prom_args.args[3] = (void *) b; prom_args.args[4] = (void *) g; prom_args.args[5] = (void *) r; RELOC(prom)(&prom_args); return (int) prom_args.args[6]; } /* * If we have a display that we don't know how to drive, * we will want to try to execute OF's open method for it * later. However, OF will probably fall over if we do that * we've taken over the MMU. * So we check whether we will need to open the display, * and if so, open it now. */ __init static unsigned long check_display(unsigned long mem) { phandle node; ihandle ih; int i; unsigned long offset = reloc_offset(); char type[16], *path; static unsigned char default_colors[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0xaa, 0x00, 0xaa, 0x00, 0x00, 0xaa, 0xaa, 0xaa, 0x00, 0x00, 0xaa, 0x00, 0xaa, 0xaa, 0xaa, 0x00, 0xaa, 0xaa, 0xaa, 0x55, 0x55, 0x55, 0x55, 0x55, 0xff, 0x55, 0xff, 0x55, 0x55, 0xff, 0xff, 0xff, 0x55, 0x55, 0xff, 0x55, 0xff, 0xff, 0xff, 0x55, 0xff, 0xff, 0xff }; RELOC(prom_disp_node) = 0; for (node = 0; prom_next_node(&node); ) { type[0] = 0; call_prom(RELOC("getprop"), 4, 1, node, RELOC("device_type"), type, sizeof(type)); if (strcmp(type, RELOC("display")) != 0) continue; /* It seems OF doesn't null-terminate the path :-( */ path = (char *) mem; memset(path, 0, 256); if ((int) call_prom(RELOC("package-to-path"), 3, 1, node, path, 255) < 0) continue; prom_print(RELOC("opening display ")); prom_print(path); ih = call_prom(RELOC("open"), 1, 1, path); if (ih == 0 || ih == (ihandle) -1) { prom_print(RELOC("... failed\n")); continue; } prom_print(RELOC("... ok\n")); if (RELOC(prom_disp_node) == 0) RELOC(prom_disp_node) = node; /* Setup a useable color table when the appropriate * method is available. Should update this to set-colors */ for (i = 0; i < 32; i++) if (prom_set_color(ih, i, RELOC(default_colors)[i*3], RELOC(default_colors)[i*3+1], RELOC(default_colors)[i*3+2]) != 0) break; #ifdef CONFIG_FB for (i = 0; i < LINUX_LOGO_COLORS; i++) if (prom_set_color(ih, i + 32, RELOC(linux_logo_red)[i], RELOC(linux_logo_green)[i], RELOC(linux_logo_blue)[i]) != 0) break; #endif /* CONFIG_FB */ /* * If this display is the device that OF is using for stdout, * move it to the front of the list. */ mem += strlen(path) + 1; i = RELOC(prom_num_displays)++; if (RELOC(of_stdout_device) != 0 && i > 0 && strcmp(PTRRELOC(RELOC(of_stdout_device)), path) == 0) { for (; i > 0; --i) RELOC(prom_display_paths[i]) = RELOC(prom_display_paths[i-1]); } RELOC(prom_display_paths[i]) = PTRUNRELOC(path); if (RELOC(prom_num_displays) >= FB_MAX) break; } return ALIGN(mem); } /* This function will enable the early boot text when doing OF booting. This * way, xmon output should work too */ #ifdef CONFIG_BOOTX_TEXT __init static void setup_disp_fake_bi(ihandle dp) { int width = 640, height = 480, depth = 8, pitch; unsigned address; boot_infos_t* bi; unsigned long offset = reloc_offset(); struct pci_reg_property addrs[8]; int i, naddrs; char name[32]; char *getprop = RELOC("getprop"); prom_print(RELOC("Initializing fake screen: ")); memset(name, 0, sizeof(name)); call_prom(getprop, 4, 1, dp, RELOC("name"), name, sizeof(name)); name[sizeof(name)-1] = 0; prom_print(name); prom_print(RELOC("\n")); call_prom(getprop, 4, 1, dp, RELOC("width"), &width, sizeof(width)); call_prom(getprop, 4, 1, dp, RELOC("height"), &height, sizeof(height)); call_prom(getprop, 4, 1, dp, RELOC("depth"), &depth, sizeof(depth)); pitch = width * ((depth + 7) / 8); call_prom(getprop, 4, 1, dp, RELOC("linebytes"), &pitch, sizeof(pitch)); if (pitch == 1) pitch = 0x1000; /* for strange IBM display */ address = 0; call_prom(getprop, 4, 1, dp, RELOC("address"), &address, sizeof(address)); if (address == 0) { /* look for an assigned address with a size of >= 1MB */ naddrs = (int) call_prom(getprop, 4, 1, dp, RELOC("assigned-addresses"), addrs, sizeof(addrs)); naddrs /= sizeof(struct pci_reg_property); for (i = 0; i < naddrs; ++i) { if (addrs[i].size_lo >= (1 << 20)) { address = addrs[i].addr.a_lo; /* use the BE aperture if possible */ if (addrs[i].size_lo >= (16 << 20)) address += (8 << 20); break; } } if (address == 0) { prom_print(RELOC("Failed to get address\n")); return; } } /* kludge for valkyrie */ if (strcmp(name, RELOC("valkyrie")) == 0) address += 0x1000; RELOC(disp_bi) = &fake_bi; bi = PTRRELOC((&fake_bi)); RELOC(g_loc_X) = 0; RELOC(g_loc_Y) = 0; RELOC(g_max_loc_X) = width / 8; RELOC(g_max_loc_Y) = height / 16; bi->logicalDisplayBase = (unsigned char *)address; bi->dispDeviceBase = (unsigned char *)address; bi->dispDeviceRowBytes = pitch; bi->dispDeviceDepth = depth; bi->dispDeviceRect[0] = bi->dispDeviceRect[1] = 0; bi->dispDeviceRect[2] = width; bi->dispDeviceRect[3] = height; } #endif __init static int prom_next_node(phandle *nodep) { phandle node; unsigned long offset = reloc_offset(); if ((node = *nodep) != 0 && (*nodep = call_prom(RELOC("child"), 1, 1, node)) != 0) return 1; if ((*nodep = call_prom(RELOC("peer"), 1, 1, node)) != 0) return 1; for (;;) { if ((node = call_prom(RELOC("parent"), 1, 1, node)) == 0) return 0; if ((*nodep = call_prom(RELOC("peer"), 1, 1, node)) != 0) return 1; } } /* * Make a copy of the device tree from the PROM. */ __init static unsigned long copy_device_tree(unsigned long mem_start, unsigned long mem_end) { phandle root; unsigned long new_start; struct device_node **allnextp; unsigned long offset = reloc_offset(); root = call_prom(RELOC("peer"), 1, 1, (phandle)0); if (root == (phandle)0) { prom_print(RELOC("couldn't get device tree root\n")); prom_exit(); } allnextp = &RELOC(allnodes); mem_start = ALIGN(mem_start); new_start = inspect_node(root, 0, mem_start, mem_end, &allnextp); *allnextp = 0; return new_start; } __init static unsigned long inspect_node(phandle node, struct device_node *dad, unsigned long mem_start, unsigned long mem_end, struct device_node ***allnextpp) { int l; phandle child; struct device_node *np; struct property *pp, **prev_propp; char *prev_name, *namep; unsigned char *valp; unsigned long offset = reloc_offset(); np = (struct device_node *) mem_start; mem_start += sizeof(struct device_node); memset(np, 0, sizeof(*np)); np->node = node; **allnextpp = PTRUNRELOC(np); *allnextpp = &np->allnext; if (dad != 0) { np->parent = PTRUNRELOC(dad); /* we temporarily use the `next' field as `last_child'. */ if (dad->next == 0) dad->child = PTRUNRELOC(np); else dad->next->sibling = PTRUNRELOC(np); dad->next = np; } /* get and store all properties */ prev_propp = &np->properties; prev_name = RELOC(""); for (;;) { pp = (struct property *) mem_start; namep = (char *) (pp + 1); pp->name = PTRUNRELOC(namep); if ((int) call_prom(RELOC("nextprop"), 3, 1, node, prev_name, namep) <= 0) break; mem_start = ALIGN((unsigned long)namep + strlen(namep) + 1); prev_name = namep; valp = (unsigned char *) mem_start; pp->value = PTRUNRELOC(valp); pp->length = (int) call_prom(RELOC("getprop"), 4, 1, node, namep, valp, mem_end - mem_start); if (pp->length < 0) continue; #ifdef MAX_PROPERTY_LENGTH if (pp->length > MAX_PROPERTY_LENGTH) continue; /* ignore this property */ #endif mem_start = ALIGN(mem_start + pp->length); *prev_propp = PTRUNRELOC(pp); prev_propp = &pp->next; } *prev_propp = 0; /* get the node's full name */ l = (int) call_prom(RELOC("package-to-path"), 3, 1, node, (char *) mem_start, mem_end - mem_start); if (l >= 0) { np->full_name = PTRUNRELOC((char *) mem_start); *(char *)(mem_start + l) = 0; mem_start = ALIGN(mem_start + l + 1); } /* do all our children */ child = call_prom(RELOC("child"), 1, 1, node); while (child != (void *)0) { mem_start = inspect_node(child, np, mem_start, mem_end, allnextpp); child = call_prom(RELOC("peer"), 1, 1, child); } return mem_start; } /* * finish_device_tree is called once things are running normally * (i.e. with text and data mapped to the address they were linked at). * It traverses the device tree and fills in the name, type, * {n_}addrs and {n_}intrs fields of each node. */ __init void finish_device_tree(void) { unsigned long mem = (unsigned long) klimit; /* All newworld machines now use the interrupt tree */ struct device_node *np = allnodes; while(np && (_machine == _MACH_Pmac)) { if (get_property(np, "interrupt-parent", 0)) { pmac_newworld = 1; break; } np = np->allnext; } if ((_machine == _MACH_chrp) || (boot_infos == 0 && pmac_newworld)) use_of_interrupt_tree = 1; mem = finish_node(allnodes, mem, NULL, 0, 0); dev_tree_size = mem - (unsigned long) allnodes; klimit = (char *) mem; } /* * early_get_property is used to access the device tree image prepared * by BootX very early on, before the pointers in it have been relocated. */ __init void * early_get_property(unsigned long base, unsigned long node, char *prop) { struct device_node *np = (struct device_node *)(base + node); struct property *pp; for (pp = np->properties; pp != 0; pp = pp->next) { pp = (struct property *) (base + (unsigned long)pp); if (strcmp((char *)((unsigned long)pp->name + base), prop) == 0) { return (void *)((unsigned long)pp->value + base); } } return 0; } __init static unsigned long finish_node(struct device_node *np, unsigned long mem_start, interpret_func *ifunc, int naddrc, int nsizec) { struct device_node *child; int *ip; np->name = get_property(np, "name", 0); np->type = get_property(np, "device_type", 0); /* get the device addresses and interrupts */ if (ifunc != NULL) { mem_start = ifunc(np, mem_start, naddrc, nsizec); } if (use_of_interrupt_tree) { mem_start = finish_node_interrupts(np, mem_start); } /* Look for #address-cells and #size-cells properties. */ ip = (int *) get_property(np, "#address-cells", 0); if (ip != NULL) naddrc = *ip; ip = (int *) get_property(np, "#size-cells", 0); if (ip != NULL) nsizec = *ip; /* the f50 sets the name to 'display' and 'compatible' to what we * expect for the name -- Cort */ if (!strcmp(np->name, "display")) np->name = get_property(np, "compatible", 0); if (!strcmp(np->name, "device-tree")) ifunc = interpret_root_props; else if (np->type == 0) ifunc = NULL; else if (!strcmp(np->type, "pci") || !strcmp(np->type, "vci")) ifunc = interpret_pci_props; else if (!strcmp(np->type, "dbdma")) ifunc = interpret_dbdma_props; else if (!strcmp(np->type, "mac-io") || ifunc == interpret_macio_props) ifunc = interpret_macio_props; else if (!strcmp(np->type, "isa")) ifunc = interpret_isa_props; else if (!((ifunc == interpret_dbdma_props || ifunc == interpret_macio_props) && (!strcmp(np->type, "escc") || !strcmp(np->type, "media-bay")))) ifunc = NULL; /* if we were booted from BootX, convert the full name */ if (boot_infos && strncmp(np->full_name, "Devices:device-tree", 19) == 0) { if (np->full_name[19] == 0) { strcpy(np->full_name, "/"); } else if (np->full_name[19] == ':') { char *p = np->full_name + 19; np->full_name = p; for (; *p; ++p) if (*p == ':') *p = '/'; } } for (child = np->child; child != NULL; child = child->sibling) mem_start = finish_node(child, mem_start, ifunc, naddrc, nsizec); return mem_start; } /* This routine walks the interrupt tree for a given device node and gather * all necessary informations according to the draft interrupt mapping * for CHRP. The current version was only tested on Apple "Core99" machines * and may not handle cascaded controllers correctly. */ __init static unsigned long finish_node_interrupts(struct device_node *np, unsigned long mem_start) { /* Finish this node */ unsigned int *isizep, *asizep, *interrupts, *map, *map_mask, *reg; phandle *parent; struct device_node *node, *parent_node; int l, isize, ipsize, asize, map_size, regpsize; /* Currently, we don't look at all nodes with no "interrupts" property */ interrupts = (unsigned int *)get_property(np, "interrupts", &l); if (interrupts == NULL) return mem_start; ipsize = l>>2; reg = (unsigned int *)get_property(np, "reg", &l); regpsize = l>>2; /* We assume default interrupt cell size is 1 (bugus ?) */ isize = 1; node = np; do { /* We adjust the cell size if the current parent contains an #interrupt-cells * property */ isizep = (unsigned int *)get_property(node, "#interrupt-cells", &l); if (isizep) isize = *isizep; /* We don't do interrupt cascade (ISA) for now, we stop on the first * controller found */ if (get_property(node, "interrupt-controller", &l)) { int i,j; int cvt_irq; /* XXX on chrp, offset interrupt numbers for the 8259 by 0, those for the openpic by 16 */ cvt_irq = _machine == _MACH_chrp && get_property(node, "interrupt-parent", NULL) == 0; np->intrs = (struct interrupt_info *) mem_start; np->n_intrs = ipsize / isize; mem_start += np->n_intrs * sizeof(struct interrupt_info); for (i = 0; i < np->n_intrs; ++i) { np->intrs[i].line = *interrupts++; if (cvt_irq) np->intrs[i].line = openpic_to_irq(np->intrs[i].line); np->intrs[i].sense = 0; if (isize > 1) np->intrs[i].sense = *interrupts++; for (j=2; j<isize; j++) interrupts++; } return mem_start; } /* We lookup for an interrupt-map. This code can only handle one interrupt * per device in the map. We also don't handle #address-cells in the parent * I skip the pci node itself here, may not be necessary but I don't like it's * reg property. */ if (np != node) map = (unsigned int *)get_property(node, "interrupt-map", &l); else map = NULL; if (map && l) { int i, found, temp_isize; map_size = l>>2; map_mask = (unsigned int *)get_property(node, "interrupt-map-mask", &l); asizep = (unsigned int *)get_property(node, "#address-cells", &l); if (asizep && l == sizeof(unsigned int)) asize = *asizep; else asize = 0; found = 0; while(map_size>0 && !found) { found = 1; for (i=0; i<asize; i++) { unsigned int mask = map_mask ? map_mask[i] : 0xffffffff; if (!reg || (i>=regpsize) || ((mask & *map) != (mask & reg[i]))) found = 0; map++; map_size--; } for (i=0; i<isize; i++) { unsigned int mask = map_mask ? map_mask[i+asize] : 0xffffffff; if ((mask & *map) != (mask & interrupts[i])) found = 0; map++; map_size--; } parent = *((phandle *)(map)); map+=1; map_size-=1; parent_node = find_phandle(parent); temp_isize = isize; if (parent_node) { isizep = (unsigned int *)get_property(parent_node, "#interrupt-cells", &l); if (isizep) temp_isize = *isizep; } if (!found) { map += temp_isize; map_size-=temp_isize; } } if (found) { node = parent_node; reg = NULL; regpsize = 0; interrupts = (unsigned int *)map; ipsize = temp_isize*1; continue; } } /* We look for an explicit interrupt-parent. */ parent = (phandle *)get_property(node, "interrupt-parent", &l); if (parent && (l == sizeof(phandle)) && (parent_node = find_phandle(*parent))) { node = parent_node; continue; } /* Default, get real parent */ node = node->parent; } while(node); return mem_start; } /* * When BootX makes a copy of the device tree from the MacOS * Name Registry, it is in the format we use but all of the pointers * are offsets from the start of the tree. * This procedure updates the pointers. */ __init void relocate_nodes(void) { unsigned long base; struct device_node *np; struct property *pp; #define ADDBASE(x) (x = (x)? ((typeof (x))((unsigned long)(x) + base)): 0) base = (unsigned long) boot_infos + boot_infos->deviceTreeOffset; allnodes = (struct device_node *)(base + 4); for (np = allnodes; np != 0; np = np->allnext) { ADDBASE(np->full_name); ADDBASE(np->properties); ADDBASE(np->parent); ADDBASE(np->child); ADDBASE(np->sibling); ADDBASE(np->allnext); for (pp = np->properties; pp != 0; pp = pp->next) { ADDBASE(pp->name); ADDBASE(pp->value); ADDBASE(pp->next); } } } __init static unsigned long interpret_pci_props(struct device_node *np, unsigned long mem_start, int naddrc, int nsizec) { struct address_range *adr; struct pci_reg_property *pci_addrs; int i, l, *ip, ml; struct pci_intr_map *imp; pci_addrs = (struct pci_reg_property *) get_property(np, "assigned-addresses", &l); if (pci_addrs != 0 && l >= sizeof(struct pci_reg_property)) { i = 0; adr = (struct address_range *) mem_start; while ((l -= sizeof(struct pci_reg_property)) >= 0) { /* XXX assumes PCI addresses mapped 1-1 to physical */ adr[i].space = pci_addrs[i].addr.a_hi; adr[i].address = pci_addrs[i].addr.a_lo; adr[i].size = pci_addrs[i].size_lo; ++i; } np->addrs = adr; np->n_addrs = i; mem_start += i * sizeof(struct address_range); } if (use_of_interrupt_tree) return mem_start; /* * If the pci host bridge has an interrupt-map property, * look for our node in it. */ if (np->parent != 0 && pci_addrs != 0 && (imp = (struct pci_intr_map *) get_property(np->parent, "interrupt-map", &ml)) != 0 && (ip = (int *) get_property(np, "interrupts", &l)) != 0) { unsigned int devfn = pci_addrs[0].addr.a_hi & 0xff00; unsigned int cell_size; struct device_node* np2; /* This is hackish, but is only used for BootX booting */ cell_size = sizeof(struct pci_intr_map); np2 = np->parent; while(np2) { if (device_is_compatible(np2, "uni-north")) { cell_size += 4; break; } np2 = np2->parent; } np->n_intrs = 0; np->intrs = (struct interrupt_info *) mem_start; for (i = 0; (ml -= cell_size) >= 0; ++i) { if (imp->addr.a_hi == devfn) { np->intrs[np->n_intrs].line = imp->intr; np->intrs[np->n_intrs].sense = 0; /* FIXME */ ++np->n_intrs; } imp = (struct pci_intr_map *)(((unsigned int)imp) + cell_size); } if (np->n_intrs == 0) np->intrs = 0; mem_start += np->n_intrs * sizeof(struct interrupt_info); return mem_start; } ip = (int *) get_property(np, "AAPL,interrupts", &l); if (ip == 0) ip = (int *) get_property(np, "interrupts", &l); if (ip != 0) { np->intrs = (struct interrupt_info *) mem_start; np->n_intrs = l / sizeof(int); mem_start += np->n_intrs * sizeof(struct interrupt_info); for (i = 0; i < np->n_intrs; ++i) { np->intrs[i].line = *ip++; np->intrs[i].sense = 0; } } return mem_start; } __init static unsigned long interpret_dbdma_props(struct device_node *np, unsigned long mem_start, int naddrc, int nsizec) { struct reg_property *rp; struct address_range *adr; unsigned long base_address; int i, l, *ip; struct device_node *db; base_address = 0; for (db = np->parent; db != NULL; db = db->parent) { if (!strcmp(db->type, "dbdma") && db->n_addrs != 0) { base_address = db->addrs[0].address; break; } } rp = (struct reg_property *) get_property(np, "reg", &l); if (rp != 0 && l >= sizeof(struct reg_property)) { i = 0; adr = (struct address_range *) mem_start; while ((l -= sizeof(struct reg_property)) >= 0) { adr[i].space = 0; adr[i].address = rp[i].address + base_address; adr[i].size = rp[i].size; ++i; } np->addrs = adr; np->n_addrs = i; mem_start += i * sizeof(struct address_range); } if (use_of_interrupt_tree) return mem_start; ip = (int *) get_property(np, "AAPL,interrupts", &l); if (ip == 0) ip = (int *) get_property(np, "interrupts", &l); if (ip != 0) { np->intrs = (struct interrupt_info *) mem_start; np->n_intrs = l / sizeof(int); mem_start += np->n_intrs * sizeof(struct interrupt_info); for (i = 0; i < np->n_intrs; ++i) { np->intrs[i].line = *ip++; np->intrs[i].sense = 0; } } return mem_start; } __init static unsigned long interpret_macio_props(struct device_node *np, unsigned long mem_start, int naddrc, int nsizec) { struct reg_property *rp; struct address_range *adr; unsigned long base_address; int i, l, keylargo, *ip; struct device_node *db; base_address = 0; for (db = np->parent; db != NULL; db = db->parent) { if (!strcmp(db->type, "mac-io") && db->n_addrs != 0) { base_address = db->addrs[0].address; keylargo = device_is_compatible(db, "Keylargo"); break; } } rp = (struct reg_property *) get_property(np, "reg", &l); if (rp != 0 && l >= sizeof(struct reg_property)) { i = 0; adr = (struct address_range *) mem_start; while ((l -= sizeof(struct reg_property)) >= 0) { adr[i].space = 0; adr[i].address = rp[i].address + base_address; adr[i].size = rp[i].size; ++i; } np->addrs = adr; np->n_addrs = i; mem_start += i * sizeof(struct address_range); } if (use_of_interrupt_tree) return mem_start; ip = (int *) get_property(np, "interrupts", &l); if (ip == 0) ip = (int *) get_property(np, "AAPL,interrupts", &l); if (ip != 0) { np->intrs = (struct interrupt_info *) mem_start; if (_machine == _MACH_Pmac) { /* for the iMac */ np->n_intrs = l / sizeof(int); /* Hack for BootX on Core99 */ if (keylargo) np->n_intrs = np->n_intrs/2; for (i = 0; i < np->n_intrs; ++i) { np->intrs[i].line = *ip++; if (keylargo) np->intrs[i].sense = *ip++; else np->intrs[i].sense = 0; } } else { /* CHRP machines */ np->n_intrs = l / (2 * sizeof(int)); for (i = 0; i < np->n_intrs; ++i) { np->intrs[i].line = openpic_to_irq(*ip++); np->intrs[i].sense = *ip++; } } mem_start += np->n_intrs * sizeof(struct interrupt_info); } return mem_start; } __init static unsigned long interpret_isa_props(struct device_node *np, unsigned long mem_start, int naddrc, int nsizec) { struct isa_reg_property *rp; struct address_range *adr; int i, l, *ip; rp = (struct isa_reg_property *) get_property(np, "reg", &l); if (rp != 0 && l >= sizeof(struct isa_reg_property)) { i = 0; adr = (struct address_range *) mem_start; while ((l -= sizeof(struct reg_property)) >= 0) { adr[i].space = rp[i].space; adr[i].address = rp[i].address + (adr[i].space? 0: _ISA_MEM_BASE); adr[i].size = rp[i].size; ++i; } np->addrs = adr; np->n_addrs = i; mem_start += i * sizeof(struct address_range); } if (use_of_interrupt_tree) return mem_start; ip = (int *) get_property(np, "interrupts", &l); if (ip != 0) { np->intrs = (struct interrupt_info *) mem_start; np->n_intrs = l / (2 * sizeof(int)); mem_start += np->n_intrs * sizeof(struct interrupt_info); for (i = 0; i < np->n_intrs; ++i) { np->intrs[i].line = *ip++; np->intrs[i].sense = *ip++; } } return mem_start; } __init static unsigned long interpret_root_props(struct device_node *np, unsigned long mem_start, int naddrc, int nsizec) { struct address_range *adr; int i, l, *ip; unsigned int *rp; int rpsize = (naddrc + nsizec) * sizeof(unsigned int); rp = (unsigned int *) get_property(np, "reg", &l); if (rp != 0 && l >= rpsize) { i = 0; adr = (struct address_range *) mem_start; while ((l -= rpsize) >= 0) { adr[i].space = 0; adr[i].address = rp[naddrc - 1]; adr[i].size = rp[naddrc + nsizec - 1]; ++i; rp += naddrc + nsizec; } np->addrs = adr; np->n_addrs = i; mem_start += i * sizeof(struct address_range); } if (use_of_interrupt_tree) return mem_start; ip = (int *) get_property(np, "AAPL,interrupts", &l); if (ip == 0) ip = (int *) get_property(np, "interrupts", &l); if (ip != 0) { np->intrs = (struct interrupt_info *) mem_start; np->n_intrs = l / sizeof(int); mem_start += np->n_intrs * sizeof(struct interrupt_info); for (i = 0; i < np->n_intrs; ++i) { np->intrs[i].line = *ip++; np->intrs[i].sense = 0; } } return mem_start; } /* * Construct and return a list of the device_nodes with a given name. */ __openfirmware struct device_node * find_devices(const char *name) { struct device_node *head, **prevp, *np; prevp = &head; for (np = allnodes; np != 0; np = np->allnext) { if (np->name != 0 && strcasecmp(np->name, name) == 0) { *prevp = np; prevp = &np->next; } } *prevp = 0; return head; } /* * Construct and return a list of the device_nodes with a given type. */ __openfirmware struct device_node * find_type_devices(const char *type) { struct device_node *head, **prevp, *np; prevp = &head; for (np = allnodes; np != 0; np = np->allnext) { if (np->type != 0 && strcasecmp(np->type, type) == 0) { *prevp = np; prevp = &np->next; } } *prevp = 0; return head; } /* Finds a device node given its PCI bus number, device number * and function number */ __openfirmware struct device_node * find_pci_device_OFnode(unsigned char bus, unsigned char dev_fn) { struct device_node* np; unsigned int *reg; int l; for (np = allnodes; np != 0; np = np->allnext) { int in_macio = 0; struct device_node* parent = np->parent; while(parent) { char *pname = (char *)get_property(parent, "name", &l); if (pname && strcmp(pname, "mac-io") == 0) { in_macio = 1; break; } parent = parent->parent; } if (in_macio) continue; reg = (unsigned int *) get_property(np, "reg", &l); if (reg == 0 || l < sizeof(struct reg_property)) continue; if (((reg[0] >> 8) & 0xff) == dev_fn && ((reg[0] >> 16) & 0xff) == bus) break; } return np; } /* * Returns all nodes linked together */ __openfirmware struct device_node * find_all_nodes(void) { struct device_node *head, **prevp, *np; prevp = &head; for (np = allnodes; np != 0; np = np->allnext) { *prevp = np; prevp = &np->next; } *prevp = 0; return head; } /* Checks if the given "compat" string matches one of the strings in * the device's "compatible" property */ __openfirmware int device_is_compatible(struct device_node *device, const char *compat) { const char* cp; int cplen, l; cp = (char *) get_property(device, "compatible", &cplen); if (cp == NULL) return 0; while (cplen > 0) { if (strncasecmp(cp, compat, strlen(compat)) == 0) return 1; l = strlen(cp) + 1; cp += l; cplen -= l; } return 0; } /* * Indicates whether the root node has a given value in its * compatible property. */ __openfirmware int machine_is_compatible(const char *compat) { struct device_node *root; root = find_path_device("/"); if (root == 0) return 0; return device_is_compatible(root, compat); } /* * Construct and return a list of the device_nodes with a given type * and compatible property. */ __openfirmware struct device_node * find_compatible_devices(const char *type, const char *compat) { struct device_node *head, **prevp, *np; prevp = &head; for (np = allnodes; np != 0; np = np->allnext) { if (type != NULL && !(np->type != 0 && strcasecmp(np->type, type) == 0)) continue; if (device_is_compatible(np, compat)) { *prevp = np; prevp = &np->next; } } *prevp = 0; return head; } /* * Find the device_node with a given full_name. */ __openfirmware struct device_node * find_path_device(const char *path) { struct device_node *np; for (np = allnodes; np != 0; np = np->allnext) if (np->full_name != 0 && strcasecmp(np->full_name, path) == 0) return np; return NULL; } /* * Find the device_node with a given phandle. */ __openfirmware struct device_node * find_phandle(phandle ph) { struct device_node *np; for (np = allnodes; np != 0; np = np->allnext) if (np->node == ph) return np; return NULL; } /* * Find a property with a given name for a given node * and return the value. */ __openfirmware unsigned char * get_property(struct device_node *np, const char *name, int *lenp) { struct property *pp; for (pp = np->properties; pp != 0; pp = pp->next) if (strcmp(pp->name, name) == 0) { if (lenp != 0) *lenp = pp->length; return pp->value; } return 0; } #if 0 __openfirmware void print_properties(struct device_node *np) { struct property *pp; char *cp; int i, n; for (pp = np->properties; pp != 0; pp = pp->next) { printk(KERN_INFO "%s", pp->name); for (i = strlen(pp->name); i < 16; ++i) printk(" "); cp = (char *) pp->value; for (i = pp->length; i > 0; --i, ++cp) if ((i > 1 && (*cp < 0x20 || *cp > 0x7e)) || (i == 1 && *cp != 0)) break; if (i == 0 && pp->length > 1) { /* looks like a string */ printk(" %s\n", (char *) pp->value); } else { /* dump it in hex */ n = pp->length; if (n > 64) n = 64; if (pp->length % 4 == 0) { unsigned int *p = (unsigned int *) pp->value; n /= 4; for (i = 0; i < n; ++i) { if (i != 0 && (i % 4) == 0) printk("\n "); printk(" %08x", *p++); } } else { unsigned char *bp = pp->value; for (i = 0; i < n; ++i) { if (i != 0 && (i % 16) == 0) printk("\n "); printk(" %02x", *bp++); } } printk("\n"); if (pp->length > 64) printk(" ... (length = %d)\n", pp->length); } } } #endif spinlock_t rtas_lock = SPIN_LOCK_UNLOCKED; /* this can be called after setup -- Cort */ __openfirmware int call_rtas(const char *service, int nargs, int nret, unsigned long *outputs, ...) { va_list list; int i; unsigned long s; struct device_node *rtas; int *tokp; union { unsigned long words[16]; double align; } u; rtas = find_devices("rtas"); if (rtas == NULL) return -1; tokp = (int *) get_property(rtas, service, NULL); if (tokp == NULL) { printk(KERN_ERR "No RTAS service called %s\n", service); return -1; } u.words[0] = *tokp; u.words[1] = nargs; u.words[2] = nret; va_start(list, outputs); for (i = 0; i < nargs; ++i) u.words[i+3] = va_arg(list, unsigned long); va_end(list); spin_lock_irqsave(&rtas_lock, s); enter_rtas((void *)__pa(&u)); spin_unlock_irqrestore(&rtas_lock, s); if (nret > 1 && outputs != NULL) for (i = 0; i < nret-1; ++i) outputs[i] = u.words[i+nargs+4]; return u.words[nargs+3]; } __init void abort() { #ifdef CONFIG_XMON xmon(NULL); #endif for (;;) prom_exit(); } #ifdef CONFIG_BOOTX_TEXT /* Here's a small text engine to use during early boot or for debugging purposes * * todo: * * - build some kind of vgacon with it to enable early printk * - move to a separate file * - add a few video driver hooks to keep in sync with display * changes. */ void map_bootx_text(void) { unsigned long base, offset, size; if (disp_bi == 0) return; base = ((unsigned long) disp_bi->dispDeviceBase) & 0xFFFFF000UL; offset = ((unsigned long) disp_bi->dispDeviceBase) - base; size = disp_bi->dispDeviceRowBytes * disp_bi->dispDeviceRect[3] + offset + disp_bi->dispDeviceRect[0]; disp_bi->logicalDisplayBase = ioremap(base, size); if (disp_bi->logicalDisplayBase == 0) return; disp_bi->logicalDisplayBase += offset; bootx_text_mapped = 1; } /* Calc the base address of a given point (x,y) */ __pmac static unsigned char * calc_base(boot_infos_t *bi, int x, int y) { unsigned char *base; base = bi->logicalDisplayBase; if (base == 0) base = bi->dispDeviceBase; base += (x + bi->dispDeviceRect[0]) * (bi->dispDeviceDepth >> 3); base += (y + bi->dispDeviceRect[1]) * bi->dispDeviceRowBytes; return base; } /* Adjust the display to a new resolution */ void bootx_update_display(unsigned long phys, int width, int height, int depth, int pitch) { if (disp_bi == 0) return; /* check it's the same frame buffer (within 16MB) */ if ((phys ^ (unsigned long)disp_bi->dispDeviceBase) & 0xff000000) return; disp_bi->dispDeviceBase = (__u8 *) phys; disp_bi->dispDeviceRect[0] = 0; disp_bi->dispDeviceRect[1] = 0; disp_bi->dispDeviceRect[2] = width; disp_bi->dispDeviceRect[3] = height; disp_bi->dispDeviceDepth = depth; disp_bi->dispDeviceRowBytes = pitch; if (bootx_text_mapped) { iounmap(disp_bi->logicalDisplayBase); bootx_text_mapped = 0; } map_bootx_text(); g_loc_X = 0; g_loc_Y = 0; g_max_loc_X = width / 8; g_max_loc_Y = height / 16; } __pmac static void clearscreen(void) { unsigned long offset = reloc_offset(); boot_infos_t* bi = PTRRELOC(RELOC(disp_bi)); unsigned long *base = (unsigned long *)calc_base(bi, 0, 0); unsigned long width = ((bi->dispDeviceRect[2] - bi->dispDeviceRect[0]) * (bi->dispDeviceDepth >> 3)) >> 2; int i,j; for (i=0; i<(bi->dispDeviceRect[3] - bi->dispDeviceRect[1]); i++) { unsigned long *ptr = base; for(j=width; j; --j) *(ptr++) = 0; base += (bi->dispDeviceRowBytes >> 2); } } __inline__ void dcbst(const void* addr) { __asm__ __volatile__ ("dcbst 0,%0" :: "r" (addr)); } __pmac static void flushscreen(void) { unsigned long offset = reloc_offset(); boot_infos_t* bi = PTRRELOC(RELOC(disp_bi)); unsigned long *base = (unsigned long *)calc_base(bi, 0, 0); unsigned long width = ((bi->dispDeviceRect[2] - bi->dispDeviceRect[0]) * (bi->dispDeviceDepth >> 3)) >> 2; int i,j; for (i=0; i<(bi->dispDeviceRect[3] - bi->dispDeviceRect[1]); i++) { unsigned long *ptr = base; for(j=width; j>0; j-=8) { dcbst(ptr); ptr += 8; } base += (bi->dispDeviceRowBytes >> 2); } } #ifndef NO_SCROLL __pmac static void scrollscreen(void) { unsigned long offset = reloc_offset(); boot_infos_t* bi = PTRRELOC(RELOC(disp_bi)); unsigned long *src = (unsigned long *)calc_base(bi,0,16); unsigned long *dst = (unsigned long *)calc_base(bi,0,0); unsigned long width = ((bi->dispDeviceRect[2] - bi->dispDeviceRect[0]) * (bi->dispDeviceDepth >> 3)) >> 2; int i,j; #ifdef CONFIG_ADB_PMU pmu_suspend(); /* PMU will not shut us down ! */ #endif for (i=0; i<(bi->dispDeviceRect[3] - bi->dispDeviceRect[1] - 16); i++) { unsigned long *src_ptr = src; unsigned long *dst_ptr = dst; for(j=width; j; --j) *(dst_ptr++) = *(src_ptr++); src += (bi->dispDeviceRowBytes >> 2); dst += (bi->dispDeviceRowBytes >> 2); } for (i=0; i<16; i++) { unsigned long *dst_ptr = dst; for(j=width; j; --j) *(dst_ptr++) = 0; dst += (bi->dispDeviceRowBytes >> 2); } #ifdef CONFIG_ADB_PMU pmu_resume(); /* PMU will not shut us down ! */ #endif } #endif /* ndef NO_SCROLL */ __pmac void prom_drawchar(char c) { unsigned long offset = reloc_offset(); int cline = 0, x; if (!RELOC(bootx_text_mapped)) return; switch (c) { case '\b': if (RELOC(g_loc_X) > 0) --RELOC(g_loc_X); break; case '\t': RELOC(g_loc_X) = (RELOC(g_loc_X) & -8) + 8; break; case '\r': RELOC(g_loc_X) = 0; break; case '\n': RELOC(g_loc_X) = 0; RELOC(g_loc_Y)++; cline = 1; break; default: draw_byte(c, RELOC(g_loc_X)++, RELOC(g_loc_Y)); } if (RELOC(g_loc_X) >= RELOC(g_max_loc_X)) { RELOC(g_loc_X) = 0; RELOC(g_loc_Y)++; cline = 1; } #ifndef NO_SCROLL while (RELOC(g_loc_Y) >= RELOC(g_max_loc_Y)) { scrollscreen(); RELOC(g_loc_Y)--; } #else /* wrap around from bottom to top of screen so we don't waste time scrolling each line. -- paulus. */ if (RELOC(g_loc_Y) >= RELOC(g_max_loc_Y)) RELOC(g_loc_Y) = 0; if (cline) { for (x = 0; x < RELOC(g_max_loc_X); ++x) draw_byte(' ', x, RELOC(g_loc_Y)); } #endif } __pmac void prom_drawstring(const char *c) { unsigned long offset = reloc_offset(); if (!RELOC(bootx_text_mapped)) return; while (*c) prom_drawchar(*c++); } __pmac void prom_drawhex(unsigned long v) { static char hex_table[] = "0123456789abcdef"; unsigned long offset = reloc_offset(); if (!RELOC(bootx_text_mapped)) return; prom_drawchar(RELOC(hex_table)[(v >> 28) & 0x0000000FUL]); prom_drawchar(RELOC(hex_table)[(v >> 24) & 0x0000000FUL]); prom_drawchar(RELOC(hex_table)[(v >> 20) & 0x0000000FUL]); prom_drawchar(RELOC(hex_table)[(v >> 16) & 0x0000000FUL]); prom_drawchar(RELOC(hex_table)[(v >> 12) & 0x0000000FUL]); prom_drawchar(RELOC(hex_table)[(v >> 8) & 0x0000000FUL]); prom_drawchar(RELOC(hex_table)[(v >> 4) & 0x0000000FUL]); prom_drawchar(RELOC(hex_table)[(v >> 0) & 0x0000000FUL]); } __pmac static void draw_byte(unsigned char c, long locX, long locY) { unsigned long offset = reloc_offset(); boot_infos_t* bi = PTRRELOC(RELOC(disp_bi)); unsigned char *base = calc_base(bi, locX << 3, locY << 4); unsigned char *font = &RELOC(vga_font)[((unsigned long)c) * 16]; int rb = bi->dispDeviceRowBytes; switch(bi->dispDeviceDepth) { case 32: draw_byte_32(font, (unsigned long *)base, rb); break; case 16: draw_byte_16(font, (unsigned long *)base, rb); break; case 8: draw_byte_8(font, (unsigned long *)base, rb); break; default: break; } } __pmac static unsigned long expand_bits_8[16] = { 0x00000000, 0x000000ff, 0x0000ff00, 0x0000ffff, 0x00ff0000, 0x00ff00ff, 0x00ffff00, 0x00ffffff, 0xff000000, 0xff0000ff, 0xff00ff00, 0xff00ffff, 0xffff0000, 0xffff00ff, 0xffffff00, 0xffffffff }; __pmac static unsigned long expand_bits_16[4] = { 0x00000000, 0x0000ffff, 0xffff0000, 0xffffffff }; __pmac static void draw_byte_32(unsigned char *font, unsigned long *base, int rb) { int l, bits; int fg = 0xFFFFFFFFUL; int bg = 0x00000000UL; for (l = 0; l < 16; ++l) { bits = *font++; base[0] = (-(bits >> 7) & fg) ^ bg; base[1] = (-((bits >> 6) & 1) & fg) ^ bg; base[2] = (-((bits >> 5) & 1) & fg) ^ bg; base[3] = (-((bits >> 4) & 1) & fg) ^ bg; base[4] = (-((bits >> 3) & 1) & fg) ^ bg; base[5] = (-((bits >> 2) & 1) & fg) ^ bg; base[6] = (-((bits >> 1) & 1) & fg) ^ bg; base[7] = (-(bits & 1) & fg) ^ bg; base = (unsigned long *) ((char *)base + rb); } } __pmac static void draw_byte_16(unsigned char *font, unsigned long *base, int rb) { int l, bits; int fg = 0xFFFFFFFFUL; int bg = 0x00000000UL; unsigned long offset = reloc_offset(); unsigned long *eb = RELOC(expand_bits_16); for (l = 0; l < 16; ++l) { bits = *font++; base[0] = (eb[bits >> 6] & fg) ^ bg; base[1] = (eb[(bits >> 4) & 3] & fg) ^ bg; base[2] = (eb[(bits >> 2) & 3] & fg) ^ bg; base[3] = (eb[bits & 3] & fg) ^ bg; base = (unsigned long *) ((char *)base + rb); } } __pmac static void draw_byte_8(unsigned char *font, unsigned long *base, int rb) { int l, bits; int fg = 0x0F0F0F0FUL; int bg = 0x00000000UL; unsigned long offset = reloc_offset(); unsigned long *eb = RELOC(expand_bits_8); for (l = 0; l < 16; ++l) { bits = *font++; base[0] = (eb[bits >> 4] & fg) ^ bg; base[1] = (eb[bits & 0xf] & fg) ^ bg; base = (unsigned long *) ((char *)base + rb); } } __pmac static unsigned char vga_font[cmapsz] = { 0x00, 0x00, 0x00, 0x00, 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