/* * $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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_FB #include #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_BATL = 0; unsigned long disp_BATU = 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, 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 */ /* * 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_rtas, 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_rtas = call_prom(RELOC("finddevice"), 1, 1, RELOC("/rtas")); if (prom_rtas != (void *) -1) { int i, nargs; struct prom_args prom_args; 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("...")); nargs = 3; prom_args.service = RELOC("call-method"); prom_args.nargs = nargs; 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); if (prom_args.args[nargs] != 0) i = 0; else i = (int)prom_args.args[nargs+1]; RELOC(rtas_entry) = i; if ((RELOC(rtas_entry) == -1) || (RELOC(rtas_entry) == 0)) prom_print(RELOC(" failed\n")); else prom_print(RELOC(" done\n")); } #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) ")); 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); offset = reloc_offset(); phys = offset + KERNELBASE; } #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 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_BATH and disp_BATL. 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_BATU) = addr | (BL_16M<<2) | 2; RELOC(disp_BATL) = addr | (_PAGE_NO_CACHE | _PAGE_GUARDED | BPP_RW); } else { /* 601 */ addr &= 0xFF800000UL; RELOC(disp_BATU) = addr | (_PAGE_NO_CACHE | PP_RWXX) | 4; RELOC(disp_BATL) = 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(); prom_print(RELOC("Initializing fake screen\n")); call_prom(RELOC("getprop"), 4, 1, dp, RELOC("width"), &width, sizeof(width)); call_prom(RELOC("getprop"), 4, 1, dp, RELOC("height"), &height, sizeof(height)); call_prom(RELOC("getprop"), 4, 1, dp, RELOC("depth"), &depth, sizeof(depth)); pitch = width * ((depth + 7) / 8); call_prom(RELOC("getprop"), 4, 1, dp, RELOC("linebytes"), &pitch, sizeof(pitch)); address = 0; if (pitch == 1) { address = 0xfa000000; pitch = 0x1000; /* for strange IBM display */ } call_prom(RELOC("getprop"), 4, 1, dp, RELOC("address"), &address, sizeof(address)); if (address == 0) { prom_print(RELOC("Failed to get address\n")); return; } #if 0 /* kludge for valkyrie */ if (strcmp(dp->name, "valkyrie") == 0) address += 0x1000; #endif 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; 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++; np->intrs[i].sense = 0; if (isize > 1) np->intrs[i].sense = *interrupts++; for (j=2; j>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=regpsize) || ((mask & *map) != (mask & reg[i]))) found = 0; map++; map_size--; } for (i=0; iparent; } 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. */ __init 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) + 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; } __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; 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); } } #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, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x81, 0xa5, 0x81, 0x81, 0xbd, 0x99, 0x81, 0x81, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xff, 0xdb, 0xff, 0xff, 0xc3, 0xe7, 0xff, 0xff, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6c, 0xfe, 0xfe, 0xfe, 0xfe, 0x7c, 0x38, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x38, 0x7c, 0xfe, 0x7c, 0x38, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c, 0x3c, 0xe7, 0xe7, 0xe7, 0x18, 0x18, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c, 0x7e, 0xff, 0xff, 0x7e, 0x18, 0x18, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c, 0x3c, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe7, 0xc3, 0xc3, 0xe7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x66, 0x42, 0x42, 0x66, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc3, 0x99, 0xbd, 0xbd, 0x99, 0xc3, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x1e, 0x0e, 0x1a, 0x32, 0x78, 0xcc, 0xcc, 0xcc, 0xcc, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x66, 0x66, 0x66, 0x66, 0x3c, 0x18, 0x7e, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x33, 0x3f, 0x30, 0x30, 0x30, 0x30, 0x70, 0xf0, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0x63, 0x7f, 0x63, 0x63, 0x63, 0x63, 0x67, 0xe7, 0xe6, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0xdb, 0x3c, 0xe7, 0x3c, 0xdb, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfe, 0xf8, 0xf0, 0xe0, 0xc0, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x06, 0x0e, 0x1e, 0x3e, 0xfe, 0x3e, 0x1e, 0x0e, 0x06, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c, 0x7e, 0x18, 0x18, 0x18, 0x7e, 0x3c, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x66, 0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xdb, 0xdb, 0xdb, 0x7b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7c, 0xc6, 0x60, 0x38, 0x6c, 0xc6, 0xc6, 0x6c, 0x38, 0x0c, 0xc6, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0xfe, 0xfe, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c, 0x7e, 0x18, 0x18, 0x18, 0x7e, 0x3c, 0x18, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c, 0x7e, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x7e, 0x3c, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x0c, 0xfe, 0x0c, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x60, 0xfe, 0x60, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xc0, 0xc0, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24, 0x66, 0xff, 0x66, 0x24, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x38, 0x38, 0x7c, 0x7c, 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