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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 | /* * Big Endian PROM code for SNI RM machines * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org) * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de) */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/string.h> #include <linux/console.h> #include <asm/addrspace.h> #include <asm/sni.h> #include <asm/mipsprom.h> #include <asm/mipsregs.h> #include <asm/bootinfo.h> /* special SNI prom calls */ /* * This does not exist in all proms - SINIX compares * the prom env variable "version" against "2.0008" * or greater. If lesser it tries to probe interesting * registers */ #define PROM_GET_MEMCONF 58 #define PROM_GET_HWCONF 61 #define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000) #define PROM_ENTRY(x) (PROM_VEC + (x)) #define ___prom_putchar ((int *(*)(int))PROM_ENTRY(PROM_PUTCHAR)) #define ___prom_getenv ((char *(*)(char *))PROM_ENTRY(PROM_GETENV)) #define ___prom_get_memconf ((void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF)) #define ___prom_get_hwconf ((u32 (*)(void))PROM_ENTRY(PROM_GET_HWCONF)) #ifdef CONFIG_64BIT static u8 o32_stk[16384]; #define O32_STK &o32_stk[sizeof(o32_stk)] #define __PROM_O32(fun, arg) fun arg __asm__(#fun); \ __asm__(#fun " = call_o32") int __PROM_O32(__prom_putchar, (int *(*)(int), void *, int)); char *__PROM_O32(__prom_getenv, (char *(*)(char *), void *, char *)); void __PROM_O32(__prom_get_memconf, (void (*)(void *), void *, void *)); u32 __PROM_O32(__prom_get_hwconf, (u32 (*)(void), void *)); #define _prom_putchar(x) __prom_putchar(___prom_putchar, O32_STK, x) #define _prom_getenv(x) __prom_getenv(___prom_getenv, O32_STK, x) #define _prom_get_memconf(x) __prom_get_memconf(___prom_get_memconf, O32_STK, x) #define _prom_get_hwconf() __prom_get_hwconf(___prom_get_hwconf, O32_STK) #else #define _prom_putchar(x) ___prom_putchar(x) #define _prom_getenv(x) ___prom_getenv(x) #define _prom_get_memconf(x) ___prom_get_memconf(x) #define _prom_get_hwconf(x) ___prom_get_hwconf(x) #endif void prom_putchar(char c) { _prom_putchar(c); } char *prom_getenv(char *s) { return _prom_getenv(s); } void *prom_get_hwconf(void) { u32 hwconf = _prom_get_hwconf(); if (hwconf == 0xffffffff) return NULL; return (void *)CKSEG1ADDR(hwconf); } void __init prom_free_prom_memory(void) { } /* * /proc/cpuinfo system type * */ char *system_type = "Unknown"; const char *get_system_type(void) { return system_type; } static void __init sni_mem_init(void) { int i, memsize; struct membank { u32 size; u32 base; u32 size2; u32 pad1; u32 pad2; } memconf[8]; int brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE; /* MemSIZE from prom in 16MByte chunks */ memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16; pr_debug("IDProm memsize: %u MByte\n", memsize); /* get memory bank layout from prom */ _prom_get_memconf(&memconf); pr_debug("prom_get_mem_conf memory configuration:\n"); for (i = 0; i < 8 && memconf[i].size; i++) { if (brd_type == SNI_BRD_PCI_TOWER || brd_type == SNI_BRD_PCI_TOWER_CPLUS) { if (memconf[i].base >= 0x20000000 && memconf[i].base < 0x30000000) memconf[i].base -= 0x20000000; } pr_debug("Bank%d: %08x @ %08x\n", i, memconf[i].size, memconf[i].base); add_memory_region(memconf[i].base, memconf[i].size, BOOT_MEM_RAM); } } void __init prom_init(void) { int argc = fw_arg0; u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1); int i; sni_mem_init(); /* copy prom cmdline parameters to kernel cmdline */ for (i = 1; i < argc; i++) { strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i])); if (i < (argc - 1)) strcat(arcs_cmdline, " "); } } |