Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Big Endian PROM code for SNI RM machines |
| 3 | * |
| 4 | * This file is subject to the terms and conditions of the GNU General Public |
| 5 | * License. See the file "COPYING" in the main directory of this archive |
| 6 | * for more details. |
| 7 | * |
| 8 | * Copyright (C) 2005-2006 Florian Lohoff (flo@rfc822.org) |
| 9 | * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de) |
| 10 | */ |
| 11 | |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 12 | #define DEBUG |
| 13 | |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 14 | #include <linux/kernel.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/string.h> |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 17 | #include <linux/console.h> |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 18 | |
| 19 | #include <asm/addrspace.h> |
| 20 | #include <asm/sni.h> |
| 21 | #include <asm/mipsprom.h> |
Thomas Bogendoerfer | cbe7b45 | 2007-07-24 03:49:27 +0200 | [diff] [blame] | 22 | #include <asm/mipsregs.h> |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 23 | #include <asm/bootinfo.h> |
| 24 | |
| 25 | /* special SNI prom calls */ |
| 26 | /* |
| 27 | * This does not exist in all proms - SINIX compares |
| 28 | * the prom env variable "version" against "2.0008" |
| 29 | * or greater. If lesser it tries to probe interesting |
| 30 | * registers |
| 31 | */ |
| 32 | #define PROM_GET_MEMCONF 58 |
| 33 | |
| 34 | #define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000) |
| 35 | #define PROM_ENTRY(x) (PROM_VEC + (x)) |
| 36 | |
| 37 | |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 38 | static int *(*__prom_putchar)(int) = (int *(*)(int))PROM_ENTRY(PROM_PUTCHAR); |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 39 | |
| 40 | void prom_putchar(char c) |
| 41 | { |
| 42 | __prom_putchar(c); |
| 43 | } |
| 44 | |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 45 | static char *(*__prom_getenv)(char *) = (char *(*)(char *))PROM_ENTRY(PROM_GETENV); |
| 46 | static void (*__prom_get_memconf)(void *) = (void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF); |
| 47 | |
| 48 | char *prom_getenv (char *s) |
| 49 | { |
| 50 | return __prom_getenv(s); |
| 51 | } |
| 52 | |
Atsushi Nemoto | c44e8d5 | 2006-12-30 00:43:59 +0900 | [diff] [blame] | 53 | void __init prom_free_prom_memory(void) |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 54 | { |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 55 | } |
| 56 | |
| 57 | /* |
| 58 | * /proc/cpuinfo system type |
| 59 | * |
| 60 | */ |
| 61 | static const char *systype = "Unknown"; |
| 62 | const char *get_system_type(void) |
| 63 | { |
| 64 | return systype; |
| 65 | } |
| 66 | |
| 67 | #define SNI_IDPROM_BASE 0xbff00000 |
| 68 | #define SNI_IDPROM_MEMSIZE (SNI_IDPROM_BASE+0x28) /* Memsize in 16MB quantities */ |
| 69 | #define SNI_IDPROM_BRDTYPE (SNI_IDPROM_BASE+0x29) /* Board Type */ |
| 70 | #define SNI_IDPROM_CPUTYPE (SNI_IDPROM_BASE+0x30) /* CPU Type */ |
| 71 | |
| 72 | #define SNI_IDPROM_SIZE 0x1000 |
| 73 | |
| 74 | #ifdef DEBUG |
Thomas Bogendoerfer | cbe7b45 | 2007-07-24 03:49:27 +0200 | [diff] [blame] | 75 | static void __init sni_idprom_dump(void) |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 76 | { |
| 77 | int i; |
| 78 | |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 79 | pr_debug("SNI IDProm dump:\n"); |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 80 | for (i = 0; i < 256; i++) { |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 81 | if (i%16 == 0) |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 82 | pr_debug("%04x ", i); |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 83 | |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 84 | printk("%02x ", *(unsigned char *) (SNI_IDPROM_BASE + i)); |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 85 | |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 86 | if (i % 16 == 15) |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 87 | printk("\n"); |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 88 | } |
| 89 | } |
| 90 | #endif |
| 91 | |
Thomas Bogendoerfer | cbe7b45 | 2007-07-24 03:49:27 +0200 | [diff] [blame] | 92 | static void __init sni_mem_init(void ) |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 93 | { |
| 94 | int i, memsize; |
| 95 | struct membank { |
| 96 | u32 size; |
| 97 | u32 base; |
| 98 | u32 size2; |
| 99 | u32 pad1; |
| 100 | u32 pad2; |
| 101 | } memconf[8]; |
| 102 | |
| 103 | /* MemSIZE from prom in 16MByte chunks */ |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 104 | memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16; |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 105 | |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 106 | pr_debug("IDProm memsize: %lu MByte\n", memsize); |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 107 | |
| 108 | /* get memory bank layout from prom */ |
| 109 | __prom_get_memconf(&memconf); |
| 110 | |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 111 | pr_debug("prom_get_mem_conf memory configuration:\n"); |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 112 | for (i = 0;i < 8 && memconf[i].size; i++) { |
| 113 | if (sni_brd_type == SNI_BRD_PCI_TOWER || |
| 114 | sni_brd_type == SNI_BRD_PCI_TOWER_CPLUS) { |
| 115 | if (memconf[i].base >= 0x20000000 && |
| 116 | memconf[i].base < 0x30000000) { |
| 117 | memconf[i].base -= 0x20000000; |
| 118 | } |
| 119 | } |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 120 | pr_debug("Bank%d: %08x @ %08x\n", i, |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 121 | memconf[i].size, memconf[i].base); |
| 122 | add_memory_region(memconf[i].base, memconf[i].size, BOOT_MEM_RAM); |
| 123 | } |
| 124 | } |
| 125 | |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 126 | static void __init sni_console_setup(void) |
| 127 | { |
| 128 | char *ctype; |
| 129 | char *cdev; |
| 130 | char *baud; |
| 131 | int port; |
| 132 | static char options[8]; |
| 133 | |
| 134 | cdev = prom_getenv ("console_dev"); |
| 135 | if (strncmp (cdev, "tty", 3) == 0) { |
| 136 | ctype = prom_getenv ("console"); |
| 137 | switch (*ctype) { |
| 138 | default: |
| 139 | case 'l': |
| 140 | port = 0; |
| 141 | baud = prom_getenv("lbaud"); |
| 142 | break; |
| 143 | case 'r': |
| 144 | port = 1; |
| 145 | baud = prom_getenv("rbaud"); |
| 146 | break; |
| 147 | } |
| 148 | if (baud) |
| 149 | strcpy(options, baud); |
Thomas Bogendoerfer | 06cf558 | 2007-06-20 23:36:47 +0200 | [diff] [blame] | 150 | if (strncmp (cdev, "tty552", 6) == 0) |
| 151 | add_preferred_console("ttyS", port, baud ? options : NULL); |
| 152 | else |
| 153 | add_preferred_console("ttySC", port, baud ? options : NULL); |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 154 | } |
| 155 | } |
| 156 | |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 157 | void __init prom_init(void) |
| 158 | { |
| 159 | int argc = fw_arg0; |
| 160 | char **argv = (void *)fw_arg1; |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 161 | int i; |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 162 | int cputype; |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 163 | |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 164 | sni_brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE; |
| 165 | cputype = *(unsigned char *)SNI_IDPROM_CPUTYPE; |
| 166 | switch (sni_brd_type) { |
| 167 | case SNI_BRD_TOWER_OASIC: |
| 168 | switch (cputype) { |
| 169 | case SNI_CPU_M8030: |
| 170 | systype = "RM400-330"; |
| 171 | break; |
| 172 | case SNI_CPU_M8031: |
| 173 | systype = "RM400-430"; |
| 174 | break; |
| 175 | case SNI_CPU_M8037: |
| 176 | systype = "RM400-530"; |
| 177 | break; |
| 178 | case SNI_CPU_M8034: |
| 179 | systype = "RM400-730"; |
| 180 | break; |
| 181 | default: |
| 182 | systype = "RM400-xxx"; |
| 183 | break; |
| 184 | } |
| 185 | break; |
| 186 | case SNI_BRD_MINITOWER: |
| 187 | switch (cputype) { |
| 188 | case SNI_CPU_M8021: |
| 189 | case SNI_CPU_M8043: |
| 190 | systype = "RM400-120"; |
| 191 | break; |
| 192 | case SNI_CPU_M8040: |
| 193 | systype = "RM400-220"; |
| 194 | break; |
| 195 | case SNI_CPU_M8053: |
| 196 | systype = "RM400-225"; |
| 197 | break; |
| 198 | case SNI_CPU_M8050: |
| 199 | systype = "RM400-420"; |
| 200 | break; |
| 201 | default: |
| 202 | systype = "RM400-xxx"; |
| 203 | break; |
| 204 | } |
| 205 | break; |
| 206 | case SNI_BRD_PCI_TOWER: |
| 207 | systype = "RM400-Cxx"; |
| 208 | break; |
| 209 | case SNI_BRD_RM200: |
| 210 | systype = "RM200-xxx"; |
| 211 | break; |
| 212 | case SNI_BRD_PCI_MTOWER: |
| 213 | systype = "RM300-Cxx"; |
| 214 | break; |
| 215 | case SNI_BRD_PCI_DESKTOP: |
| 216 | switch (read_c0_prid() & 0xff00) { |
| 217 | case PRID_IMP_R4600: |
| 218 | case PRID_IMP_R4700: |
| 219 | systype = "RM200-C20"; |
| 220 | break; |
| 221 | case PRID_IMP_R5000: |
| 222 | systype = "RM200-C40"; |
| 223 | break; |
| 224 | default: |
| 225 | systype = "RM200-Cxx"; |
| 226 | break; |
| 227 | } |
| 228 | break; |
| 229 | case SNI_BRD_PCI_TOWER_CPLUS: |
| 230 | systype = "RM400-Exx"; |
| 231 | break; |
| 232 | case SNI_BRD_PCI_MTOWER_CPLUS: |
| 233 | systype = "RM300-Exx"; |
| 234 | break; |
| 235 | } |
Ralf Baechle | 36a8853 | 2007-03-01 11:56:43 +0000 | [diff] [blame] | 236 | pr_debug("Found SNI brdtype %02x name %s\n", sni_brd_type,systype); |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 237 | |
| 238 | #ifdef DEBUG |
| 239 | sni_idprom_dump(); |
| 240 | #endif |
| 241 | sni_mem_init(); |
Thomas Bogendoerfer | c066a32 | 2006-12-28 18:22:32 +0100 | [diff] [blame] | 242 | sni_console_setup(); |
Thomas Bogendoerfer | 4a0312fc | 2006-06-13 13:59:01 +0200 | [diff] [blame] | 243 | |
| 244 | /* copy prom cmdline parameters to kernel cmdline */ |
| 245 | for (i = 1; i < argc; i++) { |
| 246 | strcat(arcs_cmdline, argv[i]); |
| 247 | if (i < (argc - 1)) |
| 248 | strcat(arcs_cmdline, " "); |
| 249 | } |
| 250 | } |
| 251 | |