1 /* 2 * Global definition of all the bootwrapper operations. 3 * 4 * Author: Mark A. Greer <mgreer@mvista.com> 5 * 6 * 2006 (c) MontaVista Software, Inc. This file is licensed under 7 * the terms of the GNU General Public License version 2. This program 8 * is licensed "as is" without any warranty of any kind, whether express 9 * or implied. 10 */ 11 #ifndef _PPC_BOOT_OPS_H_ 12 #define _PPC_BOOT_OPS_H_ 13 14 #include <stddef.h> 15 #include "types.h" 16 #include "string.h" 17 18 #define BOOT_COMMAND_LINE_SIZE 2048 19 #define MAX_PATH_LEN 256 20 #define MAX_PROP_LEN 256 /* What should this be? */ 21 22 typedef void (*kernel_entry_t)(unsigned long r3, unsigned long r4, void *r5); 23 24 /* Platform specific operations */ 25 struct platform_ops { 26 void (*fixups)(void); 27 void (*image_hdr)(const void *); 28 void * (*malloc)(unsigned long size); 29 void (*free)(void *ptr); 30 void * (*realloc)(void *ptr, unsigned long size); 31 void (*exit)(void); 32 void * (*vmlinux_alloc)(unsigned long size); 33 void (*kentry)(unsigned long fdt_addr, void *vmlinux_addr); 34 }; 35 extern struct platform_ops platform_ops; 36 37 /* Device Tree operations */ 38 struct dt_ops { 39 void * (*finddevice)(const char *name); 40 int (*getprop)(const void *phandle, const char *name, void *buf, 41 const int buflen); 42 int (*setprop)(const void *phandle, const char *name, 43 const void *buf, const int buflen); 44 int (*del_node)(const void *phandle); 45 void *(*get_parent)(const void *phandle); 46 /* The node must not already exist. */ 47 void *(*create_node)(const void *parent, const char *name); 48 void *(*find_node_by_prop_value)(const void *prev, 49 const char *propname, 50 const char *propval, int proplen); 51 void *(*find_node_by_compatible)(const void *prev, 52 const char *compat); 53 unsigned long (*finalize)(void); 54 char *(*get_path)(const void *phandle, char *buf, int len); 55 }; 56 extern struct dt_ops dt_ops; 57 58 /* Console operations */ 59 struct console_ops { 60 int (*open)(void); 61 void (*write)(const char *buf, int len); 62 void (*edit_cmdline)(char *buf, int len, unsigned int getline_timeout); 63 void (*close)(void); 64 void *data; 65 }; 66 extern struct console_ops console_ops; 67 68 /* Serial console operations */ 69 struct serial_console_data { 70 int (*open)(void); 71 void (*putc)(unsigned char c); 72 unsigned char (*getc)(void); 73 u8 (*tstc)(void); 74 void (*close)(void); 75 }; 76 77 struct loader_info { 78 void *promptr; 79 unsigned long initrd_addr, initrd_size; 80 char *cmdline; 81 int cmdline_len; 82 }; 83 extern struct loader_info loader_info; 84 85 void start(void); 86 void fdt_init(void *blob); 87 int serial_console_init(void); 88 int ns16550_console_init(void *devp, struct serial_console_data *scdp); 89 int cpm_console_init(void *devp, struct serial_console_data *scdp); 90 int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp); 91 int uartlite_console_init(void *devp, struct serial_console_data *scdp); 92 int opal_console_init(void *devp, struct serial_console_data *scdp); 93 void *simple_alloc_init(char *base, unsigned long heap_size, 94 unsigned long granularity, unsigned long max_allocs); 95 extern void flush_cache(void *, unsigned long); 96 int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size); 97 int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr); 98 int dt_is_compatible(void *node, const char *compat); 99 void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize); 100 int dt_get_virtual_reg(void *node, void **addr, int nres); 101 102 static inline void *finddevice(const char *name) 103 { 104 return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL; 105 } 106 107 static inline int getprop(void *devp, const char *name, void *buf, int buflen) 108 { 109 return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1; 110 } 111 112 static inline int setprop(void *devp, const char *name, 113 const void *buf, int buflen) 114 { 115 return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1; 116 } 117 #define setprop_val(devp, name, val) \ 118 do { \ 119 typeof(val) x = (val); \ 120 setprop((devp), (name), &x, sizeof(x)); \ 121 } while (0) 122 123 static inline int setprop_str(void *devp, const char *name, const char *buf) 124 { 125 if (dt_ops.setprop) 126 return dt_ops.setprop(devp, name, buf, strlen(buf) + 1); 127 128 return -1; 129 } 130 131 static inline int del_node(const void *devp) 132 { 133 return dt_ops.del_node ? dt_ops.del_node(devp) : -1; 134 } 135 136 static inline void *get_parent(const char *devp) 137 { 138 return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL; 139 } 140 141 static inline void *create_node(const void *parent, const char *name) 142 { 143 return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL; 144 } 145 146 147 static inline void *find_node_by_prop_value(const void *prev, 148 const char *propname, 149 const char *propval, int proplen) 150 { 151 if (dt_ops.find_node_by_prop_value) 152 return dt_ops.find_node_by_prop_value(prev, propname, 153 propval, proplen); 154 155 return NULL; 156 } 157 158 static inline void *find_node_by_prop_value_str(const void *prev, 159 const char *propname, 160 const char *propval) 161 { 162 return find_node_by_prop_value(prev, propname, propval, 163 strlen(propval) + 1); 164 } 165 166 static inline void *find_node_by_devtype(const void *prev, 167 const char *type) 168 { 169 return find_node_by_prop_value_str(prev, "device_type", type); 170 } 171 172 static inline void *find_node_by_alias(const char *alias) 173 { 174 void *devp = finddevice("/aliases"); 175 176 if (devp) { 177 char path[MAX_PATH_LEN]; 178 if (getprop(devp, alias, path, MAX_PATH_LEN) > 0) 179 return finddevice(path); 180 } 181 182 return NULL; 183 } 184 185 static inline void *find_node_by_compatible(const void *prev, 186 const char *compat) 187 { 188 if (dt_ops.find_node_by_compatible) 189 return dt_ops.find_node_by_compatible(prev, compat); 190 191 return NULL; 192 } 193 194 void dt_fixup_memory(u64 start, u64 size); 195 void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq); 196 void dt_fixup_clock(const char *path, u32 freq); 197 void dt_fixup_mac_address_by_alias(const char *alias, const u8 *addr); 198 void dt_fixup_mac_address(u32 index, const u8 *addr); 199 void __dt_fixup_mac_addresses(u32 startindex, ...); 200 #define dt_fixup_mac_addresses(...) \ 201 __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL) 202 203 204 static inline void *find_node_by_linuxphandle(const u32 linuxphandle) 205 { 206 return find_node_by_prop_value(NULL, "linux,phandle", 207 (char *)&linuxphandle, sizeof(u32)); 208 } 209 210 static inline char *get_path(const void *phandle, char *buf, int len) 211 { 212 if (dt_ops.get_path) 213 return dt_ops.get_path(phandle, buf, len); 214 215 return NULL; 216 } 217 218 static inline void *malloc(unsigned long size) 219 { 220 return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL; 221 } 222 223 static inline void free(void *ptr) 224 { 225 if (platform_ops.free) 226 platform_ops.free(ptr); 227 } 228 229 static inline void exit(void) 230 { 231 if (platform_ops.exit) 232 platform_ops.exit(); 233 for(;;); 234 } 235 #define fatal(args...) { printf(args); exit(); } 236 237 238 #define BSS_STACK(size) \ 239 static char _bss_stack[size]; \ 240 void *_platform_stack_top = _bss_stack + sizeof(_bss_stack); 241 242 extern unsigned long timebase_period_ns; 243 void udelay(long delay); 244 245 extern char _start[]; 246 extern char __bss_start[]; 247 extern char _end[]; 248 extern char _vmlinux_start[]; 249 extern char _vmlinux_end[]; 250 extern char _initrd_start[]; 251 extern char _initrd_end[]; 252 extern char _dtb_start[]; 253 extern char _dtb_end[]; 254 255 static inline __attribute__((const)) 256 int __ilog2_u32(u32 n) 257 { 258 int bit; 259 asm ("cntlzw %0,%1" : "=r" (bit) : "r" (n)); 260 return 31 - bit; 261 } 262 263 long partial_decompress(void *inbuf, unsigned long input_size, void *outbuf, 264 unsigned long output_size, unsigned long skip); 265 266 #endif /* _PPC_BOOT_OPS_H_ */ 267