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 }; 34 extern struct platform_ops platform_ops; 35 36 /* Device Tree operations */ 37 struct dt_ops { 38 void * (*finddevice)(const char *name); 39 int (*getprop)(const void *phandle, const char *name, void *buf, 40 const int buflen); 41 int (*setprop)(const void *phandle, const char *name, 42 const void *buf, const int buflen); 43 int (*del_node)(const void *phandle); 44 void *(*get_parent)(const void *phandle); 45 /* The node must not already exist. */ 46 void *(*create_node)(const void *parent, const char *name); 47 void *(*find_node_by_prop_value)(const void *prev, 48 const char *propname, 49 const char *propval, int proplen); 50 void *(*find_node_by_compatible)(const void *prev, 51 const char *compat); 52 unsigned long (*finalize)(void); 53 char *(*get_path)(const void *phandle, char *buf, int len); 54 }; 55 extern struct dt_ops dt_ops; 56 57 /* Console operations */ 58 struct console_ops { 59 int (*open)(void); 60 void (*write)(const char *buf, int len); 61 void (*edit_cmdline)(char *buf, int len, unsigned int getline_timeout); 62 void (*close)(void); 63 void *data; 64 }; 65 extern struct console_ops console_ops; 66 67 /* Serial console operations */ 68 struct serial_console_data { 69 int (*open)(void); 70 void (*putc)(unsigned char c); 71 unsigned char (*getc)(void); 72 u8 (*tstc)(void); 73 void (*close)(void); 74 }; 75 76 struct loader_info { 77 void *promptr; 78 unsigned long initrd_addr, initrd_size; 79 char *cmdline; 80 int cmdline_len; 81 }; 82 extern struct loader_info loader_info; 83 84 void start(void); 85 void fdt_init(void *blob); 86 int serial_console_init(void); 87 int ns16550_console_init(void *devp, struct serial_console_data *scdp); 88 int mpsc_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 void *simple_alloc_init(char *base, unsigned long heap_size, 93 unsigned long granularity, unsigned long max_allocs); 94 extern void flush_cache(void *, unsigned long); 95 int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size); 96 int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr); 97 int dt_is_compatible(void *node, const char *compat); 98 void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize); 99 int dt_get_virtual_reg(void *node, void **addr, int nres); 100 101 static inline void *finddevice(const char *name) 102 { 103 return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL; 104 } 105 106 static inline int getprop(void *devp, const char *name, void *buf, int buflen) 107 { 108 return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1; 109 } 110 111 static inline int setprop(void *devp, const char *name, 112 const void *buf, int buflen) 113 { 114 return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1; 115 } 116 #define setprop_val(devp, name, val) \ 117 do { \ 118 typeof(val) x = (val); \ 119 setprop((devp), (name), &x, sizeof(x)); \ 120 } while (0) 121 122 static inline int setprop_str(void *devp, const char *name, const char *buf) 123 { 124 if (dt_ops.setprop) 125 return dt_ops.setprop(devp, name, buf, strlen(buf) + 1); 126 127 return -1; 128 } 129 130 static inline int del_node(const void *devp) 131 { 132 return dt_ops.del_node ? dt_ops.del_node(devp) : -1; 133 } 134 135 static inline void *get_parent(const char *devp) 136 { 137 return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL; 138 } 139 140 static inline void *create_node(const void *parent, const char *name) 141 { 142 return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL; 143 } 144 145 146 static inline void *find_node_by_prop_value(const void *prev, 147 const char *propname, 148 const char *propval, int proplen) 149 { 150 if (dt_ops.find_node_by_prop_value) 151 return dt_ops.find_node_by_prop_value(prev, propname, 152 propval, proplen); 153 154 return NULL; 155 } 156 157 static inline void *find_node_by_prop_value_str(const void *prev, 158 const char *propname, 159 const char *propval) 160 { 161 return find_node_by_prop_value(prev, propname, propval, 162 strlen(propval) + 1); 163 } 164 165 static inline void *find_node_by_devtype(const void *prev, 166 const char *type) 167 { 168 return find_node_by_prop_value_str(prev, "device_type", type); 169 } 170 171 static inline void *find_node_by_alias(const char *alias) 172 { 173 void *devp = finddevice("/aliases"); 174 175 if (devp) { 176 char path[MAX_PATH_LEN]; 177 if (getprop(devp, alias, path, MAX_PATH_LEN) > 0) 178 return finddevice(path); 179 } 180 181 return NULL; 182 } 183 184 static inline void *find_node_by_compatible(const void *prev, 185 const char *compat) 186 { 187 if (dt_ops.find_node_by_compatible) 188 return dt_ops.find_node_by_compatible(prev, compat); 189 190 return NULL; 191 } 192 193 void dt_fixup_memory(u64 start, u64 size); 194 void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq); 195 void dt_fixup_clock(const char *path, u32 freq); 196 void dt_fixup_mac_address_by_alias(const char *alias, const u8 *addr); 197 void dt_fixup_mac_address(u32 index, const u8 *addr); 198 void __dt_fixup_mac_addresses(u32 startindex, ...); 199 #define dt_fixup_mac_addresses(...) \ 200 __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL) 201 202 203 static inline void *find_node_by_linuxphandle(const u32 linuxphandle) 204 { 205 return find_node_by_prop_value(NULL, "linux,phandle", 206 (char *)&linuxphandle, sizeof(u32)); 207 } 208 209 static inline char *get_path(const void *phandle, char *buf, int len) 210 { 211 if (dt_ops.get_path) 212 return dt_ops.get_path(phandle, buf, len); 213 214 return NULL; 215 } 216 217 static inline void *malloc(unsigned long size) 218 { 219 return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL; 220 } 221 222 static inline void free(void *ptr) 223 { 224 if (platform_ops.free) 225 platform_ops.free(ptr); 226 } 227 228 static inline void exit(void) 229 { 230 if (platform_ops.exit) 231 platform_ops.exit(); 232 for(;;); 233 } 234 #define fatal(args...) { printf(args); exit(); } 235 236 237 #define BSS_STACK(size) \ 238 static char _bss_stack[size]; \ 239 void *_platform_stack_top = _bss_stack + sizeof(_bss_stack); 240 241 extern unsigned long timebase_period_ns; 242 void udelay(long delay); 243 244 extern char _start[]; 245 extern char __bss_start[]; 246 extern char _end[]; 247 extern char _vmlinux_start[]; 248 extern char _vmlinux_end[]; 249 extern char _initrd_start[]; 250 extern char _initrd_end[]; 251 extern char _dtb_start[]; 252 extern char _dtb_end[]; 253 254 static inline __attribute__((const)) 255 int __ilog2_u32(u32 n) 256 { 257 int bit; 258 asm ("cntlzw %0,%1" : "=r" (bit) : "r" (n)); 259 return 31 - bit; 260 } 261 262 #endif /* _PPC_BOOT_OPS_H_ */ 263