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 COMMAND_LINE_SIZE 512 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 void *(*get_parent)(const void *phandle); 44 /* The node must not already exist. */ 45 void *(*create_node)(const void *parent, const char *name); 46 void *(*find_node_by_prop_value)(const void *prev, 47 const char *propname, 48 const char *propval, int proplen); 49 unsigned long (*finalize)(void); 50 char *(*get_path)(const void *phandle, char *buf, int len); 51 }; 52 extern struct dt_ops dt_ops; 53 54 /* Console operations */ 55 struct console_ops { 56 int (*open)(void); 57 void (*write)(const char *buf, int len); 58 void (*edit_cmdline)(char *buf, int len); 59 void (*close)(void); 60 void *data; 61 }; 62 extern struct console_ops console_ops; 63 64 /* Serial console operations */ 65 struct serial_console_data { 66 int (*open)(void); 67 void (*putc)(unsigned char c); 68 unsigned char (*getc)(void); 69 u8 (*tstc)(void); 70 void (*close)(void); 71 }; 72 73 struct loader_info { 74 void *promptr; 75 unsigned long initrd_addr, initrd_size; 76 char *cmdline; 77 int cmdline_len; 78 }; 79 extern struct loader_info loader_info; 80 81 void start(void); 82 int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device); 83 int serial_console_init(void); 84 int ns16550_console_init(void *devp, struct serial_console_data *scdp); 85 int mpsc_console_init(void *devp, struct serial_console_data *scdp); 86 int cpm_console_init(void *devp, struct serial_console_data *scdp); 87 int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp); 88 int uartlite_console_init(void *devp, struct serial_console_data *scdp); 89 void *simple_alloc_init(char *base, unsigned long heap_size, 90 unsigned long granularity, unsigned long max_allocs); 91 extern void flush_cache(void *, unsigned long); 92 int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size); 93 int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr); 94 int dt_is_compatible(void *node, const char *compat); 95 void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize); 96 97 static inline void *finddevice(const char *name) 98 { 99 return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL; 100 } 101 102 static inline int getprop(void *devp, const char *name, void *buf, int buflen) 103 { 104 return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1; 105 } 106 107 static inline int setprop(void *devp, const char *name, 108 const void *buf, int buflen) 109 { 110 return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1; 111 } 112 #define setprop_val(devp, name, val) \ 113 do { \ 114 typeof(val) x = (val); \ 115 setprop((devp), (name), &x, sizeof(x)); \ 116 } while (0) 117 118 static inline int setprop_str(void *devp, const char *name, const char *buf) 119 { 120 if (dt_ops.setprop) 121 return dt_ops.setprop(devp, name, buf, strlen(buf) + 1); 122 123 return -1; 124 } 125 126 static inline void *get_parent(const char *devp) 127 { 128 return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL; 129 } 130 131 static inline void *create_node(const void *parent, const char *name) 132 { 133 return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL; 134 } 135 136 137 static inline void *find_node_by_prop_value(const void *prev, 138 const char *propname, 139 const char *propval, int proplen) 140 { 141 if (dt_ops.find_node_by_prop_value) 142 return dt_ops.find_node_by_prop_value(prev, propname, 143 propval, proplen); 144 145 return NULL; 146 } 147 148 static inline void *find_node_by_prop_value_str(const void *prev, 149 const char *propname, 150 const char *propval) 151 { 152 return find_node_by_prop_value(prev, propname, propval, 153 strlen(propval) + 1); 154 } 155 156 static inline void *find_node_by_devtype(const void *prev, 157 const char *type) 158 { 159 return find_node_by_prop_value_str(prev, "device_type", type); 160 } 161 162 void dt_fixup_memory(u64 start, u64 size); 163 void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq); 164 void dt_fixup_clock(const char *path, u32 freq); 165 void dt_fixup_mac_address(u32 index, const u8 *addr); 166 void __dt_fixup_mac_addresses(u32 startindex, ...); 167 #define dt_fixup_mac_addresses(...) \ 168 __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL) 169 170 171 static inline void *find_node_by_linuxphandle(const u32 linuxphandle) 172 { 173 return find_node_by_prop_value(NULL, "linux,phandle", 174 (char *)&linuxphandle, sizeof(u32)); 175 } 176 177 static inline char *get_path(const void *phandle, char *buf, int len) 178 { 179 if (dt_ops.get_path) 180 return dt_ops.get_path(phandle, buf, len); 181 182 return NULL; 183 } 184 185 static inline void *malloc(unsigned long size) 186 { 187 return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL; 188 } 189 190 static inline void free(void *ptr) 191 { 192 if (platform_ops.free) 193 platform_ops.free(ptr); 194 } 195 196 static inline void exit(void) 197 { 198 if (platform_ops.exit) 199 platform_ops.exit(); 200 for(;;); 201 } 202 #define fatal(args...) { printf(args); exit(); } 203 204 205 #define BSS_STACK(size) \ 206 static char _bss_stack[size]; \ 207 void *_platform_stack_top = _bss_stack + sizeof(_bss_stack); 208 209 extern unsigned long timebase_period_ns; 210 void udelay(long delay); 211 212 extern char _start[]; 213 extern char __bss_start[]; 214 extern char _end[]; 215 extern char _vmlinux_start[]; 216 extern char _vmlinux_end[]; 217 extern char _initrd_start[]; 218 extern char _initrd_end[]; 219 extern char _dtb_start[]; 220 extern char _dtb_end[]; 221 222 static inline __attribute__((const)) 223 int __ilog2_u32(u32 n) 224 { 225 int bit; 226 asm ("cntlzw %0,%1" : "=r" (bit) : "r" (n)); 227 return 31 - bit; 228 } 229 230 #endif /* _PPC_BOOT_OPS_H_ */ 231