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 /* Platform specific operations */ 23 struct platform_ops { 24 void (*fixups)(void); 25 void (*image_hdr)(const void *); 26 void * (*malloc)(unsigned long size); 27 void (*free)(void *ptr); 28 void * (*realloc)(void *ptr, unsigned long size); 29 void (*exit)(void); 30 void * (*vmlinux_alloc)(unsigned long size); 31 }; 32 extern struct platform_ops platform_ops; 33 34 /* Device Tree operations */ 35 struct dt_ops { 36 void * (*finddevice)(const char *name); 37 int (*getprop)(const void *phandle, const char *name, void *buf, 38 const int buflen); 39 int (*setprop)(const void *phandle, const char *name, 40 const void *buf, const int buflen); 41 void *(*get_parent)(const void *phandle); 42 /* The node must not already exist. */ 43 void *(*create_node)(const void *parent, const char *name); 44 void *(*find_node_by_prop_value)(const void *prev, 45 const char *propname, 46 const char *propval, int proplen); 47 unsigned long (*finalize)(void); 48 }; 49 extern struct dt_ops dt_ops; 50 51 /* Console operations */ 52 struct console_ops { 53 int (*open)(void); 54 void (*write)(char *buf, int len); 55 void (*edit_cmdline)(char *buf, int len); 56 void (*close)(void); 57 void *data; 58 }; 59 extern struct console_ops console_ops; 60 61 /* Serial console operations */ 62 struct serial_console_data { 63 int (*open)(void); 64 void (*putc)(unsigned char c); 65 unsigned char (*getc)(void); 66 u8 (*tstc)(void); 67 void (*close)(void); 68 }; 69 70 struct loader_info { 71 void *promptr; 72 unsigned long initrd_addr, initrd_size; 73 char *cmdline; 74 int cmdline_len; 75 }; 76 extern struct loader_info loader_info; 77 78 void start(void); 79 int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device); 80 int serial_console_init(void); 81 int ns16550_console_init(void *devp, struct serial_console_data *scdp); 82 int mpsc_console_init(void *devp, struct serial_console_data *scdp); 83 void *simple_alloc_init(char *base, unsigned long heap_size, 84 unsigned long granularity, unsigned long max_allocs); 85 extern void flush_cache(void *, unsigned long); 86 int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size); 87 int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr); 88 89 static inline void *finddevice(const char *name) 90 { 91 return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL; 92 } 93 94 static inline int getprop(void *devp, const char *name, void *buf, int buflen) 95 { 96 return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1; 97 } 98 99 static inline int setprop(void *devp, const char *name, 100 const void *buf, int buflen) 101 { 102 return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1; 103 } 104 #define setprop_val(devp, name, val) \ 105 do { \ 106 typeof(val) x = (val); \ 107 setprop((devp), (name), &x, sizeof(x)); \ 108 } while (0) 109 110 static inline int setprop_str(void *devp, const char *name, const char *buf) 111 { 112 if (dt_ops.setprop) 113 return dt_ops.setprop(devp, name, buf, strlen(buf) + 1); 114 115 return -1; 116 } 117 118 static inline void *get_parent(const char *devp) 119 { 120 return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL; 121 } 122 123 static inline void *create_node(const void *parent, const char *name) 124 { 125 return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL; 126 } 127 128 129 static inline void *find_node_by_prop_value(const void *prev, 130 const char *propname, 131 const char *propval, int proplen) 132 { 133 if (dt_ops.find_node_by_prop_value) 134 return dt_ops.find_node_by_prop_value(prev, propname, 135 propval, proplen); 136 137 return NULL; 138 } 139 140 static inline void *find_node_by_prop_value_str(const void *prev, 141 const char *propname, 142 const char *propval) 143 { 144 return find_node_by_prop_value(prev, propname, propval, 145 strlen(propval) + 1); 146 } 147 148 static inline void *find_node_by_devtype(const void *prev, 149 const char *type) 150 { 151 return find_node_by_prop_value_str(prev, "device_type", type); 152 } 153 154 void dt_fixup_memory(u64 start, u64 size); 155 void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq); 156 void dt_fixup_clock(const char *path, u32 freq); 157 void __dt_fixup_mac_addresses(u32 startindex, ...); 158 #define dt_fixup_mac_addresses(...) \ 159 __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL) 160 161 162 static inline void *find_node_by_linuxphandle(const u32 linuxphandle) 163 { 164 return find_node_by_prop_value(NULL, "linux,phandle", 165 (char *)&linuxphandle, sizeof(u32)); 166 } 167 168 static inline void *malloc(unsigned long size) 169 { 170 return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL; 171 } 172 173 static inline void free(void *ptr) 174 { 175 if (platform_ops.free) 176 platform_ops.free(ptr); 177 } 178 179 static inline void exit(void) 180 { 181 if (platform_ops.exit) 182 platform_ops.exit(); 183 for(;;); 184 } 185 #define fatal(args...) { printf(args); exit(); } 186 187 188 #define BSS_STACK(size) \ 189 static char _bss_stack[size]; \ 190 void *_platform_stack_top = _bss_stack + sizeof(_bss_stack); 191 192 #endif /* _PPC_BOOT_OPS_H_ */ 193