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 }; 51 extern struct dt_ops dt_ops; 52 53 /* Console operations */ 54 struct console_ops { 55 int (*open)(void); 56 void (*write)(const char *buf, int len); 57 void (*edit_cmdline)(char *buf, int len); 58 void (*close)(void); 59 void *data; 60 }; 61 extern struct console_ops console_ops; 62 63 /* Serial console operations */ 64 struct serial_console_data { 65 int (*open)(void); 66 void (*putc)(unsigned char c); 67 unsigned char (*getc)(void); 68 u8 (*tstc)(void); 69 void (*close)(void); 70 }; 71 72 struct loader_info { 73 void *promptr; 74 unsigned long initrd_addr, initrd_size; 75 char *cmdline; 76 int cmdline_len; 77 }; 78 extern struct loader_info loader_info; 79 80 void start(void); 81 int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device); 82 int serial_console_init(void); 83 int ns16550_console_init(void *devp, struct serial_console_data *scdp); 84 int mpsc_console_init(void *devp, struct serial_console_data *scdp); 85 void *simple_alloc_init(char *base, unsigned long heap_size, 86 unsigned long granularity, unsigned long max_allocs); 87 extern void flush_cache(void *, unsigned long); 88 int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size); 89 int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr); 90 91 static inline void *finddevice(const char *name) 92 { 93 return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL; 94 } 95 96 static inline int getprop(void *devp, const char *name, void *buf, int buflen) 97 { 98 return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1; 99 } 100 101 static inline int setprop(void *devp, const char *name, 102 const void *buf, int buflen) 103 { 104 return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1; 105 } 106 #define setprop_val(devp, name, val) \ 107 do { \ 108 typeof(val) x = (val); \ 109 setprop((devp), (name), &x, sizeof(x)); \ 110 } while (0) 111 112 static inline int setprop_str(void *devp, const char *name, const char *buf) 113 { 114 if (dt_ops.setprop) 115 return dt_ops.setprop(devp, name, buf, strlen(buf) + 1); 116 117 return -1; 118 } 119 120 static inline void *get_parent(const char *devp) 121 { 122 return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL; 123 } 124 125 static inline void *create_node(const void *parent, const char *name) 126 { 127 return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL; 128 } 129 130 131 static inline void *find_node_by_prop_value(const void *prev, 132 const char *propname, 133 const char *propval, int proplen) 134 { 135 if (dt_ops.find_node_by_prop_value) 136 return dt_ops.find_node_by_prop_value(prev, propname, 137 propval, proplen); 138 139 return NULL; 140 } 141 142 static inline void *find_node_by_prop_value_str(const void *prev, 143 const char *propname, 144 const char *propval) 145 { 146 return find_node_by_prop_value(prev, propname, propval, 147 strlen(propval) + 1); 148 } 149 150 static inline void *find_node_by_devtype(const void *prev, 151 const char *type) 152 { 153 return find_node_by_prop_value_str(prev, "device_type", type); 154 } 155 156 void dt_fixup_memory(u64 start, u64 size); 157 void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq); 158 void dt_fixup_clock(const char *path, u32 freq); 159 void __dt_fixup_mac_addresses(u32 startindex, ...); 160 #define dt_fixup_mac_addresses(...) \ 161 __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL) 162 163 164 static inline void *find_node_by_linuxphandle(const u32 linuxphandle) 165 { 166 return find_node_by_prop_value(NULL, "linux,phandle", 167 (char *)&linuxphandle, sizeof(u32)); 168 } 169 170 static inline void *malloc(unsigned long size) 171 { 172 return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL; 173 } 174 175 static inline void free(void *ptr) 176 { 177 if (platform_ops.free) 178 platform_ops.free(ptr); 179 } 180 181 static inline void exit(void) 182 { 183 if (platform_ops.exit) 184 platform_ops.exit(); 185 for(;;); 186 } 187 #define fatal(args...) { printf(args); exit(); } 188 189 190 #define BSS_STACK(size) \ 191 static char _bss_stack[size]; \ 192 void *_platform_stack_top = _bss_stack + sizeof(_bss_stack); 193 194 #endif /* _PPC_BOOT_OPS_H_ */ 195