arch/powerpc/boot/ops.h

   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 "types.h"
  15
  16 #define COMMAND_LINE_SIZE       512
  17 #define MAX_PATH_LEN            256
  18 #define MAX_PROP_LEN            256 /* What should this be? */
  19
  20 /* Platform specific operations */
  21 struct platform_ops {
  22         void    (*fixups)(void);
  23         void    (*image_hdr)(const void *);
  24         void *  (*malloc)(u32 size);
  25         void    (*free)(void *ptr, u32 size);
  26         void    (*exit)(void);
  27 };
  28 extern struct platform_ops platform_ops;
  29
  30 /* Device Tree operations */
  31 struct dt_ops {
  32         void *  (*finddevice)(const char *name);
  33         int     (*getprop)(const void *node, const char *name, void *buf,
  34                         const int buflen);
  35         int     (*setprop)(const void *node, const char *name,
  36                         const void *buf, const int buflen);
  37         u64     (*translate_addr)(const char *path, const u32 *in_addr,
  38                         const u32 addr_len);
  39         unsigned long (*ft_addr)(void);
  40 };
  41 extern struct dt_ops dt_ops;
  42
  43 /* Console operations */
  44 struct console_ops {
  45         int     (*open)(void);
  46         void    (*write)(char *buf, int len);
  47         void    (*edit_cmdline)(char *buf, int len);
  48         void    (*close)(void);
  49         void    *data;
  50 };
  51 extern struct console_ops console_ops;
  52
  53 /* Serial console operations */
  54 struct serial_console_data {
  55         int             (*open)(void);
  56         void            (*putc)(unsigned char c);
  57         unsigned char   (*getc)(void);
  58         u8              (*tstc)(void);
  59         void            (*close)(void);
  60 };
  61
  62 extern int platform_init(void *promptr);
  63 extern void simple_alloc_init(void);
  64 extern void ft_init(void *dt_blob);
  65 extern int serial_console_init(void);
  66
  67 static inline void *finddevice(const char *name)
  68 {
  69         return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL;
  70 }
  71
  72 static inline int getprop(void *devp, const char *name, void *buf, int buflen)
  73 {
  74         return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1;
  75 }
  76
  77 static inline int setprop(void *devp, const char *name, void *buf, int buflen)
  78 {
  79         return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1;
  80 }
  81
  82 static inline void *malloc(u32 size)
  83 {
  84         return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL;
  85 }
  86
  87 static inline void free(void *ptr, u32 size)
  88 {
  89         if (platform_ops.free)
  90                 platform_ops.free(ptr, size);
  91 }
  92
  93 static inline void exit(void)
  94 {
  95         if (platform_ops.exit)
  96                 platform_ops.exit();
  97         for(;;);
  98 }
  99
 100 #endif /* _PPC_BOOT_OPS_H_ */