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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
21
22typedef void (*kernel_entry_t)(unsigned long r3, unsigned long r4, void *r5);
23
24
25struct 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};
34extern struct platform_ops platform_ops;
35
36
37struct 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
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};
52extern struct dt_ops dt_ops;
53
54
55struct 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};
62extern struct console_ops console_ops;
63
64
65struct 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
73struct loader_info {
74 void *promptr;
75 unsigned long initrd_addr, initrd_size;
76 char *cmdline;
77 int cmdline_len;
78};
79extern struct loader_info loader_info;
80
81void start(void);
82int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device);
83int serial_console_init(void);
84int ns16550_console_init(void *devp, struct serial_console_data *scdp);
85int mpsc_console_init(void *devp, struct serial_console_data *scdp);
86int cpm_console_init(void *devp, struct serial_console_data *scdp);
87int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp);
88int uartlite_console_init(void *devp, struct serial_console_data *scdp);
89void *simple_alloc_init(char *base, unsigned long heap_size,
90 unsigned long granularity, unsigned long max_allocs);
91extern void flush_cache(void *, unsigned long);
92int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size);
93int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr);
94int dt_is_compatible(void *node, const char *compat);
95void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize);
96
97static inline void *finddevice(const char *name)
98{
99 return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL;
100}
101
102static 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
107static 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
118static 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
126static inline void *get_parent(const char *devp)
127{
128 return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL;
129}
130
131static 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
137static 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
148static 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
156static 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
162void dt_fixup_memory(u64 start, u64 size);
163void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq);
164void dt_fixup_clock(const char *path, u32 freq);
165void dt_fixup_mac_address(u32 index, const u8 *addr);
166void __dt_fixup_mac_addresses(u32 startindex, ...);
167#define dt_fixup_mac_addresses(...) \
168 __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL)
169
170
171static 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
177static 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
185static inline void *malloc(unsigned long size)
186{
187 return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL;
188}
189
190static inline void free(void *ptr)
191{
192 if (platform_ops.free)
193 platform_ops.free(ptr);
194}
195
196static 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
209extern unsigned long timebase_period_ns;
210void udelay(long delay);
211
212extern char _start[];
213extern char __bss_start[];
214extern char _end[];
215extern char _vmlinux_start[];
216extern char _vmlinux_end[];
217extern char _initrd_start[];
218extern char _initrd_end[];
219extern char _dtb_start[];
220extern char _dtb_end[];
221
222static inline __attribute__((const))
223int __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
231
