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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 BOOT_COMMAND_LINE_SIZE 2048
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 void (*kentry)(unsigned long fdt_addr, void *vmlinux_addr);
34};
35extern struct platform_ops platform_ops;
36
37
38struct dt_ops {
39 void * (*finddevice)(const char *name);
40 int (*getprop)(const void *phandle, const char *name, void *buf,
41 const int buflen);
42 int (*setprop)(const void *phandle, const char *name,
43 const void *buf, const int buflen);
44 int (*del_node)(const void *phandle);
45 void *(*get_parent)(const void *phandle);
46
47 void *(*create_node)(const void *parent, const char *name);
48 void *(*find_node_by_prop_value)(const void *prev,
49 const char *propname,
50 const char *propval, int proplen);
51 void *(*find_node_by_compatible)(const void *prev,
52 const char *compat);
53 unsigned long (*finalize)(void);
54 char *(*get_path)(const void *phandle, char *buf, int len);
55};
56extern struct dt_ops dt_ops;
57
58
59struct console_ops {
60 int (*open)(void);
61 void (*write)(const char *buf, int len);
62 void (*edit_cmdline)(char *buf, int len, unsigned int getline_timeout);
63 void (*close)(void);
64 void *data;
65};
66extern struct console_ops console_ops;
67
68
69struct serial_console_data {
70 int (*open)(void);
71 void (*putc)(unsigned char c);
72 unsigned char (*getc)(void);
73 u8 (*tstc)(void);
74 void (*close)(void);
75};
76
77struct loader_info {
78 void *promptr;
79 unsigned long initrd_addr, initrd_size;
80 char *cmdline;
81 int cmdline_len;
82};
83extern struct loader_info loader_info;
84
85void start(void);
86void fdt_init(void *blob);
87int serial_console_init(void);
88int ns16550_console_init(void *devp, struct serial_console_data *scdp);
89int cpm_console_init(void *devp, struct serial_console_data *scdp);
90int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp);
91int uartlite_console_init(void *devp, struct serial_console_data *scdp);
92int opal_console_init(void *devp, struct serial_console_data *scdp);
93void *simple_alloc_init(char *base, unsigned long heap_size,
94 unsigned long granularity, unsigned long max_allocs);
95extern void flush_cache(void *, unsigned long);
96int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size);
97int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr);
98int dt_is_compatible(void *node, const char *compat);
99void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize);
100int dt_get_virtual_reg(void *node, void **addr, int nres);
101
102static inline void *finddevice(const char *name)
103{
104 return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL;
105}
106
107static inline int getprop(void *devp, const char *name, void *buf, int buflen)
108{
109 return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1;
110}
111
112static inline int setprop(void *devp, const char *name,
113 const void *buf, int buflen)
114{
115 return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1;
116}
117#define setprop_val(devp, name, val) \
118 do { \
119 typeof(val) x = (val); \
120 setprop((devp), (name), &x, sizeof(x)); \
121 } while (0)
122
123static inline int setprop_str(void *devp, const char *name, const char *buf)
124{
125 if (dt_ops.setprop)
126 return dt_ops.setprop(devp, name, buf, strlen(buf) + 1);
127
128 return -1;
129}
130
131static inline int del_node(const void *devp)
132{
133 return dt_ops.del_node ? dt_ops.del_node(devp) : -1;
134}
135
136static inline void *get_parent(const char *devp)
137{
138 return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL;
139}
140
141static inline void *create_node(const void *parent, const char *name)
142{
143 return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL;
144}
145
146
147static inline void *find_node_by_prop_value(const void *prev,
148 const char *propname,
149 const char *propval, int proplen)
150{
151 if (dt_ops.find_node_by_prop_value)
152 return dt_ops.find_node_by_prop_value(prev, propname,
153 propval, proplen);
154
155 return NULL;
156}
157
158static inline void *find_node_by_prop_value_str(const void *prev,
159 const char *propname,
160 const char *propval)
161{
162 return find_node_by_prop_value(prev, propname, propval,
163 strlen(propval) + 1);
164}
165
166static inline void *find_node_by_devtype(const void *prev,
167 const char *type)
168{
169 return find_node_by_prop_value_str(prev, "device_type", type);
170}
171
172static inline void *find_node_by_alias(const char *alias)
173{
174 void *devp = finddevice("/aliases");
175
176 if (devp) {
177 char path[MAX_PATH_LEN];
178 if (getprop(devp, alias, path, MAX_PATH_LEN) > 0)
179 return finddevice(path);
180 }
181
182 return NULL;
183}
184
185static inline void *find_node_by_compatible(const void *prev,
186 const char *compat)
187{
188 if (dt_ops.find_node_by_compatible)
189 return dt_ops.find_node_by_compatible(prev, compat);
190
191 return NULL;
192}
193
194void dt_fixup_memory(u64 start, u64 size);
195void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq);
196void dt_fixup_clock(const char *path, u32 freq);
197void dt_fixup_mac_address_by_alias(const char *alias, const u8 *addr);
198void dt_fixup_mac_address(u32 index, const u8 *addr);
199void __dt_fixup_mac_addresses(u32 startindex, ...);
200#define dt_fixup_mac_addresses(...) \
201 __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL)
202
203
204static inline void *find_node_by_linuxphandle(const u32 linuxphandle)
205{
206 return find_node_by_prop_value(NULL, "linux,phandle",
207 (char *)&linuxphandle, sizeof(u32));
208}
209
210static inline char *get_path(const void *phandle, char *buf, int len)
211{
212 if (dt_ops.get_path)
213 return dt_ops.get_path(phandle, buf, len);
214
215 return NULL;
216}
217
218static inline void *malloc(unsigned long size)
219{
220 return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL;
221}
222
223static inline void free(void *ptr)
224{
225 if (platform_ops.free)
226 platform_ops.free(ptr);
227}
228
229static inline void exit(void)
230{
231 if (platform_ops.exit)
232 platform_ops.exit();
233 for(;;);
234}
235#define fatal(args...) { printf(args); exit(); }
236
237
238#define BSS_STACK(size) \
239 static char _bss_stack[size]; \
240 void *_platform_stack_top = _bss_stack + sizeof(_bss_stack);
241
242extern unsigned long timebase_period_ns;
243void udelay(long delay);
244
245extern char _start[];
246extern char __bss_start[];
247extern char _end[];
248extern char _vmlinux_start[];
249extern char _vmlinux_end[];
250extern char _initrd_start[];
251extern char _initrd_end[];
252extern char _dtb_start[];
253extern char _dtb_end[];
254extern char _esm_blob_start[];
255extern char _esm_blob_end[];
256
257static inline __attribute__((const))
258int __ilog2_u32(u32 n)
259{
260 int bit;
261 asm ("cntlzw %0,%1" : "=r" (bit) : "r" (n));
262 return 31 - bit;
263}
264
265long partial_decompress(void *inbuf, unsigned long input_size, void *outbuf,
266 unsigned long output_size, unsigned long skip);
267
268#endif
269
