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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 opal_console_init(void *devp, struct serial_console_data *scdp);
92void *simple_alloc_init(char *base, unsigned long heap_size,
93 unsigned long granularity, unsigned long max_allocs);
94extern void flush_cache(void *, unsigned long);
95int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size);
96int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr);
97int dt_is_compatible(void *node, const char *compat);
98void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize);
99int dt_get_virtual_reg(void *node, void **addr, int nres);
100
101static inline void *finddevice(const char *name)
102{
103 return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL;
104}
105
106static inline int getprop(void *devp, const char *name, void *buf, int buflen)
107{
108 return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1;
109}
110
111static inline int setprop(void *devp, const char *name,
112 const void *buf, int buflen)
113{
114 return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1;
115}
116#define setprop_val(devp, name, val) \
117 do { \
118 typeof(val) x = (val); \
119 setprop((devp), (name), &x, sizeof(x)); \
120 } while (0)
121
122static inline int setprop_str(void *devp, const char *name, const char *buf)
123{
124 if (dt_ops.setprop)
125 return dt_ops.setprop(devp, name, buf, strlen(buf) + 1);
126
127 return -1;
128}
129
130static inline int del_node(const void *devp)
131{
132 return dt_ops.del_node ? dt_ops.del_node(devp) : -1;
133}
134
135static inline void *get_parent(const char *devp)
136{
137 return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL;
138}
139
140static inline void *create_node(const void *parent, const char *name)
141{
142 return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL;
143}
144
145
146static inline void *find_node_by_prop_value(const void *prev,
147 const char *propname,
148 const char *propval, int proplen)
149{
150 if (dt_ops.find_node_by_prop_value)
151 return dt_ops.find_node_by_prop_value(prev, propname,
152 propval, proplen);
153
154 return NULL;
155}
156
157static inline void *find_node_by_prop_value_str(const void *prev,
158 const char *propname,
159 const char *propval)
160{
161 return find_node_by_prop_value(prev, propname, propval,
162 strlen(propval) + 1);
163}
164
165static inline void *find_node_by_devtype(const void *prev,
166 const char *type)
167{
168 return find_node_by_prop_value_str(prev, "device_type", type);
169}
170
171static inline void *find_node_by_alias(const char *alias)
172{
173 void *devp = finddevice("/aliases");
174
175 if (devp) {
176 char path[MAX_PATH_LEN];
177 if (getprop(devp, alias, path, MAX_PATH_LEN) > 0)
178 return finddevice(path);
179 }
180
181 return NULL;
182}
183
184static inline void *find_node_by_compatible(const void *prev,
185 const char *compat)
186{
187 if (dt_ops.find_node_by_compatible)
188 return dt_ops.find_node_by_compatible(prev, compat);
189
190 return NULL;
191}
192
193void dt_fixup_memory(u64 start, u64 size);
194void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq);
195void dt_fixup_clock(const char *path, u32 freq);
196void dt_fixup_mac_address_by_alias(const char *alias, const u8 *addr);
197void dt_fixup_mac_address(u32 index, const u8 *addr);
198void __dt_fixup_mac_addresses(u32 startindex, ...);
199#define dt_fixup_mac_addresses(...) \
200 __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL)
201
202
203static inline void *find_node_by_linuxphandle(const u32 linuxphandle)
204{
205 return find_node_by_prop_value(NULL, "linux,phandle",
206 (char *)&linuxphandle, sizeof(u32));
207}
208
209static inline char *get_path(const void *phandle, char *buf, int len)
210{
211 if (dt_ops.get_path)
212 return dt_ops.get_path(phandle, buf, len);
213
214 return NULL;
215}
216
217static inline void *malloc(unsigned long size)
218{
219 return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL;
220}
221
222static inline void free(void *ptr)
223{
224 if (platform_ops.free)
225 platform_ops.free(ptr);
226}
227
228static inline void exit(void)
229{
230 if (platform_ops.exit)
231 platform_ops.exit();
232 for(;;);
233}
234#define fatal(args...) { printf(args); exit(); }
235
236
237#define BSS_STACK(size) \
238 static char _bss_stack[size]; \
239 void *_platform_stack_top = _bss_stack + sizeof(_bss_stack);
240
241extern unsigned long timebase_period_ns;
242void udelay(long delay);
243
244extern char _start[];
245extern char __bss_start[];
246extern char _end[];
247extern char _vmlinux_start[];
248extern char _vmlinux_end[];
249extern char _initrd_start[];
250extern char _initrd_end[];
251extern char _dtb_start[];
252extern char _dtb_end[];
253extern char _esm_blob_start[];
254extern char _esm_blob_end[];
255
256static inline __attribute__((const))
257int __ilog2_u32(u32 n)
258{
259 int bit;
260 asm ("cntlzw %0,%1" : "=r" (bit) : "r" (n));
261 return 31 - bit;
262}
263
264long partial_decompress(void *inbuf, unsigned long input_size, void *outbuf,
265 unsigned long output_size, unsigned long skip);
266
267#endif
268
