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Mark A. Greerb2c5f612006-09-19 14:05:08 +10001/*
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
Scott Woodce3edb32007-03-12 14:41:38 -060014#include <stddef.h>
Mark A. Greerb2c5f612006-09-19 14:05:08 +100015#include "types.h"
Scott Wooda07940b2007-03-16 12:27:54 -050016#include "string.h"
Mark A. Greerb2c5f612006-09-19 14:05:08 +100017
18#define COMMAND_LINE_SIZE 512
19#define MAX_PATH_LEN 256
20#define MAX_PROP_LEN 256 /* What should this be? */
21
Geoff Levand62cf6a92007-06-16 08:06:44 +100022typedef void (*kernel_entry_t)(unsigned long r3, unsigned long r4, void *r5);
23
Mark A. Greerb2c5f612006-09-19 14:05:08 +100024/* Platform specific operations */
25struct platform_ops {
26 void (*fixups)(void);
27 void (*image_hdr)(const void *);
Geert Uytterhoeven4ca478e2007-04-18 19:24:12 +100028 void * (*malloc)(unsigned long size);
Mark A. Greerc8885542006-10-16 13:49:27 -070029 void (*free)(void *ptr);
30 void * (*realloc)(void *ptr, unsigned long size);
Mark A. Greerb2c5f612006-09-19 14:05:08 +100031 void (*exit)(void);
David Gibson79c85412007-03-05 14:24:52 +110032 void * (*vmlinux_alloc)(unsigned long size);
Mark A. Greerb2c5f612006-09-19 14:05:08 +100033};
34extern struct platform_ops platform_ops;
35
36/* Device Tree operations */
37struct dt_ops {
38 void * (*finddevice)(const char *name);
Mark A. Greerc8885542006-10-16 13:49:27 -070039 int (*getprop)(const void *phandle, const char *name, void *buf,
Mark A. Greerb2c5f612006-09-19 14:05:08 +100040 const int buflen);
Mark A. Greerc8885542006-10-16 13:49:27 -070041 int (*setprop)(const void *phandle, const char *name,
Mark A. Greerb2c5f612006-09-19 14:05:08 +100042 const void *buf, const int buflen);
Scott Wooda07940b2007-03-16 12:27:54 -050043 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);
David Gibson35af89e2006-11-21 11:37:37 +110049 unsigned long (*finalize)(void);
Scott Wood21f3fe22007-09-06 05:21:12 +100050 char *(*get_path)(const void *phandle, char *buf, int len);
Mark A. Greerb2c5f612006-09-19 14:05:08 +100051};
52extern struct dt_ops dt_ops;
53
54/* Console operations */
55struct console_ops {
56 int (*open)(void);
Geoff Levandb96fbb62007-06-16 08:06:40 +100057 void (*write)(const char *buf, int len);
Mark A. Greerb2c5f612006-09-19 14:05:08 +100058 void (*edit_cmdline)(char *buf, int len);
59 void (*close)(void);
60 void *data;
61};
62extern struct console_ops console_ops;
63
64/* Serial console operations */
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
David Gibsoncd197ff2007-03-05 14:24:52 +110073struct loader_info {
74 void *promptr;
75 unsigned long initrd_addr, initrd_size;
David Gibson3af82a82007-03-22 17:02:21 +110076 char *cmdline;
77 int cmdline_len;
David Gibsoncd197ff2007-03-05 14:24:52 +110078};
79extern struct loader_info loader_info;
80
David Gibsone5a2072b2007-03-22 17:02:21 +110081void start(void);
Mark A. Greerc8885542006-10-16 13:49:27 -070082int 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);
Mark A. Greere12deb82007-05-12 10:54:31 +100085int mpsc_console_init(void *devp, struct serial_console_data *scdp);
Scott Woodd0f53fa2007-08-21 03:39:57 +100086int cpm_console_init(void *devp, struct serial_console_data *scdp);
Grant Likely85498ae2007-09-01 03:34:37 +100087int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp);
Geert Uytterhoeven4ca478e2007-04-18 19:24:12 +100088void *simple_alloc_init(char *base, unsigned long heap_size,
89 unsigned long granularity, unsigned long max_allocs);
Milton Miller0e680672007-03-19 14:58:06 -060090extern void flush_cache(void *, unsigned long);
Mark A. Greer8895ea42007-04-28 06:48:24 +100091int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size);
92int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr);
Scott Wooda73ac502007-08-21 03:39:48 +100093int dt_is_compatible(void *node, const char *compat);
Scott Woode5d8d542007-08-21 03:40:02 +100094void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize);
Mark A. Greerb2c5f612006-09-19 14:05:08 +100095
96static inline void *finddevice(const char *name)
97{
98 return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL;
99}
100
101static inline int getprop(void *devp, const char *name, void *buf, int buflen)
102{
103 return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1;
104}
105
Scott Woodf61e7cd2007-03-16 12:28:49 -0500106static inline int setprop(void *devp, const char *name,
107 const void *buf, int buflen)
Mark A. Greerb2c5f612006-09-19 14:05:08 +1000108{
109 return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1;
110}
David Gibson27fbaa92007-03-22 17:02:21 +1100111#define setprop_val(devp, name, val) \
112 do { \
113 typeof(val) x = (val); \
114 setprop((devp), (name), &x, sizeof(x)); \
115 } while (0)
Mark A. Greerb2c5f612006-09-19 14:05:08 +1000116
Scott Wooda07940b2007-03-16 12:27:54 -0500117static inline int setprop_str(void *devp, const char *name, const char *buf)
118{
119 if (dt_ops.setprop)
120 return dt_ops.setprop(devp, name, buf, strlen(buf) + 1);
121
122 return -1;
123}
124
125static inline void *get_parent(const char *devp)
126{
127 return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL;
128}
129
130static inline void *create_node(const void *parent, const char *name)
131{
132 return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL;
133}
134
135
136static inline void *find_node_by_prop_value(const void *prev,
137 const char *propname,
138 const char *propval, int proplen)
139{
140 if (dt_ops.find_node_by_prop_value)
141 return dt_ops.find_node_by_prop_value(prev, propname,
142 propval, proplen);
143
144 return NULL;
145}
146
147static inline void *find_node_by_prop_value_str(const void *prev,
148 const char *propname,
149 const char *propval)
150{
151 return find_node_by_prop_value(prev, propname, propval,
152 strlen(propval) + 1);
153}
154
155static inline void *find_node_by_devtype(const void *prev,
156 const char *type)
157{
158 return find_node_by_prop_value_str(prev, "device_type", type);
159}
160
David Gibson27fbaa92007-03-22 17:02:21 +1100161void dt_fixup_memory(u64 start, u64 size);
162void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq);
163void dt_fixup_clock(const char *path, u32 freq);
Scott Wood27ff35d2007-09-25 06:09:11 +1000164void dt_fixup_mac_address(u32 index, const u8 *addr);
David Gibson27fbaa92007-03-22 17:02:21 +1100165void __dt_fixup_mac_addresses(u32 startindex, ...);
166#define dt_fixup_mac_addresses(...) \
167 __dt_fixup_mac_addresses(0, __VA_ARGS__, NULL)
168
169
Mark A. Greerd6f1d2a2007-03-27 15:31:41 -0700170static inline void *find_node_by_linuxphandle(const u32 linuxphandle)
171{
172 return find_node_by_prop_value(NULL, "linux,phandle",
173 (char *)&linuxphandle, sizeof(u32));
174}
175
Scott Wood21f3fe22007-09-06 05:21:12 +1000176static inline char *get_path(const void *phandle, char *buf, int len)
177{
178 if (dt_ops.get_path)
179 return dt_ops.get_path(phandle, buf, len);
180
181 return NULL;
182}
183
Geert Uytterhoeven4ca478e2007-04-18 19:24:12 +1000184static inline void *malloc(unsigned long size)
Mark A. Greerb2c5f612006-09-19 14:05:08 +1000185{
186 return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL;
187}
188
Mark A. Greerc8885542006-10-16 13:49:27 -0700189static inline void free(void *ptr)
Mark A. Greerb2c5f612006-09-19 14:05:08 +1000190{
191 if (platform_ops.free)
Mark A. Greerc8885542006-10-16 13:49:27 -0700192 platform_ops.free(ptr);
Mark A. Greerb2c5f612006-09-19 14:05:08 +1000193}
194
195static inline void exit(void)
196{
197 if (platform_ops.exit)
198 platform_ops.exit();
199 for(;;);
200}
Milton Miller6a923212007-03-21 09:02:44 -0600201#define fatal(args...) { printf(args); exit(); }
202
Mark A. Greerb2c5f612006-09-19 14:05:08 +1000203
David Gibsoncd197ff2007-03-05 14:24:52 +1100204#define BSS_STACK(size) \
205 static char _bss_stack[size]; \
206 void *_platform_stack_top = _bss_stack + sizeof(_bss_stack);
207
Scott Wood643d3c12007-08-21 03:39:45 +1000208extern unsigned long timebase_period_ns;
Scott Wood3ee9b7a2007-08-21 03:39:55 +1000209void udelay(long delay);
Scott Wood643d3c12007-08-21 03:39:45 +1000210
Scott Wood2f1d4892007-08-21 03:39:58 +1000211extern char _start[];
212extern char __bss_start[];
213extern char _end[];
214extern char _vmlinux_start[];
215extern char _vmlinux_end[];
216extern char _initrd_start[];
217extern char _initrd_end[];
218extern char _dtb_start[];
219extern char _dtb_end[];
220
Scott Woode5d8d542007-08-21 03:40:02 +1000221static inline __attribute__((const))
222int __ilog2_u32(u32 n)
223{
224 int bit;
225 asm ("cntlzw %0,%1" : "=r" (bit) : "r" (n));
226 return 31 - bit;
227}
228
Mark A. Greerb2c5f612006-09-19 14:05:08 +1000229#endif /* _PPC_BOOT_OPS_H_ */