219 lines
6.2 KiB
C
219 lines
6.2 KiB
C
/*
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* Global definition of all the bootwrapper operations.
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*
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* Author: Mark A. Greer <mgreer@mvista.com>
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*
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* 2006 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#ifndef _PPC_BOOT_OPS_H_
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#define _PPC_BOOT_OPS_H_
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#include <stddef.h>
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#include "types.h"
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#include "string.h"
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#define COMMAND_LINE_SIZE 512
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#define MAX_PATH_LEN 256
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#define MAX_PROP_LEN 256 /* What should this be? */
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typedef void (*kernel_entry_t)(unsigned long r3, unsigned long r4, void *r5);
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/* Platform specific operations */
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struct platform_ops {
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void (*fixups)(void);
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void (*image_hdr)(const void *);
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void * (*malloc)(unsigned long size);
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void (*free)(void *ptr);
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void * (*realloc)(void *ptr, unsigned long size);
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void (*exit)(void);
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void * (*vmlinux_alloc)(unsigned long size);
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};
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extern struct platform_ops platform_ops;
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/* Device Tree operations */
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struct dt_ops {
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void * (*finddevice)(const char *name);
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int (*getprop)(const void *phandle, const char *name, void *buf,
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const int buflen);
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int (*setprop)(const void *phandle, const char *name,
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const void *buf, const int buflen);
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void *(*get_parent)(const void *phandle);
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/* The node must not already exist. */
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void *(*create_node)(const void *parent, const char *name);
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void *(*find_node_by_prop_value)(const void *prev,
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const char *propname,
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const char *propval, int proplen);
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unsigned long (*finalize)(void);
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};
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extern struct dt_ops dt_ops;
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/* Console operations */
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struct console_ops {
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int (*open)(void);
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void (*write)(const char *buf, int len);
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void (*edit_cmdline)(char *buf, int len);
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void (*close)(void);
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void *data;
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};
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extern struct console_ops console_ops;
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/* Serial console operations */
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struct serial_console_data {
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int (*open)(void);
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void (*putc)(unsigned char c);
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unsigned char (*getc)(void);
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u8 (*tstc)(void);
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void (*close)(void);
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};
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struct loader_info {
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void *promptr;
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unsigned long initrd_addr, initrd_size;
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char *cmdline;
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int cmdline_len;
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};
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extern struct loader_info loader_info;
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void start(void);
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int ft_init(void *dt_blob, unsigned int max_size, unsigned int max_find_device);
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int serial_console_init(void);
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int ns16550_console_init(void *devp, struct serial_console_data *scdp);
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int mpsc_console_init(void *devp, struct serial_console_data *scdp);
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int cpm_console_init(void *devp, struct serial_console_data *scdp);
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void *simple_alloc_init(char *base, unsigned long heap_size,
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unsigned long granularity, unsigned long max_allocs);
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extern void flush_cache(void *, unsigned long);
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int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size);
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int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr);
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int dt_is_compatible(void *node, const char *compat);
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void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize);
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static inline void *finddevice(const char *name)
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{
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return (dt_ops.finddevice) ? dt_ops.finddevice(name) : NULL;
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}
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static inline int getprop(void *devp, const char *name, void *buf, int buflen)
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{
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return (dt_ops.getprop) ? dt_ops.getprop(devp, name, buf, buflen) : -1;
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}
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static inline int setprop(void *devp, const char *name,
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const void *buf, int buflen)
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{
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return (dt_ops.setprop) ? dt_ops.setprop(devp, name, buf, buflen) : -1;
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}
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#define setprop_val(devp, name, val) \
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do { \
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typeof(val) x = (val); \
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setprop((devp), (name), &x, sizeof(x)); \
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} while (0)
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static inline int setprop_str(void *devp, const char *name, const char *buf)
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{
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if (dt_ops.setprop)
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return dt_ops.setprop(devp, name, buf, strlen(buf) + 1);
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return -1;
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}
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static inline void *get_parent(const char *devp)
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{
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return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL;
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}
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static inline void *create_node(const void *parent, const char *name)
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{
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return dt_ops.create_node ? dt_ops.create_node(parent, name) : NULL;
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}
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static inline void *find_node_by_prop_value(const void *prev,
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const char *propname,
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const char *propval, int proplen)
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{
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if (dt_ops.find_node_by_prop_value)
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return dt_ops.find_node_by_prop_value(prev, propname,
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propval, proplen);
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return NULL;
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}
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static inline void *find_node_by_prop_value_str(const void *prev,
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const char *propname,
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const char *propval)
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{
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return find_node_by_prop_value(prev, propname, propval,
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strlen(propval) + 1);
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}
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static inline void *find_node_by_devtype(const void *prev,
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const char *type)
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{
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return find_node_by_prop_value_str(prev, "device_type", type);
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}
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void dt_fixup_memory(u64 start, u64 size);
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void dt_fixup_cpu_clocks(u32 cpufreq, u32 tbfreq, u32 busfreq);
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void dt_fixup_clock(const char *path, u32 freq);
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void __dt_fixup_mac_addresses(u32 startindex, ...);
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#define dt_fixup_mac_addresses(...) \
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__dt_fixup_mac_addresses(0, __VA_ARGS__, NULL)
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static inline void *find_node_by_linuxphandle(const u32 linuxphandle)
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{
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return find_node_by_prop_value(NULL, "linux,phandle",
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(char *)&linuxphandle, sizeof(u32));
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}
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static inline void *malloc(unsigned long size)
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{
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return (platform_ops.malloc) ? platform_ops.malloc(size) : NULL;
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}
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static inline void free(void *ptr)
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{
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if (platform_ops.free)
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platform_ops.free(ptr);
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}
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static inline void exit(void)
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{
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if (platform_ops.exit)
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platform_ops.exit();
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for(;;);
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}
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#define fatal(args...) { printf(args); exit(); }
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#define BSS_STACK(size) \
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static char _bss_stack[size]; \
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void *_platform_stack_top = _bss_stack + sizeof(_bss_stack);
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extern unsigned long timebase_period_ns;
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void udelay(long delay);
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extern char _start[];
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extern char __bss_start[];
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extern char _end[];
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extern char _vmlinux_start[];
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extern char _vmlinux_end[];
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extern char _initrd_start[];
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extern char _initrd_end[];
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extern char _dtb_start[];
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extern char _dtb_end[];
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static inline __attribute__((const))
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int __ilog2_u32(u32 n)
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{
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int bit;
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asm ("cntlzw %0,%1" : "=r" (bit) : "r" (n));
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return 31 - bit;
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}
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#endif /* _PPC_BOOT_OPS_H_ */
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