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267 lines
7.6 KiB
267 lines
7.6 KiB
/* |
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* Global definition of all the bootwrapper operations. |
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* |
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* Author: Mark A. Greer <[email protected]> |
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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 BOOT_COMMAND_LINE_SIZE 2048 |
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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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void (*kentry)(unsigned long fdt_addr, void *vmlinux_addr); |
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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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int (*del_node)(const void *phandle); |
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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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void *(*find_node_by_compatible)(const void *prev, |
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const char *compat); |
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unsigned long (*finalize)(void); |
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char *(*get_path)(const void *phandle, char *buf, int len); |
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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, unsigned int getline_timeout); |
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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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void fdt_init(void *blob); |
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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 cpm_console_init(void *devp, struct serial_console_data *scdp); |
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int mpc5200_psc_console_init(void *devp, struct serial_console_data *scdp); |
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int opal_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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int dt_get_virtual_reg(void *node, void **addr, int nres); |
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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 int del_node(const void *devp) |
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{ |
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return dt_ops.del_node ? dt_ops.del_node(devp) : -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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static inline void *find_node_by_alias(const char *alias) |
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{ |
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void *devp = finddevice("/aliases"); |
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if (devp) { |
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char path[MAX_PATH_LEN]; |
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if (getprop(devp, alias, path, MAX_PATH_LEN) > 0) |
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return finddevice(path); |
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} |
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return NULL; |
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} |
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static inline void *find_node_by_compatible(const void *prev, |
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const char *compat) |
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{ |
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if (dt_ops.find_node_by_compatible) |
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return dt_ops.find_node_by_compatible(prev, compat); |
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return NULL; |
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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_address_by_alias(const char *alias, const u8 *addr); |
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void dt_fixup_mac_address(u32 index, const u8 *addr); |
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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 char *get_path(const void *phandle, char *buf, int len) |
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{ |
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if (dt_ops.get_path) |
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return dt_ops.get_path(phandle, buf, len); |
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return NULL; |
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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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extern char _esm_blob_start[]; |
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extern char _esm_blob_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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long partial_decompress(void *inbuf, unsigned long input_size, void *outbuf, |
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unsigned long output_size, unsigned long skip); |
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#endif /* _PPC_BOOT_OPS_H_ */
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