/*
* include/asm-ppc/bloader.h -- Include file for bootloader.
*
* Copyright (C) 1998 Gabriel Paubert, paubert@iram.es
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
* for more details.
*/
#ifndef _PPC_BOOTLDR_H
#define _PPC_BOOTLDR_H
#ifndef ASM
#include <bsp/residual.h>
#include <bsp/consoleIo.h>
#include "pci.h"
#define abs __builtin_abs
#define PTE_REFD 0x100
#define PTE_CHNG (0x80|PTE_REFD) /* Modified implies referenced */
#define PTE_WTHR 0x040
#define PTE_CINH 0x020
#define PTE_COHER 0x010
#define PTE_GUAR 0x008
#define PTE_RO 0x003
#define PTE_RW 0x002
#define PTE_RAM (PTE_CHNG|PTE_COHER|PTE_RW)
#define PTE_ROM (PTE_REFD|PTE_RO)
#define PTE_IO (PTE_CHNG|PTE_CINH|PTE_GUAR|PTE_RW)
typedef struct {}opaque;
/* The context passed during MMU interrupts. */
typedef struct _ctxt {
u_long lr, ctr;
u_int cr, xer;
u_long nip, msr;
u_long regs[32];
} ctxt;
/* The main structure which is pointed to permanently by r13. Things
* are not separated very well between parts because it would cause
* too much code bloat for such a simple program like the bootloader.
* The code is designed to be compiled with the -m relocatable option and
* tries to minimize the number of relocations/fixups and the number of
* functions who have to access the .got2 sections (this increases the
* size of the prologue in every function).
*/
typedef struct _boot_data {
RESIDUAL *residual;
void *load_address;
void *of_entry;
void *r6, *r7, *r8, *r9, *r10;
u_long cache_lsize;
void *image; /* Where to copy ourselves */
void *stack;
void *mover; /* where to copy codemove to avoid overlays */
u_long o_msr, o_hid0, o_r31;
opaque * mm_private;
const struct pci_config_access_functions * pci_functions;
opaque * pci_private;
struct pci_dev * pci_devices;
opaque * v86_private;
char cmd_line[256];
} boot_data;
register boot_data *bd __asm__("r13");
extern inline int
pcibios_read_config_byte(u_char bus, u_char dev_fn,
u_char where, u_char * val) {
return bd->pci_functions->read_config_byte(bus, dev_fn, where, val);
}
extern inline int
pcibios_read_config_word(u_char bus, u_char dev_fn,
u_char where, u_short * val) {
return bd->pci_functions->read_config_word(bus, dev_fn, where, val);
}
extern inline int
pcibios_read_config_dword(u_char bus, u_char dev_fn,
u_char where, u_int * val) {
return bd->pci_functions->read_config_dword(bus, dev_fn, where, val);
}
extern inline int
pcibios_write_config_byte(u_char bus, u_char dev_fn,
u_char where, u_char val) {
return bd->pci_functions->write_config_byte(bus, dev_fn, where, val);
}
extern inline int
pcibios_write_config_word(u_char bus, u_char dev_fn,
u_char where, u_short val) {
return bd->pci_functions->write_config_word(bus, dev_fn, where, val);
}
extern inline int
pcibios_write_config_dword(u_char bus, u_char dev_fn,
u_char where, u_int val) {
return bd->pci_functions->write_config_dword(bus, dev_fn, where, val);
}
extern inline int
pci_read_config_byte(struct pci_dev *dev, u_char where, u_char * val) {
return bd->pci_functions->read_config_byte(dev->bus->number,
dev->devfn,
where, val);
}
extern inline int
pci_read_config_word(struct pci_dev *dev, u_char where, u_short * val) {
return bd->pci_functions->read_config_word(dev->bus->number,
dev->devfn,
where, val);
}
extern inline int
pci_read_config_dword(struct pci_dev *dev, u_char where, u_int * val) {
return bd->pci_functions->read_config_dword(dev->bus->number,
dev->devfn,
where, val);
}
extern inline int
pci_write_config_byte(struct pci_dev *dev, u_char where, u_char val) {
return bd->pci_functions->write_config_byte(dev->bus->number,
dev->devfn,
where, val);
}
extern inline int
pci_write_config_word(struct pci_dev *dev, u_char where, u_short val) {
return bd->pci_functions->write_config_word(dev->bus->number,
dev->devfn,
where, val);
}
extern inline int
pci_write_config_dword(struct pci_dev *dev, u_char where, u_int val) {
return bd->pci_functions->write_config_dword(dev->bus->number,
dev->devfn,
where, val);
}
/* codemove is like memmove, but it also gets the cache line size
* as 4th parameter to synchronize them. If this last parameter is
* zero, it performs more or less like memmove. No copy is performed if
* source and destination addresses are equal. However the caches
* are synchronized. Note that the size is always rounded up to the
* next mutiple of 4.
*/
extern void * codemove(void *, const void *, size_t, unsigned long);
/* The physical memory allocator allows to align memory by
* powers of 2 given by the lower order bits of flags.
* By default it allocates from higher addresses towrds lower ones,
* setting PA_LOW reverses this behaviour.
*/
#define palloc(size) __palloc(size,0)
#define isa_io_base (bd->io_base)
void * __palloc(u_long, int);
void pfree(void *);
#define PA_LOW 0x100
#define PA_PERM 0x200 /* Not freeable by pfree */
#define PA_SUBALLOC 0x400 /* Allocate for suballocation by salloc */
#define PA_ALIGN_MASK 0x1f
void * valloc(u_long size);
void vfree(void *);
int vmap(void *, u_long, u_long);
void vunmap(void *);
void * salloc(u_long size);
void sfree(void *);
void pci_init(void);
void * memset(void *p, int c, size_t n);
void gunzip(void *, int, unsigned char *, int *);
void print_all_maps(const char *);
void print_hash_table(void);
void MMUon(void);
void MMUoff(void);
void hang(const char *, u_long, ctxt *) __attribute__((noreturn));
int init_v86(void);
void cleanup_v86_mess(void);
void em86_main(struct pci_dev *);
int find_max_mem(struct pci_dev *);
#endif
#ifdef ASM
/* These definitions simplify the ugly declarations necessary for
* GOT definitions.
*/
#define GOT_ENTRY(NAME) .L_ ## NAME = . - .LCTOC1 ; .long NAME
#define GOT(NAME) .L_ ## NAME (r30)
#define START_GOT \
.section ".got2","aw"; \
.LCTOC1 = .+ 0x8000
#define END_GOT \
.text
#define GET_GOT \
bl 1f; \
.text 2; \
0: .long .LCTOC1-1f; \
.text ; \
1: mflr r30; \
lwz r0,0b-1b(r30); \
add r30,r0,r30
#define bd r13
#define cache_lsize 32 /* Offset into bd area */
#define image 36
#define stack 40
#define mover 44
#define o_msr 48
#define o_hid0 52
#define o_r31 56
/* Stack offsets for saved registers on exceptions */
#define save_lr 8(r1)
#define save_ctr 12(r1)
#define save_cr 16(r1)
#define save_xer 20(r1)
#define save_nip 24(r1)
#define save_msr 28(r1)
#define save_r(n) 32+4*n(r1)
#endif
#endif
