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/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef _BAREBOX_ARM_H_
#define _BAREBOX_ARM_H_
#include <linux/sizes.h>
#include <asm-generic/memory_layout.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/compiler.h>
#include <asm/barebox-arm-head.h>
/* cpu/.../cpu.c */
int cleanup_before_linux(void);
/* arch/<arch>board(s)/.../... */
int board_init(void);
int dram_init (void);
extern char __exceptions_start[], __exceptions_stop[];
void board_init_lowlevel(void);
uint32_t get_runtime_offset(void);
void setup_c(void);
void relocate_to_current_adr(void);
void relocate_to_adr(unsigned long target);
void __noreturn barebox_arm_entry(unsigned long membase, unsigned long memsize, void *boarddata);
struct barebox_arm_boarddata {
#define BAREBOX_ARM_BOARDDATA_MAGIC 0xabe742c3
u32 magic;
u32 machine; /* machine number to pass to barebox. This may or may
* not be a ARM machine number registered on arm.linux.org.uk.
* It must only be unique across barebox. Please use a number
* that do not potientially clashes with registered machines,
* i.e. use a number > 0x10000.
*/
};
/*
* Create a boarddata struct at given address. Suitable to be passed
* as boarddata to barebox_arm_entry(). The machine can be retrieved
* later with barebox_arm_machine().
*/
static inline void boarddata_create(void *adr, u32 machine)
{
struct barebox_arm_boarddata *bd = adr;
bd->magic = BAREBOX_ARM_BOARDDATA_MAGIC;
bd->machine = machine;
}
u32 barebox_arm_machine(void);
struct barebox_arm_boarddata_compressed_dtb {
#define BAREBOX_ARM_BOARDDATA_COMPRESSED_DTB_MAGIC 0x7b66bcbd
u32 magic;
u32 datalen;
u32 datalen_uncompressed;
};
struct barebox_arm_boarddata *barebox_arm_get_boarddata(void);
#if defined(CONFIG_RELOCATABLE) && defined(CONFIG_ARM_EXCEPTIONS)
void arm_fixup_vectors(void);
#else
static inline void arm_fixup_vectors(void)
{
}
#endif
void *barebox_arm_boot_dtb(void);
/*
* For relocatable binaries find a suitable start address for the
* relocated binary. Beginning at the memory end substract the reserved
* space and round down a bit at the end. This is used by the pbl to
* extract the image to a suitable place so that the uncompressed image
* does not have to copy itself to another place. Also it's used by
* the uncompressed image to relocate itself to the same place.
*/
static inline unsigned long arm_barebox_image_place(unsigned long endmem)
{
endmem -= STACK_SIZE;
endmem -= SZ_32K; /* ttb */
endmem -= SZ_128K; /* early malloc */
endmem -= SZ_1M; /* place for barebox image */
/*
* round down to make translating the objdump easier
*/
endmem &= ~(SZ_1M - 1);
return endmem;
}
#define ENTRY_FUNCTION(name, arg0, arg1, arg2) \
static void __##name(uint32_t, uint32_t, uint32_t); \
\
void __naked __section(.text_head_entry_##name) name \
(uint32_t r0, uint32_t r1, uint32_t r2) \
{ \
__barebox_arm_head(); \
__##name(r0, r1, r2); \
} \
static void __naked noinline __##name \
(uint32_t arg0, uint32_t arg1, uint32_t arg2)
#endif /* _BAREBOX_ARM_H_ */
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