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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2021 Aidan MacDonald
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __BOOT_X1000_H__
#define __BOOT_X1000_H__
#include "x1000/cpm.h"
#include <stdbool.h>
#include <stdint.h>
#include <stddef.h>
enum {
/* Set after running clk_init() and setting up system clocks */
BOOT_FLAG_CLK_INIT = (1 << 31),
/* Set by the SPL if it was loaded over USB boot */
BOOT_FLAG_USB_BOOT = (1 << 30),
};
void x1000_boot_rockbox(const void* source, size_t length)
__attribute__((section(".icode")));
void x1000_boot_linux(const void* source, size_t length,
void* load, void* entry, const char* args)
__attribute__((section(".icode")));
/* dual boot support code */
void x1000_dualboot_cleanup(void);
void x1000_dualboot_init_clocktree(void);
void x1000_dualboot_init_uart2(void);
int x1000_dualboot_load_pdma_fw(void);
/* Note: these functions are inlined to minimize SPL code size.
* They are private to the X1000 early boot code anyway... */
static inline void cpm_scratch_set(uint32_t value)
{
/* TODO: see if this holds its state over a WDT reset */
REG_CPM_SCRATCH_PROT = 0x5a5a;
REG_CPM_SCRATCH = value;
REG_CPM_SCRATCH_PROT = 0xa5a5;
}
static inline void init_boot_flags(void)
{
cpm_scratch_set(0);
}
static inline bool get_boot_flag(uint32_t bit)
{
return (REG_CPM_SCRATCH & bit) != 0;
}
static inline void set_boot_flag(uint32_t bit)
{
cpm_scratch_set(REG_CPM_SCRATCH | bit);
}
static inline void clr_boot_flag(uint32_t bit)
{
cpm_scratch_set(REG_CPM_SCRATCH & ~bit);
}
#endif /* __BOOT_X1000_H__ */
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