70 строки
1.9 KiB
C
70 строки
1.9 KiB
C
|
/*
|
||
|
|
* Old U-boot compatibility for 85xx
|
||
|
|
*
|
||
|
|
* Author: Scott Wood <scottwood@freescale.com>
|
||
|
|
*
|
||
|
|
* Copyright (c) 2007 Freescale Semiconductor, Inc.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms of the GNU General Public License version 2 as published
|
||
|
|
* by the Free Software Foundation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "ops.h"
|
||
|
|
#include "stdio.h"
|
||
|
|
|
||
|
|
#define TARGET_85xx
|
||
|
|
#include "ppcboot.h"
|
||
|
|
|
||
|
|
static bd_t bd;
|
||
|
|
extern char _end[];
|
||
|
|
extern char _dtb_start[], _dtb_end[];
|
||
|
|
|
||
|
|
static void platform_fixups(void)
|
||
|
|
{
|
||
|
|
void *soc;
|
||
|
|
|
||
|
|
dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
|
||
|
|
dt_fixup_mac_addresses(bd.bi_enetaddr, bd.bi_enet1addr,
|
||
|
|
bd.bi_enet2addr);
|
||
|
|
dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 8, bd.bi_busfreq);
|
||
|
|
|
||
|
|
/* Unfortunately, the specific model number is encoded in the
|
||
|
|
* soc node name in existing dts files -- once that is fixed,
|
||
|
|
* this can do a simple path lookup.
|
||
|
|
*/
|
||
|
|
soc = find_node_by_devtype(NULL, "soc");
|
||
|
|
if (soc) {
|
||
|
|
void *serial = NULL;
|
||
|
|
|
||
|
|
setprop(soc, "bus-frequency", &bd.bi_busfreq,
|
||
|
|
sizeof(bd.bi_busfreq));
|
||
|
|
|
||
|
|
while ((serial = find_node_by_devtype(serial, "serial"))) {
|
||
|
|
if (get_parent(serial) != soc)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
setprop(serial, "clock-frequency", &bd.bi_busfreq,
|
||
|
|
sizeof(bd.bi_busfreq));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
|
||
|
|
unsigned long r6, unsigned long r7)
|
||
|
|
{
|
||
|
|
unsigned long end_of_ram = bd.bi_memstart + bd.bi_memsize;
|
||
|
|
unsigned long avail_ram = end_of_ram - (unsigned long)_end;
|
||
|
|
|
||
|
|
memcpy(&bd, (bd_t *)r3, sizeof(bd));
|
||
|
|
loader_info.initrd_addr = r4;
|
||
|
|
loader_info.initrd_size = r4 ? r5 : 0;
|
||
|
|
loader_info.cmdline = (char *)r6;
|
||
|
|
loader_info.cmdline_len = r7 - r6;
|
||
|
|
|
||
|
|
simple_alloc_init(_end, avail_ram - 1024*1024, 32, 64);
|
||
|
|
ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
|
||
|
|
serial_console_init();
|
||
|
|
platform_ops.fixups = platform_fixups;
|
||
|
|
}
|