120 строки
3.0 KiB
C
120 строки
3.0 KiB
C
|
/*
|
||
|
|
* Copyright © 2011 Tony Breeds IBM Corporation
|
||
|
|
*
|
||
|
|
* Based on earlier code:
|
||
|
|
* Copyright (C) Paul Mackerras 1997.
|
||
|
|
*
|
||
|
|
* Matt Porter <mporter@kernel.crashing.org>
|
||
|
|
* Copyright 2002-2005 MontaVista Software Inc.
|
||
|
|
*
|
||
|
|
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
|
||
|
|
* Copyright (c) 2003, 2004 Zultys Technologies
|
||
|
|
*
|
||
|
|
* Copyright 2007 David Gibson, IBM Corporation.
|
||
|
|
* Copyright 2010 Ben. Herrenschmidt, IBM Corporation.
|
||
|
|
* Copyright © 2011 David Kleikamp IBM Corporation
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
#include <stdarg.h>
|
||
|
|
#include <stddef.h>
|
||
|
|
#include "types.h"
|
||
|
|
#include "elf.h"
|
||
|
|
#include "string.h"
|
||
|
|
#include "stdio.h"
|
||
|
|
#include "page.h"
|
||
|
|
#include "ops.h"
|
||
|
|
#include "reg.h"
|
||
|
|
#include "io.h"
|
||
|
|
#include "dcr.h"
|
||
|
|
#include "4xx.h"
|
||
|
|
#include "44x.h"
|
||
|
|
#include "libfdt.h"
|
||
|
|
|
||
|
|
BSS_STACK(4096);
|
||
|
|
|
||
|
|
#define MAX_RANKS 0x4
|
||
|
|
#define DDR3_MR0CF 0x80010011U
|
||
|
|
|
||
|
|
static unsigned long long ibm_currituck_memsize;
|
||
|
|
static unsigned long long ibm_currituck_detect_memsize(void)
|
||
|
|
{
|
||
|
|
u32 reg;
|
||
|
|
unsigned i;
|
||
|
|
unsigned long long memsize = 0;
|
||
|
|
|
||
|
|
for(i = 0; i < MAX_RANKS; i++){
|
||
|
|
reg = mfdcrx(DDR3_MR0CF + i);
|
||
|
|
|
||
|
|
if (!(reg & 1))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
reg &= 0x0000f000;
|
||
|
|
reg >>= 12;
|
||
|
|
memsize += (0x800000ULL << reg);
|
||
|
|
}
|
||
|
|
|
||
|
|
return memsize;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ibm_currituck_fixups(void)
|
||
|
|
{
|
||
|
|
void *devp = finddevice("/");
|
||
|
|
u32 dma_ranges[7];
|
||
|
|
|
||
|
|
dt_fixup_memory(0x0ULL, ibm_currituck_memsize);
|
||
|
|
|
||
|
|
while ((devp = find_node_by_devtype(devp, "pci"))) {
|
||
|
|
if (getprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)) < 0) {
|
||
|
|
printf("%s: Failed to get dma-ranges\r\n", __func__);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
dma_ranges[5] = ibm_currituck_memsize >> 32;
|
||
|
|
dma_ranges[6] = ibm_currituck_memsize & 0xffffffffUL;
|
||
|
|
|
||
|
|
setprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#define SPRN_PIR 0x11E /* Processor Indentification Register */
|
||
|
|
void platform_init(void)
|
||
|
|
{
|
||
|
|
unsigned long end_of_ram, avail_ram;
|
||
|
|
u32 pir_reg;
|
||
|
|
int node, size;
|
||
|
|
const u32 *timebase;
|
||
|
|
|
||
|
|
ibm_currituck_memsize = ibm_currituck_detect_memsize();
|
||
|
|
if (ibm_currituck_memsize >> 32)
|
||
|
|
end_of_ram = ~0UL;
|
||
|
|
else
|
||
|
|
end_of_ram = ibm_currituck_memsize;
|
||
|
|
avail_ram = end_of_ram - (unsigned long)_end;
|
||
|
|
|
||
|
|
simple_alloc_init(_end, avail_ram, 128, 64);
|
||
|
|
platform_ops.fixups = ibm_currituck_fixups;
|
||
|
|
platform_ops.exit = ibm44x_dbcr_reset;
|
||
|
|
pir_reg = mfspr(SPRN_PIR);
|
||
|
|
|
||
|
|
/* Make sure FDT blob is sane */
|
||
|
|
if (fdt_check_header(_dtb_start) != 0)
|
||
|
|
fatal("Invalid device tree blob\n");
|
||
|
|
|
||
|
|
node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type",
|
||
|
|
"cpu", sizeof("cpu"));
|
||
|
|
if (!node)
|
||
|
|
fatal("Cannot find cpu node\n");
|
||
|
|
timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size);
|
||
|
|
if (timebase && (size == 4))
|
||
|
|
timebase_period_ns = 1000000000 / *timebase;
|
||
|
|
|
||
|
|
fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);
|
||
|
|
fdt_init(_dtb_start);
|
||
|
|
|
||
|
|
serial_console_init();
|
||
|
|
}
|