mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 06:46:59 +07:00
446957ba51
Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
/*
|
|
* Copyright 2010 Ben. Herrenschmidt, 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.
|
|
*
|
|
* 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);
|
|
|
|
static u32 ibm4xx_memstart;
|
|
|
|
static void iss_4xx_fixups(void)
|
|
{
|
|
void *memory;
|
|
u32 reg[3];
|
|
|
|
memory = finddevice("/memory");
|
|
if (!memory)
|
|
fatal("Can't find memory node\n");
|
|
/* This assumes #address-cells = 2, #size-cells =1 and that */
|
|
getprop(memory, "reg", reg, sizeof(reg));
|
|
if (reg[2])
|
|
/* If the device tree specifies the memory range, use it */
|
|
ibm4xx_memstart = reg[1];
|
|
else
|
|
/* othersize, read it from the SDRAM controller */
|
|
ibm4xx_sdram_fixup_memsize();
|
|
}
|
|
|
|
static void *iss_4xx_vmlinux_alloc(unsigned long size)
|
|
{
|
|
return (void *)ibm4xx_memstart;
|
|
}
|
|
|
|
#define SPRN_PIR 0x11E /* Processor Identification Register */
|
|
void platform_init(void)
|
|
{
|
|
unsigned long end_of_ram = 0x08000000;
|
|
unsigned long avail_ram = end_of_ram - (unsigned long)_end;
|
|
u32 pir_reg;
|
|
|
|
simple_alloc_init(_end, avail_ram, 128, 64);
|
|
platform_ops.fixups = iss_4xx_fixups;
|
|
platform_ops.vmlinux_alloc = iss_4xx_vmlinux_alloc;
|
|
platform_ops.exit = ibm44x_dbcr_reset;
|
|
pir_reg = mfspr(SPRN_PIR);
|
|
fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);
|
|
fdt_init(_dtb_start);
|
|
serial_console_init();
|
|
}
|