/*
* linux/arch/powerpc/platforms/cell/cell_setup.c
*
* Copyright (C) 1995 Linus Torvalds
* Adapted from 'alpha' version by Gary Thomas
* Modified by Cort Dougan (cort@cs.nmt.edu)
* Modified by PPC64 Team, IBM Corp
* Modified by Cell Team, IBM Deutschland Entwicklung GmbH
*
* 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.
*/
#undef DEBUG
#include <linux/config.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/slab.h>
#include <linux/user.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/console.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm/kexec.h>
#include <asm/pgtable.h>
#include <asm/prom.h>
#include <asm/rtas.h>
#include <asm/pci-bridge.h>
#include <asm/iommu.h>
#include <asm/dma.h>
#include <asm/machdep.h>
#include <asm/time.h>
#include <asm/nvram.h>
#include <asm/cputable.h>
#include <asm/ppc-pci.h>
#include <asm/irq.h>
#include "interrupt.h"
#include "iommu.h"
#include "pervasive.h"
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif
static void cell_show_cpuinfo(struct seq_file *m)
{
struct device_node *root;
const char *model = "";
root = of_find_node_by_path("/");
if (root)
model = get_property(root, "model", NULL);
seq_printf(m, "machine\t\t: CHRP %s\n", model);
of_node_put(root);
}
#ifdef CONFIG_SPARSEMEM
static int __init find_spu_node_id(struct device_node *spe)
{
unsigned int *id;
#ifdef CONFIG_NUMA
struct device_node *cpu;
cpu = spe->parent->parent;
id = (unsigned int *)get_property(cpu, "node-id", NULL);
#else
id = NULL;
#endif
return id ? *id : 0;
}
static void __init cell_spuprop_present(struct device_node *spe,
const char *prop, int early)
{
struct address_prop {
unsigned long address;
unsigned int len;
} __attribute__((packed)) *p;
int proplen;
unsigned long start_pfn, end_pfn, pfn;
int node_id;
p = (void*)get_property(spe, prop, &proplen);
WARN_ON(proplen != sizeof (*p));
node_id = find_spu_node_id(spe);
start_pfn = p->address >> PAGE_SHIFT;
end_pfn = (p->address + p->len + PAGE_SIZE - 1) >> PAGE_SHIFT;
/* We need to call memory_present *before* the call to sparse_init,
but we can initialize the page structs only *after* that call.
Thus, we're being called twice. */
if (early)
memory_present(node_id, start_pfn, end_pfn);
else {
/* As the pages backing SPU LS and I/O are outside the range
of regular memory, their page structs were not initialized
by free_area_init. Do it here instead. */
for (pfn = start_pfn; pfn < end_pfn; pfn++) {
struct page *page = pfn_to_page(pfn);
set_page_links(page, ZONE_DMA, node_id, pfn);
init_page_count(page);
reset_page_mapcount(page);
SetPageReserved(page);
INIT_LIST_HEAD(&page->lru);
}
}
}
static void __init cell_spumem_init(int early)
{
struct device_node *node;
for (node = of_find_node_by_type(NULL, "spe");
node; node = of_find_node_by_type(node, "spe")) {
cell_spuprop_present(node, "local-store", early);
cell_spuprop_present(node, "problem", early);
cell_spuprop_present(node, "priv1", early);
cell_spuprop_present(node, "priv2", early);
}
}
#else
static void __init cell_spumem_init(int early)
{
}
#endif
static void cell_progress(char *s, unsigned short hex)
{
printk("*** %04x : %s\n", hex, s ? s : "");
}
static void __init cell_setup_arch(void)
{
ppc_md.init_IRQ = iic_init_IRQ;
ppc_md.get_irq = iic_get_irq;
#ifdef CONFIG_SMP
smp_init_cell();
#endif
/* init to some ~sane value until calibrate_delay() runs */
loops_per_jiffy = 50000000;
if (ROOT_DEV == 0) {
printk("No ramdisk, default root is /dev/hda2\n");
ROOT_DEV = Root_HDA2;
}
/* Find and initialize PCI host bridges */
init_pci_config_tokens();
find_and_init_phbs();
spider_init_IRQ();
cell_pervasive_init();
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
mmio_nvram_init();
cell_spumem_init(0);
}
/*
* Early initialization. Relocation is on but do not reference unbolted pages
*/
static void __init cell_init_early(void)
{
DBG(" -> cell_init_early()\n");
hpte_init_native();
cell_init_iommu();
ppc64_interrupt_controller = IC_CELL_PIC;
cell_spumem_init(1);
DBG(" <- cell_init_early()\n");
}
static int __init cell_probe(void)
{
/* XXX This is temporary, the Cell maintainer will come up with
* more appropriate detection logic
*/
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
return 0;
return 1;
}
/*
* Cell has no legacy IO; anything calling this function has to
* fail or bad things will happen
*/
static int cell_check_legacy_ioport(unsigned int baseport)
{
return -ENODEV;
}
define_machine(cell) {
.name = "Cell",
.probe = cell_probe,
.setup_arch = cell_setup_arch,
.init_early = cell_init_early,
.show_cpuinfo = cell_show_cpuinfo,
.restart = rtas_restart,
.power_off = rtas_power_off,
.halt = rtas_halt,
.get_boot_time = rtas_get_boot_time,
.get_rtc_time = rtas_get_rtc_time,
.set_rtc_time = rtas_set_rtc_time,
.calibrate_decr = generic_calibrate_decr,
.check_legacy_ioport = cell_check_legacy_ioport,
.progress = cell_progress,
#ifdef CONFIG_KEXEC
.machine_kexec = default_machine_kexec,
.machine_kexec_prepare = default_machine_kexec_prepare,
.machine_crash_shutdown = default_machine_crash_shutdown,
#endif
};
