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// SPDX-License-Identifier: GPL-2.0-only
/*
* PS3 platform setup routines.
*
* Copyright (C) 2006 Sony Computer Entertainment Inc.
* Copyright 2006 Sony Corp.
*/
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/root_dev.h>
#include <linux/console.h>
#include <linux/export.h>
#include <linux/memblock.h>
#include <linux/of.h>
#include <asm/machdep.h>
#include <asm/firmware.h>
#include <asm/time.h>
#include <asm/iommu.h>
#include <asm/udbg.h>
#include <asm/lv1call.h>
#include <asm/ps3gpu.h>
#include "platform.h"
#if defined(DEBUG)
#define DBG udbg_printf
#else
#define DBG pr_debug
#endif
/* mutex synchronizing GPU accesses and video mode changes */
DEFINE_MUTEX(ps3_gpu_mutex);
EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
static union ps3_firmware_version ps3_firmware_version;
static char ps3_firmware_version_str[16];
void ps3_get_firmware_version(union ps3_firmware_version *v)
{
*v = ps3_firmware_version;
}
EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
{
union ps3_firmware_version x;
x.pad = 0;
x.major = major;
x.minor = minor;
x.rev = rev;
return (ps3_firmware_version.raw > x.raw) -
(ps3_firmware_version.raw < x.raw);
}
EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
static void ps3_power_save(void)
{
/*
* lv1_pause() puts the PPE thread into inactive state until an
* irq on an unmasked plug exists. MSR[EE] has no effect.
* flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
*/
lv1_pause(0);
}
static void __noreturn ps3_restart(char *cmd)
{
DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
smp_send_stop();
ps3_sys_manager_restart(); /* never returns */
}
static void ps3_power_off(void)
{
DBG("%s:%d\n", __func__, __LINE__);
smp_send_stop();
ps3_sys_manager_power_off(); /* never returns */
}
static void __noreturn ps3_halt(void)
{
DBG("%s:%d\n", __func__, __LINE__);
smp_send_stop();
ps3_sys_manager_halt(); /* never returns */
}
static void ps3_panic(char *str)
{
DBG("%s:%d %s\n", __func__, __LINE__, str);
smp_send_stop();
printk("\n");
printk(" System does not reboot automatically.\n");
printk(" Please press POWER button.\n");
printk("\n");
panic_flush_kmsg_end();
while(1)
lv1_pause(1);
}
#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
static void __init prealloc(struct ps3_prealloc *p)
{
if (!p->size)
return;
p->address = memblock_alloc(p->size, p->align);
if (!p->address)
panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
__func__, p->size, p->align);
printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
p->address);
}
#endif
#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
struct ps3_prealloc ps3fb_videomemory = {
.name = "ps3fb videomemory",
.size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
.align = 1024*1024 /* the GPU requires 1 MiB alignment */
};
EXPORT_SYMBOL_GPL(ps3fb_videomemory);
#define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory)
static int __init early_parse_ps3fb(char *p)
{
if (!p)
return 1;
ps3fb_videomemory.size = ALIGN(memparse(p, &p),
ps3fb_videomemory.align);
return 0;
}
early_param("ps3fb", early_parse_ps3fb);
#else
#define prealloc_ps3fb_videomemory() do { } while (0)
#endif
#if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
struct ps3_prealloc ps3flash_bounce_buffer = {
.name = "ps3flash bounce buffer",
.size = 256*1024,
.align = 256*1024
};
EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
#define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer)
static int __init early_parse_ps3flash(char *p)
{
if (!p)
return 1;
if (!strcmp(p, "off"))
ps3flash_bounce_buffer.size = 0;
return 0;
}
early_param("ps3flash", early_parse_ps3flash);
#else
#define prealloc_ps3flash_bounce_buffer() do { } while (0)
#endif
static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx)
{
/* Have to set at least one bit in the DABRX */
if (dabrx == 0 && dabr == 0)
dabrx = DABRX_USER;
/* hypervisor only allows us to set BTI, Kernel and user */
dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER;
return lv1_set_dabr(dabr, dabrx) ? -1 : 0;
}
static ssize_t ps3_fw_version_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sprintf(buf, "%s", ps3_firmware_version_str);
}
static int __init ps3_setup_sysfs(void)
{
static struct kobj_attribute attr = __ATTR(fw-version, S_IRUGO,
ps3_fw_version_show, NULL);
static struct kobject *kobj;
int result;
kobj = kobject_create_and_add("ps3", firmware_kobj);
if (!kobj) {
pr_warn("%s:%d: kobject_create_and_add failed.\n", __func__,
__LINE__);
return -ENOMEM;
}
result = sysfs_create_file(kobj, &attr.attr);
if (result) {
pr_warn("%s:%d: sysfs_create_file failed.\n", __func__,
__LINE__);
kobject_put(kobj);
return -ENOMEM;
}
return 0;
}
core_initcall(ps3_setup_sysfs);
static void __init ps3_setup_arch(void)
{
u64 tmp;
DBG(" -> %s:%d\n", __func__, __LINE__);
lv1_get_version_info(&ps3_firmware_version.raw, &tmp);
snprintf(ps3_firmware_version_str, sizeof(ps3_firmware_version_str),
"%u.%u.%u", ps3_firmware_version.major,
ps3_firmware_version.minor, ps3_firmware_version.rev);
printk(KERN_INFO "PS3 firmware version %s\n", ps3_firmware_version_str);
ps3_spu_set_platform();
#ifdef CONFIG_SMP
smp_init_ps3();
#endif
prealloc_ps3fb_videomemory();
prealloc_ps3flash_bounce_buffer();
ppc_md.power_save = ps3_power_save;
ps3_os_area_init();
DBG(" <- %s:%d\n", __func__, __LINE__);
}
static void __init ps3_progress(char *s, unsigned short hex)
{
printk("*** %04x : %s\n", hex, s ? s : "");
}
void __init ps3_early_mm_init(void)
{
unsigned long htab_size;
ps3_mm_init();
ps3_mm_vas_create(&htab_size);
ps3_hpte_init(htab_size);
}
static int __init ps3_probe(void)
{
DBG(" -> %s:%d\n", __func__, __LINE__);
ps3_os_area_save_params();
pm_power_off = ps3_power_off;
DBG(" <- %s:%d\n", __func__, __LINE__);
return 1;
}
#if defined(CONFIG_KEXEC_CORE)
static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
{
int cpu = smp_processor_id();
DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
ps3_smp_cleanup_cpu(cpu);
ps3_shutdown_IRQ(cpu);
DBG(" <- %s:%d\n", __func__, __LINE__);
}
#endif
define_machine(ps3) {
.name = "PS3",
.compatible = "sony,ps3",
.probe = ps3_probe,
.setup_arch = ps3_setup_arch,
.init_IRQ = ps3_init_IRQ,
.panic = ps3_panic,
.get_boot_time = ps3_get_boot_time,
.set_dabr = ps3_set_dabr,
.calibrate_decr = ps3_calibrate_decr,
.progress = ps3_progress,
.restart = ps3_restart,
.halt = ps3_halt,
#if defined(CONFIG_KEXEC_CORE)
.kexec_cpu_down = ps3_kexec_cpu_down,
#endif
};
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