Commit fbdb3e5b authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Linus Torvalds

[PATCH] ps3: Preallocate bootmem memory for ps3fb

Preallocate bootmem memory for the PS3 frame buffer device, which needs a
large block of physically-contiguous memory. The size of this memory block is
  - The config option CONFIG_FB_PS3_DEFAULT_SIZE_M allows to specify the
    default amount of memory (in MiB) allocated to the virtual frame buffer.
  - The early boot parameter `ps3fb=xxx' allows to override the default value.
    It will be rounded up to a multiple of 1 MiB, if needed.
Signed-off-by: default avatarGeert Uytterhoeven <>
Signed-off-by: default avatarGeoff Levand <>
Cc: James Simmons <>
Cc: Benjamin Herrenschmidt <>
Cc: Paul Mackerras <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent dcfe2666
......@@ -24,6 +24,7 @@
#include <linux/root_dev.h>
#include <linux/console.h>
#include <linux/kexec.h>
#include <linux/bootmem.h>
#include <asm/machdep.h>
#include <asm/firmware.h>
......@@ -80,6 +81,46 @@ static void ps3_panic(char *str)
for (;;) ;
static void prealloc(struct ps3_prealloc *p)
if (!p->size)
p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
if (!p->address) {
printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__,
printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
#ifdef CONFIG_FB_PS3
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 */
#define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory)
static int __init early_parse_ps3fb(char *p)
if (!p)
return 1;
ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
return 0;
early_param("ps3fb", early_parse_ps3fb);
#define prealloc_ps3fb_videomemory() do { } while (0)
static void __init ps3_setup_arch(void)
union ps3_firmware_version v;
......@@ -101,6 +142,7 @@ static void __init ps3_setup_arch(void)
conswitchp = &dummy_con;
ppc_md.power_save = ps3_power_save;
DBG(" <- %s:%d\n", __func__, __LINE__);
......@@ -388,4 +388,13 @@ struct ps3_vuart_port_device {
int ps3_vuart_port_device_register(struct ps3_vuart_port_device *dev);
struct ps3_prealloc {
const char *name;
void *address;
unsigned long size;
unsigned long align;
extern struct ps3_prealloc ps3fb_videomemory;
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