Commit eb1379cb authored by Yinghai Lu's avatar Yinghai Lu Committed by Ingo Molnar

x86: update reserve_initrd to support 64bit

Signed-off-by: default avatarYinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 08afc7c0
No related merge requests found
......@@ -186,43 +186,18 @@ static inline void copy_edd(void)
#ifdef CONFIG_BLK_DEV_INITRD
static void __init relocate_initrd(void);
#ifdef CONFIG_X86_32
static void __init reserve_initrd(void)
#define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT)
static void __init relocate_initrd(void)
{
u64 ramdisk_image = boot_params.hdr.ramdisk_image;
u64 ramdisk_size = boot_params.hdr.ramdisk_size;
u64 ramdisk_end = ramdisk_image + ramdisk_size;
u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT;
u64 ramdisk_here;
if (!boot_params.hdr.type_of_loader ||
!ramdisk_image || !ramdisk_size)
return; /* No initrd provided by bootloader */
initrd_start = 0;
if (ramdisk_size >= (end_of_lowmem>>1)) {
free_early(ramdisk_image, ramdisk_end);
printk(KERN_ERR "initrd too large to handle, "
"disabling initrd\n");
return;
}
printk(KERN_INFO "old RAMDISK: %08llx - %08llx\n", ramdisk_image,
ramdisk_end);
if (ramdisk_end <= end_of_lowmem) {
/* All in lowmem, easy case */
/*
* don't need to reserve again, already reserved early
* in i386_start_kernel
*/
initrd_start = ramdisk_image + PAGE_OFFSET;
initrd_end = initrd_start + ramdisk_size;
return;
}
unsigned long slop, clen, mapaddr;
char *p, *q;
/* We need to move the initrd down into lowmem */
ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size,
......@@ -241,22 +216,6 @@ static void __init reserve_initrd(void)
printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n",
ramdisk_here, ramdisk_here + ramdisk_size);
relocate_initrd();
}
#define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT)
static void __init relocate_initrd(void)
{
u64 ramdisk_image = boot_params.hdr.ramdisk_image;
u64 ramdisk_size = boot_params.hdr.ramdisk_size;
u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT;
u64 ramdisk_here;
unsigned long slop, clen, mapaddr;
char *p, *q;
ramdisk_here = initrd_start - PAGE_OFFSET;
q = (char *)initrd_start;
/* Copy any lowmem portion of the initrd */
......@@ -286,18 +245,60 @@ static void __init relocate_initrd(void)
/* high pages is not converted by early_res_to_bootmem */
ramdisk_image = boot_params.hdr.ramdisk_image;
ramdisk_size = boot_params.hdr.ramdisk_size;
printk(KERN_INFO "Copied RAMDISK from %016llx - %016llx to %08llx - %08llx\n",
printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to"
" %08llx - %08llx\n",
ramdisk_image, ramdisk_image + ramdisk_size - 1,
ramdisk_here, ramdisk_here + ramdisk_size - 1);
}
#endif
/*
* need to free old one, otherwise init cross max_low_pfn could be
* converted to bootmem
*/
free_early(ramdisk_image, ramdisk_image+ramdisk_size);
static void __init reserve_initrd(void)
{
u64 ramdisk_image = boot_params.hdr.ramdisk_image;
u64 ramdisk_size = boot_params.hdr.ramdisk_size;
u64 ramdisk_end = ramdisk_image + ramdisk_size;
u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT;
if (!boot_params.hdr.type_of_loader ||
!ramdisk_image || !ramdisk_size)
return; /* No initrd provided by bootloader */
initrd_start = 0;
if (ramdisk_size >= (end_of_lowmem>>1)) {
free_early(ramdisk_image, ramdisk_end);
printk(KERN_ERR "initrd too large to handle, "
"disabling initrd\n");
return;
}
printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image,
ramdisk_end);
if (ramdisk_end <= end_of_lowmem) {
/* All in lowmem, easy case */
/*
* don't need to reserve again, already reserved early
* in i386_start_kernel
*/
initrd_start = ramdisk_image + PAGE_OFFSET;
initrd_end = initrd_start + ramdisk_size;
return;
}
#ifdef CONFIG_X86_32
relocate_initrd();
#else
printk(KERN_ERR "initrd extends beyond end of memory "
"(0x%08llx > 0x%08llx)\ndisabling initrd\n",
ramdisk_end, end_of_lowmem);
initrd_start = 0;
#endif
free_early(ramdisk_image, ramdisk_end);
}
#else
void __init reserve_initrd(void)
static void __init reserve_initrd(void)
{
}
#endif /* CONFIG_BLK_DEV_INITRD */
......
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