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x86: extend e820 ealy_res support 32bit - fix

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use find_e820_area to find addess for new RAMDISK, instead of using ram blindly

also print out low ram and bootmap info

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Yinghai Lu 2008-05-21 18:40:18 -07:00 committed by Thomas Gleixner
parent a4c81cf684
commit ba5b14cc03
1 changed files with 31 additions and 24 deletions
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55
arch/x86/kernel/setup_32.c
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@ -466,11 +466,11 @@ static bool do_relocate_initrd = false;
static void __init reserve_initrd(void)
{
unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
unsigned long ramdisk_size = boot_params.hdr.ramdisk_size;
unsigned long ramdisk_end = ramdisk_image + ramdisk_size;
unsigned long end_of_lowmem = max_low_pfn << PAGE_SHIFT;
unsigned long ramdisk_here;
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)
@ -478,14 +478,8 @@ static void __init reserve_initrd(void)
initrd_start = 0;
if (ramdisk_end < ramdisk_image) {
free_bootmem(ramdisk_image, ramdisk_size);
printk(KERN_ERR "initrd wraps around end of memory, "
"disabling initrd\n");
return;
}
if (ramdisk_size >= end_of_lowmem/2) {
free_bootmem(ramdisk_image, ramdisk_size);
free_early(ramdisk_image, ramdisk_image + ramdisk_size - 1);
printk(KERN_ERR "initrd too large to handle, "
"disabling initrd\n");
return;
@ -495,8 +489,7 @@ static void __init reserve_initrd(void)
/* All in lowmem, easy case */
/*
* don't need to reserve again, already reserved early
* in i386_start_kernel, and early_res_to_bootmem
* convert that to reserved in bootmem
* in i386_start_kernel
*/
initrd_start = ramdisk_image + PAGE_OFFSET;
initrd_end = initrd_start+ramdisk_size;
@ -504,11 +497,14 @@ static void __init reserve_initrd(void)
}
/* We need to move the initrd down into lowmem */
ramdisk_here = (end_of_lowmem - ramdisk_size) & PAGE_MASK;
ramdisk_here = find_e820_area(min_low_pfn<<PAGE_SHIFT,
end_of_lowmem, ramdisk_size,
PAGE_SIZE);
/* Note: this includes all the lowmem currently occupied by
the initrd, we rely on that fact to keep the data intact. */
reserve_bootmem(ramdisk_here, ramdisk_size, BOOTMEM_DEFAULT);
reserve_early(ramdisk_here, ramdisk_here + ramdisk_size - 1,
"NEW RAMDISK");
initrd_start = ramdisk_here + PAGE_OFFSET;
initrd_end = initrd_start + ramdisk_size;
@ -519,10 +515,10 @@ static void __init reserve_initrd(void)
static void __init relocate_initrd(void)
{
unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
unsigned long ramdisk_size = boot_params.hdr.ramdisk_size;
unsigned long end_of_lowmem = max_low_pfn << PAGE_SHIFT;
unsigned long ramdisk_here;
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;
@ -540,6 +536,8 @@ static void __init relocate_initrd(void)
memcpy(q, p, clen);
q += clen;
/* need to free these low pages...*/
printk(KERN_INFO "Freeing old partial RAMDISK %08llx-%08llx\n",
ramdisk_image, ramdisk_image + clen - 1);
free_bootmem(ramdisk_image, clen);
ramdisk_image += clen;
ramdisk_size -= clen;
@ -560,6 +558,11 @@ static void __init relocate_initrd(void)
ramdisk_size -= clen;
}
/* 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",
ramdisk_image, ramdisk_image + ramdisk_size - 1,
ramdisk_here, ramdisk_here + ramdisk_size - 1);
}
#endif /* CONFIG_BLK_DEV_INITRD */
@ -576,10 +579,17 @@ void __init setup_bootmem_allocator(void)
PAGE_SIZE);
if (bootmap == -1L)
panic("Cannot find bootmem map of size %ld\n", bootmap_size);
reserve_early(bootmap, bootmap + bootmap_size - 1, "BOOTMAP");
#ifdef CONFIG_BLK_DEV_INITRD
reserve_initrd();
#endif
bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, max_low_pfn);
printk(KERN_INFO " low ram: %08lx - %08lx\n",
min_low_pfn<<PAGE_SHIFT, max_low_pfn<<PAGE_SHIFT);
printk(KERN_INFO " bootmap [%08lx - %08lx]\n",
bootmap, bootmap + bootmap_size - 1);
register_bootmem_low_pages(max_low_pfn);
early_res_to_bootmem(0, max_low_pfn<<PAGE_SHIFT);
reserve_bootmem(bootmap, bootmap_size, BOOTMEM_DEFAULT);
#ifdef CONFIG_ACPI_SLEEP
/*
@ -592,9 +602,6 @@ void __init setup_bootmem_allocator(void)
* Find and reserve possible boot-time SMP configuration:
*/
find_smp_config();
#endif
#ifdef CONFIG_BLK_DEV_INITRD
reserve_initrd();
#endif
numa_kva_reserve();
reserve_crashkernel();