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2008-08-17 Robert Millan <rmh@aybabtu.com>

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* conf/i386-pc.rmk (kernel_img_SOURCES): Add `kern/i386/pc/mmap.c'.

        * include/grub/i386/pc/init.h (GRUB_MACHINE_MEMORY_AVAILABLE)
        (GRUB_MACHINE_MEMORY_RESERVED): New macros.
        (grub_machine_mmap_iterate): New function declaration.
        * include/grub/multiboot.h (struct grub_multiboot_mmap_entry): New
        structure.
        (GRUB_MMAP_MEMORY_AVAILABLE, GRUB_MMAP_MEMORY_RESERVED): New
        macros.

        * kern/i386/pc/init.c (grub_machine_init): Replace hardcoded region
        type check value with `GRUB_MACHINE_MEMORY_AVAILABLE'.
        Move e820 parsing from here ...
        * kern/i386/pc/mmap.c: New file.
        (grub_machine_mmap_iterate): ... to here.

        * include/grub/i386/coreboot/memory.h: Remove `<grub/err.h>'.
        (GRUB_LINUXBIOS_MEMORY_AVAILABLE): Rename (for consistency) to ...
        (GRUB_MACHINE_MEMORY_AVAILABLE): ... this.  Update all users.
        (grub_available_iterate): Redeclare to return `void', and redeclare
        its hook to use grub_uint64_t as addr and size parameters, and rename
        to ...
        (grub_machine_mmap_iterate): ... this.  Update all users.

        * kern/i386/coreboot/mmap.c (grub_mmap_iterate): Simplify parser loop
        to make it more readable.  Rename to ...
        (grub_machine_mmap_iterate): ... this.

        * loader/i386/pc/multiboot.c (mmap_addr, mmap_length): New variables.
        (grub_get_multiboot_mmap_len, grub_fill_multiboot_mmap): New functions.
        (grub_multiboot): Allocate an extra region after the payload, and fill
        it with a Multiboot memory map.  Adjust a.out loader to calculate size
        with the extra space.
        (grub_multiboot_load_elf32): Adjust elf32 loader to calculate size
        with the extra space.
This commit is contained in:
robertmh 2008-08-17 16:32:18 +00:00
parent 9807deb97d
commit deceb3ecd3
10 changed files with 289 additions and 70 deletions
Download patch file Download diff file Expand all files Collapse all files

71
kern/i386/pc/init.c
View file

@ -132,9 +132,6 @@ compact_mem_regions (void)
void
grub_machine_init (void)
{
grub_uint32_t cont;
struct grub_machine_mmap_entry *entry
= (struct grub_machine_mmap_entry *) GRUB_MEMORY_MACHINE_SCRATCH_ADDR;
int i;
/* Initialize the console as early as possible. */
@ -156,55 +153,35 @@ grub_machine_init (void)
add_mem_region (GRUB_MEMORY_MACHINE_RESERVED_END,
grub_lower_mem - GRUB_MEMORY_MACHINE_RESERVED_END);
/* Check if grub_get_mmap_entry works. */
cont = grub_get_mmap_entry (entry, 0);
if (entry->size)
do
{
/* Avoid the lower memory. */
if (entry->addr < 0x100000)
{
if (entry->len <= 0x100000 - entry->addr)
goto next;
entry->len -= 0x100000 - entry->addr;
entry->addr = 0x100000;
}
/* Ignore >4GB. */
if (entry->addr <= 0xFFFFFFFF && entry->type == 1)
{
grub_addr_t addr;
grub_size_t len;
addr = (grub_addr_t) entry->addr;
len = ((addr + entry->len > 0xFFFFFFFF)
? 0xFFFFFFFF - addr
: (grub_size_t) entry->len);
add_mem_region (addr, len);
}
next:
if (! cont)
break;
cont = grub_get_mmap_entry (entry, cont);
}
while (entry->size);
else
auto int NESTED_FUNC_ATTR hook (grub_uint64_t, grub_uint64_t, grub_uint32_t);
int NESTED_FUNC_ATTR hook (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)
{
grub_uint32_t eisa_mmap = grub_get_eisa_mmap ();
if (eisa_mmap)
/* Avoid the lower memory. */
if (addr < 0x100000)
{
add_mem_region (0x100000, (eisa_mmap & 0xFFFF) << 10);
add_mem_region (0x1000000, eisa_mmap & ~0xFFFF);
if (size <= 0x100000 - addr)
return 0;
size -= 0x100000 - addr;
addr = 0x100000;
}
else
add_mem_region (0x100000, grub_get_memsize (1) << 10);
/* Ignore >4GB. */
if (addr <= 0xFFFFFFFF && type == GRUB_MACHINE_MEMORY_AVAILABLE)
{
grub_size_t len;
len = (grub_size_t) ((addr + size > 0xFFFFFFFF)
? 0xFFFFFFFF - addr
: size);
add_mem_region (addr, len);
}
return 0;
}
grub_machine_mmap_iterate (hook);
compact_mem_regions ();
/* Add the memory regions to free memory, except for the region starting