Differential D24950 Diff 72475 head/sys/arm64/arm64/machdep_boot.c

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head/sys/arm64/arm64/machdep_boot.c

Show First 20 Lines • Show All 78 Lines • ▼ Show 20 Lines	#define PRELOAD_PUSH_STRING(str) do { \
size = roundup(size, sizeof(u_long)); \		size = roundup(size, sizeof(u_long)); \
} while (0)		} while (0)


/* Build minimal set of metatda. */		/* Build minimal set of metatda. */
static vm_offset_t		static vm_offset_t
fake_preload_metadata(void *dtb_ptr, size_t dtb_size)		fake_preload_metadata(void *dtb_ptr, size_t dtb_size)
{		{
#ifdef DDB
vm_offset_t zstart = 0, zend = 0;
#endif
vm_offset_t lastaddr;		vm_offset_t lastaddr;
static char fake_preload[256];		static char fake_preload[256];
caddr_t preload_ptr;		caddr_t preload_ptr;
size_t size;		size_t size;

		lastaddr = (vm_offset_t)&end;
preload_ptr = (caddr_t)&fake_preload[0];		preload_ptr = (caddr_t)&fake_preload[0];
size = 0;		size = 0;

PRELOAD_PUSH_VALUE(uint32_t, MODINFO_NAME);		PRELOAD_PUSH_VALUE(uint32_t, MODINFO_NAME);
PRELOAD_PUSH_STRING("kernel");		PRELOAD_PUSH_STRING("kernel");

PRELOAD_PUSH_VALUE(uint32_t, MODINFO_TYPE);		PRELOAD_PUSH_VALUE(uint32_t, MODINFO_TYPE);
PRELOAD_PUSH_STRING("elf kernel");		PRELOAD_PUSH_STRING("elf kernel");

PRELOAD_PUSH_VALUE(uint32_t, MODINFO_ADDR);		PRELOAD_PUSH_VALUE(uint32_t, MODINFO_ADDR);
PRELOAD_PUSH_VALUE(uint32_t, sizeof(vm_offset_t));		PRELOAD_PUSH_VALUE(uint32_t, sizeof(vm_offset_t));
PRELOAD_PUSH_VALUE(uint64_t, VM_MIN_KERNEL_ADDRESS);		PRELOAD_PUSH_VALUE(uint64_t, VM_MIN_KERNEL_ADDRESS);

PRELOAD_PUSH_VALUE(uint32_t, MODINFO_SIZE);		PRELOAD_PUSH_VALUE(uint32_t, MODINFO_SIZE);
PRELOAD_PUSH_VALUE(uint32_t, sizeof(size_t));		PRELOAD_PUSH_VALUE(uint32_t, sizeof(size_t));
PRELOAD_PUSH_VALUE(uint64_t, (size_t)(&end - VM_MIN_KERNEL_ADDRESS));		PRELOAD_PUSH_VALUE(uint64_t, (size_t)(&end - VM_MIN_KERNEL_ADDRESS));
#ifdef DDB
if ((uint64_t )VM_MIN_KERNEL_ADDRESS == MAGIC_TRAMP_NUMBER) {
PRELOAD_PUSH_VALUE(uint32_t, MODINFO_METADATA\|MODINFOMD_SSYM);
PRELOAD_PUSH_VALUE(uint32_t, sizeof(vm_offset_t));
PRELOAD_PUSH_VALUE(uint64_t,
(uint64_t )(VM_MIN_KERNEL_ADDRESS + 4));

PRELOAD_PUSH_VALUE(uint32_t, MODINFO_METADATA \| MODINFOMD_ESYM);
PRELOAD_PUSH_VALUE(uint32_t, sizeof(vm_offset_t));
PRELOAD_PUSH_VALUE(uint64_t,
(uint64_t )(VM_MIN_KERNEL_ADDRESS + 8));

lastaddr = (uint64_t )(VM_MIN_KERNEL_ADDRESS + 8);
zend = lastaddr;
zstart = (uint64_t )(VM_MIN_KERNEL_ADDRESS + 4);
db_fetch_ksymtab(zstart, zend);
} else
#endif
lastaddr = (vm_offset_t)&end;
if (dtb_ptr != NULL) {		if (dtb_ptr != NULL) {
/* Copy DTB to KVA space and insert it into module chain. */		/* Copy DTB to KVA space and insert it into module chain. */
lastaddr = roundup(lastaddr, sizeof(int));		lastaddr = roundup(lastaddr, sizeof(int));
PRELOAD_PUSH_VALUE(uint32_t, MODINFO_METADATA \| MODINFOMD_DTBP);		PRELOAD_PUSH_VALUE(uint32_t, MODINFO_METADATA \| MODINFOMD_DTBP);
PRELOAD_PUSH_VALUE(uint32_t, sizeof(uint64_t));		PRELOAD_PUSH_VALUE(uint32_t, sizeof(uint64_t));
PRELOAD_PUSH_VALUE(uint64_t, (uint64_t)lastaddr);		PRELOAD_PUSH_VALUE(uint64_t, (uint64_t)lastaddr);
memmove((void *)lastaddr, dtb_ptr, dtb_size);		memmove((void *)lastaddr, dtb_ptr, dtb_size);
lastaddr += dtb_size;		lastaddr += dtb_size;
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