Differential D24950 Diff 72475 head/sys/riscv/riscv/machdep.c

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head/sys/riscv/riscv/machdep.c

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	/*			/*
	* Fake up a boot descriptor table.			* Fake up a boot descriptor table.
	* RISCVTODO: This needs to be done via loader (when it's available).			* RISCVTODO: This needs to be done via loader (when it's available).
	*/			*/
	vm_offset_t			vm_offset_t
	fake_preload_metadata(struct riscv_bootparams *rvbp)			fake_preload_metadata(struct riscv_bootparams *rvbp)
	{			{
	static uint32_t fake_preload[35];			static uint32_t fake_preload[35];
	#ifdef DDB
	vm_offset_t zstart = 0, zend = 0;
	#endif
	vm_offset_t lastaddr;			vm_offset_t lastaddr;
	size_t fake_size, dtb_size;			size_t fake_size, dtb_size;

	#define PRELOAD_PUSH_VALUE(type, value) do { \			#define PRELOAD_PUSH_VALUE(type, value) do { \
	(type )((char *)fake_preload + fake_size) = (value); \			(type )((char *)fake_preload + fake_size) = (value); \
	fake_size += sizeof(type); \			fake_size += sizeof(type); \
	} while (0)			} while (0)

	#define PRELOAD_PUSH_STRING(str) do { \			#define PRELOAD_PUSH_STRING(str) do { \
	uint32_t ssize; \			uint32_t ssize; \
	ssize = strlen(str) + 1; \			ssize = strlen(str) + 1; \
	PRELOAD_PUSH_VALUE(uint32_t, ssize); \			PRELOAD_PUSH_VALUE(uint32_t, ssize); \
	strcpy(((char *)fake_preload + fake_size), str); \			strcpy(((char *)fake_preload + fake_size), str); \
	fake_size += ssize; \			fake_size += ssize; \
	fake_size = roundup(fake_size, sizeof(u_long)); \			fake_size = roundup(fake_size, sizeof(u_long)); \
	} while (0)			} while (0)

	fake_size = 0;			fake_size = 0;
				lastaddr = (vm_offset_t)&end;

	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, KERNBASE);			PRELOAD_PUSH_VALUE(uint64_t, KERNBASE);

	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)((vm_offset_t)&end - KERNBASE));			PRELOAD_PUSH_VALUE(uint64_t, (size_t)((vm_offset_t)&end - KERNBASE));
	#ifdef DDB
	#if 0
	/* RISCVTODO */
	if ((uint32_t )KERNVIRTADDR == MAGIC_TRAMP_NUMBER) {
	fake_preload[i++] = MODINFO_METADATA\|MODINFOMD_SSYM;
	fake_preload[i++] = sizeof(vm_offset_t);
	fake_preload[i++] = (uint32_t )(KERNVIRTADDR + 4);
	fake_preload[i++] = MODINFO_METADATA\|MODINFOMD_ESYM;
	fake_preload[i++] = sizeof(vm_offset_t);
	fake_preload[i++] = (uint32_t )(KERNVIRTADDR + 8);
	lastaddr = (uint32_t )(KERNVIRTADDR + 8);
	zend = lastaddr;
	zstart = (uint32_t )(KERNVIRTADDR + 4);
	db_fetch_ksymtab(zstart, zend);
	} else
	#endif
	#endif
	lastaddr = (vm_offset_t)&end;

	/* Copy the DTB to KVA space. */			/* Copy the DTB to KVA space. */
	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(vm_offset_t));			PRELOAD_PUSH_VALUE(uint32_t, sizeof(vm_offset_t));
	PRELOAD_PUSH_VALUE(vm_offset_t, lastaddr);			PRELOAD_PUSH_VALUE(vm_offset_t, lastaddr);
	dtb_size = fdt_totalsize(rvbp->dtbp_virt);			dtb_size = fdt_totalsize(rvbp->dtbp_virt);
	memmove((void )lastaddr, (const void )rvbp->dtbp_virt, dtb_size);			memmove((void )lastaddr, (const void )rvbp->dtbp_virt, dtb_size);
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