efi: Add system table pointer argument to shared functions.

Add system table pointer argument to shared EFI stub related functions
so they no longer use a global system table pointer as they did when part
of eboot.c.  For the ARM EFI stub this allows us to avoid global
variables completely and thereby not have to deal with GOT fixups.
Not having the EFI stub fixup its GOT, which is shared with the
decompressor, simplifies the relocating of the zImage to a
bootable address.

Signed-off-by: Roy Franz <roy.franz@linaro.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>

arch/x86/boot/compressed/eboot.c

@@ -453,13 +453,13 @@ struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
 	status = efi_call_phys3(sys_table->boottime->handle_protocol,
 				handle, &proto, (void *)&image);
 	if (status != EFI_SUCCESS) {
-		efi_printk("Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
+		efi_printk(sys_table, "Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
 		return NULL;
 	}
 
-	status = low_alloc(0x4000, 1, (unsigned long *)&boot_params);
+	status = low_alloc(sys_table, 0x4000, 1, (unsigned long *)&boot_params);
 	if (status != EFI_SUCCESS) {
-		efi_printk("Failed to alloc lowmem for boot params\n");
+		efi_printk(sys_table, "Failed to alloc lowmem for boot params\n");
 		return NULL;
 	}
 
@@ -503,9 +503,10 @@ struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
 
 			options_size++;	/* NUL termination */
 
-			status = low_alloc(options_size, 1, &cmdline);
+			status = low_alloc(sys_table, options_size, 1,
+					   &cmdline);
 			if (status != EFI_SUCCESS) {
-				efi_printk("Failed to alloc mem for cmdline\n");
+				efi_printk(sys_table, "Failed to alloc mem for cmdline\n");
 				goto fail;
 			}
 
@@ -529,16 +530,16 @@ struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
 
 	memset(sdt, 0, sizeof(*sdt));
 
-	status = handle_ramdisks(image, hdr);
+	status = handle_ramdisks(sys_table, image, hdr);
 	if (status != EFI_SUCCESS)
 		goto fail2;
 
 	return boot_params;
 fail2:
 	if (options_size)
-		low_free(options_size, hdr->cmd_line_ptr);
+		low_free(sys_table, options_size, hdr->cmd_line_ptr);
 fail:
-	low_free(0x4000, (unsigned long)boot_params);
+	low_free(sys_table, 0x4000, (unsigned long)boot_params);
 	return NULL;
 }
 
@@ -561,15 +562,15 @@ static efi_status_t exit_boot(struct boot_params *boot_params,
 again:
 	size += sizeof(*mem_map) * 2;
 	_size = size;
-	status = low_alloc(size, 1, (unsigned long *)&mem_map);
+	status = low_alloc(sys_table, size, 1, (unsigned long *)&mem_map);
 	if (status != EFI_SUCCESS)
 		return status;
 
 get_map:
 	status = efi_call_phys5(sys_table->boottime->get_memory_map, &size,
 				mem_map, &key, &desc_size, &desc_version);
 	if (status == EFI_BUFFER_TOO_SMALL) {
-		low_free(_size, (unsigned long)mem_map);
+		low_free(sys_table, _size, (unsigned long)mem_map);
 		goto again;
 	}
 
@@ -671,7 +672,7 @@ static efi_status_t exit_boot(struct boot_params *boot_params,
 	return EFI_SUCCESS;
 
 free_mem_map:
-	low_free(_size, (unsigned long)mem_map);
+	low_free(sys_table, _size, (unsigned long)mem_map);
 	return status;
 }
 
@@ -694,10 +695,10 @@ static efi_status_t relocate_kernel(struct setup_header *hdr)
 				EFI_ALLOCATE_ADDRESS, EFI_LOADER_DATA,
 				nr_pages, &start);
 	if (status != EFI_SUCCESS) {
-		status = low_alloc(hdr->init_size, hdr->kernel_alignment,
-				   &start);
+		status = low_alloc(sys_table, hdr->init_size,
+				   hdr->kernel_alignment, &start);
 		if (status != EFI_SUCCESS)
-			efi_printk("Failed to alloc mem for kernel\n");
+			efi_printk(sys_table, "Failed to alloc mem for kernel\n");
 	}
 
 	if (status == EFI_SUCCESS)
@@ -737,22 +738,23 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table,
 				EFI_LOADER_DATA, sizeof(*gdt),
 				(void **)&gdt);
 	if (status != EFI_SUCCESS) {
-		efi_printk("Failed to alloc mem for gdt structure\n");
+		efi_printk(sys_table, "Failed to alloc mem for gdt structure\n");
 		goto fail;
 	}
 
 	gdt->size = 0x800;
-	status = low_alloc(gdt->size, 8, (unsigned long *)&gdt->address);
+	status = low_alloc(sys_table, gdt->size, 8,
+			   (unsigned long *)&gdt->address);
 	if (status != EFI_SUCCESS) {
-		efi_printk("Failed to alloc mem for gdt\n");
+		efi_printk(sys_table, "Failed to alloc mem for gdt\n");
 		goto fail;
 	}
 
 	status = efi_call_phys3(sys_table->boottime->allocate_pool,
 				EFI_LOADER_DATA, sizeof(*idt),
 				(void **)&idt);
 	if (status != EFI_SUCCESS) {
-		efi_printk("Failed to alloc mem for idt structure\n");
+		efi_printk(sys_table, "Failed to alloc mem for idt structure\n");
 		goto fail;
 	}